Germany has spent $200 billion over the past two decades to promote cleaner sources of electricity. That enormous investment is now having an unexpected impact — consumers are now actually paid to use power on occasion, as was the case over the weekend.

"Power Prices Go Negative in Germany, a Positive for Energy Users" is from the December 25, 2017 Business section of The New York Times. It was written by Stanley Reed and narrated by Kristi Burns.