"Three times in Wednesday night’s debate, Mitt Romney said that President Obama had plowed $90 billion of federal money into green energy. “Now, I like green energy as well, but that’s about 50 years’ worth of what oil and gas receives,’’ he said. “Ninety billion — that — that would have — that would have hired two million teachers,’’ he said. Is $90 billion accurate? As we reported in August when Mr. Romney first raised the figure, sort of. The $90 billion is a real number drawn from the 2009 stimulus package, but it wasn’t all spent, as Mr. Romney said, and a lot of the green energy spending that went out the door on Mr. Obama’s watch was authorized during the Bush administration. The biggest component of the $90 billion was $29 billion for energy efficiency, of which $5 billion involved improvements in the homes and apartments of low-income households. There was also $18 billion for fast trains and $21 billion for wind farms, solar panels and other renewable energy. Supporters point out that much of the energy spending drew in private capital."