Industry sources disagree on the magnitude of the tax-equity shortfall and its likely impact on the US market.

Nearly all, however, agree there’s not enough of it available for wind and solar projects today — the word “scarcity” is frequently used — and many expect the situation to get worse before it gets better.

“Among the top three or four providers [of tax equity], if you get them into a quiet room, they’ll tell you that for their current clients they have a shortfall this year of about 50%,” says Chase Weir, chief executive at Distributed Sun, a Washington DC-based solar financier.

For