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How it works

Distributed electricity where and when it is needed. With this focus, Azelio has developed a unique energy storage solution, TES.POD®, with thermal energy storage and highly efficient production of electricity and heat on demand using a Stirling engine. The system is highly suitable for being combined with photovoltaics because it is developed for storing energy for five to six hours and then generating electricity for the rest of the day. TES.POD® is a scalable solution for sustainable electricity around the clock at a low cost.

The system can be installed in sizes from 0.1 MW to 100 MW, with storage capacity for 13 hours of electricity production at nominal output – a system that can therefore supply, say, a hospital, factory or small community with renewable energy around the clock. It has a modular design, so it can be adapted to the needs of each customer and has components that require minimum maintenance.

tes pod

Groundbreaking energy storage

The actual storage unit consists of an aluminium alloy, which is largely produced from recycled aluminium. This utilises phase transformation, which at 600 degrees Celsius forces the alloy to change from solid to liquid form. The storage medium maintains its capacity without needing to be replenished, and there is no power degradation over time. This unique solution has a storage capacity of 13 hours of electricity production at nominal output, resulting in a system that can produce sustainable, dispatchable and distributed electricity cost-effectively around the clock.

Stirling engine converts heat to electricity

Stirling engines utilise heat differences to drive a generator and produce electricity. The engine is powered completely by heat and is emissions free. Azelio’s unique Stirling engine has been developed over 25 years and has accumulated more than two million operating hours. The engine converts heat to electricity at an efficiency of 29 percent and reaches an efficiency of a full 90 percent when the 55–65 degree Celsius heat generated by the system is also included. The system is competitive even when only the electricity is used, but the heat has many areas of use, such as in industrial processes, desalination of seawater and creating cooling. The high efficiency is a key to the system’s cost-effectiveness.

tes pod

Competitive advantages

Cost-effective technology. Combining the efficiency of the Stirling engine with the system’s storage of thermal energy gives Azelio a competitive offering for installations of up to 100 MW with a storage capacity of upwards of four hours, for delivery around the clock.

Scalable design. The modular design facilitates projects of various size, a standardised building process, quick installation, incremental expansion and multiple areas of use.

Well-suited to distributed electricity production. The system is robust and competitive even for small installations, from 0.1 MW up to 100 MW. It is therefore well suited to a variety of projects and works well in areas that lack a reliable grid where people are currently dependent on diesel generators.

High quality assembly plant for large-scale production of the Stirling engine. With established subcontractors and its own production plant built according to the latest manufacturing principles, the company can ensure high-quality series production at a low cost throughout the manufacturing chain, creating competitive advantages and the opportunity to secure rapid growth in production.

Global network of established partners. Azelio has developed a global network of leading players within renewable energy, including Masen and Masdar. This network contributes valuable knowledge about the renewable energy market, research and development, industrialisation, verification and business development. Collaboration is largely locally based, which provides Azelio with the potential to identify business opportunities and develop relationships with prospective customers, suppliers and public authorities.

About Azelio

Company overview and Azelio's business model

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The market

The market for renewable energy is growing rapidly

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