Energy

Solar panels cover the roof of UCI's Student Center Parking Structure. A new study co-authored by Steven Davis, associate professor of Earth system science, shows that the U.S. can meet 80 percent of its electricity demand with renewable solar and wind resources.  Credit: Steve Zylius / UCI

CLICK HERE - STUDY - Geophysical constraints on the reliability of solar and wind power in the United States

Investment in greater storage, transmission capabilities needed

sciencedaily.com - University of California - Irvine - February 27, 2018

Summary: The United States could reliably meet about 80 percent of its electricity demand with solar and wind power generation, according to scientists.

The United States could reliably meet about 80 percent of its electricity demand with solar and wind power generation, according to scientists at the University of California, Irvine; the California Institute of Technology; and the Carnegie Institution for Science.

submitted by John Cooper

cleanegroup.org

Summary:

Researchers from NREL and Clean Energy Group found that placing a monetary value on the ability of solar+storage to avoid losses during grid outages can significantly impact project economics and system design. Using data from Southern California Edison, researchers analyzed the economic case for solar+storage for three customer types (school, office building, and hotel) in Anaheim, California. In each case analyzed, larger PV and battery storage systems were found to be economical when the value of resilience is accounted for.

CLICK HERE - Valuing the Resilience Provided by Solar and Battery Energy Storage Systems

                                                    CLICK ON THE IMAGE BELOW TO ENLARGE

http://fingfx.thomsonreuters.com/gfx/rngs/USA-PUERTORICO-POWER/010051M33MM/USA-PUERTORICO.jpg

The primary transmission lines that criss-cross Puerto Rico are steadily coming back online following Hurricane Maria, with several different contractors responsible for bringing back power.  The island lost all of its power after the storm; it still has a goal to restore 95 percent of power by the middle of December.

Sources: Puerto Rico Electric Power Authority; company reports

C Chan, S DiSavino 6/11/2017

ALSO SEE RELATED ARTICLE HERE - New Puerto Rico utility head, same old challenges

submitted by Jeff Williams

"Eólica" or wind power plant in Guanacaste, Costa Rica. ICE Group / Twitter

ecowatch.com - by Lorraine Chow - November 21, 2017

Costa Rica has charted another clean energy accolade. So far this year, the Central American country has run on 300 days of 100 percent power generation from renewable energy sources, according to the Costa Rican Institute of Electricity (ICE), which cited figures from the National Center for Energy Control. . . .

 . . . Costa Rica currently receives 99.62 percent of its electricity from five renewable sources, the highest proportion since 1987. This year, 78.26 percent of electricity came from hydropower, 10.29 percent from wind, 10.23 percent from geothermal energy and 0.84 percent from biomass and solar. 

Costa Rica has emerged as a global environmental leader, with its frequent 100 percent renewable energy streaks and its 2021 goal of becoming carbon neutral—a deadline set a decade ago.

(READ COMPLETE ARTICLE)