L1 Energy
| Industry | Oil and gas | 
|---|---|
| Founded | 2015 | 
| Headquarters | , England | 
| Key people | Lord Browne, executive chairman | 
| Website | www.letterone.com/about-us | 
L1 Energy is an oil and gas investment company controlled by the Russian billionaire Mikhail Fridman, through Alfa Group, and chaired by Lord Browne.
On 2 March 2015, it was announced that Lord Browne was the executive chairman, and would be renouncing his other roles to build a major new oil and gas company from scratch.
L1 Energy will run DEA AG, the purchase of which was announced in March 2014 that DEA for €5.1 billion. L1 Energy will seek to build a global oil and gas company through the acquisition of platforms in Europe, North America and South East Asia.