How big is the solar system installed at Bowland Pennine Mountain Rescue?
Alliant Energy installed a 18.48kWp solar PV system using 42 panels paired with a FoxESS inverter. The installation took 1 week from arrival on site to commissioning.
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Community & Charity
Bowland Pennine Mountain Rescue
18.48kWp system saving £1,159 a year for Bowland Pennine Mountain Rescue.
Project overview
Set in the Forest of Bowland, the Smelt Mill Mountain Rescue base operates in one of the UK’s most environmentally sensitive landscapes. Faced with rising energy costs and the need to modernise its facilities, the volunteer-led team partnered with Alliant Energy to deliver a solar and battery solution designed around its unique operational demands. The result is a site that now generates over 94% of its own energy, improving both financial resilience and environmental performance while supporting critical emergency response work. By reducing our energy costs, this system allows us to direct more of our funds towards our core charitable work. As an organisation committed to protecting the outdoors, it's important that we also play our part in reducing carbon emissions.
The challenge
Like most community & charity operations, Bowland Pennine Mountain Rescue faced a structural exposure to wholesale electricity prices — a cost line that doubled for many UK businesses between 2021 and 2023 and shows no sign of returning to pre-crisis levels. With significant daytime load and suitable roof space, on-site generation was the obvious lever, but the project needed to stand on its own commercial merits: predictable payback, manufacturer-backed warranties, and zero operational disruption during install.
The solution Alliant Energy designed
Following a structural roof survey and DNO capacity check, Alliant Energy specified a 18.48kWp array using 42 high-efficiency mono-PERC panels, paired with a FoxESS hybrid inverter. The FoxESS platform was chosen for its export-management capability and remote firmware updates, allowing the array to be tuned over its life without site visits. Surplus generation is exported to the grid under a Smart Export Guarantee tariff, providing a secondary revenue stream alongside the primary saving on imported electricity.
Install & commissioning
The full installation completed in 1 week, scheduled around the customer's operating hours to avoid downtime. Work was carried out by Alliant Energy's directly employed MCS-registered engineers — no subcontracted labour. The system was commissioned to G99 requirements, registered with the Microgeneration Certification Scheme, and handed over with monitoring access, electrical certification, and structural sign-off documents on the day of completion.
Financial outcome
In its first full year of operation the system is on track to save Bowland Pennine Mountain Rescue approximately £1,159 on electricity costs, with a payback term of 6 Years and a projected total ROI of 417%. Over the 25-year warranted life of the panels, the cumulative saving is forecast at £27,832 — a figure that improves materially if grid prices continue their long-term upward trend, and that benefits from the UK's 100% full-expensing capital allowance for qualifying solar assets.
Environmental impact
The installation displaces roughly — of CO₂ emissions every year compared with grid-sourced electricity. Over the system's 25-year design life that is the equivalent of removing more than Bowland Pennine Mountain Rescue's entire annual Scope 2 footprint several times over — a material data point for ESG, B-Corp and net-zero reporting frameworks.
Why it matters for the community & charity sector
Community & Charity businesses typically run daytime electrical loads — refrigeration, machinery, IT, lighting, compressors — that overlap closely with solar generation. That overlap is what drives strong economics: every unit generated and consumed on-site replaces a unit that would otherwise be bought from the grid at full commercial rates. The Bowland Pennine Mountain Rescue project demonstrates how the model scales for this kind of operation.
System
18.48kWp
Panels
42
Inverter
FoxESS
Install
1 Week
Project FAQ
How much does Bowland Pennine Mountain Rescue save each year?
Bowland Pennine Mountain Rescue saves approximately £1,159 per year on electricity, with projected lifetime savings of £27,832 over the system's 25-year guaranteed performance period. The payback term is 6 Years, delivering a total ROI of 417%.
Was the project funded or paid for upfront?
This project was paid for directly by the customer. Under the UK's full-expensing capital allowance, the entire cost can be deducted from corporation tax in year one — improving the effective payback meaningfully for profitable companies.
What's the environmental impact?
The system avoids around — of CO₂ emissions every year compared with grid-sourced electricity. Over a 25-year design life that's a material contribution toward Scope 2 reduction and any ESG or net-zero reporting commitments the business holds.
Could a similar system work for my business?
Probably — the same hardware platform (panels, hybrid inverter, optional battery) scales from roughly 10kW up to 1MW+. The deciding factors are roof area, daytime electricity use, current unit rate, and grid-connection capacity. Alliant Energy carries out a free desktop feasibility study and follow-up site survey before quoting.
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