Solar panels, or solar photovoltaic (PV) systems, convert sunlight into electricity that you can use to power your home. When installed on a suitable roof or structure, solar PV systems help reduce your electricity bills, cut carbon emissions, and increase your energy independence.
Under the PAS 2035 retrofit framework, solar panels are considered a renewable energy measure that must be designed and installed as part of a whole-house, fabric-first approach. This ensures that all energy upgrades work together effectively, safely, and cost-efficiently.
A typical solar PV system includes:
A PAS 2035 retrofit project will also consider the condition of the roof, shading, orientation, existing energy demand, and potential for load shifting with battery storage.
Under PAS 2035, solar PV must be:
Solar PV systems generate electricity directly from sunlight, reducing reliance on expensive grid electricity.
Solar energy is clean and renewable, helping to decarbonise your home.
Optional battery systems allow you to store unused electricity for use at night or during power cuts.
Improves the home’s Energy Performance Certificate (EPC) rating, making it more attractive to buyers or tenants.
Solar PV can be funded through ECO4, GBIS, or local government schemes, especially when installed with insulation or heating upgrades.
Homeowners can earn money for exporting surplus energy back to the grid through SEG payments.
The roof must be in good condition, structurally sound, and ideally south-, east-, or west-facing with little shading.
Systems with battery storage can be expensive without grant support.
Listed buildings or properties in conservation areas may need planning permission.
Solar production varies by season and location. Systems are still effective in the UK, but output is lower in winter.
Larger systems may need DNO (Distribution Network Operator) approval for grid export capacity.
Solar PV is suitable under PAS 2035 if:
When designed and delivered under the PAS 2035 framework, solar panels offer a safe, efficient, and future-ready way to power your home. Integrated into a whole-house retrofit plan, they work alongside insulation, ventilation, and heating upgrades to provide maximum comfort, energy savings, and carbon reduction.
With funding options widely available and expert coordination ensuring quality and performance, solar PV has become one of the most powerful tools in the UK’s transition to low-carbon homes.
