Before a solar project, Mark Holohan usually gives his customers plenty of time to mull over the cost. But lately, installers are scooping up panels so quickly that Holohan has trouble guaranteeing a price for too long.
"We have a sort of panic buying mode in the marketplace right now. Inventories have fallen. Availability has decreased. Prices have risen," Holohan, the solar division manager at Wilson Electric, said over the clatter of machines and workers in the company's warehouse outside Phoenix, Ariz.