On-Site Generation Provider Says It Has Entered Into $150 Million Agreement With Parent Of Retail Supplier

March 9, 2021

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Reporting by Paul Ring • ring@energychoicematters.com

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Mainspring Energy, Inc., which offers an on-site power generation technology for commercial and industrial buildings, utilities, and microgrids, said that it has entered a $150 million agreement with NextEra Energy Resources to purchase Mainspring units and finance customer projects starting in the first half of 2021.

Mainspring said that the $150 million unit purchase and project finance agreement with NextEra Energy Resources will, "promote deployment of Mainspring's product and advance the adoption of renewable fuels such as biogas and hydrogen."

Mainspring has launched the Mainspring Linear Generator, a dispatchable power generator that has the capability to dynamically switch between fuels, including biogas and hydrogen, and has a footprint which is about the size of a parking space. Details on the Linear Generator are described further below.

"A major national supermarket chain, one of the Fortune 500 customers in Mainspring's pilot program, has signed an agreement to expand deployment of Mainspring Linear Generators to power up to 30 grocery stores. Mainspring began shipping pilot units to multiple Fortune 500 customers in June 2020 and expects to begin commercial product shipments in mid-2021. Mainspring has shipped products to big-box retail, grocery, and utility customers and is in talks with other Fortune 500 companies in shipping, logistics, telecommunications, and 100% biogas wastewater treatment facilities," Mainspring said

"Many commercial and industrial customers as well as utilities want clean, reliable power generation, with the capability to switch to 100% renewable fuels like biogas and hydrogen as they become available," said NextEra Energy Resources President and CEO John Ketchum was quoted as stating in a news release from Mainspring. "Mainspring is able to integrate clean onsite generation with both renewables and the grid and we're pleased to support bringing this innovative product to market."

Mainspring said that a linear generator -- distinct from an engine, microturbine, or fuel cell -- is a device that directly converts motion along a straight line into electricity using chemical or thermal energy.

"The design of Mainspring's Linear Generator uses a low-temperature reaction of air and fuel to drive magnets through copper coils to efficiently produce electricity. This innovcative [sic] design, combined with the company's proprietary adaptive control software, enables high efficiency, near-zero NOx emissions, full dispatchability, and seamless switching between fuels," Mainspring said

Mainspring's first commercial product is designed for a rated output of 250 kW and packaged in a standard 8' x 20' container. Each package integrates two of the company's 125 kW linear generator cores, working in tandem, and combines UL-listed grid-tie inverters and auxiliaries into what the company said is, "a turn-key package for fast and simple installation and quiet operation."

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