TL;DR
- Homeowners access ECO4 if they live in fuel poverty or have an old heating system
- Landlords must meet MEES standard (EPC C by 2028) or face fines - ECO4 covers 100% of costs for eligible properties
- BUS grants cover up to 90% of heat pump installation costs for homeowners
- Commercial properties must complete ESOS energy audits - costs are tax-deductible
- Social housing providers receive separate council funding for upgrades
- Common mistakes: missing MEES deadlines, applying for wrong grants, not checking EPC grades
Who Pays for What
Energy efficiency upgrades in the UK involve multiple funding streams. This guide explains who covers costs for different property types based on 2026 government schemes.
Residential Homeowners: ECO4 and BUS Grants
ECO4 targets low-income households or properties with heating systems over 15 years old. It covers wall insulation, cavity wall insulation, and heat pumps. Homeowners do not pay upfront. Apply through an accredited installer. ECO4 eligibility checks include current EPC ratings and household income.
BUS grants fund heat pumps, solar panels, and battery storage. Homeowners get 70-90% funding. The Business Energy Efficiency Scheme covers heat pump installation costs entirely for households with an EPC rating below E. Requires an installer to apply on your behalf. Funding rates change annually.
"The biggest barrier to energy upgrades is not the technology - it is knowing which funding stream applies to your situation."
Landlords: MEES Compliance
The Minimum Energy Efficiency Standards (MEES) require all rentals to achieve EPC grade C or above by 2028. Landlords must pay for upgrades. ECO4 covers 100% of costs for properties in fuel poverty or with EPC ratings below E. ECO4 applications must be approved by the landlord, not the tenant.
Common errors include missing compliance deadlines, incorrectly assuming EPC ratings apply to all properties, or attempting to charge tenants for compliance costs. MEES has no fixed application process - it varies by installer and location.
Key MEES deadlines for landlords
- Now - All new tenancies must meet minimum EPC E
- 2028 - All rental properties must achieve EPC C or above
- Fines - Up to £30,000 per property for non-compliance
- Exemptions - Available where upgrade costs exceed the cap, but must be registered
Commercial Properties: ESOS
The Energy Savings Opportunity Scheme (ESOS) requires large businesses to conduct energy audits every four years. It covers all business sites. Compliance costs are tax-deductible. ESOS does not fund upgrades directly but identifies cost-saving opportunities.
ESOS is mandatory for companies exceeding energy use thresholds. Fines for non-compliance start at £5,000. Most businesses complete audits through external specialists rather than in-house teams.
Social Housing
Social housing providers apply for separate council grants to fund energy upgrades. Grants cover insulation, heating system replacements, and window upgrades. Applications focus on improving tenant health outcomes. Social housing upgrades typically happen in phases over multiple years.
Avoiding Common Mistakes
Landlords often apply for ECO4 after receiving tenant complaints about heat, missing the EPC grading deadline. ECO4 applications must happen before installation work begins. Homeowners applying for BUS grants face delays when installers lack accreditation for the scheme. Always verify installer credentials before booking.
Commercial firms skip ESOS until they face an audit notice. Missing the compliance deadline triggers automatic penalties. All properties require EPC ratings before grants or compliance processes begin.
Checklist before applying for any grant
- Get your EPC - You need a current EPC rating before any grant application
- Check eligibility - Each scheme has different income, property type, and EPC thresholds
- Use accredited installers - Unaccredited work will not qualify for funding
- Apply before work starts - Retrospective applications are almost always rejected
- Keep records - Invoices, certificates, and correspondence matter for compliance