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Must-Run Generation: the Fossil Floor That Spills Solar

Must-Run Generation: the Fossil Floor That Spills Solar

Oct 10, 2026 | Policy & Regulations, Renewable Energy, Smartgrids

A coal plant cannot switch off when the sun comes out. Below roughly a third of its rated output the boiler runs too cool to burn cleanly and the turbine starts to complain, so the plant holds a floor of generation through the brightest, lowest-demand hours of the...
Capacity Factor: Why 1 GW of Solar Isn’t 1 GW of Gas

Capacity Factor: Why 1 GW of Solar Isn’t 1 GW of Gas

Sep 12, 2026 | Renewable Energy, Smartgrids

A power plant’s capacity factor is the share of its theoretical maximum output it actually delivers over a year. It is also why the grid’s headline numbers mislead. In 2025, US nuclear plants supplied about 18% of the country’s electricity from just...