A new nuclear reactor, as well as unexpected floods, are leading to a glut of clean energy.
Finland was dealing with an unusual problem on Wednesday: clean electricity that was so abundant it sent energy prices into the negative.
While much of Europe was facing an energy crisis, the Nordic country reported that its spot energy prices dropped below zero before noon.
People pay a markup on the electricity, and often pay agreed rates for power instead of the raw market price.
"Now there is enough electricity, and it is almost emission-free," Ruusunen told Yle, adding that Finns could "feel good about using electricity.".
Excessive meltwater — which has caused flood warnings in several northern European countries — is pushing Finland's hydroelectric plants into overdrive and giving plentiful electricity.
"Production that is not profitable at these prices is usually removed from the market," Ruusunen said. »