Electricity map gives a more detailed view on the situation, including imports/exports: https://electricitymaps.com/ https://electricitymaps.com/ Poland has a

Electricity map gives a more detailed view on the situation, including imports/exports: https://electricitymaps.com/ https://electricitymaps.com/ Poland has an interesting story behind the price: the government passed legislation which switched from net-metering to net-billing with the start of April, so people rushed to build as many home PV installations as possible to get grandfathered into the previous scheme. A whopping 4-5GW estimated was added to the grid in this period, almost doubling the installed capacity, creating a unique mix of coal and solar in the summer. Now during the day it's what's keeping prices below €250/MWh because even with net-metering the price of this electricity is closer to €175/MWh. In 2019 that would have been horribly expensive, but it's safe to say those times are gone for good.