|Founded||December 29, 2008|
|Matthew L. Scullin (CEO and co-founder)|
Number of employees
Alphabet Energy is a startup company founded in 2009 at the University of California, Berkeley by thermoelectrics expert Matthew L. Scullin and Peidong Yang. The company uses nanotechnology and materials science applications to create thermoelectric generators that are more cost effective than previous bismuth telluride-based devices. The company is based in Hayward, California. It started with a license to use silicon nanowire developed at Lawrence Berkeley National Laboratory. They moved from UC Berkeley to offices in San Francisco in 2011, and later to Hayward.
Alphabet has a number of patents related to the capture of waste heat for purposes of electricity generation. The company is working with tetrahedrite, a common mineral with thermoelectric properties.
2011's The Lean Startup: How Today's Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses describes Alphabet Energy's approach to product development as an example of the successful practice of the book's principles. Author Eric Ries is on Alphabet's advisory board.
Alphabet has raised over $35 million in venture capital funding from Claremont Creek, TPG Capital, Encana and the California Clean Energy Fund. They were chosen as a 2014 World Economic Forum Technology Pioneer  and as a 2015 IHS CERAWeek Energy Innovation Pioneer.
In 2014, Alphabet Energy introduced the world’s first industrial-scale thermoelectric generator, the E1. The E1 takes exhaust heat from large industrial engines and turns it into electricity. The result is an engine that needs less fuel to deliver the same power. The E1 is optimized for engines up to 1,400 kW, and works on any engine or exhaust source, currently generating up to 25 kWe on a standard 1,000 kW engine. The E1's modules are interchangeable but currently come with a low-cost proprietary thermoelectric material and the device is rated for a 10-year life span. As advances in thermoelectric materials are made, new modules can be swapped in for old ones, to continually improve fuel efficiency to as much as 10%.
High temperature heat-to-electricity conversion
In 2017 Alphabet Energy, with a $2-million grant from the California Energy Commission (CEC), has been partnering with Berkley Lab "to create a cost-effective thermoelectric waste heat recovery system to reduce both energy use in the industrial sector and electricity-related carbon emissions."  The goal is a prototype with 10+ percent efficiency, operating temperatures beyond the 400 degree Celsius limit up to 800 degrees, possible remote electricity generation for areas off the grid, and "modularization for a broad scale of..applications" unique at various locations. 
- Berkeley Lab Energy Showcase Archived 2014-05-29 at the Wayback Machine
- Matt Scullin, Power Recycler - Businessweek
- Tapping into the Electric Power of Heat
- "Low Cost Thermoelectric Energy Harvesting for Efficient Power Generation", Department of Defense award information, United States Government Small Business Innovation Research website
- "Alphabet Energy Wants to Be the "Intel of Waste Heat Recovery"". Xconomy. 2014-07-22. Retrieved 2014-07-26.
- Jacobs, Suzanne (2014-07-15). "Cheaper Thermoelectric Materials | MIT Technology Review". Technologyreview.com. Retrieved 2014-07-26.
- Alphabet Energy's Waste-Heat Recovery Tech Is Out Of The Lab, Pilot Projects Underway | TechCrunch
- "Alphabet Energy, Inc. - Patent applications". Faqs.org. Retrieved 2014-07-26.
- "About Us". Alphabet Energy. Archived from the original on 2014-07-27. Retrieved 2014-07-26.
- "Canadian natural gas giant Encana backs Alphabet Energy — Tech News and Analysis". Gigaom.com. 2013-03-11. Retrieved 2014-07-26.
- "Technology Pioneers | World Economic Forum - Technology Pioneers". Weforum.org. 2013-06-29. Retrieved 2014-07-26.
- Chao, Julie (April 13, 2017). "New Berkeley Lab Project Turns Waste Heat to Electricity". Berkeley Lab. News Center. Retrieved May 31, 2017.
ab to work with Alphabet Energy to develop a low-cost thermoelectric system
- Company website
- Company video at YouTube (posted by company)
- E1 Thermoelectric Generator video at YouTube (posted by company)
- IHS Energy CERAWeek interview with CEO, Dr. Matthew L. Scullin video at YouTube (posted by company)
- PowerModule video at YouTube (posted by company)
- Fortune article: A startup is finally bringing heat-to-power tech in a big way for vehicles (posted by company)