England, Scotland & Wales Ofgem / energy suppliers

Great British Insulation Scheme

Insulation grant available

Provides insulation grants for homes with a low energy-efficiency rating, funded through energy suppliers — helping households cut bills and carbon emissions.


What is the GBIS?

The Great British Insulation Scheme is administered by Ofgem / energy suppliers and available to eligible properties in England, Scotland & Wales. It is designed to help homeowners reduce the upfront cost of installing low-carbon energy systems and improvements — contributing to the UK's net-zero targets while lowering household energy bills.


Am I eligible?

  • Your home has an EPC rating of D or below (E, F or G homes get priority).
  • You live in council tax bands A–D in England, A–E in Scotland, or A–D in Wales.
  • Or your household is in receipt of a qualifying means-tested benefit.
  • The property must be your primary residence.

Not sure if you qualify? A free home assessment from one of our MCS-certified installers will confirm your eligibility and identify every grant you can access.


How it works

  1. 1

    Contact your energy supplier or a registered installer to check eligibility.

  2. 2

    An installer surveys your home and identifies the most cost-effective insulation measure (e.g. loft, cavity wall, or solid wall).

  3. 3

    One primary insulation measure is funded — installed at no cost to you if fully eligible, or at a reduced contribution otherwise.

  4. 4

    Works are independently inspected and must meet PAS 2035 standards.