Code of practice for grid connected solar photovoltaic systems
The Code of Practice for Grid Connected Solar Photovoltaic Systems was published in 2014 by the Institution of Engineering and Technology (IET). It was written by IET Standards with expert technical input from the BRE National Solar Centre.
The IET is one of the world’s largest engineering institutions with nearly 160,000 members in 127 countries, covering; energy, transport, manufacturing, information and communications, and the built environment. The BRE National Solar Centre (NSC) was established in 2012 to provide independent evidence-based information about solar energy systems and related topics.
The Code of Practice (CoP) gives designers and installers of solar photovoltaic (PV) system the knowledge they need to ensure that their systems comply with UK and international standards and good practice. It is suitable for all scales of installation, from small domestic systems to large scale PV farms. As well as industry practitioners, the CoP will be of interest to customers, owners, investors, insurers and financiers of solar PV systems.
The CoP updates UK industry practice to ensure installation of grid-connected solar photovoltaic (PV) systems in the UK is safe, effective and fit-for-purpose. In the latest edition, system earthing, fault alarms, fusing, connectors and fire detection have been reviewed in detail, with key changes made to support good practice in the UK and to align with international standards.
- All parts of a grid-connected solar PV system up to and including the connection to the AC mains.
- Low voltage and high voltage connections and components.
- Building-mounted, building-integrated and ground-mounted systems.
- Grid-connected systems with battery storage.
Jonny Williams, Director of the BRE National Solar Centre said, “The Code of Practice raises the bar for quality in the UK solar PV industry… Its publication follows extensive industry consultation and peer review – receiving more than 400 comments – resulting in guidance that is both technically robust and readily useable by everyone involved. With the solar industry making an important and growing contribution to cost-effective low-carbon electricity provision in the UK, it is crucial that all systems are designed, installed and maintained to a high quality standard – the new CoP will be a valuable tool in achieving that goal.”
Martin Cotterell, BRE National Solar Centre Associate, and expert technical author for the CoP said, “The Code of Practice represents an evolution of existing technical standards. The scope is much broader, with a lot more technical details and a number of advances based on lessons learnt by the industry over the last five years of rapid solar PV development.”
[edit] Related articles on Designing Buildings Wiki
- Battery energy storage systems with grid-connected solar photovoltaics BR 514.
- BRE National Solar Centre.
- BRE photovoltaic certification scheme.
- DC isolators for photovoltaic systems (FB 68).
- Feed in tariff.
- Fuel cell.
- Future of electricity in domestic buildings.
- Green Deal.
- Installation of photovoltaic panels on existing flat roofs - some lessons learned IP 8 14.
- Large scale solar thermal energy.
- Microgeneration.
- Micro-grid.
- Photovoltaics.
- PV inverter.
- Solar thermal systems.
- VAT hike puts brakes on home solar and batteries.
- Zero carbon homes.
- Zero carbon non-domestic buildings.
Featured articles and news
The 2026 Compliance Landscape: Fire doors
Why 'Business as Usual' is a Liability.
Cutting construction carbon footprint by caring for soil
Is construction neglecting one of the planet’s most powerful carbon stores and one of our greatest natural climate allies.
ARCHITECTURE: How's it progressing?
Archiblogger posing questions of a historical and contextual nature.
The roofscape of Hampstead Garden Suburb
Residents, architects and roofers need to understand detailing.
Homes, landlords. tenants and the new housing standards
What will it all mean?
The Architectural Technology podcast: Where it's AT
Catch-up on the latest episodes.
Edmundson Apprentice of the Year award 2026
Entries now open for this Electrical Contractors' Association award.
Traditional blue-grey slate from one of the oldest and largest UK slate quarries down in Cornwall.
There are plenty of sources with the potential to be redeveloped.
Change of use legislation breaths new life into buildings
A run down on Class MA of the General Permitted Development Order.
Solar generation in the historic environment
Success requires understanding each site in detail.
Level 6 Design, Construction and Management BSc
CIOB launches first-ever degree programme to develop the next generation of construction leaders.
Open for business as of April, with its 2026 prospectus and new pipeline of housing schemes.
The operational value of workforce health
Keeping projects moving. Incorporating unplanned absence and the importance of health, in operations.
A carbon case for indigenous slate
UK slate can offer clear embodied carbon advantages.
Costs and insolvencies mount for SMEs, despite growth
Construction sector under insolvency and wage bill pressure in part linked to National Insurance, says report.





















