Orion Energy Systems (OESX) vs Tecogen (TGEN)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 10, 2026.
Summary
Orion Energy Systems (OESX) has outperformed Tecogen (TGEN) over the past year, gaining 223.3% versus a loss of 73.0%. Over five years, TGEN leads with a +37.4% price change compared with -38.1% for OESX. Orion Energy Systems is the larger company by market cap ($105.6 million vs $73.1 million), about 1.4 times the size.
On valuation, Orion Energy Systems trades at a lower forward P/E (13.2x vs 16.1x for Tecogen).
Summary generated from market data by MetaCap's automated system. Methodology
Relative performance
Percent change in share price from the first common trading day shown; excludes dividends.
Head-to-head
| Metric | OESX | TGEN |
|---|---|---|
| Share price | $25.83 | $2.42 |
| Market cap | $105.63M | $73.05M |
| 1-day change | -3.66% | -2.02% |
| YTD return | +67.95% | -51.01% |
| 1-year return | +223.28% | -72.96% |
| 5-year return | -38.06% | +37.42% |
| Forward P/E | 13.25 | 16.13 |
| EPS (TTM) | $-0.07 | $-0.35 |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| 52-week high | $31.65 | $12.07 |
| 52-week low | $7.99 | $1.94 |
| Distance from 52-week high | -18.39% | -79.95% |
| Analyst consensus | none | none |
| Avg. price target upside | +41.31% | +237.60% |
| Average volume | 82.56K | 192.75K |
| Shares outstanding | 4.09M | 30.19M |
| Employees | 174 | 119 |
| Sector | Consumer Discretionary | Industrials |
| Industry | Building Products | Industrial Machinery/Components |
Highlighted cells mark the higher value for growth, returns, margins and yield, and the lower value for P/E ratios. Highlighting is a mechanical comparison, not a recommendation.
Key differences
- OESX has outperformed TGEN by 296.2 percentage points over the past year.
- The two companies sit in different sectors: Orion Energy Systems in Consumer Discretionary and Tecogen in Industrials.
About Orion Energy Systems
OESX stock →Orion Energy Systems, Inc., together with its subsidiaries, research, designs, develops, manufactures, markets, sells, installs, and implements energy management systems for commercial office and retail, area lighting, industrial applications, and government in North America and Germany. It operates through three segments: Lighting, Maintenance, and Electric Vehicle (EV).
Consumer Discretionary · Building Products · 174 employees
About Tecogen
TGEN stock →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.
Industrials · Industrial Machinery/Components · 119 employees
OESX vs TGEN FAQ
Which is bigger, Orion Energy Systems or Tecogen?
Orion Energy Systems (OESX) is larger, with a market capitalization of $105.63M compared with $73.05M for Tecogen (TGEN).
Which stock has performed better over the past year, OESX or TGEN?
OESX returned +223.28% over the past 12 months, compared with -72.96% for TGEN (price return, excluding dividends). Past performance does not predict future results.
Are Orion Energy Systems and Tecogen in the same industry?
No. Orion Energy Systems is in the Consumer Discretionary sector, while Tecogen is in Industrials.