A finished two-storey home with a dark solar roof

An installer on a ladder at the eaves measuring a roof slope

[01] Installations

Installations

Seven roofs across the Alder Valley, each with its system size and the estimated output and saving beside it.

[02] The case wall

Every roof, with the numbers beside it.

We list the system size first because it is the one number nobody can argue with. Output and saving are modelled estimates, and each case says what it used. Jump to a group:

Residential · With battery or EV charger · Commercial

Residential roofs

A brick terrace house in Marlow with a neat array of panels on the front roof slope

C1 · Marlow · 2024

6.4kW

≈ 8,000 kWh / yr est.≈ $1,600 / yr saved est.

A single-storey bungalow in Ashby with a small panel array

C3 · Ashby · 2023

4.8kW

≈ 6,000 kWh / yr est.≈ $1,200 / yr saved est.

A weathered coastal house in Pell Harbor with panels in pale haze

C5 · Pell Harbor · 2024

5.6kW

≈ 6,700 kWh / yr est.≈ $1,350 / yr saved est.

With a battery or an EV charger

A gabled house in Kenning with panels on the south slope and a battery cabinet in the garage

C2 · Kenning · 2025

8.8kW

≈ 11,000 kWh / yr est.≈ $2,150 / yr saved est.+ 13.5 kWh battery

Case →

A timber-clad home in Halden with panels on the roof and a car charging in the driveway

C4 · Halden · 2025

10.2kW

≈ 12,750 kWh / yr est.≈ $2,550 / yr saved est.+ EV charger

Commercial roofs

A low warehouse roof in Westbrook with long rows of ballasted panels

C6 · Westbrook · 2025

96kW

≈ 118,000 kWh / yr est.≈ $17,700 / yr saved est.

A small retail building in Ashby with tilted panels on a flat roof

C7 · Ashby · 2026

32kW

≈ 39,000 kWh / yr est.≈ $5,850 / yr saved est.

Estimates use the system’s modelled yield and a $0.20/kWh household rate ($0.15/kWh for commercial). Your bill depends on your tariff, usage and weather. We do not guarantee savings.

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