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Micro-Cap Clean Energy Stocks

U.S. Exchanges

List of Micro-Cap Clean Energy Stocks Listed on U.S. Exchanges

This list includes clean energy companies with a market capitalization less than 300 million dollars. In the world of investing these are referred to as micro-cap stocks. We update this page at the start of every month so it is possible that during the course of a month a company’s market cap might go above 300 million. Additional clean energy companies can be found through the following links:

List of Clean Energy Companies

Mid-Cap Clean Energy

Small-Cap Clean Energy

In parentheses you will find a short description or areas of focus for the company. A comparison widget that shows trend, earnings per share (EPS), P/E ratio and beta for each of the companies on this list can be accessed through the link below.

Micro-Cap Clean Energy Industry Comparison Widget

Select the company’s link to access charts, news links and company website and social media information.


Aemetis, Inc. (AMTX) (Renewable fuels and bio-chemical products)

Gevo, Inc. (GEVO) (Bio-based alternatives to petroleum-based products)

Clean Energy Products and Services

Ameresco, Inc. (AMRC) (Projects that are designed to reduce the total energy consumption of its customers facilities)

Capstone Turbine Corporation (CPST) (Clean-and-green microturbine power generation systems)

MagneGas Corporation (MNGA) (Produces natural gas alternative MagneGas)

Westport Innovations Inc. (WPRT) (Natural gas engines)

Fuel Cells

Plug Power, Inc. (PLUG) (Hydrogen fuel cell technology)

Geothermal Power

U S Geothermal Inc. (HTM) (Geothermal power projects)

Hydroelectric Power

Ocean Power Technologies, Inc. (OPTT) (Ocean wave technologies)

Nuclear Power

Lightbridge Corporation (LTBR) (Consulting services; nuclear fuel technology)

Perma-Fix Environmental Services, Inc. (PESI) (Waste management services; environmental consulting)

Solar Companies

Amtech Systems, Inc. (ASYS) (Equipment used by semiconductor and solar industries)

DAQO New Energy Corp. (DQ) (China: manufactures polysilicon)

Ellomay Capital Ltd. (ELLO) (Israel: solar power plants)

Enphase Energy, Inc. (ENPH) (Technologies used by the solar industry)

JA Solar Holdings, Co., Ltd. (JASO) (China: semiconductor company)

Renesola Ltd. (SOL) (China: semiconductors, solar products)

Real Goods Solar, Inc. (RGSE) (Solar system installation)

Sky Solar Holdings, Ltd. (SKYS) (China: solar parks)

SPI Energy Co., Ltd. (SPI) (Photovoltaic products)

Sunworks, Inc. (SUNW) (Solar power systems)

VivoPower International PLC (VVPR) (Solar power company)

Yingli Green Energy Holding Company Limited (YGE) (China: semiconductors, solar products)

Wind Energy

American Superconductor Corporation (AMSC) (Wind turbines)

Broadwind Energy, Inc. (BWEN) (Wind industry products and services)

Sharing Economy International Inc. (SEII) (Precision forged components and fabricated and machined assemblies)

Related Links:

Stocks by Market Cap

Publicly Traded Companies by Sector and Industry

Micro-Cap Stocks