Bullish On Europe, China, HK, Plus Notes On Solar Power And Grid Parity

 | Apr 19, 2015 03:44AM ET

A few months ago we wrote a note outlining the rapidly dropping cost of solar power generation, and observing that it was on track to reach “grid parity” in many locations even without government subsidy. (Grid parity simply means the point at which solar will cost the same to ratepayers as electricity from conventional generation.) The reason is clear: falling prices for photovoltaic cells and battery storage, driven by technological improvements.

A recent report from the Rocky Mountain Institute analyzed when grid parity will arrive for various markets -- both for residential (i.e., rooftop) solar and for commercial solar generation. Such projections need to model a variety of scenarios, since we don’t know how rapid technological improvement will be. Typically, parity arrives sooner for commercial-scale solar than for residential.

For commercial solar, the approach of grid parity in several representative regional U.S. markets looks like this: