Energy Storage System Uses Isothermal Compressed Air
SustainX has completed construction and begun startup of a megawatt-scale isothermal compressed air energy storage (ICAES) system. The 1.5 MW ICAES system is located at SustainX headquarters in Seabrook, NH.
It takes electricity from the grid and uses it to drive a motor that compresses air and stores it isothermally, or at near-constant temperature. To do so, it captures the heat produced during compression, traps it in water, and stores the warmed air-water mixture in pipes. When electricity is needed back on the grid, the process reverses and the air expands, driving a generator. No fossil fuel is needed to reheat the air and no emissions are produced.
The system can be scaled in both power (megawatts) and energy (megawatt-hours) depending on the application and can be located where needed because it uses standard pipeline storage. The system has a 20-year operating life, and unlike chemical battery systems, ICAES performance does not degrade over its lifetime or need frequent replacement, according to SustainX.
The company says its ICAES technology is an improvement over conventional compressed air energy storage (CAES) systems – which have existed since the 1970s – because those CAES systems burn fossil fuel and are limited by the need for specific geological locations (i.e. caverns) for air storage.
SustainX says its ICAES is the first megawatt-scale compressed air energy storage system built anywhere since 1991, and represents an opportunity to expand the availability and use of this bulk energy storage method.
- Smart Companies Utilize Integrated Energy Solutions
- NAEM Trends Report: Planning for a Sustainable Future
- 2014 Environmental Leader Product and Project Awards
- The CFO and the Sustainability Reporting Chain
- Sustainability Careers: Unlocking Hidden Employment Potential
- The Business Case for Corporate Sustainability Tools
- Integrated Building Optimization
- Essential Guide to Lighting Retrofits and Upgrades
- Trends in Energy Management: Where Should Your Next Investment Be?
- Alarms Management: The Future is Now
- Energy Efficiency Requires Engineering Efficiency
- Integrated Building Optimization: A Crucial Convergence of Demand-side and Supply-Side Energy Management Strategies
- Driving Productivity and Profit with Industrial Energy Management
- Energy Procurement in 2014: Products & Programs to Optimize Savings
- BUYING STRATEGIES IN A VOLATILE MARKET: What Businesses Need to Know about Retail Electricity Procurement