An analysis by financial advisory and asset management firm Lazard has found that the levelized cost of energy from wind power has plunged by more than 50 percent in the past four years.

“While many had anticipated significant declines in the cost of utility-scale solar PV, few anticipated these sorts of cost declines for wind technology,” the report said.

Wind isn’t the only clean energy technology making remarkable progress, according to the Lazard analysis. Solar is on a winning trend as well: