Long-Duration Energy Storage on a Grid Scale: Highview Power Storage LAES

Name of Project:
Long-Duration Energy Storage on a Grid Scale: Highview Power Storage LAES
Location:
Reading, England
Application:
Triad Management and Ancillary Services
Owner:
Highview Power Storage, a UK company headquartered in London, England
Developer/Operator:
Highview Power Storage
Suppliers:
Slough Heat and Power owned by SSE (Scottish and Southern Energy)
Funding:
Private, with £1.1M co-funded by the UK’s Department of Energy and Climate Change (DECC)
Date:
Commissioned July 26, 2011

Opportunity

Highview Power Storage has developed a novel large scale, long duration storage system, using liquid air as the energy storage medium. the system can also simultaneously convert low grade waste heat to electricity e.g. from a co-located industrial or utility plant. Conventional storage technologies include pumped hydro storage (which has a high capital cost and limited geographical opportunity) and batteries (which are limited in scale). Finding an affordable storage solution suitable for large utility-scale applications is a high priority for electricity markets worldwide. Highview’s technology offers such a solution. The technology uses no exotic/rare materials and produces no harmful emissions.

Approach

Highview’s system brings a new approach to energy storage that offers grid-scale solutions (10MW- 100MW+), at a lower capital cost than pumped hydro and at a scale and cost that batteries find hard to achieve.  The technologies at the heart of Highview’s system combine known components from the industrial gas and electricity generation industries assembled in a novel process. Along with providing a mature global supply chain, Highview expects this to provide a shorter product validation period and lower technology risk than most new technologies being introduced in the clean tech and energy storage space. The 300kW/2.5MWh pilot plant complies with all the regulations and inspections necessary to be allowed to connect the system to the UK grid.  It has successfully undergone a full testing regime, automated performance testing for the US PJM electricity market. It has in practical terms operating hours equivalent to three years of uK Short term operating reserve service; this winter the plant was operated for seasonal TRIAD management.

Results

The system is fully operational and delivering power back to the grid.  Highview is currently using the plant to test different operational modes, and demonstrate the technology and its process to OEMs, potential customers and government departments rather than for commercial use. Along with regular site visits by industry, academics and government advisers, the plant and the technology/cycle has seen a number of independent technological reviews (commercial and academic), concluding no significant issues in scaling up the technology and endorsing Highview’s findings within an acceptable range. Large scale plants are currently being designed for a number of services including: supporting intermittent renewables, providing shape to must-run plant, managing peak demand and also delivering security of supply and waste heat to power to large industrial users. After conducting technological due diligence, including examination of test data from the plant, the Messer Group and Basil Read Energy have signed commercial partnerships with Highview. For more information, please visit www.highview-power.com.