E-CO Energi
| Company type | Municipal owned | 
|---|---|
| Industry | Power | 
| Founded | 1892 | 
| Headquarters | Oslo, Norway | 
Area served  | Norway | 
Key people  | Tore Olaf Rimmereid (CEO) Erik Nygaard (Chairman)  | 
| Products | Electricity | 
| Revenue | NOK 4,076 million (2010) | 
| NOK 3,103 million (2010) | |
| NOK 1200 million (2010) | |
Number of employees  | 172 (2011) | 
| Parent | City of Oslo | 
| Website | www.e-co.no | 
E-CO Energi is a Norwegian power company and after Statkraft the second largest producer of electricity in Norway.