It’s coming on Christmas, they’re cutting down trees… but it also stays pretty green. A famous line from Joni Mitchell’s River. If you live in cold and tree hearty Canada, cutting down a tree off your lot makes sense at Christmas time. I have thousands of young pines on my land and I cut them back every summer. They grow like weeds. But if you live in the middle of London, New York or LA, the greener option is obviously renting a potted Christmas tree. Since we covered the story a few years ago a large number of Christmas tree rental companies have opened.

Related: Rent a live potted Christmas tree in Ireland

In California there the Living Christmas Company in Southern California. They deliver. ]Rent A Living Christmas Tree in the South Bay and Monterey Bay areas. Environment-friendly rental system with drop-off and pickup. Plant Manning Tree Concern rents out live, potted Christmas trees such as redwoods and spruces. Delivery and post-holiday retrieval available in parts of California.  Fitzgeralds Floral Events provides decorated artificial Christmas tree rentals with full setup and removal services in Los Angeles and Orange County.

Related: cut Christmas trees give off nasty chemicals and allergens

You can go to a site or go online, order the tree and pick it up or if if possible have it delivered. A live tree doesn’t shed needles after a few weeks and it’s obviously the ecological choice to cutting down millions of 7 to 15 year old trees every year.

According to the National Christmas Tree Association there are about 30 million trees cut down every year. How about treading lighter on this planet by renting one? We have 8 reasons why it’s better to rent. Consider that some trees in New York are going for a few hundred dollars. Renting seems like an economical choice as well.

1. Environmentally friendly: Renting a living, potted tree keeps it alive after the holidays instead of cutting it down.

2. Reduces waste: No discarded trees piling up on sidewalks or landfills; the tree continues growing year after year.

3. Lower carbon footprint: Living trees actively absorb CO₂, and many rental companies operate locally, reducing transport emissions.

4. Supports reforestation: Most services plant the trees in parks or forests once they outgrow rental size.

5. No storage needed: Unlike artificial trees which offgas you don’t need space to store anything after the holidays.

6. Fresher and safer: A living tree doesn’t dry out, reducing fire risk and shedding fewer needles.

7. Helps local growers and nonprofits: Rentals often support small nurseries, conservation groups, or urban forest programs.

8. Easy delivery and pickup: Most services bring the tree to your door and take it away afterward — low hassle.

Ho, Ho, Ho

The post Rent a living Christmas tree in California appeared first on Green Prophet.

Grocery prices and mortgages in cities are going through the roof. You’ve decided to go rural and you are looking at the options. What about an inflatable concrete home like the one built by Robert Downey Junior? If you’ve chosen this path, over superadobe, you wonder, how can you make the numbers work and make it sustainable? Read our article on inflatable concrete homes and how much they cost.

Let’s start: Imagine buying a modest rural plot, somewhere near Sudbury, Ontario, or in the Sierra foothills of California—and building a 1,000-sq-ft (93 m²) home using an inflatable-shell method like that created by Binishell. A flat, fabric form is inflated on-site and filled with a low-carbon concrete mix that hardens into a seamless, dome-like shell.

Inside, the walls are finished and insulated with hempcrete, a breathable, carbon-negative material that stores carbon as it cures. The entire build aims to reduce dependence on expensive mortgages, rising energy bills, and urban living costs while embodying resilience and ecological balance.

Because there’s no heavy scaffolding or formwork, construction is quick and more or less clean. Inflation and concrete pumping take a day; curing takes a week or so. The costs?

Ontario: Shell cost ≈ US $25–40 / sq ft.

California: Shell cost ≈ US $45–60 / sq ft.

After adding foundations (will you have a finished basement?), utilities, and finishes, total cost lands between US $120–16/sq ft—far below conventional rural builds, which often exceed US $250/sq ft. The finished home is highly energy-efficient: thick hempcrete walls and thermal-mass concrete stabilize interior temperature, lowering heating and cooling bills by up to 50%. Over 15 years, savings on mortgage and energy can reach tens of thousands of dollars. For people who want to start a regenerative farm or an online business in the country, this is a no-brainer.

Concrete’s carbon footprint is its biggest flaw, but newer mixes cut emissions dramatically. Take calcined-clay blends (LC³), fly-ash or slag substitutes, and carbon-mineralization technologies like CarbonCure which can reduce CO₂ output by 40 %. In California, renewable-energy credits further offset embodied carbon; in Ontario, pairing solar panels or micro-hydro with low-carbon materials can make the structure nearly net-zero.

Look out for hidden costs and restrictions. Some people prefer to buy land in unorganized townships to avoid too much government oversight. That doesn’t mean you can do what you want. Permits are still needed. In Ontario, you need a building permit for any new structure over 10 square meters (108 sq ft), or for any structure, including sheds, over 15 square meters (sq ft), depending on the municipality.

Hempcrete adds another layer of sustainability, absorbing CO₂ during curing and improving indoor air quality. Together, these materials turn a traditionally high-carbon building type into a model of circular design. Hempcrete is also fire resistant, and added bonus for people in forest fire prone areas in California.

The biggest barrier today in new sustainable building isn’t technology—it’s building codes. Inflatable concrete shells fall outside most standard residential classifications. In both provinces and states, permits require engineering certification, structural testing, and often a variance from conventional framing standards. Builders must collaborate with local inspectors early, providing proof of structural integrity, insulation values, and fire ratings. If you are into dealing with those hassles you can create a model home for your neighbors to follow.

Inflatable-shell homes offer a credible path to affordable, durable, and lower-carbon living. For those willing to navigate permitting and pioneer new methods, this approach could define the next generation of rural housing—fast to build, low in cost, and light on the planet. It always takes the first movers to start new dreams.

