Our self quote tool assumes the following

Fixed price assumptions

Unfortunately, even though our pricing covers most homes, there are some rare items that we can't account for. Our self-quote tool assumes the following:

• 25-year system
• All cable runs are surface mounted and exclude trunking
• Up to 25m of cabling
• Maximum of 20-45 degree pitched roof
• Catenary wire if a face is detached
• Minimum of 4 panels per roof face
• Assumes single phase

Generation and estimated figures

The generation and estimated figures are based on a home with an irradiance of kWh/m²/yr and annual energy usage figure of kWh. Import rate p & Standing Charge p.
Your savings are calculated using an import rate of , a base import rate of , a low rate of for hours in day, providing an average import rate of , a base import rate of , a low rate of for a period of hours per day, a peak of for hours per day, providing an average import rate of , an export rate of , and a standing charge of .
Includes PV and Battery degradation. Inflation calculated at: Retail Energy %. Energy Cost %, source: ONS.*

How we calculate environmental savings

Environmental savings are based a 25-year system, using the following data:

• CO2 Savings – Based on an average of 4,680 kWh annual solar generation, this saves up to 1,090 kg of carbon a year (Source: UK Gov, 0.233 kg of CO2e per kWh of electricity).
• Equivalent Trees – A mature tree captures on average about 22 kilograms of CO2 per year (Source: One Tree Planted & European Environment Agency).