Back in 2014, Warren Buffett, the chairman and CEO of Berkshire Hathaway BRK.B , famously said “We get a tax credit if we build a lot of wind farms. That’s the only reason to build them.”
Since then, MidAmerican Energy, a Berkshire Hathaway subsidiary, has aggressively built lots of wind farms and now expects to collect $10 billion in federal tax credits on the $12.9 billion it has spent erecting wind turbines. But Buffett’s company’s push to add even more turbines in Iowa is…