Inflatable Concrete Domes in Canada

The Monolithic Dome Institute (MDI) has helped bring air-formed concrete construction to Canada, proving that dome-shaped, energy-efficient homes can thrive even in cold northern climates. Its method, known as the Monolithic Dome system, relies on an inflatable air-form, steel-reinforced concrete, and foam insulation to create one continuous, highly durable shell.

In Yorkton, Saskatchewan (shown below), Canadian Dome Industries built a 40-foot (12.2 m) hemispherical home that demonstrates the system’s practicality and strength.

Another dome, located in central Alberta, measures 55 feet in diameter and was built off-grid in 2005. This structure uses passive-solar orientation, thick insulation, and thermal-mass concrete to remain comfortable year-round, reducing energy demand in both heating and cooling seasons.

Construction begins with a flexible Airform membrane anchored to a circular foundation. The membrane is inflated to the desired dome shape, and workers spray its interior with polyurethane foam to form a stable surface. Steel reinforcement is attached to the foam, and layers of shotcrete (sprayed concrete) are applied, hardening into a self-supporting structure. The finished shell functions as roof, walls, and insulation all in one piece—eliminating many of the weak points found in conventional buildings.

According to the Monolithic Dome Institute, these domes use up to 50% less energy than standard homes. Their rounded shape sheds wind and snow efficiently, making them highly resistant to storms, mold, fire, and pests—key advantages in Canada’s variable climate. We just need a new shape of bed to fit a square in a rounded room.

While MDI’s technique differs from newer “inflatable concrete bladder” methods—where the form itself is filled with concrete rather than sprayed over—the principle remains the same: air replaces formwork.

These Canadian dome homes demonstrate that air-formed, reinforced concrete shells are a proven, climate-resilient housing solution and a foundation for more sustainable, low-carbon building methods in the future. With builds for industry, the Monolithic Domes aren’t as pretty as Binishells.

The post Inflatable concrete homes: a California and Ontario case study appeared first on Green Prophet.

Not a trend, and not just a community: why Lagoon Valley’s green build may be the blueprint for sustainable living

As the winds of change blow through housing markets and climate conversations alike, more people are asking how—and where—to live in ways that reflect their deepest values. For those seeking community, conservation, and connection, a quiet revolution is taking shape in Northern California. #Vanlife had its day, and global nomadism is lonely. Lagoon Valley might be the natural next step for people looking to live sustainably in a regular-sized green home and community.  

We first reported on Lagoon Valley in 2022 when the idea of a sustainable, conservation community on the edge of Vacaville sounded more like a dream than a blueprint. Readers loved the idea of a local community farm within walking distance, and neighbors sharing similar conservation values, like farm-to-table and community supported agriculture without having to join a cult or commune. Now, after years of planning, the vision has become reality—and the Lagoon Valley model is gaining international attention and we have an exclusive interview with its lead developer and dreamer Curt Johansen. 

85% wild, 100% intentional

The homes—ranging from cottage-style bungalows to age-qualified residences with ADUs—follow rigorous green build principles. They’re designed to meet or exceed California’s already high standards for energy and water efficiency, integrating solar, thermal-pane windows, energy-star appliances, and wastewater-saving systems. 

But Lagoon Valley goes beyond checklists and LEED points for green builds. It’s an experiment in sustainability and conservation communities as a lived experience. A walkable town center, an upcoming organic farm-to-table hub, and clustered neighborhoods that reduce land disturbance are just some of the features aimed at helping residents reconnect with the land and each other. And it’s a place which considers all ages and all kinds of people from families with babies and toddlers to teens and seniors. 

A shift in values, not just real estate

From Europe to the Pacific Northwest, we’ve been tracking the rise of conservation communities—places where long-term ecological thinking drives planning, not short-term gains. Lagoon Valley adds a uniquely Californian flavor to this trend, blending progressive design with deep ecological awareness. It’s not just a real estate offering, it’s a cultural reset.

Conservation has too often been outsourced or compartmentalized. Lagoon Valley developers are saying, what if it’s central? What if your home, your walk, your food, your school, your view—what if all of that is part of the regenerative whole?

Be inspired by our in-depth interview with Curt Johansen, where we dig deeper into the lessons Lagoon Valley offers for the future of green build communities. We’ll explore how developers, planners, and residents alike can reclaim stewardship—and why this model may hold the key to a more sustainable, meaningful way of life.

Curt Johansen is the Development Director of Lagoon Valley, Northern California’s first conservation community. A longtime advocate of sustainable development, Johansen brings decades of experience designing and managing environmentally responsible, mixed-use communities across California. 

He is a founding partner of UrbanSmart Growth and has led major projects such as Bay Street in Emeryville and the redevelopment of American Canyon in Napa County. His work is rooted in the principles of Reconciliation Ecology—integrating human communities within natural ecosystems—and emphasizes long-term stewardship, biodiversity, and affordable housing. Johansen is known for championing patient capital and regenerative land-use models that prioritize people, place, and planet.

Green Prophet: You’ve said Lagoon Valley turns traditional development ‘on its head.’ What does true land stewardship look like when people are no longer separate from nature, but part of the ecosystem?

A: True land stewardship in Lagoon Valley means recognizing that humans are an integral part of the ecosystem, not separate from it. Instead of dominating or circumventing nature, we actively work to integrate our community within wildlife habitat corridors. Inspired by the principles of “Reconciliation Ecology,” Lagoon Valley minimizes its impact on the environment while allowing residents to learn from and coexist with diverse species of native plants and animals. 

Lagoon Valley becomes a living laboratory where residents reconnect with nature through activities like hiking, birdwatching, and biodiverse agriculture — revitalizing our innate “biophilia,” or love of nature. This not only preserves biodiversity but also enhances residential quality of life, making Lagoon Valley a pioneering model for community-driven, harmonious coexistence with nature.

