5 Best Green Energy Penny Stocks to Invest In

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1. Aemetis Inc (NASDAQ:AMTX)

Stock Price: $3.08

Number of Hedge Fund Holders: 8

Upside Potential: 656.17%

Aemetis Inc (NASDAQ:AMTX) is one of the best green energy penny stocks to invest in. Aemetis Inc (NASDAQ:AMTX) stock has more than doubled year-to-date, and Street forecasts show it could soar over 650% from here.

The company reported its Q1 2026 results on May 7. The report showed revenue increased 27% YoY to $54.6 million. The company generated a gross profit of $2.8 million, compared to a loss of $5.1 million in the same quarter of the prior year. Aemetis closed the quarter with $4.8 million in cash.

The quarter was supported by growth in the renewable natural gas (RNG) and biodiesel segments. Aemetis said its biodiesel sales increased to $10.5 million as it resumed shipments under new tender orders.

The company recorded $4 million in revenue tied to the Section 45Z tax credit program. This tax credit program is designed to boost domestic production of low-carbon transportation fuels. Aemetis said $1.4 million of the Section 45Z tax credit was earned through its renewable natural gas segment, while $2.6 million was earned through the ethanol production segment.

Looking ahead, Aemetis said it is pursuing a broad financing plan to address both near-term needs and fund continued growth across its platforms. Among the growth efforts is the expansion of the renewable natural gas production capacity. The company is also working toward the IPO of its Indian subsidiary, which produces biofuels.

California-based Aemetis Inc (NASDAQ:AMTX) produces renewable natural gas and biofuels. Its solutions help businesses lower energy costs and reduce emissions. It has a facility in California that converts dairy waste to renewable natural gas. It also produces ethanol at a California plant. In India, it has a biodiesel production facility, and the company is developing a sustainable aviation fuel plant in California.

While we acknowledge the potential of AMTX to grow, our conviction lies in the belief that some AI stocks hold greater promise for delivering higher returns and have limited downside risk. If you are looking for an AI stock that is more promising than AMTX and that has 100x upside potential, check out our report about the cheapest AI stock.

READ NEXT: 10 Most Undervalued Blockchain Stocks to Buy Now and 10 High-Growth Utility Stocks to Buy According to Analysts.

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