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Mainspring Energy, Inc.
Company typePrivate
IndustryElectric generator
Founded2010 (2010)
HeadquartersMenlo Park, California
Website

Mainspring Energy is an American manufacturer of novel electric generator systems. It produces a type of linear alternator which is made out of standard materials. It has only two moving parts (two pistons) and operates without the use of oil or complex engine mechanical systems, using air as its lubricant. The company has developed 78 patents for its novel linear generator technology. The company was established in 2010 under the name of EtaGen. It changed its name to Mainspring Energy in 2021, and is currently headquartered in Menlo Park, California.

Linear generator mechanics

Mainspring's linear generator uses a low-temperature, uniform reaction that maintains peak temperatures below the levels in which NOx forms (1500°C), resulting in near-zero NOx emissions. It utilizes two pistons in a horizontal configuration, with the two piston heads butted to each other. As combustive gas is introduced into the small volume between the two piston heads, the ensuing low-temperature explosion pushes the pistons apart, where they compress air at the opposite ends of the pistons, which compressed air acts as springs to push the two pistons back together again, repeating the cycle. It is very fuel flexible and can burn many different gasses, including methane, hydrogen, ammonia and propane. The generator continuously adjusts compression and expansion, allowing it to dynamically adjust for varying fuel quality and different types of fuels without stopping operation. The oscillation of the pistons is coupled to magnets moving through coils, which produce an alternating current. This current is then rectified and converted to standard 120 Volt alternating current. The patented innovations produce upwards of 46% energy conversion efficiency for the generator.

History

Mainspring was founded in 2010 by three Stanford University engineers seeking a new approach to generating clean, resilient, affordable electricity. In 2022 their CEO won the United States Department of Energy C3E Women in Clean Energy Award Their research into high-efficiency methods of converting fuel to electricity led to the founding of the company and the development and prototype of their first linear generator.

Their first commercial product reached the market in 2021, and they have since established a working track record of numerous successful operations on a commercial basis, with many units in operation in numerous locations. Mainspring Energy is building another linear generator manufacturing facility, in Allegheny County, Pennsylvania. This facility is scheduled to produce 1000 generators annually, upon completion.

References

  1. "Patents Assigned to Mainspring Energy, Inc. - Justia Patents Search". patents.justia.com.
  2. "Episode 533: What You Need To Know About Mainspring Energy's Low-Emission, Fuel Flexible Generator, with CEO, Shannon Miller". SunCast. October 20, 2022.
  3. "Shannon Miller".
  4. Flow, Cheddar (June 13, 2024). "Mainspring Energy: Transforming Clean Power". Cheddar Flow.
  5. "Mainspring CEO and Founder, Shannon Miller, wins the U.S. Department of Energy 2022 C3E Women in Clean Energy Award". www.princeville-capital.com.
  6. "Shannon Miller - CEO & Founder at Mainspring Energy". THE ORG.
  7. "Mainspring Energy Lands $150M Deal To Deploy Its Linear Generators With NextEra". www.greentechmedia.com.
  8. Lagiovane, Brian Hyslop, Daniel (October 28, 2024). "Mainspring Energy to Build New Manufacturing Plant Near PIT".{{cite web}}: CS1 maint: multiple names: authors list (link)

External links

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