Companies / Industry directory / Utilities Cogeneration Services & Small Power Producers 1 stock in Utilities · SIC 4991. Company snapshot 2026-10-09 · Calculated market cap as of 2026-10-02 · USD Find a company or ticker Stocks in Cogeneration Services & Small Power Producers. Sorted by market cap, largest first. Ticker Company Market Cap Revenue (TTM) Net Income (TTM) AES AES CORP $10.64B $13.05BTTM ended 2026-06-30 $1.87BTTM ended 2026-06-30 No matching companies.