US Renewables Group

US Renewables Group, established in 2003, is a private equity firm headquartered in Santa Monica, California. It specializes in investing in the renewable energy sector, focusing on the United States, Mexico, and China. The company's strategy involves acquiring, developing, and managing renewable energy facilities, projects, and clean fuels initiatives. Its investment range typically falls between $30 to $70 million, depending on the project's stage. US Renewables Group engages in both early-stage developments and acquisitions of operational assets within the renewable power, biofuels, and clean technology sectors.

Edward May

Principal

9 past transactions

SolarReserve

Venture Round in 2011
SolarReserve, a venture-backed renewable energy company, focuses on advanced solar thermal storage technology. SolarReserve was formed to solve two of the fundamental barriers of renewable energy: scalability and storage. Unlike hydroelectric, geothermal, biomass, and other renewable energy technologies that use limited renewable fuel sources, SolarReserve's power plants draw their heat from the sun - earth's ultimate source of clean energy. And unlike wind and photovoltaics, SolarReserve's power plants can deliver power whenever it is needed, either 24 hours per day or only during "peak" demand. By overcoming these two key barriers, SolarReserve enables utility-scale, clean, renewable electricity generation.

OPX Biotechnologies

Series C in 2011
OPX Biotechnologies, Inc., based in Colorado, is a bioproducts company that employs its proprietary bioengineering platform, OPX EDGE, to convert renewable feedstocks into biofuels and green chemistry products. This technology enables the optimization of microbes and bioprocesses, aiming to deliver equivalent product performance with improved sustainability at lower costs compared to petroleum-based alternatives.

General Compression

Series B in 2011
General Compression is a developer of air energy storage systems that enables the storage of energy generated from wind farms for on-demand availability. The company's technology is designed to combine energy storage with wind energy, providing a competitive, emission-free firm generation capacity option. This solution aims to offer an alternative to new fossil and nuclear generation in markets traditionally reliant on these energy sources, without requiring subsidies.

General Compression

Series B in 2011
General Compression is a developer of air energy storage systems that enables the storage of energy generated from wind farms for on-demand availability. The company's technology is designed to combine energy storage with wind energy, providing a competitive, emission-free firm generation capacity option. This solution aims to offer an alternative to new fossil and nuclear generation in markets traditionally reliant on these energy sources, without requiring subsidies.

Fulcrum BioEnergy

Series C in 2011
Fulcrum BioEnergy is a company based in Pleasanton, California, founded in 2007 by E. James Macias and Jim McDermott. It specializes in converting municipal solid waste (MSW) into low-carbon transportation fuels such as jet fuel, diesel, and ethanol. The company uses a proprietary thermochemical process to transform sorted, post-recycled MSW into ethanol using conventional commercial systems and alcohol synthesis processes. Fulcrum BioEnergy designs, develops, owns, and operates facilities for this conversion and has a strategic partnership with Marubeni Corporation. Its mission is to create a clean, low-cost, and sustainable source of domestic transportation fuel, reducing dependence on imported oil.

General Compression

Series A in 2010
General Compression is a developer of air energy storage systems that enables the storage of energy generated from wind farms for on-demand availability. The company's technology is designed to combine energy storage with wind energy, providing a competitive, emission-free firm generation capacity option. This solution aims to offer an alternative to new fossil and nuclear generation in markets traditionally reliant on these energy sources, without requiring subsidies.

SolarReserve

Series B in 2008
SolarReserve, a venture-backed renewable energy company, focuses on advanced solar thermal storage technology. SolarReserve was formed to solve two of the fundamental barriers of renewable energy: scalability and storage. Unlike hydroelectric, geothermal, biomass, and other renewable energy technologies that use limited renewable fuel sources, SolarReserve's power plants draw their heat from the sun - earth's ultimate source of clean energy. And unlike wind and photovoltaics, SolarReserve's power plants can deliver power whenever it is needed, either 24 hours per day or only during "peak" demand. By overcoming these two key barriers, SolarReserve enables utility-scale, clean, renewable electricity generation.

Fulcrum BioEnergy

Series B in 2008
Fulcrum BioEnergy is a company based in Pleasanton, California, founded in 2007 by E. James Macias and Jim McDermott. It specializes in converting municipal solid waste (MSW) into low-carbon transportation fuels such as jet fuel, diesel, and ethanol. The company uses a proprietary thermochemical process to transform sorted, post-recycled MSW into ethanol using conventional commercial systems and alcohol synthesis processes. Fulcrum BioEnergy designs, develops, owns, and operates facilities for this conversion and has a strategic partnership with Marubeni Corporation. Its mission is to create a clean, low-cost, and sustainable source of domestic transportation fuel, reducing dependence on imported oil.

ThermaSource

Series B in 2008
ThermaSource is a company that specializes in geothermal drilling and consulting. It offers two primary services to the geothermal industry: engineering consulting and operation of drill rigs. The company owns eight drill rigs and operates a total of eleven rigs across the United States and the West Indies. ThermaSource provides mission-critical drilling services, including experienced crews, engineering and management expertise, exploration capabilities, and essential support services such as cement, drilling fluids, and logging to the rapidly growing geothermal power sector.
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