MEES Regulations: Why Landlords Should Consider Solar

If you're a UK landlord, Minimum Energy Efficiency Standards (MEES) directly affect your ability to let your property. Solar panels are one of the most effective ways to improve your EPC rating and stay compliant — and potentially get ahead of upcoming tightening.

What Are MEES Regulations?

The Minimum Energy Efficiency Standards were introduced in England and Wales under the Energy Efficiency (Private Rented Property) Regulations 2015. They set a minimum EPC rating for rented properties:

• Since April 2018: All new tenancies must have a minimum EPC of E
• Since April 2020: All existing tenancies must have a minimum EPC of E
• Proposed (date TBC): Minimum EPC of C for new tenancies, with all tenancies following

The band C requirement has been announced, delayed, and re-announced multiple times. As of early 2026, the government's direction of travel is clear — band C is coming — but the exact timeline remains subject to political decisions.

Penalties for Non-Compliance

The penalties are significant:

Local authority trading standards enforce MEES. Enforcement has been inconsistent, but it's increasing as councils become more aware of their powers and as the political emphasis on housing energy efficiency grows.

How Solar Helps Landlords Meet MEES

Solar panels are particularly effective for MEES compliance because they improve the EPC regardless of the property's heating system. Even if the property has a gas boiler (which limits SAP score improvement from other measures), solar adds genuine points.

Scenario: D-Rated Property Needs to Reach C

A typical D-rated rental property (SAP score 58) needs to reach SAP 69 for band C — an improvement of 11 points.

A 3–4 kW solar system typically adds 8–15 SAP points. Combined with even basic insulation improvements (topping up loft insulation, draught-proofing), this is often enough to cross the C threshold.

Scenario: E-Rated Property Needs to Reach C

A property at SAP 45 (mid E) needs 24 points to reach C. Solar alone won't do it. You'll likely need:

• Loft insulation top-up: +10–15 points
• Solar PV (3–4 kW): +10–15 points
• Possibly cavity wall insulation or secondary glazing for the remainder

The Financial Case for Landlords

Beyond compliance, solar makes financial sense for landlords:

Tenant Attractiveness

Properties with solar panels (and the resulting lower electricity bills) are increasingly attractive to tenants. Lower running costs mean tenants can afford higher rents, or properties let faster, reducing void periods.

Green Buy-to-Let Mortgages

Several lenders offer preferential rates for buy-to-let mortgages on energy-efficient properties. On a £200,000 BTL mortgage, a 0.2% rate reduction saves around £400/year — a meaningful amount on a rental property's cash flow.

Property Value Protection

As MEES tightens, properties that already comply will be more valuable than those requiring investment. Getting ahead of the curve protects your asset value.

Tax Treatment

The cost of installing solar panels on a rental property is a capital expense, not a deductible revenue expense. However, the ongoing benefits (higher rental income, lower voids, green mortgage savings) flow through your revenue account.

The Cost Cap Exemption

Under current MEES rules, landlords don't have to spend more than £3,500 (including VAT) to improve a property's EPC. If you can demonstrate that no measures costing £3,500 or less would achieve the minimum rating, you can register an exemption.

However:

• The £3,500 cap is per property and is cumulative — if you spent £2,000 on insulation, you still have £1,500 of "obligation" remaining
• The cap is widely expected to increase significantly when band C requirements are introduced — possibly to £10,000 or even removed entirely
• Registering an exemption doesn't exempt you forever — it lasts 5 years and must be renewed

Relying on exemptions is a short-term strategy. The direction of travel is clear: rental properties will need to be energy efficient.

Solar Installation Considerations for Rental Properties

Who Pays?

As landlord, you pay for the installation. The tenant benefits from lower electricity bills (and possibly SEG income, depending on the arrangement). You benefit from compliance, property value, and mortgage benefits.

SEG Income

Who receives SEG export payments depends on the electricity account. Typically:

• If the tenant has the electricity account (usual), they apply for SEG
• Some landlords negotiate this as part of the tenancy, though this adds complexity
• In HMOs where the landlord pays the electricity bill, the landlord receives SEG income directly

Tenant Communication

You'll need your tenant's cooperation for the installation (access, scaffolding, etc.). Give proper notice and explain the benefits to them — lower electricity bills are a strong incentive for cooperation.

Installation Timing

The best time to install is during a void period between tenancies. If that's not possible, installations typically take 1–2 days and cause minimal disruption.

Grants and Funding for Landlords

Some funding is available specifically for landlords improving energy efficiency:

• ECO4: Landlords can access ECO funding for properties let to eligible tenants (those on certain benefits)
• Local authority grants: Some councils offer landlord-specific improvement grants
• Green Deal (residual): Though largely defunct, some Green Deal finance may still be available

Check our grants guide for current availability.

These cost-effective systems are popular with landlords upgrading rental properties:

JA Solar JAM54D41 450W N-type TOPCon

£82

watt peak

450

efficiency pct

22.8

dimensions mm

1722 x 1134 x 30

weight kg

21.5

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Solis RHI-5K-48ES-5G Hybrid Inverter 5kW

£950

rated power kw

5

max pv input kw

7.5

mppt channels

2

battery voltage v

48V

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Action Plan for Landlords

1. Check each property's current EPC — identify which properties are at risk
2. Prioritise properties rated D or below — these will need improvement first
3. Get solar quotes — compare at least 3 MCS-certified installers
4. Consider bundling improvements — insulation + solar together is more cost-effective than sequential visits
5. Apply for green BTL mortgage products — capture the financial benefit immediately
6. Update EPC certificates — after installation to prove compliance
7. Keep documentation — MCS certificates, EPC reports, and maintenance records

The cost of bringing a D-rated property to C with solar and insulation is typically £5,000–£10,000. Compare that with the penalty for non-compliance (up to £30,000) plus the inability to legally let the property, and the investment case is straightforward.

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