A family home in Northampton looking for maximum roof output with a competitively priced, well-matched battery system.

The roof comfortably carried 23 panels. The design focused on getting the panel-to-cost ratio right, keeping the payback period short while still delivering a full day-and-night storage solution.

The technical scope included:

• 23 × Aiko 475W all-black solar panels (10.93 kWp total capacity)
• SigenStor EC 10.0SP hybrid inverter
• 2 × SigenStor BAT 10.0 (18 kWh usable storage)
• Bird mesh fitted to all pitched-roof panels

Solar4Good designed a system built around value — strong output at a competitive price — from survey to commissioning.

Key aspects included:

• Maximised Roof Output – 23 all-black Aiko modules sized to the full usable roof.
• Sharp Panel-to-Cost Ratio – Specified to keep the payback period as short as possible.
• Full Day-and-Night Storage – Twin SigenStor batteries for round-the-clock self-supply.
• Safety & Compliance – Installed fully in line with UK building and electrical standards.

Over 10,000 kWh a year from the roof and an estimated 7–8 year payback — a strong example of a high-output system priced to perform.

Environmental impact:

• Average CO₂ savings: 2,110 kg/year
• Equivalent to planting 2,200 trees over the system’s lifetime
• Lifetime CO₂ offset: ~53,000 kg

Financial savings:

• Lifetime savings: ~£46,000
• Average savings: ~£1,860 per year
• ROI / Payback period: 7–8 years

Client benefits:

• High output at a competitive price
• One of the quickest paybacks in this set
• Significant contribution towards Net Zero
• Sleek all-black modules for kerb appeal