4 years with
Address
Grant Store Ltd Unit 20 Wigan Lancashire WN2 2PRContact
Licence number
1665700Licenced trades
About us
Grant Store Ltd (GSL) is a Trustmark-registered energy efficiency provider, specialising in renewable energy solutions across the UK. Since 2017, we have helped homeowners and social housing providers reduce energy costs and carbon footprints through high-quality, tailored installations. Our Services ( • ) Solar PV & Battery Storage – Harness solar energy for long-term savings. ( • ) Air Source Heat Pumps – Reduce heating costs with renewable technology. ( • ) Insulation & Heating – Improve efficiency with loft, solid wall, and room in roof insulation. With over 100 skilled professionals, we manage projects from consultation to installation, ensuring compliance and excellence at every stage.
Licenced trades
Where we work
Funding options
We specialise in:
Electricians
- Extractor Fans
- Faults
- Fitted Appliance Repair
- Fuse Box / Trip Board
- Garden Lighting
- General Electrical Work
- Inspection & Testing
- Lighting
- Security Lighting
- Smoke Detectors - Wired
- Switches / Sockets
- Thermostats
- Underfloor Heating
Heating Engineers
- Certification
- Electric Heating
- Inspection
- Installation - Gas Boiler
- Installation - Immersion
- Installation - Oil Boiler
- Installation -Air Conditioning
- Installation -Radiators
- Maintenance - Gas Boiler
- Maintenance - Oil Boiler
- Maintenance -Air Conditioning
- Replacement - Air Conditioning
- Replacement - Gas Boiler
- Replacement - Oil Boiler
- Replacement -Radiators
- Servicing
Plumbers
- Bath / Shower / Sink / Toilet
- Cylinders / Tanks / Pumps
- Dripping / Leaking Taps
- Leaks / Burst Pipes
- Radiator Installation
- Underfloor Heating (wet)
Solar Panel Installers (PV) [MCS]
- Installation - Photovoltaic (PV)
- Maintenance - Photovoltaic (PV)
- Replacement- Photovoltaic (PV)
Battery Storage Systems [MCS]
- Installation
- Maintenance
- Repairs
- Replacement
Internal Wall Insulation [B8 - 2019]
- Installation on a Solid Wall Construction
Loft Insulation [B9 - 2019]
- Installation
- Replacement
Flat Roof Insulation [B5 -2019]
- Installation
- Replacement
Room in Roof Insulation [B12 - 2019]
- Installation
Gas Fired Condensing Boilers [C1 - 2019]
- Installation
- Maintenance
- Replacement
Electric Storage Heaters [D1 - 2019]
- Installation
- Maintenance
- Replacement
Heating & Hot Water Controls [C5 - 2019]
- Installation- Compensation
- Installation- Heating Controls
- Installation- Hot Water Controls
- Installation- Smart Thermostats
- Installation- TRVs
- Installation- Time & Temperature Zone Controls
- Maintenance - Compensation
- Maintenance - Heating Controls
- Maintenance - Hot Water Controls
- Maintenance - Smart Thermostats
- Maintenance - Time & Temperature Zone Controls
- Replacement- Compensation
- Replacement- Time & Temperature Zone Controls
- Replacement- Heating Controls
- Replacement- Hot Water Controls
- Replacement- Smart Thermostats
- Replacement- TRVs
Air Source Heat Pump Installers [MCS]
- Installation
- Maintenance
- Replacement
Pitched Roof Insulation [B10 - 2019]
- Installation
Heating System Insulation [C4 - 2019]
- Installation
- Replacement
Hot Water Systems [C6 - 2019]
- Installation
- Maintenance
- Replacement
Energy Efficient Lighting [D2 - 2019]
- Installation
- Replacement
Room in Roof Insulation [B12 - 2023]
- Installation
Internal Wall Insulation [B8 - 2023]
- Installation on a Solid Wall Construction
Loft Insulation [B9 - 2023]
- Installation
- Replacement
Gas Fired Condensing Boilers [C1 - 2023]
- Installation
- Maintenance
- Replacement
Heating & Hot Water Controls [C5 - 2023]
- Installation- Compensation
- Installation- Heating Controls
- Installation- Hot Water Controls
- Installation- Smart Thermostats
- Installation- TRVs
- Installation- Time & Temperature Zone Controls
- Maintenance - Compensation
- Maintenance - Heating Controls
- Maintenance - Hot Water Controls
- Maintenance - Smart Thermostats
- Maintenance - Time & Temperature Zone Controls
- Replacement- Compensation
- Replacement- Time & Temperature Zone Controls
- Replacement- Heating Controls
- Replacement- Hot Water Controls
- Replacement- Smart Thermostats
- Replacement- TRVs
We specialise in:
Room in Roof Insulation [B12 - 2023]
- Installation
Internal Wall Insulation [B8 - 2023]
- Installation on a Solid Wall Construction
Loft Insulation [B9 - 2023]
- Installation
- Replacement
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