GGI

GGI – Green Grant Installs is a UK-based whole-house retrofit specialist offering battery storage systems, solar PV systems, and a broad range of energy-efficiency solutions for domestic, commercial, and social housing clients across the United Kingdom.

Operating under the legal entity Green Grant Installs Ltd, GGI positions itself as an integrated retrofit provider, combining battery energy storage, renewable energy generation, and building fabric improvements under a single, coordinated service. This whole-house approach aims to deliver properties with greater energy independence, lower carbon footprints, and reduced energy bills for homeowners, businesses, and housing providers alike.

GGI holds accreditations with NAPIT and is a registered member of the Renewable Energy Consumer Code (RECC), placing the company within established UK frameworks for installer competence and consumer protection in the renewables and retrofit sector.

Company background

Green Grant Installs Ltd is a registered UK limited company, incorporated under company number 12732896. The company trades under the brand GGI – Green Grant Installs and operates primarily within the UK battery storage and retrofit market, with its services aligned to nationally recognised grant schemes and retrofit standards.

GGI describes itself as an award-winning whole-house retrofit specialist, reflecting an organisational focus on integrated energy upgrades rather than single-measure installations. The company has developed a structured service offering that spans battery storage, renewable energy, heating, insulation, and retrofit coordination, supported by formal processes including a complaints procedure and privacy policy in line with UK regulatory expectations for accredited installers.

Battery storage and retrofit services

GGI offers a comprehensive range of battery storage and energy-efficiency services, designed to address both energy storage and demand reduction within residential, commercial, and social housing properties. Key services include:

• Battery storage systems: Installation of advanced battery energy storage systems for homes and commercial properties, enabling clients to store excess renewable energy and maximise energy independence from the grid.
• Solar PV with battery integration: Combined solar panel and battery storage installations designed to help clients generate and store their own electricity efficiently.
• Air source heat pumps: Supply and installation of air source heat pump systems as part of an integrated retrofit plan, eligible for funding through the Boiler Upgrade Scheme (BUS Grant).
• Infrared and storage heating: Installation of modern infrared and electric storage heating systems, offered as part of a wider whole-house retrofit strategy to improve comfort and efficiency.
• Electric storage heaters: Specialist installation and upgrading of electric storage heater systems, designed to complement low-carbon generation or off-peak energy tariffs.
• Underfloor insulation: Building fabric improvements including underfloor insulation to reduce heat loss and enhance the performance of heating and generation technologies.
• Retrofit assessment and coordination: Structured assessments and project coordination aligned with PAS 2035, the UK standard for domestic retrofit, guiding clients through the full process from initial survey to completed installation.
• Commercial energy solutions: Energy-efficiency and low-carbon upgrades for business clients, supported where applicable by relevant incentive schemes.
• Council and social housing retrofit: Dedicated retrofit programmes for local authorities and housing associations, structured around the Warm Homes Plan and PAS 2035 guidance to improve energy performance across social housing stock.

Grants and funding support

GGI actively supports clients in navigating the range of UK government grant schemes and funding initiatives available for battery storage and retrofit installations. The company provides guidance on available funding programmes and PAS 2035-compliant retrofit assessments. This educational approach helps homeowners, social landlords, and commercial clients understand their eligibility and access funding to offset the cost of energy-efficiency improvements and battery storage systems.

By aligning its services with recognised grant frameworks and industry standards, GGI aims to make whole-house retrofit and battery storage solutions accessible and straightforward for a broad range of property owners and housing providers.

Accreditations and quality standards

GGI – Green Grant Installs holds the following accreditations and memberships, reflecting its commitment to quality, consumer protection, and compliance within the UK renewables and retrofit sector:

• NAPIT accreditation for renewable energy and retrofit installations
• Registered member of the Renewable Energy Consumer Code (RECC)
• PAS 2035 compliant retrofit assessment and coordination
• Support for government grant schemes and funding initiatives