EPC & MEES for Warehouses in 2026: What Actually Changed

Updated July 2026.

The minimum EPC to let a commercial building in England and Wales is still band E. The widely-quoted “EPC C by 2027, B by 2030” trajectory was dropped on 18 June 2026; the government now intends EPC B for buildings over 1,000 m² from 2031, “where cost-effective” - and that is not yet law. On-site solar typically lifts a warehouse 1-3 EPC bands through the SBEM model, and it is usually the biggest single EPC uplift per pound spent. This guide sets out what actually applies in 2026, corrects the dead trajectory that competitors still cite, and explains the exemptions that specifically affect warehouses.

The short version: what is true in 2026

If you take one thing from this page, take this: the law today is band E, and the tighter targets you have read about have changed. Here is the current position, all of it verified against government sources as of July 2026.

• The Minimum Energy Efficiency Standard (MEES) makes it unlawful to grant a new lease, or continue an existing lease, on a commercial property with an EPC below band E in England and Wales. That has been the rule since 2018 and it has not changed.
• The “EPC C by 2027” milestone that appeared in the 2021 consultation was formally dropped on 18 June 2026.
• The “EPC B by 2030” ambition has been superseded. The government’s stated intention is now EPC B for commercial buildings over 1,000 m² from 2031, applied “where cost-effective” - but this is pending secondary legislation and is not yet enacted.
• Buildings under 1,000 m² have no set uplift beyond the current band E requirement.
• Solar counts in the EPC. It is modelled through SBEM and typically lifts a warehouse one to three bands (indicative, not guaranteed). A fresh EPC must be lodged after install to capture the improvement.

If a competitor’s website or a cold-calling installer is still telling you that you must hit EPC C by 2027, they are working from a plan that no longer exists. See the current non-domestic MEES guidance on gov.uk for the authoritative position.

Current law: band E is the line that matters

MEES applies to privately rented non-domestic property in England and Wales. Since 1 April 2018 it has been unlawful to grant a new tenancy on a property rated F or G. Since 1 April 2023 that prohibition extended to all continuing leases, not just new ones - so a landlord letting a sub-E warehouse on an existing lease is now in breach, not merely at renewal.

In practice this means:

• To let or continue letting a warehouse, it must be EPC band E or better (unless a valid exemption is registered - more on those below).
• The rule bites on the landlord, so it is primarily a lettability and asset-value issue. But it flows through to occupiers too: a tenant negotiating a lease renewal on a sub-standard unit can find the landlord unable to grant it lawfully until the building is improved.
• Owner-occupied warehouses that are not let are outside MEES while they remain owner-occupied - but the EPC still matters for sale, refinancing, and any future letting.

The band E floor is the settled law. Everything else on this page is about the direction of travel above it - and that direction changed materially in June 2026.

What changed on 18 June 2026 - and why the old dates are wrong

For several years the sector planned around a proposed tightening pathway first floated in a 2019-2021 consultation: an interim target of EPC C by 2027 and a headline target of EPC B by 2030 for commercial property. Vast amounts of competitor content, agent guidance, and installer sales decks were built on those two dates.

Those dates are now out of date. On 18 June 2026 the government confirmed it was not proceeding with the “EPC C by 2027” interim milestone, and the “B by 2030” headline has been replaced with a revised, later, and narrower proposal:

The intended target is now EPC B for commercial (non-domestic) buildings over 1,000 m², from 2031, applied “where cost-effective” - and it is pending legislation, not yet law.

Three things follow from that, and each one is a reason to be sceptical of any advice that still quotes 2027 or 2030:

1. The timeline moved out to 2031, not 2030. Nobody is required to hit band B in 2027 or 2030.
2. A size threshold was introduced. The tighter target applies only to buildings over 1,000 m². Smaller units are not caught by the proposed uplift.
3. It is not law. The 2031 target is a stated policy intention that requires secondary legislation to take effect. Until that legislation is made, the only enforceable standard is band E. Treating a pending target as an enacted obligation is exactly the error we see across the sector - do not build a capital plan on it as though it were settled.

