How are the fixed costs in this? Here in Sweden I have seen a strong trend that as the grid has become more variable and connected to the European grid, a larger portion of the bill becomes fixed. For most part of the year, the fixed costs are now greater than costs that scale with consumption.
Transmission and construction, crewing and maintenance of of thermal power plants (under the name of "reserve energy") cost a lot of money, which in turn becomes fixed grid costs. On top of that you got consumption costs during periods of poor weather, which in combination of high fossil fuel costs means that the consumption prices spikes. The cost of energy during optimal weather conditions is in contrast so low that at this point they can basically just be rounded down to zero.
Transmission and construction, crewing and maintenance of of thermal power plants (under the name of "reserve energy") cost a lot of money, which in turn becomes fixed grid costs. On top of that you got consumption costs during periods of poor weather, which in combination of high fossil fuel costs means that the consumption prices spikes. The cost of energy during optimal weather conditions is in contrast so low that at this point they can basically just be rounded down to zero.