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A giant solar plus storage facility

August 23, 2024 By EarthWise Leave a Comment

A massive solar and battery storage project is now operational

One of the country’s largest co-located solar and battery energy storage projects is now fully operational.  The Gemini Solar+Storage project is located in Clark County, Nevada, about 30 minutes outside of Las Vegas.

The project’s 1.8 million solar panels can generate up to 690 megawatts of electricity, which is enough to supply about 10% of Nevada’s peak demand.  The facility is co-located with 380 megawatts of 4-hour battery storage, which is enough to supply Nevadans with 1,400 MWh of power after sundown.

The project makes use of a unique storage configuration that allows the storage system to be charged directly from the solar panels, resulting in increased efficiency and maximizing the capture and storage of solar energy.

The project has minimized the environmental impacts to the nearly 5,000-acre site.  Primergy, the project developer, took measures to leave vegetation in place, installed solar panels to follow the ground’s natural contours, and reduced the overall footprint by more than 20% through careful design.  The project created 1,300 union and prevailing wage jobs and contributed $483 million to Nevada’s economy.

Solar facilities are increasingly co-located with battery storage plants.  There is a huge project in Kern County California that includes 1.9 million solar panels capable of generating 875 megawatts of solar power and storing 3,287 megawatt-hours of energy.  The deserts of the southwest are prime locations for such facilities.

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The house always wins: Massive Gemini solar + storage outside of Las Vegas reaches commercial operations

Photo courtesy of Quinbrook Infrastructure Partners.

Earth Wise is a production of WAMC Northeast Public Radio

Geological thermal energy storage

August 7, 2024 By EarthWise Leave a Comment

The electricity grid is increasingly using solar and wind power.  Depending on those two sources requires the ability to store energy to have on hand when the sun isn’t shining and the wind isn’t blowing.   Energy needs to be stored away to be used hours, days, or even weeks after it is produced.

Energy storage is booming.  California has increased its energy storage capacity tenfold in recent times.  One day in April, storage batteries were the largest source of electricity in the state for a period of two hours.  But batteries are not the only way to store energy.  There are chemical, electrochemical, mechanical, and thermal methods that each has potential advantages and unique features.

A project in Kern County, California, is making use of an abandoned oil field to create a long-term energy storage installation.  The plan is to retrofit depleted oil wells to store concentrated solar energy in superheated groundwater for long periods of time.  The stored heat can then be used to drive turbines when electricity is needed.

Some 1,200 feet below the surface of the oil field are pockets of permeable sandstone that have been emptied of the oil they previously contained.   An array of parabolic mirrors will gather solar energy that will heat silicon oil in an underground loop to 700 degrees Fahrenheit.  The oil pipeline will heat up groundwater down below.  When electricity is needed, the heated groundwater will be brought to the surface to operate turbines.

There is no new technology involved.  The individual aspects have never all been combined before, but the likelihood of success is high.  There are lots of depleted oil fields that could be used this way in the future.

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Can a California Oilfield Be Retrofitted to Store Solar Energy?

Photo, posted July 18, 2017, courtesy of John Ciccarelli / BLM via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

More Renewables On Campus

January 16, 2017 By EarthWise

https://earthwiseradio.org/wp-content/uploads/2016/12/EW-01-16-17-More-Renewables-on-Campus.mp3

We recently talked about the increasing efforts by colleges and universities to embrace sustainability with the use of renewable energy sources.  Those efforts are increasing in many places.

[Read more…] about More Renewables On Campus

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