Less headroom, idling, gas and emissions. More insurance?

GB's spinning thermal headroom is down 73% in nine years. Why it matters. And the two ways batteries are unlocking it.

After seeing a succession of low skip-rates and costs on my Skipedia website of late, I decided to pore over millions of data points from the grid going back nearly a decade to pick out the trend at each point in time in what I’d loosely describe as “If NESO (formerly National Grid) wanted to suddenly increase power generation at all gas fired stations to the maximum without firing up any currently offline, how much extra power could they have at their fingertips?”