A guide for public sector bodies on criteria to include in specifications for procuring rooftop solar photovoltaic (PV) installations. It assumes that installations will be generating principally for on-site use with any excess sold to the grid under Smart Export Guarantees (SEG). Separate specifications will be required if the system is required to export to a third-party customer via a private wire.

If you’re working on decarbonising your estate, this guidance is a real time-saver. It gives you a ready-made, best-practice specification for rooftop solar PV – no need to start from scratch. It’s especially useful if you’re managing multiple sites or working with Salix or PSDS funding, as it aligns with their expectations.

The document also helps you avoid common pitfalls – like unclear contractor briefs or missed DNO steps – and ensures your installations are safe, efficient, and future-proofed. Whether you’re new to solar or scaling up, this is a solid foundation to build from.