This is a genuine accuracy win for operators: a lot of the market is still quoting the dead trajectory. The safe, correct planning position in 2026 is “band E is the law; a band B target for larger buildings is coming, probably 2031, probably cost-effectiveness-gated, but it is not yet on the statute book.”

The 1,000 m² threshold: does the proposed B target even apply to you?

Because the proposed 2031 target is scoped to buildings over 1,000 m², the first question for any warehouse operator is simply whether your unit crosses that line. Use this as a quick decision aid:

• Under 1,000 m² (about 10,760 sq ft): the proposed EPC B uplift does not apply to you as currently framed. Your obligation remains band E. Many small trade-counter units, self-storage blocks, and secondary industrial units sit here.
• Over 1,000 m²: you are in scope of the proposed 2031 EPC B target (subject to the legislation being made and the “where cost-effective” test). Most single-let big-box distribution units, 3PL sheds, and fulfilment centres are comfortably over this threshold. This is the population that should be planning for band B now, even though the deadline is not yet law.

Note the threshold is on building size, not tenancy or portfolio size. A large distribution shed is in scope even if a single tenant occupies it; a cluster of small units under a multi-let estate is assessed unit by unit against their individual EPCs.

If you operate at scale - a 3PL network or a fulfilment estate - the practical move is to map your portfolio by floor area now, flag every unit over 1,000 m², and check its current band. That tells you where the 2031 exposure actually sits before you commit any capital.

Two warehouse-specific exemptions worth knowing

Warehouses are unusual buildings for EPC purposes, and two features of the regime matter specifically to logistics stock.

The low-energy-demand exemption - some warehouses need no EPC at all

An EPC is only required for buildings that use energy to condition the indoor climate - heating, cooling, or mechanical ventilation. A genuinely low-energy-demand warehouse - one with no fixed heating, or only frost-protection / process heating rather than comfort heating - can fall outside the requirement to have an EPC at all. No EPC means MEES has nothing to bite on.

This catches a real slice of the sector: unheated ambient distribution sheds, cold shells, and pure storage buildings with only lighting and process loads. But the exemption is narrow and easy to lose:

• Fit comfort heating to office or welfare areas, add an air-conditioned mezzanine, or install mechanical ventilation, and the building may tip back into needing an EPC - at which point MEES applies in full.
• Refrigerated and temperature-controlled warehouses always need an EPC and are firmly inside MEES.

So the low-energy-demand exemption is genuine but conditional. If you are relying on it, confirm the building’s current heating and ventilation status before assuming you are outside the regime - a single office-block heating upgrade can change the answer.

The seven-year payback exemption - and no £3,500 cap for commercial

Where a warehouse does need to improve its EPC, MEES does not require improvements that fail a cost-effectiveness test. For commercial property, cost-effectiveness is judged on a seven-year payback: a landlord is not obliged to install a measure unless the expected energy savings pay back the cost within seven years.

One point here corrects a common cross-over error from the domestic rules. The £3,500 spending cap that applies to domestic MEES does not apply to commercial property. There is no fixed £-cap on non-domestic MEES; the test is purely the seven-year payback. If a measure pays back inside seven years, it is expected; if it does not, it can be registered as a valid exemption.

This is where solar becomes central to the compliance conversation, because rooftop PV on a well-matched warehouse often pays back in roughly 3-6 years - comfortably inside the seven-year window. A measure that both improves the EPC and passes the payback test is exactly the kind of improvement MEES expects a landlord to make. In other words, on many warehouses solar is not just permitted under the cost-effectiveness test - it is the measure the test points to.

Penalties: what non-compliance costs

MEES is enforced by local authorities, and the penalties for letting a sub-standard commercial building are set by property size and duration of breach. For non-domestic property they scale up to significant sums:

• Renting out a non-compliant property for less than three months can attract a penalty of up to 10% of the property’s rateable value, with a minimum of £5,000 and a maximum of £50,000.
• Renting it out for three months or more can attract up to 20% of rateable value, with a minimum of £10,000 and a maximum of £150,000.
• A publication penalty - the breach entered on a public register - applies on top.

