High-Efficiency and Ultra-Low Emissions Linear Generator Demonstration Project in Southern California
High-efficiency, low-emissions linear generator for distributed generation applications using natural gas.
Mainspring Energy has successfully installed its linear generator at a Kroger Grocery Store in Colton, CA, and demonstrated 41.5% electric efficiency. The linear generator technology achieved ultra-low emissions and low operational and maintenance costs. Additionally, the linear generator demonstrated the ability to operate flexibly and provide reliable backup power. The successful demonstration attracted a $150 million agreement with NextEra Energy Resource to purchase linear generator units for 30 grocery stores.
Mainspring Energy (formerly EtaGen) is designing, building, and demonstrating an advanced linear generator with compelling economic, environmental, and operational attributes. The demonstration unit will be hosted by a major U.S. communications company. The Mainspring Energy technology, with high electric and high overall efficiencies in the CHP mode, will better fit the energy load characteristics of most commercial and light industrial applications. Intrinsic ultra-low air criteria pollutant emissions coupled with a high-efficiency drive and small greenhouse gas (GHG) footprint on natural gas make Mainspring's technology environmentally attractive. Capital cost and operating cost projections will be on the low side of the DG and CHP technology spectrum.
The linear generator technology combines high electrical efficiency (>45%) with low installed cost (<2,500/kW). In terms of efficiency, it is similar to CHP-capable fuel cell technologies while pricewise it will be similar to standard internal combustion engines.
Key Project Members
DE Solutions, Inc.
Montrose Air Quality Services, LLC