US energy company Vistra claims to be the biggest electricity generator in the US, boasting 37 GW of resources, but it has been changing rapidly and now it has bolstered its nuclear output by buying Energy Harbor, which has about 4 GW of US based nuclear power. This is an unashamed consequence of the Inflation Reduction Act, which offers protection until 2030 for nuclear by offering nuclear production credits. And effectively this is a change in direction for Vistra, showing it prefers the certainty of nuclear over the intermittency of renewables. Vistra used to be the most polluting of all US energy generators, but back after its bankruptcy re-organization in 2016 it began closing coal plants in Texas, Ohio, PennSylvania,…