How did your team ensure that the cultural and ecological memory of the land guided development, not just the economic bottom line?

A: Significant time and financial resources were employed to understand culturally historical conditions, including the avoidance and mounding above obsidian flakes along with careful reconstruction of Native American stream locations. Also, extensive plant and wildlife habitat areas were restored to the master plan, in lieu of far more invasive prior development approvals, to remain as open spaces.

With 85% of the land preserved as open space, how do you measure success—not just in terms of real estate sales, but in community well-being and biodiversity?

A: Recognition by State biologists regarding the success of our new Wetland Preserve has been a strong measure of biodiversity flourishing. Our residents are consistently attracted to the community’s conservation/open space commitments, ranking community open space as the most prominent amenity of the community, and they are engaged with actively getting involved in conversations around ecological literacy.

How can Lagoon Valley become a replicable model for other developers, especially those working in climate-vulnerable regions where affordability and conservation often clash?

A: The potential for success with any attempt at a medium-to-large scale, live-work-play conservation community requires a willingness to cooperate with development innovation on the part of the municipal jurisdiction involved with oversight approvals. On the equity development side, the model is replicable when one has patient capital providers that understand the long-term value return from conservation communities. I have been blessed with two amazing partners who understand and support my work.

Community-Supported Agriculture and education programs are part of the plan. How do you see food, farming, and learning as tools for rebuilding human-nature relationships?

A: Over many years I have observed closely the effect Community Supported Agriculture has on neighborhoods that support their CSA. One important effect is resident bonding around farm-to-table, healthier family eating habits. When kids (and adults of all ages) experience the careful and hard work it takes to produce healthy vegetables and fruits, they also notice a big difference in quality between organic food locally grown from what they buy from the industrial ag system that ships food products an average of 1,300 miles each day and loses to spoil almost one-third of its output. 

I had the great pleasure of meeting Wendell Berry to glean what insight I could from his inimitable wisdom regarding proper farming, and it was transformative. He helped me understand that true knowledge of place is intrinsically tethered to a true knowledge of local agriculture, and that for farmers who bring to the local market products from quality soil, without pesticides or herbicides, without pollution, grown and harvested with labor paid a living wage, it is worth the small extra cost to residents because of the long-term benefits to their health and the “social community glue” CSAs provide.

In your view, what role do residents play in shaping and sustaining this vision? How do you cultivate a sense of responsibility beyond just living in a ‘green’ neighborhood?

A: Fostering sustainable behaviors in green communities still requires altering existing behaviors, and that comes from instilling a problem-solving, communally-activated approach to prompting healthier behaviors. When resident leaders are trained to present win-win outcomes for their neighbors, it can be inspiring to see how positive outcomes can be recognized and emulated. Creating opportunities for environmental volunteerism in activities that appeal to neighbors helps residents to get to know the open spaces surrounding them more intimately, which in turn invests them in taking greater care of these sacred places.

What advice would you offer to cities or developers who want to transition from extractive models of building toward regenerative, community-centered development?

A: If I had the power to do so, I would require every land developer and every public servant with influence in land planning to visit existing conservation communities and see the difference over time between how home values appreciate instead of depreciate and how residents are generally happier in their neighborhoods. So many of us suffer in varying degrees from the idea of Nature Deficit Disorder. Physically visiting and interacting with residents living in sustainable communities is paradigm-shifting.

We often hear concerns that sustainable communities might sacrifice resale value or long-term investment. What are you seeing—or expecting—when it comes to property value in a place like Lagoon Valley, where ecological integrity is part of the design?

A: Home resale values in successful conservation communities typically outpace the overall market. A good example close to Lagoon Valley is Village Homes in Davis, CA, which has been around for almost 50 years and continues to thrive both ecologically and financially for its residents who are passionate about preserving the many sustainable features embedded in their community’s planning. Other notable conservation communities that have thrived in many ways, including the appreciation of home values, include Prairie Crossing just north of Chicago and Serenbe, just south of Atlanta, to name a few. Sustainability in communities is increasingly seen as long-term enhancement of property values, whereas depreciation is still the norm in many markets where the negative long-term social impacts of conventional, unsustainable development increase over time.

Do you have a childhood memory of being in nature/wishing you were in nature that informs the work you do today? 

A: Until the age of 9, I was a city kid living in New York with lots of concrete in my neighborhood and not much nature. But I was fortunate to have relatives who owned a small family farm on Long Island, when one could take the train for a visit. I still recall vividly my first taste of an organically grown, vine-ripened tomato, many of which my Italian grandmother would use to make spaghetti sauce for the family. It was magnificent and I’ve never forgotten that revelation.

Thank you Curt! 

As cities face the twin pressures of climate instability and housing crises, Lagoon Valley reminds us that sustainability doesn’t mean sacrifice: it means design with intention. It’s a reminder that large-scale development, community and ecological integrity don’t have to be at odds. With 1,300 acres of preserved open space, a thriving local food vision, and a blueprint guided by civic participation, responsibility, and care, this new housing development project shows that living in harmony with nature isn’t just possible—it’s desirable.

To learn more about Lagoon Valley, visit their website: https://lagoon-valley.com/

The post Rewilding the Suburb: Lagoon Valley’s Profound Plan for Conservation Community in California–– An Interview with Developer Curt Johansen appeared first on Green Prophet.

New agreement aims to shield radio astronomy from satellite interference, but the night sky faces growing threats.

The Bigger Picture: Space Junk and a Dimming Night Sky

The post SpaceX and SETI Partner to Protect Alien-Hunting Telescopes—But What About the Rest of the Sky? appeared first on Green Prophet.

California has always been known for big dreams and bold lifestyles. From sunny beaches to scenic mountains, buzzing cities to peaceful suburbs, every corner of the state offers something a little different and a lot to love.

