Energy Efficiency

LCoE 0.031 $ per kWh

Energy Efficiency

By providing heat from the Sun at much higher temperature, StorE CSP systems are characterized with higher efficiency compared to other CSP technologies available on the market. Higher efficiencies mean that for the same size of the solar field Store technology generates more electricity. In some cases, even 3 to 4 times more. This efficiency has a huge impact on capital expenses of the whole CSP plant and thus affects period for return of the investment. Other very important property of StorE CSP technology is that it can be built on site, with local resources. Because the technology utilizes air as a heat transfer fluid, there is no extra cost. Air is free and available on every location in the world. Other technologies usually use the thermal oil or molten salt as heat transfer fluids and even as storage media. Those fluids are not stable and can decompose or solidify if exposed to their upper or lower temperature of application which leads to frequent maintenance and costs. Molten salt and thermal oil are toxic and cannot be just disposed of into the environment but need  to be properly recycled.


Find answers to all your questions about our products, services, integrations, and other frequently asked questions.

How do Storenergy CSP plants produce electricity from the sun?

All CSP technologies work on the same thermodynamic principles. Heat from the sun is concentrated on to the receiver where heat transfer fluid collects the heat and transfers it to the thermal storage and heat engine. Heat engine is usually the steam turbine or ORC turbine which transforms the heat from the sun into usable work (electricity). By adding thermal storage Storenergy CSP can produce electricity even at night.

Land requirements are dependent on the solar resource available on the location and amount of thermal storage designed into the plant. In general terms this is 25.000 sqm per MW.

Storenergy solar concentrators are designed to be stand alone units that can operate independently so they can be used in industry for heat generation in a form of steam and hot air. Modular design of solar concentrators enables thermal power output from 70 kW to 1000 kW which is most often case in industry.

In industrial application Storenergy CSP systems are designed to make savings by reducing the consumption of fossil fuel. Usually it is designed to replace 50% of fossil fuel boiler capacity. If conditions on location are favorable, then even higher percentage of fossil fuel can be considered.

Storenergy CSP systems can be integrated with absorption cooling devices and thus provide the cooling load. By integrating thermal storage, operation of the absorption device can run more smoothly.

By using non-imaging concentrator with Fresnel design of mirrors in a circular form we can achieve desired concentration ratio. For power production we use concentrator with highest ratio and for heat for industry we accommodate design of mirrors and thus concentration ratio, to satisfy the needs of the user.

Storenergy CSP plant for electricity production uses air as a heat transfer fluid. We have decided to use air because of several reasons: free of charge and available on every location, can be heated up to very high temperatures (800 deg C), no need for periodic replacement, very compatible with Storenergy thermal storage.

Storenergy thermal storage is made of refractory so that it can withstand high temperatures > 800 deg C. Heat is stored as a sensible heat inside the storage. Storenergy thermal storage is pressure-less, non-corrosive, non-explosive, non-toxic, with simple regulation, long lifetime and 100% recyclable.

Storenergy CSP systems for heat for industry have expected lifetime of 20 – 25 years. Storenergy CSP systems for electricity production are designed to operate for 35 years.

We in Storenergy team have decided to have a robust and simple system that has: higher operating temperatures than other technologies, less components, simple and low-cost thermal storage, non-corrosive fluids and modular design of concentrators.