Then you could look at this move as a hedge against rising energy prices, not entirely unlike his purchase of Burlington Northern Santa Fe. Energy prices are, of course, a hard game to predict, with above-average political risk, especially in the renewables arena...
Fixed revenue usually. Actually to be more precise, fixed price, but declining revenue because the production goes down as the panels (and inverters) degrade. Usually assumed to be .5% per year. The contracts with SCE are typically not based on market prices.
Thanks - that's helpful to know.
I think all the production is pre-sold to the local power utility, possibly at fixed price. Its hard to get the details of these contracts though.