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

'Unprecedented numbers': Solar industry on track to smash rooftop record

'Unprecedented numbers': Solar industry on track to smash rooftop record

MCS tracker reveals number of small-scale solar installations completed this year has already surpassed long-standing 2011 record

James Murray
clock 14 September 2026 • 2 min read
Are businesses squandering the rooftop solar opportunity?

Are businesses squandering the rooftop solar opportunity?

New report reckons over 90 per cent of suitable commercial roof space still lacks solar installations that could cut energy bills and slash emissions

James Murray
clock 09 September 2026 • 8 min read
Report: Solar has saved EU €30bn in gas imports this year

Report: Solar has saved EU €30bn in gas imports this year

SolarPower Europe highlights energy security benefits the EU has reaped from its solar generation since the Iran war, but warns deployment rates have stalled in 2026

Michael Holder
clock 08 September 2026 • 3 min read