Google is buying gas. The hyperscale tech company — which invented the power purchase agreement as a way to support renewables development in the 2010s and has been a leader in setting standards for and procuring renewable power — announced on Thursday that it is agreeing to buy the majority of the power generated by a planned natural gas-fired plant in Decatur, Illinois. Here’s the twist: The plant will also capture and store its carbon emissions, a first of its kind installation at co...