Solar energy storage

Storing sunlight in salts

Originally Published in Engineers Australia Magazine - Power Engineering Section Page 58 Using molten salt to store solar energy could provide electricity 24 hours a day, equivalent to baseload supply, according to Matthew Wright, executive director of Melbourne based company Beyond Zero Emissions.

"There are plants in Spain operating with energy storage right now, providing electricity all night long," Wright said.  Molten salt storage uses common salts, such as potassium nitrate, which are readily available and non-toxic.  Using the sun's energy, these salts are heated to high temperatures and stored in insulated storage tanks.   When electricity is needed, the heat in the molten salt is used to create steam to drive a turbine.

According to the company, this sort of electricity is dispatchable, meaning it can be sent out on demand at any time of day, so it can replace the baseload electricity generated from burning fossil fuels.

"Solar thermal power with storage is proven technology, which will reliably provide the backbone of modern renewable electricity grids," Wright said.

Beyond Zero talks to Dr Fred Morse of Abengoa Solar and CSP division SEIA

Dr Fred Morse is a veteran of the solar industry.  He started out in solar assessing the viability of the resource for Nixon, helped save the industry when a report by the NRC at the time was trying to close down the US Department of Energy Solar programs and he now is pushing forward with Abengoa's Solana plant and the industry in general as head of the CSP division Solar Energy Industries Association.  Dr Morse speaks to Matthew

Beyond Zero talks to Dr Fred Morse head of the CSP division Solar Energy Industries Association

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Rebecca Dunn from Australian National University talks about Solar Thermal

Rebecca Dunn a Researcher and PhD Candidate at Australia's leading Solar Thermal research institution the Australian National University talks about her experience in Solar, about the ANU's research program and about what is happening around the world.   This is Beyond Zero's Special Easter programming

Rebecca Dunn from ANU talks about Solar Thermal

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Scheffler Dish for cooking and power in developing countries

Invented by Wolfgang over 25 years ago 1000s of Scheffler dishes are now installed at 100s of locations around the world. Wolfgang Scheffler has made his dish designs and associated intellectual property available for free to create a solar world.


Originally Broadcast on the 5th of April, 2009


Visit Heike and Wolfgang at  Solar Brueke for more information.

Beyond Zero interviews Wolfgang Scheffler

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Greg Glatzmaier - solar thermal storage and heat transfer fluids

Greg Glatzmaier, National Renewable Energy Laboratory

Beyond Zero's Matthew Wright and Scott Bilby talk to Greg Glatzmaier, senior engineer at the USA's National Renewable Energy Laboratory about the latest storage and heat transfer fluid technologies for solar thermal power plants.

Greg Glatzmaier podcast

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Solar tower technology with storage provides baseload or dispatchable power

Kevin Smith, Solar Reserve

Beyond Zero's Matthew Wright and Scott Bilby talk to Kevin Smith, Chief Execute Officer at Solar Reserve about solar thermal tower plants where mirrors concentrate the sun's rays onto a central receiver. The heat that is created is stored as molten salt and used to generate electricity when demand is highest or throughout the night providing 'around the clock' power.

Kevin Smith podcast

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Beyond Zero interviews Doerte Laing on Solar Thermal with Concrete Thermal Storage at the German Aerospace Centre

Doerte Laing from the German Aerospace Centre DLR explains the advantages of Concrete Thermal Storage for Solar Power Plant operations upto 500 degrees C.  Laing says this technology is now ready for a full commercial scale demonstration.

Beyond Zero interviews Doerte Laing

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Solar power providing electricity 24 hours a day in summer

Beyond Zero’s Matthew Wright and Scott Bilby talk to Santiago Arias, Chief Infrastructure Officer of Torresol about a first-of-its-kind commercial 'Power Tower' that supplies electricity 24 hours a day.

Santiago Arias podcast

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Count Jacques de Lalaing on Solar Power Group's Linear Fresnel Solar Thermal

Beyond Zero Radio talks to Managing Director Solar Power Group, Count Jacques de Lalaing about Solar Power Group’s Linear Fresnel Solar Thermal technology including SPG’s achievement of steam at 450 degrees Celcius in a Linear Fresnel system – a world first

Jaques De Lalaing podcast

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Phase Change Salt Storage - Falling, falling... the cost of Solar Power Stations

Involvement with Solar Thermal electricity from the 1970s on. US$50 was the cost then, the reduction to $10 per watt came in the 80s. Then the goal was $2, and still is.
Anoop tells how his company Terrafore is using a US$1.8 million grant to pursue this target now!
Phase Change Solar Salt Storage will seriously change the economics of Solar Power at night or when clouds are over.

Beyond Zero interviews Anoop Mathur

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