Sweden’s biggest wind farm began producing power this month, and the region’s nuclear reactors are feeling the heat. Vasa Vind AB’s Askalen started commercial output on April 1, increasing supplies in a market already bloated by a massive surplus of water for power generation. A day later, two units at Vattenfall AB’s Forsmark nuclear plant north of Stockholm curbed output by about 50%. Two reactors at the utility’s Ringhals plant are halted because of low power prices.

While there’s no direct link between those events, it’s the latest sign of how renewable energy is crowding out traditional power sources across Europe. The 288-megawatt facility in northern Sweden will boost the nation’s wind output further, after a 50% jump in the first quarter from a year earlier because of a very breezy winter.

“This could mean more frequent periods with rock bottom power prices, forcing conventional generators off the grid, especially when windy conditions coincide with high hydro output,” said Oliver Metcalfe, lead analyst for onshore wind research at BloombergNEF in London.