To produce 10MJ of electricity in one hour (60*60, 3600 seconds) would only require just above 2777W of continuous generation for that hour (a watt is a joule per second). That is a pretty small amount of energy even in the real world. The current Factorio solar panel has a peak output of 60kW, taking less than 3 minutes to produce 10MJ with a single solar panel.Solaris
Produce more than 10 MJ energy per hour without the usage of Steam engine.
Was maybe megawatt hours (1 MWh = 3600 MJ) or another unit intended?