EPC Rules for Commercial Buildings Just Changed: What the June 2026 MEES Update Means for Your Business

If you own, lease, or manage commercial premises in England or Wales, the government has just moved the goalposts on energy efficiency compliance and it’s worth understanding exactly what changed before you plan your next capital spend.

What actually happened

On 18 June 2026, the Department for Energy Security and Net Zero (DESNZ) published its long-awaited interim response to the 2019 and 2021 consultations on Minimum Energy Efficiency Standards (MEES) for the non-domestic private rented sector. For years, businesses had been planning around a proposed staged tightening: EPC C by 2027, then EPC B by 2030. That roadmap has now been officially revised.

Here’s the new picture:

• The 2027 EPC C interim milestone has been scrapped. Landlords no longer need to hit an across-the-board C rating in April 2027.
• From 2031, buildings over 1,000 square metres will need to reach EPC B, subject to cost-effectiveness exemptions.
• The current law hasn’t gone anywhere. It’s still unlawful to grant or continue a commercial lease on an F or G-rated property without a registered exemption. 

The government estimates the revised approach could still save tenants in the largest rented buildings in the region of £360 million a year in energy costs by 2031.

 

Why this matters even though the deadline moved back

First, EPC B by 2031 is still a real, binding target for larger sites — and 2031 arrives faster than it sounds once you factor in the fact that most efficiency retrofits (chiller replacements, refrigeration upgrades, controls, building fabric work) require planning, procurement, and phased installation across an estate rather than a single site.

Second, energy costs aren’t waiting for the regulation. Whatever your EPC deadline, the operational case for reducing consumption is immediate — every kWh saved today is a kWh you’re not paying rising commercial energy prices for tomorrow, regardless of what a certificate says.

Third, EPC ratings and real-world energy performance aren’t the same thing, but they’re closely linked. The measures that move a building toward a better EPC band — efficient refrigeration and cooling, better electrical load management, improved air handling — are largely the same measures that cut your actual energy bill and your reported carbon footprint. Getting ahead of MEES compliance and getting ahead of your energy costs are, in practice, the same project.

Finally, multi-site operators in hospitality, food retail, and food production are disproportionately exposed. Many estates include a mix of building sizes, ages, and lease structures, meaning a portfolio-wide compliance strategy is far more complex than a single-site fix — and that complexity only grows the longer you wait to start.

What businesses should be doing now

• Get current EPCs reviewed across your estate, particularly for buildings above the 1,000m² threshold, so you know where you stand against the 2031 target today.
• Prioritise the sites where energy-inefficient plants are doing the most damage, oversized or poorly optimised HVAC and unmanaged electrical loads are typically the biggest, and most cost-effective, wins.
• Don’t wait for the final secondary legislation to start acting. Enforcement detail is still to come, but the direction of travel and the cost of energy in the meantime isn’t in question.
• Build a data baseline now. Understanding where and how energy is actually being used across your sites makes it far easier to prioritise spend, demonstrate progress, and respond quickly once the finalised MEES rules and penalty regime are confirmed.

How Emissis can help

This is exactly the space our enPact solutions are built for. Rather than treating MEES as a paperwork exercise, we help businesses close the gap between compliance and genuine energy performance:

• Cooling + Refrigeration — our technology reduces the energy consumption of existing refrigeration systems without replacing it outright, delivering measurable savings while you plan longer-term capital upgrades.
• Energy + Carbon Management — gives you the site-by-site visibility needed to identify your worst-performing buildings, prioritise investment, and build the evidence base for both EPC improvement and carbon reporting.
• FilterPro —cuts your electricity costs without replacing or disrupting any of your existing equipment. It targets the energy quietly lost to voltage fluctuation, load switching and electrical noise across your site, losses that inflate your consumption without ever appearing as a line on your bill. 

We already work across the sectors most exposed to this change, from national pubs and hospitality chains to food retail and food production sites across the UK helping them cut consumption ahead of both rising energy costs and tightening regulation. 

If MEES compliance is now on your radar for the estate, we can help you work out where to focus first.

Get in touch to talk through what the June 2026 MEES update means for your buildings, and how a targeted energy efficiency programme can put you ahead of both the deadline and the bill.