Shell Energy Retail Limited, formerly First Utility, is a supplier of gas, electricity and broadband in the United Kingdom. In October 2013 the Coventry-based company was ranked as the seventh-largest supplier in the UK, making it the largest outside the Big Six. By September 2014 the company had a market share of 2% and in March 2019 it had 700,000 customers.

The company does not generate electricity, instead purchasing it from international markets. The company had a relationship with Shell, where it acted as an intermediary to purchase wholesale energy on the global market. Shell reached an agreement to purchase the company in December 2017, and completed the acquisition in February 2018. Rebranding to Shell Energy took place in March 2019 and the business now forms part of Shell’s New Energies division.