With a record amount of 5.57 terawatt hours (TWh), Germany’s solar power plants in May almost generated as much electricity as all of the country’s nuclear power plants combined (5.65 TWh), the German Solar Industry Association (BSW Solar) said in a press release.

According to calculations by Fraunhofer ISE, 12.3 percent of Germany’s electricity supply that month was provided by PV installations, BSW Solar said. Due to lower prices for PV systems, solar power expansion in the first four months of 2017 was about 64 percent higher than in same period of the previous year, it added, according to celanenergywire.org.

Wind and solar alone could currently provide up to 60 gigawatts (GW) of electricity under ideal conditions, while total consumption can fall to around 50 GW on Sundays, according to experts. This is when most businesses and factories are closed and many people spend the day outside, therefore consuming less electricity. Renewable production tends to peak around mid-day, when sunshine is at its most intense and solar power generation at its highest. Germany has around 40 GW of solar capacity installed.