You’ll find cozy coastal towns, tech-savvy hubs, and family-friendly suburbs all in one giant, golden package. If you’ve been browsing homes for sale in Alameda, CA, or daydreaming about a fresh start, this list might help you narrow things down. So, read below and then decide — would you live in one of these 10 regions of California?

1. Alameda, CA

Alameda is a hidden gem on the Bay, blending coastal charm with an easygoing lifestyle. Once a naval base, it has grown into a vibrant, walkable island city with lots of green space, waterfront trails, and stunning views of San Francisco. You’ll find a mix of historic homes and new developments, plus a fun downtown with restaurants, bookstores, and local shops.

Life here feels both laid-back and connected. And bonus, there’s even a beach right in town for spontaneous sunset strolls and weekend picnics.

2. Folsom, CA

Folsom has a great family atmosphere and a tight-knit community. It’s perfect if you want more room but still want easy access to the city and shopping. Parks, great schools, and outdoor fun, such as biking the American River, are all here.

The town is also full of history — yes, the Johnny Cash kind — and you’ll see that mix of old and new everywhere you go. There’s even a zoo sanctuary and a lively historic district that makes downtown feel like a small-town movie set.

3. Palo Alto, CA

In the heart of Silicon Valley, Palo Alto is a magnet for tech professionals and innovation seekers. It’s home to Stanford University and some of the biggest names in the tech world. It’s also full of tree-lined neighborhoods, top-rated schools, and sleek downtown spots for coffee, dining, or weekend strolling.

Living here isn’t cheap, but if you want to be where big ideas happen, Palo Alto leads the pack. You never know when you’ll spot someone coding a billion-dollar startup at the next table.

4. Cupertino, CA

Cupertino blends high-tech and high quality of life. Known as Apple’s hometown, the city is clean, safe, and full of beautiful parks and highly rated schools. You’ll also find tons of cultural diversity, amazing food options, and community events throughout the year.

The neighborhoods are peaceful, the vibe is welcoming, and you’re just a short drive from the Santa Cruz Mountains for weekend hiking and fresh air. And yes, the Apple Visitor Center has a rooftop view that makes even non-techies swoon!

5. San Ramon, CA

San Ramon is all about balance. It’s a place where you can build a career, raise a family, and still enjoy weekend hikes or a quiet evening at a wine bar. The city has been growing fast, with new shopping centers, parks, and business hubs.

Large companies like Chevron and GE have offices here, which means job opportunities are close to home. Add in good schools and community festivals, and you have a strong option for long-term living. You might even catch a free outdoor concert or food truck night in one of the newer town squares.

6. Encinitas, CA

If beach town vibes are your thing, Encinitas might be calling your name. Located just north of San Diego, it’s known for surf culture, coastal cliffs, and a laid-back lifestyle that never tries too hard. Spend your mornings walking the beach, afternoons exploring boutiques, and evenings enjoying live music or sunset views.

It’s the kind of place that makes every day feel like a vacation — only with real neighborhoods and a real sense of community. Locals ride bikes with surfboards attached, and you’ll probably see a dog or two catching waves.

7. Mountain View, CA

Another Silicon Valley hot spot, Mountain View manages to feel both tech-forward and down-to-earth. It’s home to Google and other major companies, but the city itself has a welcoming vibe with great parks, a charming downtown, and friendly neighborhoods.

There are farmers markets, music in the park, and bike paths everywhere. If you want to stay connected to the innovation scene while enjoying a more relaxed pace, Mountain View offers a nice blend of both. Castro Street, the downtown hub, is packed with international eats and some of the best ramen you’ll ever try.

8. Dublin, CA

Dublin is one of the fastest-growing cities in Northern California, and for good reason. It has new schools, modern shopping centers, and plenty of fresh housing options. With easy access to both I-580 and BART, it’s a solid location for commuters heading into Oakland or San Francisco.

It’s also family-friendly, diverse, and full of parks and activities to keep weekends interesting. If you’re looking for a place on the rise, Dublin’s worth a look. And if you’re into celebrations, their annual St. Patrick’s Day Festival is pretty legendary.

9. Santa Barbara, CA

Santa Barbara delivers coastal living with a touch of luxury. With Spanish-style architecture, ocean breezes, and mountain views, this city has a look and feel that’s hard to beat. You’ll find local wineries, world-class dining, and beaches perfect for a morning jog or a lazy afternoon.

It’s calm, elegant, and packed with charm. If you want a peaceful, upscale lifestyle with plenty of sunshine, this is the spot. Oh, and there’s a farmers market nearly every day of the week — because fresh strawberries are a way of life here.

10. Irvine, CA

Safe, clean, and master-planned, Irvine is a favorite among families and professionals alike. It offers some of the best public schools in the state, plus easy access to jobs, shopping, and outdoor recreation. Irvine’s neighborhoods are thoughtfully designed with parks, pools, and walking trails.

The city also takes pride in being green — literally and environmentally. It’s a great pick if you’re looking for structure, stability, and a high quality of life. You can hit the beach, go hiking, and still be home in time for a boba run at one of the city’s many tea spots.

Ready to Pick Your California Dream?

From coastal charm to tech hubs, chill surf towns to family-friendly suburbs, the places on this list show off the best California offers. Now, would you live in one of these 10 regions of California? You just might find that the answer is yes.

Explore, visit, and get to know what each spot brings to the table. Your perfect corner of the Golden State might be closer than you think.

The post Would You Live In These 10 Regions of California? appeared first on Green Prophet.

A little-known $15 billion deal between PG&E and the Department of Energy is raising concerns for California residents. The agreement, which will expand hydropower, also includes shutting down the Ivanpah solar plant, which has been providing energy to 140,000 homes.

Without this reliable source of clean energy, California’s already overburdened power grid will struggle, leading to higher energy costs and more frequent blackouts. Critics argue that while PG&E benefits financially, everyday Californians will be left paying the price with increased bills and an even less reliable power system.

