High-efficiency Energy Storage Solutions
HOW RAPIDLY WILL THE GLOBAL Energy STORAGE MARKET GROW?
Global installed energy storage capacity is forecasted to expand 56% in the next five years to reach over 270 GW by 2026.
The main driver is the increasing need for system flexibility and storage around the world to fully utilise and integrate larger shares of variable renewable energy into power systems. Universal Kraft is working with partners to develop compressed air storage solutions. Developing a new technology in which a compressor is used to pump air into the ground or tank for storage, that is then reversed when the energy is needed, into a generator.
Global installed energy storage capacity is forecasted to expand 56% in the next five years to reach over 270 GW by 2026. The main driver is the increasing need for system flexibility and storage around the world to fully utilise and integrate larger shares of variable renewable energy into power systems.
As a first step, Universal Kraft together with GenSet Generators, and the support of the Swedish Energy Agency, will develop a small-scale circular system, via solar parking and compressed air energy storage, to generate a smart indoor cooling system. Contributing in the efforts towards carbon neutrality and sustainability goals of the Visby region.
The objective of this pilot project is to develop a small and modular system for solar power generation for COOP supermarket in Gotland, to power electric EV chargers and part of this energy will be used for compressed air energy storage. The stored energy is to be used later during off production hours. In parallel, the goal is to take advantage of the compressed air generator’s cold air exhaust to be used for interior cooling of the COOP store.
Energy can be stored as well compressed air on the ground, here Universal Kraft is also working together with CleanTech geomechanics through compressed air storage technologies, in which a motor-compressor is used to pump air into a tank, which is then reversed when the energy is needed, turning the motor into a generator, and the compressor into a turbine.
CleanTech Geomechanics has been working with Universal karft in the development and implementation of compressed air storage solutions for a number of years, and now also with a concept called Cased-Wellbore Compressed Air Storage (CWCAS) that could fill this gap in storage alternatives.
The CWCAS concept for renewable energy storage is an advanced, high-pressure, low-volume Compressed Air Energy Storage (CAES) process. The air is compressed with compressors powered by electricity (from the grid or off-grid systems) then stored in a high temperature, high-pressure cased-wellbore storage system which can be later expanded and generate electricity through a generator and delivered back to the grid.
Air Storage Solutions was created to develop projects that will combine renewable energy production, through wind or solar, with a energy storage system of compressed air.
The energy potential for a single well configuration can be up to 10MWh. Typically, 1 MWh is equivalent to the amount of electricity used by 300 houses, during one hour. With several CWCAS wells in array, a cyclic CAES operation can be employed: compressed air is injected into some wells, while energy from compressed air is produced from others. An array of wells allows for large energy storage output, and cost savings.
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