Buffett called out Berkshire Hathaway Energy CEO Greg Abel during the Q&A to update shareholders about how much energy MidAmerican Energy will get from wind after the Des Moines utility completes its latest project.

Abel said the $900 million investment, announced Friday, will push the amount of energy MidAmerican customers get from wind to 58%.

Munger said distributed generation — wind and solar generated at homes, businesses and nearby “gardens” — will be disruptive to energy markets. But the nation has no other option, he said. “What do you do when you run out of fossil fuels?”