Accreditations
What each accreditation means, what it lets us do on your site, and who checks it.
Why the accreditations matter
On a utility connection the accreditation is not a badge, it is the permission. Without GIRS a contractor cannot lay gas mains that join the public network. Without WIRS the water company will not adopt the main. Without NERS the distribution network will not connect the cable. Green Frog holds all three, audited by LRQA, alongside the safety, quality and supply chain accreditations that developers, main contractors and public bodies ask for at tender stage.
Network accreditations
GIRS, Gas Industry Registration Scheme
Audited by LRQA
Allows Green Frog to design and construct gas mains and services that become part of the public gas network.
See our gas connections page →
WIRS, Water Industry Registration Scheme
Audited by LRQA
Allows Green Frog to design and lay water mains and services as a self lay provider, adopted by the water company.
See our water connections page →
NERS, National Electricity Registration Scheme
Audited by LRQA
Allows Green Frog to design and build electrical connections as an independent connection provider, adopted by the distribution network.
See our electrical connections page →Metering accreditations
Green Frog Asset Management, our metering company, holds MAM (Meter Asset Manager) and AMI (Approved Meter Installer) accreditation and Cyber Essentials.
See our metering page →Quality, safety and supply chain
ISOQAR and UKAS
Management systems certified by ISOQAR under UKAS accreditation.
Constructionline Gold
Pre-qualified supplier status used by main contractors and public sector buyers.
Achilles UVDB Silver Plus
Utilities supply chain verification, including an on site audit.
SSIP
Safety Schemes in Procurement, health and safety assessed.
SafeContractor
Health and safety accreditation for contractors.
Gas Safe registered
Gas Safe registered.
IGEM
Member of the Institution of Gas Engineers and Managers.
Retail Energy Code
Approved under the Retail Energy Code.
Cyber Essentials
Government backed cyber security certification.
Frequently asked questions
Where we work
Green Frog Utilities delivers gas, water and electrical connections across England and Wales, from a single accredited contractor.