Various states are increasing their subsidies, tax credits, allowances, etc, to go to alternatives. As incentives grow, so too, will the markets in this (AE) sector.
As mentioned before, 22 states, right now, require the local elec. companies to buy back at the same rate they sell. That's no small deal.
If a company creates a way to produce excess electricity at an affordable rate, and the state itself offers incentives to such moves to secondary (much less, primary), alternative energy options, the demand for such technoogy will continue to grow.
With O&G prices growing at alarming clips, I suspect alternatives will grow in like proportion.