Hybrid Asset Solutions designed and proposed a 64.8 kWp rooftop solar PV system for a commercial site in Ellesmere Port. The system is engineered to offset 53% of the site’s annual electricity consumption, deliver £7,815 of first-year bill savings, and pay back in 7 years 8 months – generating £211,688 of net lifetime savings against the £71,944 capital cost.
Service Delivered
Site assessment and MCS-compliant performance modelling
- Design of a 64.8 kWp rooftop solar PV system (eight roof groups)
- Specification and supply of JA Solar 450 W bifacial modules, Solis 80 kW inverter, Renusol MS+P trapezoidal-sheet mounting, IMO DC isolators
- Full financial modelling – payback, lifetime savings, Smart Export Guarantee
- Turnkey installation proposal
Client’s Challenge / Requirement
- Annual electricity consumption of ~86,000 kWh, with a projected utility bill running at roughly £22,000 per year and rising at an assumed 7% per annum.
- Complex roof: a multi-pitched corrugated metal structure with eight separate panel groups at varying azimuths (55° to 239°) and shallow tilts. Notable shading – a 27.5% shading loss factor and a 0.725 shade factor.
- Need for a system that delivers material bill reduction, a sensible payback, and works around the constraints of the existing roof rather than requiring structural change.
Our Solution
- 64.8 kWp rooftop solar PV array – 144 × JA Solar JAM54D41-450/LB n-type bifacial double-glass modules.
- 1 × Solis S6-GC80K 80 kW three-phase inverter.
- Renusol MS+P mounting system on trapezoidal sheet metal (MCS012 certified, 10-year system warranty).
- 8 × IMO IP66 enclosed DC isolators for safe string disconnection.
- Eight-group panel layout designed around the existing roof geometry to maximise yield despite shading and orientation constraints.
- Modelled annual generation of 45,737 kWh, offsetting 53% of the site’s annual consumption.
- 25-year product warranty and 30-year linear performance warranty on the panels.
Outcomes / Success
Commercial outcomes
- Total system price: £71,944 (excl. VAT) – no deposit required
- Estimated annual electricity bill saving in year one: £7,815
- Lifetime utility bill savings (20-year horizon): £283,632
- Net lifetime savings after system cost: £211,688
- Payback period: 7 years, 8 months
- Self-sufficiency from grid: 29.5% PV-only
Environmental outcomes
- 12 tonnes of CO₂ avoided per year
- Equivalent to 2,226 trees planted over system lifetime
- Equivalent to 346,222 km of car travel or 248 long-haul flights avoided
Technical outcomes
- 53% of site electricity offset by solar generation
- 25,457 kWh of expected on-site self-consumption per year
- Smart Export Guarantee revenue from surplus generation at £0.07/kWh
