ESOS Compliance Solutions for UK Organisations
The Energy Savings Opportunity Scheme (ESOS) is a mandatory UK energy assessment requirement for qualifying organisations. While compliance is a legal obligation, many organisations struggle to move beyond audits due to capital constraints, delivery risk and lack of internal resource.
Carbon Numbers Investments provides ESOS compliance solutions that go beyond reporting — funding and delivering energy efficiency improvements through guaranteed, investment-led delivery.
What Is ESOS?
ESOS is a UK Government scheme requiring large organisations to undertake regular energy audits covering:
Compliance is required every four years and must be approved at board level. Failure to comply can result in financial penalties, reputational damage and increased regulatory scrutiny.
What Is ESOS?
ESOS is a UK Government scheme requiring large organisations to undertake regular energy audits covering:
Compliance is required every four years and must be approved at board level. Failure to comply can result in financial penalties, reputational damage and increased regulatory scrutiny.

Funded ESOS Delivery Through Carbon Numbers Investments
Carbon Numbers Investments transforms ESOS compliance into a funded delivery programme.
Through an investment-led Energy Performance Contract, we:

Benefits of an Investment-Led ESOS Solution
Who This Is For
Our ESOS compliance solutions are designed for organisations seeking:
How Our ESOS Compliance Model Works
Carbon Numbers Investments
ESOS Compliance FAQs
ESOS (Energy Savings Opportunity Scheme) compliance requires qualifying UK organisations to undertake a comprehensive energy assessment covering buildings, transport and industrial processes. Compliance must be completed every four years and approved at board level.
ESOS applies to large UK organisations that meet one or more of the following criteria:
- 250 or more employees
- Annual turnover above £44 million and balance sheet over £38 million
Group structures may also be required to comply.
Failure to comply can result in financial penalties, public naming by the regulator and increased scrutiny. Non-compliance can also expose organisations to reputational and governance risk.
No. While ESOS includes an energy audit, the scheme is intended to identify cost-effective energy efficiency opportunities. Many organisations fail to realise value because recommendations are not funded or delivered.
Yes. Carbon Numbers Investments provides funded ESOS delivery, enabling organisations to implement ESOS-aligned energy efficiency measures without upfront capital expenditure.
Approved energy efficiency measures are funded through an investment-led Energy Performance Contract. Savings generated by the project are used to repay the investment, with performance contractually guaranteed.
Yes. ESOS compliance must be signed off by a board-level director, making governance, audit readiness and defensible outcomes critical.
Traditional ESOS consultancy typically stops at reporting. Carbon Numbers Investments goes further by funding and delivering the identified measures, guaranteeing savings and transferring delivery risk away from the organisation.
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Why Carbon Numbers Investments?
What to Expect
Focused on financial, regulatory and operational considerations
How We Can Help
Funded energy and asset performance improvements

