Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, what estimate he has made of the average increase in energy costs for small businesses since 2021.

The department publishes statistics on the price paid for electricity and gas by the non-domestic sector.

Industrial energy price statistics - GOV.UK

This includes tables 3.4.1 and 3.4.2 outlining the prices of fuels purchased by non-domestic consumers split by consumption size band.