Hampshire, Wiltshire, Isle of Wight, West Sussex & Surrey

Areas we cover

We are based at Clarence Wharf in Gosport and most of our work is within an hour of the yard. The six towns below are where we do the most, and each page covers the local housing, what fails most often there, and the council's position on grants. Further afield, we travel across Wiltshire, the Isle of Wight, West Sussex and Surrey for extraction and solar.

Gosport

Our home town — cavity walls, loft insulation and solar across the peninsula.

Mostly 1950s–1970s semi-detached and terraced housing with unfilled or failed cavity walls.

  • Cavity wall removal
  • Loft insulation
  • Solar panels
  • EV chargers
Gosport insulation & solar

Fareham

Detached and semi-detached homes, many with original cavity fill that has failed.

Mix of 1960s–1980s detached and semi-detached. Cavity wall issues common in older stock.

  • Cavity wall removal
  • Cavity wall installation
  • Loft insulation
  • Solar panels
Fareham insulation & solar

Portsmouth

Dense terraced housing and flats — loft and cavity work across the island.

High proportion of pre-1919 solid-wall terraces and post-war cavity-wall estates.

  • Cavity wall removal
  • Loft insulation
  • Solar panels
  • Battery storage
Portsmouth insulation & solar

Havant

Post-war estates and newer builds — insulation, solar and EV chargers.

Largely 1950s–1980s semi-detached estates. Many homes have unfilled or degraded cavity fill.

  • Cavity wall removal
  • Loft insulation
  • Solar panels
  • EV chargers
Havant insulation & solar

Southampton

City and suburban housing — extraction, installation and solar across SO postcodes.

Wide mix from Victorian terraces to 1980s new-builds. Cavity wall failure common in 1970s stock.

  • Cavity wall removal
  • Cavity wall installation
  • Loft insulation
  • Solar panels
Southampton insulation & solar

Winchester

Rural and market-town housing — insulation surveys and solar for older homes.

Mix of period properties and 1960s–1980s estates. Solid-wall and cavity-wall properties.

  • Cavity wall removal
  • Loft insulation
  • Solar panels
  • Battery storage
Winchester insulation & solar

Also covered

EastleighHedge EndTottonWaterloovilleEmsworthPetersfieldLee-on-the-SolentStubbingtonHayling IslandIsle of WightChichesterBognor RegisSelseyWorthingGuildfordWokingFarnhamSalisburyAndoverAmesburyTidworthLudgershall

Not on the list? Ring 0800 7022181; we probably still cover you.

Not sure if we cover your area?

Ring us on 0800 7022181. If we can reach you, we will tell you straight.

Extract Energy

Insulation, solar, battery storage and EV charging for homes across Hampshire, Wiltshire, the Isle of Wight, West Sussex and Surrey. Based in Gosport since 2013.

0800 7022181 sales@extractenergy.co.ukUnit 9 Clarence Wharf, Mumby Road, Gosport PO12 1AJMon–Fri 9am–5pm

Company

Accreditations

SchemeReference
TrustMark1948305
MCS (IAA)IAA10310
IAA installerFED10392
Kiwa579075
NAPITRegistered
ConstructionlineGold member
EA waste carrierCBDU532168

Extract Energy is a trading name of Extract Insulation Ltd, registered in England & Wales no. 09462745. Registered office: Unit 9 Clarence Wharf, Mumby Road, Gosport PO12 1AJ. VAT registration no. 213906329. Environment Agency registered waste carrier CBDU532168. TrustMark licence 1948305. MCS certificate IAA10310. NAPIT registered. © Extract Insulation Ltd 2026.

All installations are carried out by qualified, accredited engineers. Solar PV, battery storage and EV charger installations are subject to survey and technical assessment. Insulation measures are subject to property suitability checks. Prices and eligibility criteria are subject to change. VAT at 0% applies to the installation of qualifying energy-saving materials (insulation, solar panels and battery storage) until 31 March 2027, after which the rate reverts to 5%. Removal works, loft boarding and EV charger installation are subject to VAT at 20%. Nothing on this website constitutes financial advice. The Warm Homes Plan (grant and loan routes) is a government scheme; eligibility is determined by the relevant scheme administrator and is not guaranteed. Registering your interest does not constitute an application or a commitment by Extract Energy or the scheme administrator.

Extract Energy is not a financial services firm and does not provide regulated financial advice. Warm Homes Loan products are government-backed; independent financial advice is recommended before entering any credit agreement.