This is really cool, TWG is subsidizing the construction of the solar farm(s).
Assume that TWG stores collectively use 500MWh/yr, as long as Lodestone feeds more than 500MWh/yr into the grid, the power is offset. I hope they account for transmission losses, as the solar installation is not on TWG stores but in some other location. So maybe rather than 500MWh Lodestone will need to feed in 550MWh.