Warmer homes, lower energy bills

A heating engineer installs a heating system panel on a wall.

In a carbon neutral Portsmouth houses would be very well insulated, with energy-efficient appliances powered by renewable energy.

Portsmouth now

  • 235,000
    Tonnes of CO2e emitted by Portsmouth homes in 2019

    This is about 30% of our city’s overall carbon footprint. Most is from the gas used to heat our homes and water

  • 90,000
    The number of homes in Portsmouth
  • 9 859
    Number of Portsmouth homes in fuel poverty

    This leads to approximately 40 early deaths per year.

Portsmouth transformed

There are two main ways to green our housing sector:

New homes

All new homes need to be zero carbon from design to construction. This means utilizing sustainable building materials, insulation and on-site renewable energy and heat pumps. Read more

Existing homes

Our existing homes need to be retrofitted with better insulation, and gas central heating replaced by heat pumps and solar energy systems. Appliances also need to be updated to be energy efficient. Read more

What you can do

  1. Switch your electricity supplier

    to a 100% renewable tariff. If you choose the right supplier this can fund new solar and wind farms. Read this article for a heads-up on which companies do this.

  2. Get better insulation

    to make your house warmer and cut your energy bills / carbon footprint. If you are on certain benefits or a low income the government "ECO" scheme can offer grants for this.

  3. Upgrade your boiler

    to an energy-efficient one. Modern condensing boilers are around 90% efficient, compared to 55% for the oldest models – meaning a signficant reduction on your gas bill.

  4. Install solar panels

    to lower your bills / carbon footprint and earn money. Find out if your roof is suitable via the Switched On Solar website. (N.B. for household incomes less than £30k a year, the panels are free.)

  5. Change your heating system

    to solar or an air source heat pump, which can pay for itself in three years from savings on your bill and money back from the government.

  6. Local Authority scheme

    Tenants / homeowners whose household income is under £30 000 could be eligible for free solar panels, solid wall insulation or even a full retrofit including an air source heat pump, insulation and bigger radiators via the Local Authority Delivery scheme. The scheme is delivered by Switched on Portsmouth.

  7. Sign up to the UKGBC’s Net Zero commitment

    Up to 50% of the lifetime emissions of a building can occur at the construction stage. If you are a developer consider signing up to the Green Building Council’s Net Zero commitment.

  8. Engage with local development plans

    Influence new developments where you live: ask the developer about how they intend to reduce carbon emissions, contribute to local consultations and comment on planning applications.