World's largest solar thermal project heats up in the Californian desert

Jessica Shankleman
clock • 1 min read

Ivanpah concentrated solar power project comes online, offering 392MW of capacity

Ivanpah solar thermal plant aerial shotArising out of the Californian desert, the world's largest concentrated solar power plant has become fully operational, developer NRG Solar confirmed late last week.

The 392MW Ivanpah Solar Electric Generating System achieved the milestone on 31 December, three months after producing first power, NRG confirmed for the first time. The project is the largest of its kind in the world, delivering power for up to 140,000 homes.

The system works by directing sunlight from hundreds of mirrors onto a central tower, which produces steam to drive a turbine that then generates electricity.

The project uses BrightSource Energy technology and is backed by a series of investors, including $168m from Google and a $1.6bn loan guarantee from the US government.

"Cleantech innovations such as Ivanpah are critical to establishing America's leadership in large-scale, clean-energy technology that will keep our economy globally competitive over the next several decades," said Tom Doyle, president of NRG Solar in a statement.

"We see Ivanpah changing the energy landscape by proving that utility-scale solar is not only possible, but incredibly beneficial to both the economy and in how we produce and consume energy."

More on Solar

Hertfordshire Leisure Centre slashes energy bills over 60 per cent with new solar storage system

Hertfordshire Leisure Centre slashes energy bills over 60 per cent with new solar storage system

New 130kWp DC‑optimised solar-plus-storage system forecasted to save the centre around £19,000 a year

clock 07 October 2026 • 2 min read
A permanent discount: Why solar and batteries deserve a frontline role in tackling fuel poverty

A permanent discount: Why solar and batteries deserve a frontline role in tackling fuel poverty

The government should act to lower the upfront cost of clean technologies in order to unlock immediate savings for vulnerable households - and get the UK off the fossil fuel rollercoaster - writes Jenn Humphries from the Centre for Net Zero

Jenn Humphries, Centre for Net Zero
clock 05 October 2026 • 4 min read
UK sets fresh renewables record as solar installations hit 14-year high

UK sets fresh renewables record as solar installations hit 14-year high

More UK solar installations were recorded during the first half of 2026 than during any previous year, new data shows

Michael Holder
clock 29 September 2026 • 3 min read