For a large distribution warehouse with a high rateable value, these are material numbers, and the reputational element of a public breach entry matters to institutional landlords. The details and current figures are set out in the non-domestic MEES guidance - confirm the live thresholds before relying on any figure, as enforcement detail can be updated.

How solar lifts the SBEM rating

A commercial EPC is not measured like a domestic one. It is produced by the SBEM (Simplified Building Energy Model) calculation, which models the building’s regulated energy use and expresses the result as a Building Emission Rate. On-site generation reduces the modelled net energy the building draws, which improves the emission rate and, in turn, the EPC band.

For a warehouse this matters more than for most building types, because a warehouse typically has a large roof relative to its regulated load - so a solar array can offset a big proportion of the modelled consumption. In practice on-site solar typically lifts a warehouse one to three EPC bands. It is indicative, not guaranteed - the exact uplift depends on the building’s starting point, the array size relative to load, and how the assessor models it - but pound for pound, solar is usually the single biggest EPC improvement available on a large shed.

Two things are essential to actually capture that uplift:

1. The array has to be modelled into a fresh EPC. The improvement is not automatic. After the system is commissioned, you must commission a new EPC assessment that includes the on-site generation, and lodge it on the register. Until the new certificate is lodged, the building’s official band does not move - the panels are on the roof but the paperwork still shows the old rating.
2. Sizing still follows the load. The point of the array is real energy saving, not a paper trick. A well-matched array that offsets genuine daytime demand improves both the bill and the SBEM figure. For how we size to your actual load rather than filling the roof, see our companion guide on sizing warehouse solar from half-hourly data - the same right-sizing that protects your payback also produces a defensible EPC uplift.

So the sequence for a landlord or owner-occupier is: model the likely band uplift as part of the feasibility study, install the array, then lodge a new EPC to bank the improvement - turning a compliance cost into an asset-value and lettability gain under MEES.

What this means for warehouse operators and landlords

Pulling it together for 2026:

• The enforceable standard is band E. If your warehouse is let and rated below E, address it now - that is real, current law with real penalties.
• Ignore the dead 2027 / 2030 dates. They were dropped on 18 June 2026. Plan instead around a probable EPC B target for buildings over 1,000 m² from 2031, understanding it is not yet law and is cost-effectiveness-gated.
• Check your size and your heating. Under 1,000 m², the proposed B target does not apply. Genuinely unheated warehouses may need no EPC at all - but confirm before you rely on it.
• Use solar as the lead measure. With no £3,500 cap on commercial and a seven-year payback test, a well-sized rooftop array usually passes the cost-effectiveness test comfortably, lifts the band by one to three, and hedges rising network charges and grid prices at the same time. For indicative costs by system size, see our warehouse solar cost guide; for the tax and funding treatment (AIA, not full expensing; 20% reclaimable VAT, not 0%) see our grants and funding guide. For multi-let estates where the EPC play is central to lettability, see solar for multi-let industrial estates, and for the owner-occupier logic our ambient and general storage page walks through the operator case.
• Lodge a fresh EPC after install. No new certificate, no recorded uplift.

The bottom line: the compliance goalposts moved in June 2026, and a lot of the market has not caught up. The law is band E; the future target is band B for larger buildings from 2031, pending legislation; and solar remains the most cost-effective single measure for moving the needle on a warehouse EPC - improving the rating, protecting lettability, and cutting the bill in one investment.

Model the EPC uplift for your warehouse

We assess the likely SBEM band improvement as part of every warehouse feasibility study, size the array to your real daytime load so it passes the seven-year cost-effectiveness test, and set out the tax treatment and funding options - cash, asset finance, or PPA - side by side. We will also flag whether your unit is over the 1,000 m² threshold and what the 2031 direction of travel means for it.

Get your free warehouse solar and EPC assessment - a right-sized system that lifts your band and protects lettability under MEES.

Updated July 2026. All figures and dates in this guide are for general information only and reflect the position as at July 2026; MEES and EPC policy is subject to change and, for the proposed 2031 target, to legislation not yet made. Confirm your specific EPC, MEES exposure, and any exemption with a qualified assessor and your professional advisers before acting.