Resource
20 May 2026
If you are responsible for property, finance, sustainability or operations, you may already be managing several overlapping schemes, including SECR, ESOS, MEES, EPCs, DECs, TM44 inspections and, for some importers, CBAM. Understanding which rules apply, when action is required and how each obligation connects can help you reduce risk and unlock energy savings. This guide summarises Zenergi’s A to Z of UK energy compliance in 2026 and how our regulatory compliance solutions can help you stay compliant, improve energy efficiency and make better-informed decisions.
What is regulatory compliance in the context of energy, carbon and estates management? It means understanding the legal, reporting and operational duties that apply to your organisation, then maintaining the right data, certificates, inspections, reports and improvement plans to demonstrate compliance.
For businesses, schools, public bodies, landlords and large organisations, compliance regulations can cover anything from annual carbon reporting to air conditioning inspections and building energy ratings. The challenge is that these requirements rarely sit neatly in one place. They may involve finance teams, facilities managers, sustainability leads, landlords, tenants and external assessors.
That is why many organisations are moving from reactive compliance to a planned, portfolio-wide approach. Zenergi’s Comply services are designed to help organisations fulfil regulatory obligations, safeguard future operations and identify opportunities to improve energy efficiency.
Energy compliance matters because the consequences of inaction can be financial, operational and reputational. But the opportunity is bigger than avoiding penalties.
A well-managed compliance programme can help you:
This is where regulatory compliance solutions can add value. Rather than treating each scheme in isolation, a joined-up approach can connect audits, certificates, building performance, carbon reporting and action planning.
The Carbon Border Adjustment Mechanism, or CBAM, is set to reshape international trade and emissions reduction. It introduces a carbon tax so carbon-intensive products imported into the EU bear a fair price for their embedded emissions.
Zenergi’s CBAM support helps organisations understand, comply with and adapt to the regulation by reviewing products, mapping production processes, identifying emissions sources and compiling associated documentation.
For organisations importing goods into the EU, CBAM is a reminder that compliance regulations are increasingly linked to supply chains, product data and embedded carbon. It also connects naturally to Scope 3 thinking, where emissions beyond direct operations become part of commercial and reporting risk.
Display Energy Certificates, or DECs, are applicable to public buildings and help to communicate energy performance transparently. Zenergi’s DEC service identifies opportunities to improve building energy efficiency while navigating compliance with ease.
For estates teams, DECs can support wider building compliance by turning operational energy data into visible performance information. They can also help prioritise sites for deeper review, audits or investment.
The Energy Savings Opportunity Scheme (ESOS), is a mandatory energy assessment scheme enforced by the Environment Agency. It requires qualifying organisations to report on energy usage every four years. For the current reporting period, Phase 4 – from 6 December 2023 to 5 December 2027 – organisations need to comply if they employ 250 or more staff, or if annual turnover exceeds £44 million and annual balance sheet total exceeds £38 million.
ESOS Phase 3 introduced additional requirements, including an action plan and annual progress updates, with the final update of Phase 3 required by 5 December 2026.
Energy Performance Certificates (EPCs), indicate the intrinsic energy performance potential of a building using an A to G rating, where A is very efficient and G is the least efficient. An EPC is required by law on construction, let or sale of a commercial building over 50m², and every EPC should be lodged on the Government Central Register.
To comply, organisations must calculate total energy consumption, identify areas of significant energy consumption, complete required audits for one year’s consumption under the direction of a lead assessor, submit notification of compliance to the Environment Agency and keep records in an evidence pack.
ESOS Phase 3 introduced additional requirements, including an action plan and annual progress updates. Zenergi notes progress update deadlines for the third compliance period of 5 December 2025 and 5 December 2026.
Zenergi’s ESOS service manages the process from data collection to reporting, with energy and carbon analysts calculating consumption, identifying areas for improvement and registered lead assessors supporting compliance.
EPCs are closely linked to Minimum Energy Efficiency Standards, (MEES). The standard aims to improve the energy efficiency of national building stock and regulations apply to all privately rented properties.
For landlords, developers, asset managers and managing agents, building compliance is a strategic issue. Poor ratings can restrict the ability to let successfully, affect value and create future investment risk.
Zenergi supports organisations with EPC assessments, modelling and improvement recommendations, helping to identify cost-effective measures that can improve asset ratings and support compliance.
Streamlined Energy and Carbon Reporting, (SECR), aims to promote energy efficiency and support the UK’s environmental commitments. Zenergi helps qualifying organisations collate, calculate and report energy consumption and carbon emissions for Scopes 1, 2 and 3.
SECR is mandatory for large companies meeting two or more of the following criteria: turnover of £36 million or more, balance sheet totals of £18 million or more, or 250 or more employees. Low energy users, defined as organisations using 40,000 kWh or less during the reporting period, are exempt from detailed energy and carbon disclosure.
SECR is more than an annual reporting task. Done well, it gives organisations a clearer view of energy consumption and emissions, supporting decisions that reduce costs and improve efficiency. It also complements ESOS and wider net zero work by improving the quality of energy and carbon data.
If your organisation qualifies for SECR, Zenergi can take care of data collation, calculations and reporting, while helping identify energy efficiency measures that reduce greenhouse gas emissions.
TM44 Air Conditioning Inspections are a legal requirement for building owners or managers controlling air conditioning systems with an effective rated output of 12kW or more. Inspections are required every five years and may apply where individual units are below 12kW but the combined output exceeds 12kW.
A TM44 inspection reviews the efficiency of the system, checks for faults and provides advice on how to make it more cost effective to run.
Zenergi’s service includes a full inspection by an accredited assessor and a report with findings and next-stage recommendations.
For organisations managing multiple buildings, TM44 is a useful part of building compliance because it connects legal obligations with practical opportunities to reduce electricity consumption, carbon emissions and maintenance costs.
A common mistake is to treat every compliance requirement as a standalone deadline. However, reusing data intelligently can streamline your compliance, bringing valuable cost and time savings.
SECR data can help strengthen carbon reporting and annual disclosures. ESOS audits can identify practical energy-saving measures. EPCs, MEES, DECs and TM44 inspections can reveal building-level opportunities. CBAM can bring product and supply chain emissions into focus.
This is where regulatory compliance solutions become commercially valuable. They help organisations move from fragmented evidence gathering to a more strategic view of compliance, risk and efficiency.
Compliance and net zero increasingly overlap. Zenergi’s “Getting to grips with Scope 3 emissions” white paper explains how Scope 3 emissions can make up a significant proportion of an organisation’s carbon footprint and often require input from partners, suppliers and customers across the value chain.
For organisations beginning to connect compliance data with wider decarbonisation plans, this is a useful next step. SECR, ESOS, CBAM and building performance data can all improve visibility of emissions and help prioritise action.
For broader strategic context, Zenergi’s “The evolving landscape of net zero” white paper explores why net zero remains high on the agenda and why organisations continue to need practical, informed plans.
Use this checklist to review your current position:
Navigating compliance can be complex. Fragmented data across multiple systems or spreadsheets, data errors, incorrect data entry, inconsistent conversions, and manual data handling can make it difficult to maintain reliable greenhouse gas emissions data. If this sounds familiar, Zenergi can help you simplify your energy and carbon compliance with expert-led services across SECR, ESOS, MEES, EPCs, DECs, TM44 and CBAM.
By partnering with us we’ll help you use compliance as a route to better data, improved efficiency, lower risk and clearer decision-making.
Whether you need to complete a mandatory report, certify a building, improve an asset rating, inspect air conditioning systems or understand emerging carbon obligations, our expert team can help you turn complexity into a managed plan.
