BIPV UK Legal Guide: Planning, Regs & Grid Rules

Overview

BIPV refers to photovoltaic technology that is built directly into the fabric of a building and performs a structural or weatherproofing function at the same time as generating electricity. That dual role is what separates BIPV from conventional solar PV, which is simply fixed on top of an existing roof or ground-mounted in a field.

Examples include solar roof tiles that replace standard tiles, glazed units that double as windows or atriums, cladding panels on a facade, and semi-transparent canopies over walkways or atriums. Because the product is part of the building envelope, it is assessed not just as an electrical generation system but as a construction product.

That means it has to satisfy structural, fire, thermal and weatherproofing requirements alongside the usual electrical safety rules. For owners, this creates an overlap between construction law, energy law and product liability that a straightforward rooftop solar project would rarely trigger.

Key steps

1. Check whether planning permission is needed. Some BIPV installations fall within permitted development rights, particularly on domestic properties, but commercial projects, listed buildings and properties in conservation areas almost always need a formal application. The Town and Country Planning Act 1990 and its associated orders set the framework, and your local planning authority will look at visual impact, heritage considerations and any effect on neighbouring properties.
2. Satisfy the Building Regulations. BIPV elements must comply with the Building Regulations 2010, covering areas such as structural stability, fire safety, energy efficiency under Part L, and electrical safety under Part P. Where the BIPV replaces glazing or roofing, thermal performance and weathertightness become central, and you may need calculations from a competent designer to demonstrate compliance.
3. Arrange the grid connection properly. If the system will export electricity, or even if it will only ever generate for on-site use, you need to engage with the local Distribution Network Operator under the framework of the Electricity Act 1989. The DNO will assess the size of the proposed system, the available capacity on the local network, and the technical specifications before granting consent. Connection costs can vary significantly.
4. Review contracts with suppliers and installers. BIPV products sit at the crossroads of construction and electrical installation, so your supply and installation contracts need to allocate risk carefully. Think about warranties on generation performance, defects liability for the building envelope, insurance, professional indemnity cover for the designer, and who takes responsibility if a product underperforms or fails structurally years into the building's life.
5. Plan for ongoing compliance and incentives. Once commissioned, BIPV systems may be eligible for export payments under the Smart Export Guarantee, and there are ongoing obligations around electrical inspection, maintenance records and, in commercial settings, energy performance reporting. Keep documentation from day one, including MCS certification where relevant, as it will be needed for export payments, for insurance claims, and for any future sale of the building.

Common questions