Questions are also being raised about possible conflicts of interest with key players in the deal, making it even more controversial. We spoke with one of the main investors of the $2.2 billion Ivanpah plant to learn more.

___

In the final days of the Biden administration, a major energy deal quietly unfolded that could have long-lasting consequences for California’s power grid and taxpayers. A $15 billion loan guarantee from the Department of Energy (DOE) to Pacific Gas & Electric (PG&E) for hydropower expansion has raised concerns about energy reliability, cost, and who ultimately pays the price. This deal, which has been largely unreported, suggests that the Biden administration orchestrated a backroom agreement that benefits PG&E while undermining California’s already fragile grid.

The heart of the issue lies in PG&E’s agreement to buy out Ivanpah’s power purchase agreement (PPA), which will result in the shutdown of the Ivanpah solar plant, a major renewable energy facility. With Ivanpah’s closure, the 140,000 homes it powers will have to rely on the already overburdened grid, especially during peak demand hours. This will further strain the grid at times when energy consumption is highest, leading to more frequent blackouts and an even less reliable power system for California.

Related: what we can learn from Ivanpah’s failure

What’s more concerning is that the energy PG&E will lose from Ivanpah, which can be one of the most affordable sources of power during peak demand, will need to be replaced by energy purchased from the market. However, PG&E’s market purchases are expected to come at a significantly higher cost. These increased costs are likely to be passed on to ratepayers, ultimately negating any supposed savings from the deal and potentially causing long-term rate increases for California consumers. The decision to shut down Ivanpah not only jeopardizes energy reliability but also threatens to undermine the state’s clean energy transition.

A better alternative would have been for the DOE to restructure Ivanpah’s loan, allowing the facility to remain operational while investing in energy storage technologies to help meet peak demand. “Ivanpah  produces power for 140,000 homes, and has been a reliable source of energy for California residents for over a decade,” said Neal Lee, Vice President of CMB, one of the lead investors in the Ivanpah project to Green Prophet.

Related: Why the Collapse of a $2.2 Billion Solar Dream Threatens the Future of Renewable Energy

“We applaud the Trump Administration’s efforts to unleash the full power of American energy, and rectify the bad deals the previous administration struck that will take energy off the grid. We look forward to working with Secretary Wright to help implement his all-of-the-above energy strategy, and are excited to continue our work with the Department to find more ways to provide affordable, reliable energy during high-demand hours.

“Continued innovation in this plant will expand its capacity and its lifespan, and ensure it powers homes in a state that needs it long into the future,” he added.

Adding to the complexity of this story is the recent hiring of former Energy Secretary Jennifer Granholm to the board of Southern California Edison (SCE), which receives energy from the Ivanpah plant, says an undisclosed source close to the deal.

“We’re thrilled she is joining our boards, and we look forward to the guidance she will provide based on her understanding of the technical, political and economic forces shaping our industry today.” said Pedro J. Pizarro, president and CEO of Edison International, in a statement.

This move raises questions about possible conflicts of interest, given Granholm’s involvement in shaping energy policy during her tenure as Secretary, alludes an advisor working with Lee. “Her new role with SCE has prompted concerns that her influence may have played a role in orchestrating deals like the one between PG&E and the DOE, potentially prioritizing the interests of private energy companies over those of California’s residents,” the source says.

At the heart of this issue is the fact that, while PG&E stands to benefit from the loan guarantee and the Ivanpah deal, it is California’s taxpayers and residents who are left to bear the costs. The shutdown of Ivanpah will weaken the state’s energy infrastructure, could increase the likelihood of blackouts, and may ultimately raise electricity prices. PG&E is under no obligation to replace Ivanpah’s energy at a cost-effective rate, meaning ratepayers are likely to feel the financial strain for years to come. The deal appears to be a short-term gain for PG&E, but at the expense of long-term energy reliability and affordability for California residents, says our source.

__

CMB holds the equity position in Solar Partners that was originally owned by BrightSource (now Kelvin Energy). Solar Partners is a larger group that includes NRG, Google, and Kelvin, all of which own and operate the Ivanpah power plant. CMB is also one of the primary investors in Kelvin Energy, which holds a 13% stake in Solar Partners. In short, CMB is involved both in owning part of the Ivanpah power plant through Solar Partners and as a major investor in Kelvin Energy.

The post PG&E’s $15 Billion Deal Could Mean Higher Energy Costs and More Blackouts for Californians appeared first on Green Prophet.

Exclusive Interview: Pioneer Scientist Moshe Luz Dispels Myths and Reveals How Ivanpah’s Failure Could Stall Bold Investments in Green Tech

California is shutting down its $2.2 Billion CSP solar energy project called Ivanpah. And we wrote last week that investing in things that fail is worthwhile. One of the key scientists behind this technology, Moshe Luz, reached out to Green Prophet to dispel some myths and answer some questions. He argued that claims of bird deaths from CSP are only myths and that Ivanpah’s closure could hinder future renewable energy projects by discouraging investors from taking risks.

Luz emphasized the need for bold investments to advance renewable technology. He suggested that smaller, modular CSP plants could reduce financial risks and attract more investors. Luz also highlighted the importance of balancing innovation with financial sustainability. He noted that government subsidies play a crucial role in supporting renewable energy but warned that dependency on them could jeopardize long-term viability.

The Ivanpah Solar Power Facility, a $2.2 billion concentrated solar plant in California, was once hailed as a breakthrough in renewable energy.

Regarding future energy sources, Luz expressed skepticism about the sole reliance on wind, solar, or hydro, pointing instead to nuclear and fusion energy as more sustainable alternatives. He emphasized the need for technological advancements in miniature turbines and molten salt systems to make CSP more cost-effective. His insights underline the challenges and potential of CSP in the evolving renewable energy landscape.

