Environmental, Social and Governance (ESG) considerations are becoming increasingly important for commercial property owners across the UK. Driven by rising energy costs, investor expectations, tenant requirements and evolving government policy, energy efficiency is now a key factor in protecting both asset value and occupier demand.

As energy consultants and brokers, we regularly speak to property owners who are unsure what EPC requirements apply to their buildings, what future legislation may mean and whether costly energy efficiency upgrades are actually necessary.

Understanding the relationship between ESG, Energy Performance Certificates (EPCs) and Minimum Energy Efficiency Standards (MEES) can help commercial property owners make informed decisions and avoid unnecessary expenditure.

Why ESG Matters for Commercial Property

While ESG covers environmental, social and governance issues, the environmental aspect is currently attracting the most attention within the commercial property sector.

Key areas include:

• Energy efficiency
• Carbon emissions
• Building performance
• Renewable energy generation
• Operational energy consumption
• Regulatory compliance

Commercial buildings account for a significant proportion of the UK’s carbon emissions through both construction and operation. As the UK continues its journey towards Net Zero, improving building performance remains a major focus for policymakers, investors and occupiers alike.

Strong ESG performance can deliver a number of benefits, including:

• Lower energy costs
• Improved tenant retention
• Higher property values
• Greater access to green finance
• Reduced regulatory risk
• Improved long-term resilience

For many businesses, energy performance is no longer simply a compliance issue – it is becoming a commercial advantage.

Understanding EPC Ratings

An Energy Performance Certificate (EPC) measures the energy efficiency of a building on a scale from A (most efficient) to G (least efficient).

Most commercial properties require an EPC when:

• A building is constructed
• A property is sold
• A new lease is granted

The EPC also provides recommendations for improving energy efficiency and reducing carbon emissions.

Many property owners assume that every commercial building requires an EPC and is subject to future EPC improvement requirements. However, that is not always the case.

Buildings That May Not Require an EPC

Certain commercial buildings may be exempt from EPC requirements altogether.

Examples can include:

• Listed buildings where energy efficiency improvements would unacceptably alter the building’s character or appearance
• Temporary buildings with a planned use of less than two years
• Places of worship
• Standalone buildings with a total useful floor area below 50m²
• Buildings scheduled for demolition where the relevant conditions are met
• Certain industrial and agricultural buildings with low energy demand

Before considering compliance obligations or improvement works, it is important to establish whether an EPC is actually required for the property in question.

Current MEES Requirements

Under the current Minimum Energy Efficiency Standards (MEES), most privately rented commercial properties in England and Wales must achieve a minimum EPC rating of E before they can be legally let, unless a valid exemption applies.

In June 2026, the Government confirmed its intention to strengthen these requirements through a more targeted approach. Current proposals suggest that privately rented commercial buildings larger than 1,000m² may need to achieve an EPC rating of B by 2031, where improvements are considered cost-effective. Buildings below 1,000m² would remain subject to the current EPC E minimum.

These proposals are not yet law and would require further legislation before taking effect. However, many landlords and investors are already assessing their portfolios to understand potential future exposure.

Poor energy performance can create several challenges, including:

• Higher future retrofit costs
• Reduced tenant demand
• Lower asset values
• Increased difficulty obtaining finance or refinancing
• Higher operational costs

Not Every Building Will Need Major Upgrades

One of the biggest misconceptions surrounding future EPC regulations is that every building will require extensive and expensive refurbishment works.

In reality, several exemptions and cost-effectiveness tests may apply.

The Seven-Year Payback Principle

Historically, government proposals have recognised that not all energy efficiency measures represent good value for money.

A commonly referenced principle is the “seven-year payback rule”, which considers whether the cost of an energy efficiency improvement can reasonably be recovered through energy savings within seven years.

For example:

• Upgrade cost: £100,000
• Annual energy saving: £5,000
• Payback period: 20 years

In this scenario, the measure may not be considered cost-effective.

While future regulations may evolve, the principle remains important because it recognises that landlords should not necessarily be expected to undertake improvements that deliver poor financial returns.

Other Common MEES Exemptions

All Relevant Improvements Made Exemption

If all cost-effective energy efficiency improvements have been completed but the building still fails to achieve the required EPC rating, an exemption may be available.

Third-Party Consent Exemption

Some improvements require consent from:

• Existing tenants
• Mortgage lenders
• Superior landlords
• Planning authorities

Where consent is refused, an exemption may be available.

Devaluation Exemption

If an independent surveyor confirms that proposed energy efficiency improvements would reduce the property’s market value by 5% or more, an exemption may apply.

Recently Acquired Property Exemption

In certain circumstances, landlords who have recently become responsible for a property may receive a temporary exemption period before compliance is required.

Because exemptions can be complex and are subject to specific criteria, landlords should seek professional advice before committing to significant capital expenditure.

ESG and Tenant Expectations

Sustainability is becoming increasingly important in occupier decision-making.

Many larger organisations now measure and report their greenhouse gas emissions as part of their ESG strategies. As a result, the energy performance of occupied buildings has become an important factor when selecting commercial premises.

Buildings with stronger EPC ratings can offer:

• Lower energy costs
• Reduced carbon emissions
• Improved occupant comfort
• Stronger sustainability credentials

As ESG reporting becomes more widespread, energy-efficient buildings are likely to become increasingly attractive to tenants.

Improving EPC Performance

Improving an EPC rating does not always require major refurbishment works.

Some of the most common improvement measures include:

• LED lighting upgrades
• HVAC optimisation
• Smart building controls
• Improved insulation and building fabric
• Solar PV installations
• Energy monitoring and management systems

In many cases, significant improvements can be achieved through relatively modest investments.

Why Energy Data Matters

While EPC ratings receive most of the attention, actual energy consumption data is becoming increasingly valuable.

By analysing half-hourly consumption data, energy invoices and site-specific usage patterns, businesses can often identify opportunities to improve performance without undertaking major building works.

This can help property owners:

• Reduce operating costs
• Improve ESG performance
• Support EPC improvement strategies
• Build stronger business cases for investment
• Prioritise projects with the quickest returns

For many buildings, operational improvements can deliver substantial benefits before capital-intensive upgrades are considered.

Why Acting Early Makes Sense

Even where future upgrades are not yet required, understanding a property’s position today can help owners:

• Spread investment costs over time
• Reduce disruption to tenants
• Protect asset values
• Minimise compliance risks
• Identify cost-effective improvement opportunities
• Improve long-term building performance

Taking a proactive approach provides greater flexibility as energy performance standards continue to evolve.

How Flame Energy Can Help

At Flame Energy, we help commercial property owners understand both their energy procurement and building performance.

Our team can review energy usage, analyse half-hourly consumption data, identify cost-effective efficiency opportunities and support long-term energy strategies that align with both ESG objectives and commercial goals.

Whether you manage a single property or a multi-site portfolio, understanding your energy position today can help you make better investment decisions tomorrow.

Final Thoughts

ESG and EPC requirements are reshaping the UK commercial property market, but future compliance does not automatically mean expensive refurbishment projects.

Many buildings may qualify for exemptions, fall outside EPC requirements altogether or only require improvements that can be justified through genuine energy savings.

By understanding your property’s current position, reviewing available exemptions and focusing on cost-effective energy improvements, it is possible to improve building performance, support ESG objectives and protect long-term asset value without unnecessary expenditure.