Avoid the stress of overpaying for a stock or missing an opportunity by using the right tools and insights to evaluate Tecogen Inc. before investing.

In this article, we go over a few key elements for understanding Tecogen Inc.’s stock price such as:

• Tecogen Inc.’s current stock price and volume
• Why Tecogen Inc.’s stock price changed recently
• Upgrades and downgrades for TGEN from analysts
• TGEN’s stock price momentum as measured by its relative strength

About Tecogen Inc. (TGEN)

Before we jump into Tecogen Inc.’s stock price, history, target price and what caused it to recently rise, let’s take a look at some background.

Tecogen Inc., together with its subsidiaries, designs, manufactures, markets, and maintains cogeneration products for multi-family residential, commercial, recreational, and industrial use in the United States. It operates in three segments: Products, Services, and Energy Production. The Products segment designs, manufactures, and sells industrial and commercial cogeneration systems to hospitals and nursing homes, schools and universities, health clubs and spas, hotels and motels, office and retail buildings, food and beverage processors, multi-unit residential buildings, laundries, ice rinks, swimming pools, factories, municipal buildings, indoor agriculture, military installations, and indoor growing facilities. Its Services segment provides operations and maintenance services for its products under long term service contracts. The Energy Production segment installs, operates, and maintains distributed own generation electricity systems and sells the energy generated by such systems in the form of electricity, heat, hot water, and cooling to its customers under long-term energy sales agreements. The company also offers natural gas-powered cogeneration systems for water and space heating, and/or air conditioning. Its product portfolio includes InVerde e+ and TecoPower cogeneration units for the supply electricity and hot water; Tecochill, an air-conditioning and refrigeration chiller, and hybrid-drive air-cooled and gas engine-driven chiller to produce chilled water and hot water; Tecofrost, a gas engine-driven refrigeration compressor to circulate refrigerant and provide hot water as a byproduct; and Ultera, an emissions control technology. It sells its products through in-house marketing, as well as independent sales agents and representatives. Tecogen Inc. was incorporated in 2000 and is headquartered in North Billerica, Massachusetts.

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Tecogen Inc.’s Stock Price as of Market Close

As of November 24, 2025, 10:19 AM, CST, Tecogen Inc.’s stock price was $6.960.

Tecogen Inc. is up 7.08% from its previous closing price of $6.500.

During the last market session, Tecogen Inc.’s stock traded between $6.500 and $7.080. Currently, there are approximately 28.82 million shares outstanding for Tecogen Inc..

Tecogen Inc.’s trailing earnings per share are negative, so the stock does not have a meaningful P/E ratio. We suggest investors evaluate other financial metrics to understand its overall valuation.

Tecogen Inc. Stock Price History

Tecogen Inc.’s (TGEN) price is currently down 30.26% so far this month.

During the month of November, Tecogen Inc.’s stock price has reached a high of $10.470 and a low of $5.970.

Over the last year, Tecogen Inc. has hit prices as high as $12.070 and as low as $0.875. Year to date, Tecogen Inc.’s stock is up 375.09%.

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What Caused Tecogen Inc. Stock’s Price to Rise?

Stock prices are primarily based on seller supply and buyer demand. But have you ever wondered about what other factors affect a stock's price?

When an analyst changes their opinion of a stock by upgrading or downgrading their rating, it often leads to a sudden stock price adjustment. As of November 21, 2025, there were analysts who downgraded Tecogen Inc.’s stock and analysts who upgraded over the last month.

Additionally, you'll want to evaluate Tecogen Inc.’s financial health and valuation. Investors can use AAII's Value Grade, which combines six key valuation metrics like P/E and P/S ratios for a comprehensive analysis to conduct analysis on Tecogen Inc.’s valuation and financial health. This approach mitigates the limitations of single-metric evaluations.

Tecogen Inc.’s current valuation based on AAII’s Value Grade is a F, which means it is considered to be Ultra Expensive.

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Lastly, news and media coverage as well as recent press reports about the company or its industry may cause stock prices to fluctuate. You can check out the most recent news articles about Tecogen Inc. (TGEN) by visiting AAII Stock Evaluator.

Relative Price Strength of Tecogen Inc.

Relative price strength measures a stock's performance against the market, helping investors identify stocks that are outperforming benchmarks.

For AAII’s Momentum Grade, a weighted relative price strength is calculated. Follow this link to learn more about the Momentum Grade.

As of November 21, 2025, Tecogen Inc. has a weighted four-quarter relative price strength of 57.37%, which translates to a Momentum Score of 98 and is considered to be Very Strong.

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Tecogen Inc. Stock Price: Bottom Line

As of November 24, 2025, Tecogen Inc.’s stock price is $6.960, which is up 7.08% from its previous closing price.

AAII advises against making stock decisions based solely on price or past returns. Instead, consider a variety of metrics, fundamentals, and analytics to evaluate a stock like Tecogen Inc. stock prices are influenced by market supply and demand and offer just a snapshot of a company's overall health.

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