* The French day-ahead contract shed 2.4% to 50.75 euros/MWh. * Solar generation is forecast to diminish in all central-western Europe while wind power is rising, Refinitiv analysts said, adding that this trade-off may leave certain hours with a lower residual load than today. * Electricity generation from German wind turbines is expected to more than double to 11 gigawatts (GW), jumping 6.6 GW day-on-day, while solar power generation is expected to drop 2.8 GW to 3.5 GW, Refinitiv data showed. * French wind power supply is expected to add 420 megawatts (MW) to 2.1 GW, the data showed. * French nuclear power availability rose 1.5 percentage points to 70.2% of available capacity on Wednesday.