How do solar panels work? +
Solar panels work by converting sunlight into electricity. Most solar systems use photovoltaics (PV), which absorb sunlight to generate electric current. Larger installations may use Concentrating Solar-Thermal Power (CSP) systems, which use mirrors to concentrate sunlight into heat that is then converted to power. CSP is generally used for large-scale commercial or government projects.
How long will it take to install solar panels at my organisation? +
Installation timelines depend on the scale of the system. DNO approval can take up to 12 weeks, followed by site planning and safety assessments. Once approved, most public sector installations take between 2 to 6 weeks, depending on the number of buildings, roof types, and access requirements.
Can my organisation continue operating during installation? +
Yes. Solar panel installation causes minimal disruption. Installers are experienced in working with schools, hospitals, and councils, and can schedule any potentially disruptive works outside of operational hours—such as evenings, weekends, or school holidays—to ensure full continuity of service.
What is the lifespan of a public sector solar PV system? +
Commercial-grade solar panels typically last 25–30 years, with performance warranties of up to 25 years. Many systems remain operational for 35–40 years with periodic maintenance. Regular inspections and cleaning help sustain maximum efficiency and output.
Can we install solar panels on listed or council-owned buildings? +
Solar can be installed on heritage or council-owned sites, subject to planning consent. Experienced installers can manage listed-building applications, structural surveys, and roof-mount system designs that respect building aesthetics and meet conservation requirements.
How much do public sector solar panels cost? +
Costs vary depending on system size, roof structure, and energy use. As a general guide, commercial solar PV costs range between £700–£1,000 per kWp installed. A 50kW system could cost around £40,000–£50,000, while a 250kW system may reach £200,000–£250,000. However, government frameworks, PPAs, and Salix Finance options can significantly reduce upfront expenditure.
Are there funding or grant options available for councils and schools? +
Yes. UK public bodies can access funding via schemes such as Salix Finance, Public Sector Decarbonisation Scheme (PSDS), and regional net-zero grants. These can cover up to 100% of capital costs for solar and battery storage projects. Installers can assist with application documentation and project justification.
What maintenance is required after installation? +
Solar PV systems require minimal upkeep. Annual inspections, performance checks, and occasional panel cleaning are recommended to maintain efficiency. Many suppliers include long-term operation and maintenance (O&M) contracts to simplify management for public sector estates.
Will installing solar panels help with our carbon reduction targets? +
Absolutely. Solar PV reduces direct and indirect (Scope 2) emissions by generating clean electricity on-site. Public sector organisations can use this generation data to evidence progress against net-zero or SECR targets, while demonstrating leadership in local sustainability.
Can battery storage or EV charging be added later? +
Yes. Solar systems can be designed to integrate with future technologies such as battery storage and EV charging infrastructure. Many local authorities choose to phase their renewable rollout—starting with solar and adding storage or fleet charging later as demand grows.
Do public sector sites need planning permission for solar? +
Most rooftop solar installations qualify as Permitted Development, especially for schools and office buildings. However, planning permission is required for listed buildings, sites in conservation areas, or large ground-mounted systems. Installers can manage all necessary approvals on your behalf.
How does a Power Purchase Agreement (PPA) work for councils? +
A PPA allows councils, schools, or NHS trusts to host a solar system without upfront costs. A third-party investor funds the installation and sells the generated power to the organisation at a discounted rate, typically 20–40% cheaper than grid electricity. This guarantees savings and contributes to long-term carbon reduction goals.
What happens to surplus energy generated? +
Any unused energy can be exported back to the National Grid under the Smart Export Guarantee (SEG), generating additional income. Alternatively, with battery storage, surplus electricity can be stored for later use, improving self-consumption rates and resilience during peak demand.
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