CSP

PV vs. Solar Thermal

Distributed solar modules are gaining ground on concentrated solar thermal plants.

Photovoltaic technologies are beginning to appear more attractive than concentrated solar thermal plants. PV’s competitiveness is improving from technical and operational advancements, as well as significant commitments made by such utilities as Southern California Edison. In the long run, distributed central PV plants likely will gain a strong market position.

Encore for Negawatts?

Congress renews PURPA’s call for conservation and load management, but the world has changed since the 1970s.

The “N-word” in the title first appeared in this journal more than 20 years ago, courtesy of the celebrated environmentalist Amory Lovins and his widely quoted piece, “Saving Gigabucks with Negawatts” (Fortnightly, 1985). Scroll forward a few decades. With restructuring of wholesale electric markets at FERC, plus formation of regional transmission organizations and independent system operators, the game was changed.