[chokma]

My provider has increased the price by ~27%, to 39¢ / kWh.

Best offer from electricity price comparison sites is 44¢/kWh, so I guess I will stay with them.

People using electricity startups / discount providers (both gas / electricity) have seen them go into insolvency. They are automatically supplied by the base providers who run the networks in their region.

New prices are up to 1€/kWh on the high end. This is less a problem due to shutting down nuclear plants or the CO2 tax, but rather due to the energy market being de-regulated to casino style capitalism (meaning many more investors / companies being allowed to make a quick buck on the end user's expense).

edit: another reason for high energy prices: the former government has decided that wind energy farms require 1km distance from the nearest settlement (compared to less than half that for a coal-driven power plant...). Also NIMBYism prevents the building of desperately needed north->south electricity lines which could transport energy from wind farms to where its needed.