Connect with us

Hi, what are you looking for?

Swedish company Azelio has developed small-scale concentrated solar power systems that may be ideal for bringing electrical power to remote areas that have no access to a traditional electricity grid.

Clean Power

Small-Scale Concentrated Solar Power Could Benefit Remote Areas

Swedish company Azelio has developed small-scale concentrated solar power systems that may be ideal for bringing electrical power to remote areas that have no access to a traditional electricity grid.

Concentrated solar power, or CSP, is usually thought of as a way to create and store large amounts of solar energy to make electricity. In theory, it is no different than using a magnifying glass to burn your initials on a piece of wood. Concentrating the sun’s rays can create intense heat. That heat can be captured in any number of storage mediums. Water, molten salt, and molten silicon are three of the most commonly used.

Azelio concentrated solar power

What makes CSP technology so appealing is that is allows time-shifting of solar power. Heat water, or salt, or silicon during the day when the sun is shining brightly, then use that stored heat to create electricity later after the sun sets but demand for electricity is high. Typical CSP installations today are capable of creating massive amounts of electricity. In Dubai, a 700 megawatt system is under development. 100 megawatts is about the smallest size that is economically feasible, according to most experts.

Now Swedish company Azelio says it has developed new technology that could make concentrated solar power suitable for projects as small as 500 kilowatts or as large as 20 megawatts, according to a report in Renewable Energy Magazine. The company states the technology is able to generate clean electricity on demand, around-the clock, in a distributed way, and is more cost efficient than competing technologies.

stirling engine for concentrated solar powerThe key to the Azelio system is that is uses molten aluminum to store heat and a Stirling engine to generate electricity. Most CSP sytems use the stored heat to create steam, which is then used to power conventional turbines to generate electricity.

The Stirling engine was invented by Scottish minister Robert Stirling in 1816. It operates using heat from an external heat source and is more efficient than an internal combustion engine. Unlike a steam engine, the Stirling engine is a closed system in which a medium — usually air — is constantly heated and cooled without being exhausted to the surrounding atmosphere.

“Showcasing this technology is a great milestone for Azelio. We have now proven that this world-unique solution works and together with our partners we will continue the development and commercialization. Low cost and clean electricity that is made accessible on demand also in remote locations at all hours of the day is really a game changer,” said Jonas Eklind, CEO of Azelio.

We recently reported on new facilities from Fraunhofer that combine solar power installations with agricultural activities in a way that makes land use more efficient and productive. Such systems could be especially useful to remote communities that do not have access to traditional electrical grids. The Azelio system is another example of how to bring electrical power to those remote areas without the expense of building out traditional electrical grids, a process that is often prohibitively expensive.

Appreciate CleanTechnica’s originality and cleantech news coverage? Consider becoming a CleanTechnica Member, Supporter, Technician, or Ambassador — or a patron on Patreon.
Have a tip for CleanTechnica, want to advertise, or want to suggest a guest for our CleanTech Talk podcast? Contact us here.

Written By

Steve writes about the interface between technology and sustainability from his homes in Florida and Connecticut or anywhere else the Singularity may lead him. You can follow him on Twitter but not on any social media platforms run by evil overlords like Facebook.


You May Also Like

Clean Power

Bill Gates was going to save the planet with breakthrough nuclear technology, but his new concentrating solar power venture is breaking through first.

Clean Power

Researchers have developed new materials to use in ultra high temperature concentrating solar power systems. High temperatures mean more electricity from the same amount...

Clean Power

Pintail Power offers a new technology that combines solar power, conventional steam generators, and molten salt storage to take the duck curve.

Clean Power

In September, ACWA Power contracted with DEWA (Dubai Electricity and Water Authority) to build the world's largest concentrated solar power (CSP) plant at 700 MW...

Copyright © 2021 CleanTechnica. The content produced by this site is for entertainment purposes only. Opinions and comments published on this site may not be sanctioned by and do not necessarily represent the views of CleanTechnica, its owners, sponsors, affiliates, or subsidiaries.