“A very interesting article,” he writes, “I’m not going to argue if the CSP is good or bad, but to reiterate the urban legend, ‘it is known to kill birds that pass by it,’ is absolutely bad because it is not true. All claims about ‘birds evaporating in the air,’ and other nonsense, were rejected scientifically. Whenever a white elephant such as Ivanpah is shutting down – it is bad.

“It means that the bankability of future projects is at risk, and without these daring initiatives the progress is going to be very slow. If investors are deterred from taking risks we will see only very small steps, playing safe. We need brave people and organizations that will be the first to cross the sea. For them it is not encouraging and they will tackle higher barriers,” he tells Green Prophet.

Moshe worked with BrightSource, the company that built the Ivanpah facility but left the company about 5 years ago.

CSP stands for concentrated solar power. It is a technology that uses mirrors or lenses to focus the sun’s energy to a receiver point which heats a fluid to produce steam that drives a turbine to generate electricity. When combined with molten salt, the heated salt stores energy, allowing power generation even when the sun isn’t shining, improving reliability and efficiency. To note, Ivanpah runs steam in its pipes (not molten salt) and it does not have storage (Thermal Energy Storage).

We asked Moshe about the future of CSP and the bankability of new technologies that widen the possibilities for renewable energy. 

Questions for Moshe Luz

You seem to suggest that the failure of Ivanpah is a blow to the bankability of future renewable projects. In your opinion, what could have been done differently to ensure its success, and how can future projects avoid similar pitfalls?

Some projects are “doomed” to end up as white elephants. If the technology is not mature enough, the results might fall below expectations, in some cases – while inflicting losses to the investors. This is the nature of the beast… It might be a result of bad design, wild assumptions, ignoring facts and data, very high and unjustified targets or going to the market before the “t”s are crossed and the “i”s are dotted – the designer / manufacturer freezes the design before the job is done because of the pressure to go to the market. There is no proven medicine for these diseases. 

What do you think needs to change in the approach to solar power development to make it more cost-effective and viable in the long term?

The present CSP is very expensive and the risks are high. This is why a failure (and there were several) might deter investors from giving money to such plants. Building much smaller plants, where the risk is much smaller as well, will enable more investors to consider the risk as “tolerable”.

So – the solution might be the development of small, modular CSP plants.

You mention that brave organizations should take risks. In your experience, how do you balance the need for innovation with the importance of financial sustainability in such large-scale projects?

There are 2 ways: in the private market the profit from a successful project should be high enough to tempt an investor to take the risk. At the state level, the benefit (not necessarily the profit) should justify the sacrifice of public money in order to promote a project that might lead to better ones. Such was the pilot of “Solar II” that was financed as a test bench for molten salt CSP. 

You believe that the future lies in nuclear and fusion energy rather than wind, solar, or hydro. Can you explain why you feel that way, and how do you see these technologies evolving in the coming decades?

The consideration should be balanced between the risks: all power sources affect the environment but the extent and magnitude should be calculated. We learn slowly about the influence of renewable sources on our planet.

For example: if the average efficiency of the PV after some degradation is 20%, it means that 80% is converted into heat. How is it in comparison to bare sand or even a green forest? Do we reduce the heat absorption or increase? What about the influence on fauna and flora? About birds, insects, wildlife etc.?

Remember the turmoil about the birds in Ivanpah – now there are claims that the blades of wind turbines are vibrating and affecting the birds as well. We have experience with nuclear power and it is not so bad although Chernobyl and Fukushima left a trail of devastation.

Imagine the possibility of a collapse of a huge dam, such as Hoover dam or Aswan dam – what will be the result? Can we guarantee that this will never happen? The 2 major advantages of nuclear power is the very small footprint they have and the ability to provide electricity with minimal pollution if maintained properly.

Could you share your thoughts on the role of government policies and subsidies in encouraging or hindering renewable energy advancements? Do you think current incentives are enough?

Please see my reply above about brave organizations. For sure a subsidy of renewable technology might promote their development. LUZ used the subsidy to justify the installation of its CSP plants, which were copied by dozens of other plants, but when the government stopped the money – the justification disappeared.

Yet – the technology survived. Ivanpah also used subsidies and the tower technology evolved from the innovative concept of heliostats field and power tower.

You’ve worked with BrightSource for many years. In hindsight, are there specific lessons learned from your time there that could help future CSP projects succeed?

One very important lesson: if you work on a technology that consumes so much money for each unit – you must work “lean and mean”. BrightSource was a very good place to work, but its burn rate was too high. In some cases it identified changes in the technology too late, which left it behind other competitors.

And above everything: these groundbreaking companies need A LOT OF MONEY!

You mention that climate change has always affected our lives and always will. What is your perspective on how human intervention through renewable energy can address current and future climate challenges?

I don’t hold myself to be an expert in climate changes or renewable energy. Yet, I’m old enough to remember the panic about global cooling in the 70s: it was assumed that the accumulation of ice in the poles will cause the seas to rise and flood the coasts… sounds familiar?

There was a plan to spread coal dust over the ice caps (from C130 airplanes) in order to increase the absorption of heat and thus melt the ice. Today, I’m not convinced that we are responsible for the changes. I read the book “Unsettled” by Steven Koonin and I am convinced that I’m not convinced: do we affect the changes that much, that it is in our hands to change the direction of the change?

I was also impressed by the book “The Famine Was Severe In The Land” by Arie Issar and Mattanya Zohar that claimed many years ago that the fluctuations in the climate in the Middle East caused geo-political changes – without human intervention in the climate. So – I hesitate to declare if we are the cause of the change and if we are a considerable factor in the direction and / or magnitude of the change.

As an expert in the field, what innovations in solar technology or energy storage do you find most promising for the future of CSP?

