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A perfect storm of inflation, supply chain disruption, spiralling interest rates and delays in connection to the UK’s national grid means that the swathe of solar farms approved and going through planning permission in the UK are likely to be severely delayed or cancelled undermining any hopes of achieving a government target of a fivefold increase to 70GW by 2035.

A new study by Huw Evans, an Energy Consultant and former Head of Global Economics for BG Group suggests that under the current macro-Economic conditions and impasse at obtaining connection to the National Grid, any chance of these solar farms being viable in the near future is negligible.

The UK government has gambled heavily on promoting solar energy to achieve its stated goal to be carbon neutral by 2035, he says.

In his report, Evans goes on to say that despite greatly increased prices offered by the Government in their Contract for Difference (CfD) allocation round, to encourage Renewable Energy, where prices have been increased by 30% for Solar Energy, solar developers will still struggle to make any return on their investment.

That is before you take into any account delays in connecting to the national grid. “The UK Government has vastly underestimated the increasing costs to develop solar farms, where their assumptions suggest the UK can develop Solar Energy cheaper than anywhere else in the world; based on published data, which is clearly unrealistic!” he says.

The UK not ideal for solar power

Within the report, Evans points to International Renewable Energy Agency (IRENA) data that shows that given the UK’s climate, solar energy is within the worst 5% areas in the world to develop solar electricity, as only 10%-11% of the capacity of Solar Farms will ever be generated annually compared to double that in places such as Spain, Australia and parts of the US.

For Grid connection, as of November 2023, there are 1,300 projects that are awaiting connection to the grid which amounts to 400 Giga Watts (GW) of Grid access requirements. Companies applying for Grid access have been told they have to wait 15 years before any electricity they produce can be sold.

New rules issued by The National Grid to alleviate the backlog of connections which effectively are “get on, get back or get out of the energy queue” are in danger of creating thousands of acres of White Elephants, as grid connections continue to be delayed with diggers tearing up the landscape and then being suspended as projects are put on hold pending a grid connection date.

Evans points out that this as already happened in Torquay Devon where diggers have already cleared the site only to be told that Grid connection will be at least 5 years and there are indications that that could slip into the mid 2030s.

He further notes that Centrica have said that approximately 80% of the 300 substations across England and Wales need upgrading and “supergrid transformers are huge bits of kit that weigh several hundred tonnes, and it takes years to install them.

“We’re talking five to eight years for each one of these.”

For projects to progress they will probably need an allocation of a Contract for Difference (CfD) in the auction rounds, which come with a deadline of when the project needs to come on stream, a date from The National Grid to be connected which may or may not be in line with the deadline set by the CfD and provide the investor and financiers with a viable return on their investment which in the current climate is very doubtful.

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Mária Telkes, a solar energy pioneer. The Hungarian-American biophysicist and inventor Mária Telkes pioneered solar energy by inventing a solar oven, a solar desalination kit and, in the late 1940s, she helped design one of the first solar-heated houses.

Mária Telkes, born on December 12, 1900, in Budapest, Hungary, emerged as a solar energy pioneer long before the world would turn to renewable energy. She invented a solar oven, a solar desalination kit and, in the late 1940s, she helped design one of the first solar-heated houses. She is known as the Sun Queen.

Telkes, who came from a Jewish family that converted to Christianity, studied at the University of Budapest and then later in Switzerland at the University of Geneva where she mastered chemistry and physics, and earned a Ph.D. in 1924.

In 1925, while visiting her uncle in Cleveland, USA, she worked along the renowned surgeon George Washington Crile who performed the first successful blood transfusion.

Telkes dedicated the next 12 years of her life to researching the energy changes cells undergo during death or cancer, resulting in the publication of their findings in a collaborative book.

Upon becoming an American in 1937, Telkes joined Westinghouse Electric, where her focus shifted towards solar energy in 1939 upon becoming a member of the Massachusetts Institute of Technology’s (MIT) Solar Energy Conversion project.

As the world grappled with the Second World War, Telkes was enlisted by the Office of Scientific Research and Development (OSRD), which worked on the Manhattan Project. Her task was to leverage solar energy to transform salty water into drinkable water, addressing the critical issue of dehydration faced by soldiers at sea.

In response, Telkes invented the first solar water distillation device, capable of producing one liter of drinkable water per day using seawater. This innovation quickly became a standard component in every soldier’s pack, earning her a merit from OSRD for her invaluable contribution.

However, Telkes’ most renowned invention was the creation of the first solar house in 1948, the Dover Sun House, near Boston, designed by Eleanor Raymond and tested by the Némethy family, Telkes’ relatives.

To tackle the challenge of storing solar energy for use on cloudy days, Telkes ingeniously employed a glauber salt solution (natrium sulfuricium) with a low melting point (32 °C) and high enthalpy of fusion, capable of storing solar energy for up to ten days.

Despite initial challenges – the unusually cold winter of 1948 and subsequent leakage in the solution tanks in 1953 – the solar house laid the groundwork for the acceptance of solar energy as a viable heating source.

“It was a proof of premise, a radical idea for her to be thinking that broadly and to think that far ahead and actually create a liveable house as an experiment,” says Andrew Nemethy, who was a boy who lived in the Dover Sun House growing up. “She needed astronauts, and I guess we were the lucky ones,” he said in a PBS documentary.

This marked a significant shift, considering that sustainable development was not yet a recognized term. People began incorporating solar panels into house designs, often complemented by traditional heating systems in areas with insufficient sunny days.

The Dover Sun House was demolished in 2010. A PBS documentary explores the contribution of Telkers and the Dover Sun House that would be heated only by the sun in a New England winter.

Telkes received the Society of Women Engineers Award in 1952, earning the moniker “The Sun Queen” in the United States.

In 1953, when Telkes was at New York University, she received a Ford Foundation grant to develop a solar stove that could be used in developing countries. Like the designs previous, she took a simple approach.

The stove was constructed as an insulated metal box equipped with doors on both ends, topped with glass over the food placement area. Harnessing the sun’s rays, the glass amplified their intensity, aided by four metal plates strategically angled at 60 degrees.

Triangular mirrors positioned between the plates further enhanced the amplification of solar wavelengths. Remarkably, the stove could reach temperatures of 400 degrees, requiring no specialized materials for its construction and boasting an affordable price tag of merely four dollars.

Its user-friendly design (you can download the instructions here) found a welcoming market in midcentury India, precisely the tropical climate its inventor had envisioned. Telkes enthusiastically praised its merits to a reporter during a cooking demonstration, expressing, “Everything seems to taste so much better when it is cooked by the sun.”

In 1977, the American Solar Energy Society honored her with the Charles Greeley Abbot Award. At the age of 90 in 1990, Telkes submitted her last invention, leaving an indelible mark on the field.

Returning to her hometown, Budapest, after 70 years, Telkes passed away on December 2, 1995, at the age of 94. In recognition of her unparalleled contributions, she was posthumously inducted into the National Inventors Hall of Fame in 2012, alongside physicist Dénes Gábor.

Mária Telkes’ legacy endures as an inspiration for future innovators and a testament to the transformative power of solar energy in shaping a sustainable future.

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