Does ESOS apply to my SME?

Only if you meet the large-business threshold; smaller firms can opt in voluntarily.

What saves the most for a small firm?

Lighting, standby loads and heating controls are usually the fastest wins.

Are there grants for business upgrades?

Regional and sector schemes exist; check with your local growth hub and the energy-efficiency companies in our directory.

Energy Efficiency for SMEs

Energy is a controllable cost. For small and medium businesses, simple measures often cut 10 to 20% off bills with little capital.

Last reviewed: August 2026Sources: ESOS (GOV.UK) · Energy Saving Trust · Carbon Trust

Quick no-cost wins

Turn off unused equipment, optimise heating setpoints and switch to LED lighting — fast payback across offices, shops and workshops.

Bigger capital measures

Smart meters, better insulation, variable-speed drives and heat recovery on process equipment deliver deeper savings.

Understand ESOS

Large businesses (250+ staff or £44m+ turnover) must comply with the Energy Savings Opportunity Scheme; SMEs below the threshold can still adopt the audit mindset voluntarily.

Get support and skills

Training such as Carbon Literacy and green skills courses helps staff embed efficiency; some grants and advice schemes exist regionally.

FAQs

Does ESOS apply to my SME?: Only if you meet the large-business threshold; smaller firms can opt in voluntarily.
What saves the most for a small firm?: Lighting, standby loads and heating controls are usually the fastest wins.
Are there grants for business upgrades?: Regional and sector schemes exist; check with your local growth hub and the energy-efficiency companies in our directory.