Without being an expert, I think that there are 2 technologies that might contribute to the CSP industry:

1). a miniature turbine or heat engine, not necessarily a steam  turbine, in the size 1-10 MWth (megaWatt thermal). This will enable local small modular CSP plants to be installed where needed and

2). a steady improvement in the equipment for molten salt: pumps, valves, instrumentation. This, together with a reduction in the cost of material (pipes, heat exchangers, solar receivers), will enable the small units to turn into commodities. I’m not aware of any major change that will guarantee the future of CSP.

More about Moshe Luz

Moshe Luz is an accomplished engineering professional specializing in renewable energy, with a particular focus on molten salt thermal energy storage and concentrated solar power (CSP) systems. His last position was as the Molten Salt Director at Luminescent Solar Power Ltd. in Israel, he brings over two decades of leadership and project management experience to the renewable energy sector. He currently works as a freelance consultant.

Previously, Moshe was the Director of Construction for the Northern Sectors at NTA – Metropolitan Mass Transit System Ltd., overseeing infrastructure development for the light train in Israel’s Dan District. His expertise in complex engineering projects was further honed during his tenure at BrightSource Industries Israel (formerly Luz2), where he spent nearly nine years in various strategic roles. These included Project Manager and Product Manager, where he supervised the design, production, and supply of Molten Salt Solar Receivers for the Dubai DEWA solar tower, part of the Noor Energy 1 – 700MW CSP Project.

Moshe also played a pivotal role as Owner’s Engineer for the Ashalim Plot A Solar Plant in Israel, ensuring compliance with contractual obligations and performance standards. His leadership extended to managing the Solar Energy Development Center (SEDC) in Dimona, Israel, a test site for innovative solar receiver and heliostat technologies.

Earlier in his career, Moshe gained extensive project management experience in desalination and energy sectors with prominent companies such as Paz Oil Company, Bateman Litwin, and Oran Safety Glass OSG. His international exposure includes overseeing large-scale infrastructure and utility projects in Nigeria and managing multi-disciplinary engineering teams worldwide.

With a robust background in infrastructure, project management, and renewable energy innovation, Moshe Luz continues to be a driving force in advancing solar thermal technology and sustainable energy solutions.

In Hebrew, “luz” means almond, though in some editions of the Bible, it is translated as hazel.

The post Ivanpah’s Sunset: Why the Collapse of a $2.2 Billion Solar Dream Threatens the Future of Renewable Energy appeared first on Green Prophet.

As the deadly California fires persisted into a second week, a West Virginia University air quality expert said people within hundreds of miles may experience the effects.

Timothy Nurkiewicz, professor of the physiology, pharmacology and toxicology in the WVU School of Medicine, said he also believes that — beyond any immediate health concerns — a swift, thorough cleanup must occur to prevent lingering effects in the environment.

“The folks within a 10-mile radius are in the greatest peril. With extremely high air pollution resulting from the fires, even a healthy person may have irritation of the eyes and complications breathing. What we’re seeing in hospitals are people with asthmatic events and bronchitis.

“For those with pre-existing conditions, cardiovascular diseases can be exacerbated after inhalation exposure to this smoke. That could mean symptoms such as elevated blood pressure and chest pain.

“What we’re seeing in Los Angeles is called a ‘wildland urban interface fire.’ This is different from a typical wildfire. In a wildland urban interface fire, you have housing and urban environments built up against and in the wildlands.

“Now we’re getting two different profiles of toxicants — one from the wildlands and one from the urban environment and its building materials. The frequency and intensity of these fires will continue to increase with ongoing development and building into the wildlands.

Nurkiewicz directs the Center for Inhalation Toxicology, a research hub for investigators to measure, identify and discover how air particles affect human health.

“It’s fair to estimate that the smoke will travel hundreds of miles away. But the smoke will be diluted down by the time it reaches mid-America,” he warns.

How can authorities and people help slow the damage?

“While everyone’s focused on the immediate effects, as they should be, there must be cleanup after the fire, says Nurkiewicz. “A smoke plume is going to cover a tremendous area and that smoke will settle into the environment we’re interacting with. It’s like cigarette smoke. If someone’s sitting in a room smoking cigarettes, it will settle onto surfaces. It’s the same thing with these fires. You can’t just leave all these ashes around and not have some sort of exposure.

“The problem is bigger than just the smoke we’re inhaling.”

The post California wildfires will hurt your lungs as toxic burnt building pollution drifts appeared first on Green Prophet.

The Californian fires are devastating and no doubt families will want to rebuild what was lost. There is a lot of talk on social media platforms, like by investor Bill Ackman who is looking to invest in AI technologies to predict and help drones stop fires. But sometimes, vernacular building and sound ecological practices can save the day before technology, in a space called low-tech.

Fire hydrants and water packed drones might put out a fire if caught in time, but disaster-proofing your future might be a sound and sustainable move. Hemp blocks, also known as hempcrete are already on the market and are eco-friendly and sustainable construction materials composed of hemp, lime, and water.

In a recent study scientists look at the fire behaviour and structural performance of hemp-based materials in varying formats. They tested raw hemp shives, hemp blocks, and non-load-bearing hemp block walls.

Researchers tested how various kinds of hemp reacted in fire safety and strength tests. 

The study found that hemp blocks don’t catch fire with open flames but rather just smolder slowly, producing very little smoke. In fact, walls made of hemp blocks stayed structurally intact for 2 hours during fire tests.

Tests conducted include cone calorimeter, bomb calorimeter, standard furnace, heat-transfer rating inducing system (H-TRIS), and small-scale elevated temperature material tests. Hemp shives exhibit ignition with sustained flaming, a relatively high heat release rate (HRR), and a relatively low critical heat flux (CHF).

