Editing Solar Energy Generating Systems (section)

=== Harper Lake ===
Until [[Ivanpah Solar Power Facility]] was commissioned in 2014, SEGS VIII and SEGS IX, located at  {{Coord|35.031815|-117.347270 |format=dms |region:US-CA_type:landmark |name=SEGS VIII and IX}} were the largest solar thermal power plants individually and collectively in the world.<ref>Jones, J. (2000), "[http://www.osti.gov/accomplishments/documents/fullText/ACC0196.pdf Solar Trough Power Plants]", [[National Renewable Energy Laboratory]]. Retrieved 2010-01-04.</ref> They were the last, the largest, and the most advanced of the nine plants at SEGS, designed to take advantage of the [[economies of scale]]. Construction of the tenth plant in the same locality was halted because of the bankruptcy of Luz Industries. Construction of the approved eleventh and twelfth plants never started. Each of the three planned plants would have had 80 MW of installed capacity.<ref>{{Cite web |url=http://www.energy.ca.gov/siting/solar/index.html |title=California Energy Commission - Large Solar Energy Projects |access-date=2011-05-02 |archive-date=2008-05-11 |archive-url=https://web.archive.org/web/20080511185253/http://www.energy.ca.gov/siting/solar/index.html |url-status=dead }}</ref> [[Abengoa Solar]] recently constructed the 280MW [[Mojave Solar Project]] (MSP) adjacent to the SEGS VIII and SEGS IX plants.<ref>[http://www.abengoasolar.com/web/en/plantas_solares/plantas_para_terceros/estados_unidos/index.html Abengoa Solar - The Mojave Solar Project]</ref> The MSP also uses concentrating solar thermal trough technology.

Starting in February 2020, SEGS VIII no longer burned natural gas. The last production month was October 2021. SEGS IX stopped burning natural gas starting October 2020, except for January 2021.