However, the hemp blocks exhibited no flaming ignition, only smouldering combustion, and an HRR an order of magnitude lower. Hemp blocks and hemp shives produced minimal smoke. Hemp blocks charred, and associated discoloration zones have been documented. Tests indicate that limited structural capacity is lost up until 200 °C, whereas at 300 °C, the residual material strength is almost negligible.

Their conclusions were that the hemp block walls maintained their structural stability and integrity for 2 hours of standard fire testing. The ambient-temperature compressive strength of the hemp blocks was determined to be 1.0 MPa. This work is the first comprehensive study on the fire behaviour of hemp blocks and highlights their good performance, whereby they are likely to have a limited impact on fire risk in buildings.

Plastered walls will have a fire performance exceeding those reported in the study, the researchers say. The work was reported in the Journal of Building Engineering.

The research was led by Yohannes Werkina Shewalul and Richard Walls from Stellenbosch University, South Africa. 

Hemp, or industrial hemp, is a plant in the botanical class of Cannabis sativa cultivars grown specifically for industrial and consumable use. It can be used to make a wide range of products. Along with bamboo, hemp is among the fastest growing plants on Earth which makes a great, hearty, sustainable fiber. It has taken nations years to recognize hemp as a viable building and material alternative because tiny amounts of the active ingredient of THC can be found in hemp.

Companies producing hemp blocks:

The post Build a fire-proof home with hemp blocks appeared first on Green Prophet.

Michael Pollan, in Defence of Food, once called Americans “corn people” for the amount of corn products in their diet. As the world fights to find viable alternatives to plastics, the people may have found the best bio-polymer, made from… corn.

Corn Next has officially launched CornNext-17, a game-changing bio-based material designed to combat the global plastic pollution crisis. CornNext-17 says it can replace traditional plastics. Derived from renewable corn starch, CornNext-17 utilizes a patented fermentation-based process to create a fully biodegradable material with superior versatility and performance.

Related: this edibles company uses Tipa’s biodegradable plastics

Unlike traditional plastics and bio-plastics such as PLA and PHA, CornNext-17 retains its natural polysaccharide structure, enabling rapid decomposition within 30 days in natural environments while maintaining the mechanical properties necessary for diverse applications. We all know that most plastics are never really recycled and when they are the process is toxic. The only solution to the plastic problem is a bio-based plastic. One that can fully decompose and degrade, not just break down into littler bits of plastic.

“CornNext-17 represents a significant leap forward in sustainable materials,” said Randy Yongzhong Zhang, Founder and CEO of Corn Next. “We are proud to offer a solution that addresses the urgent need for environmentally friendly alternatives to conventional plastics. The development of CornNext-17 is guided by our vision to revolutionize how materials are used and discarded. As a fully natural biodegradable innovation, it marks not just a breakthrough in material science, but a significant milestone in humanity’s pursuit of a greener, more sustainable future.”

Key Features of CornNext-17

• Fully Biodegradable: Decomposes naturally within 30 days, leaving no harmful residues.
• Versatile: Suitable for a wide range of applications, including packaging, consumer goods, and industrial components.
• Cost-Effective: Produced through an efficient manufacturing process, offering competitive pricing.
• High Performance: Exhibits excellent mechanical properties, including strength, flexibility, and heat resistance.
• Eco-Friendly: Derived from renewable corn starch and produced without harmful chemicals.

Market Potential and Industrial Applications

CornNext-17 has the potential to transform multiple industries by replacing traditional plastics with a sustainable alternative:

• Consumer Goods: CornNext-17 is ideal for creating compostable tableware, single-use products, food containers, and eco-friendly packaging solutions that cater to environmentally conscious consumers.
• Packaging Industry: The material’s strength, flexibility, and resistance to heat and moisture make it a superior choice for biodegradable packaging, including retail, food, and industrial applications.
• Agriculture: CornNext-17 can be used to manufacture biodegradable mulch films, seedling trays, and irrigation components, reducing waste and enhancing soil health.
• Medical and Healthcare: With its ability to decompose fully, CornNext-17 is well-suited for disposable medical supplies such as gloves, syringes, and packaging, ensuring environmental safety.
• Automotive: Lightweight and durable, CornNext-17 can be utilized in creating automotive components such as panels, trim, and interior parts, contributing to vehicle sustainability and fuel efficiency.
• Electronics: As a biodegradable alternative, CornNext-17 can replace certain plastic components in electronics, helping reduce electronic waste.

The global push for environmentally sustainable materials positions CornNext-17 to capitalize on increasing regulatory support and consumer demand for green products. Its adaptability, cost-effectiveness, and eco-friendly properties provide a competitive edge in addressing the growing plastic pollution crisis.

Corn Next (or Y & J World Inc.) is a biotech company based in Irvine, California and is dedicated to eliminating plastic pollution. Their bio-based material CornNext-17 is a patented, 100% natural, biodegradable material derived from renewable corn starch.

Unlike traditional plastics, CornNext-17 fully decomposes within 30 days without leaving toxins or requiring costly recycling. After eight years of R&D, the company transformed CornNext-17 into a granular form, securing our proprietary technology and expanding its applications. This innovation led to the world’s first corn-based drinking straw, protein spoon, dinner knife, and forks, with future uses in utensils, dental floss, packaging and more

Corn-based plastics for packaging is a market which reached a market size valued at USD 0.56 Billion in 2022 and is projected to reach USD 1.20 Billion by 2030. 

Bioplastics are derived from renewable biomass sources such as vegetable fats and oils, corn starch, straw, woodchips, sawdust, algae and recycled food waste. Fashion designers like Stella McCartney use bioplastics in fashion, thanks to companies like Balena, which develop a bio-based raw material that looks and acts like rubber but which decomposes at the end of its life.

::Corn Next

The post This plastic is made from corn appeared first on Green Prophet.