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}, { "@type": "City", "name": "Wirral" } ], "knowsAbout": [ "Solar Panel Installation", "Commercial Solar PV", "Battery Storage Systems", "Air Source Heat Pumps", "EV Charging Installation", "Smart Export Guarantee", "MCS Certification", "Renewable Energy", "Energy Saving" ], "sameAs": [ "https://maps.google.com/?cid=12149377311066770099", "https://mcscertified.com/find-an-installer/", "https://www.trustmark.org.uk/find-a-tradesperson/" ] }, { "@type": "WebSite", "@id": "https://alliantenergy.co.uk/#website", "url": "https://alliantenergy.co.uk", "name": "Alliant Energy", "inLanguage": "en-GB", "publisher": { "@id": "https://alliantenergy.co.uk/#organization" } } ] }, { "@context": "https://schema.org", "@type": "Article", "headline": "The Mendip School — 30.03kWp Solar Case Study", "description": "The Mendip School (Education): 30.03kWp solar array, 68 panels — £7,768/yr saved, 2.6 Years payback. Full project breakdown by Alliant Energy.", "image": "/__l5e/assets-v1/771a3ab3-0fbf-49ba-ae5b-ce4b18d02a8f/the-mendip-school.jpg", "author": { "@type": "Organization", "name": "Alliant Energy" }, "publisher": { "@type": "Organization", "name": "Alliant Energy", "url": "https://alliantenergy.co.uk", "logo": { "@type": "ImageObject", "url": "https://alliantenergy.co.uk/favicon.ico" } }, "datePublished": "2026-01-15", "dateModified": "2026-05-19", "mainEntityOfPage": "https://alliantenergy.co.uk/case-study/the-mendip-school", "about": "Education" }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "How big is the solar system installed at The Mendip School?", "acceptedAnswer": { "@type": "Answer", "text": "Alliant Energy installed a 30.03kWp solar PV system using 68 panels paired with a Solis inverter. The installation took 1 week from arrival on site to commissioning." } }, { "@type": "Question", "name": "How much does The Mendip School save each year?", "acceptedAnswer": { "@type": "Answer", "text": "The Mendip School saves approximately £7,768 per year on electricity, with projected lifetime savings of £161,380 over the system's 25-year guaranteed performance period. The payback term is 2.6 Years, delivering a total ROI of 962%." } }, { "@type": "Question", "name": "Was the project funded or paid for upfront?", "acceptedAnswer": { "@type": "Answer", "text": "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." } }, { "@type": "Question", "name": "What's the environmental impact?", "acceptedAnswer": { "@type": "Answer", "text": "The system avoids around 5.8 Tonnes 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." } }, { "@type": "Question", "name": "Could a similar system work for my business?", "acceptedAnswer": { "@type": "Answer", "text": "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." } } ] } ] --- [![Alliant Energy — Renewable Energy Solutions](/__l5e/assets-v1/3bd22195-cc6e-43e6-b5ff-5a808ce292d3/alliantenergyltd-2.svg)](/) [Home](/)[About](/about-us) [Services](/services) [Guides](/guides)[Case Studies](/case-study)[![Levelise](/__l5e/assets-v1/59fd362e-361a-47d7-ad1f-65e9beeb5289/levelise-logo.webp)](/guides/levelise-hub-explained) [01282 501589](tel:01282501589)[Get a Quote →](/quote) ![The Mendip School solar installation](/__l5e/assets-v1/771a3ab3-0fbf-49ba-ae5b-ce4b18d02a8f/the-mendip-school.jpg) [All case studies](/case-study) Education # The Mendip School 30.03kWp system saving £7,768 a year for The Mendip School. [ Previous Swift Dental ](/case-study/swift-dental)[ Next The Westminster London Hilton ](/case-study/the-westminster-london-hilton) ## Project overview The system is projected to save nearly £10,000 in its first year alone. The installation at Mendip School was part of a wider roll out of renewable technology at schools across the Southwest. Together, these projects represent a major step forward in the Trust’s sustainability journey, cutting carbon emissions, reducing energy costs, and supporting environmental education for pupils across the region. .e-loop-item-13340 .elementor-element.elementor-element-166d83a:not(.elementor-motion-effects-element-type-background),.e-loop-item-13340 .elementor-element.elementor-element-166d83a>.elementor-motion-effects-container>.elementor-motion-effects-layer{background-image:url("https://alliantenergy.co.uk/wp-content/uploads/2026/02/Bowland-Pennine-Mountain-Rescue-Solar-11.jpg")}.e-loop-item-13340 .elementor-element.elementor-element-166d83a:hover{background-image:url("https://alliantenergy.co.uk/wp-content/uploads/2026/02/Bowland-Pennine-Mountain-Rescue-Solar-11.jpg")} ### The challenge Like most education operations, The Mendip School 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 30.03kWp array using 68 high-efficiency mono-PERC panels, paired with a Solis hybrid inverter. The Solis 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 The Mendip School approximately **£7,768** on electricity costs, with a payback term of **2.6 Years** and a projected total ROI of **962%**. Over the 25-year warranted life of the panels, the cumulative saving is forecast at **£161,380** — 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 **5.8 Tonnes** 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 The Mendip School'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 education sector Education 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 The Mendip School project demonstrates how the model scales for this kind of operation. System 30.03kWp Panels 68 Inverter Solis Install 1 Week ### Project FAQ ### How big is the solar system installed at The Mendip School? Alliant Energy installed a 30.03kWp solar PV system using 68 panels paired with a Solis inverter. The installation took 1 week from arrival on site to commissioning. ### How much does The Mendip School save each year? The Mendip School saves approximately £7,768 per year on electricity, with projected lifetime savings of £161,380 over the system's 25-year guaranteed performance period. The payback term is 2.6 Years, delivering a total ROI of 962%. ### 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 5.8 Tonnes 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. ### Financial impact Rate of ROI 38.5% Total ROI 962% Annual savings £7,768 Lifetime savings £161,380 Payback term 2.6 Years Annual CO₂ saved 5.8 Tonnes [Commercial Savings Calculator →](/calculator) ### More projects [ Frozen Dessert Distribution Tropical Ices £13,700/yr · 5 Years payback ](/case-study/tropical-ices)[ Pewter & Silverware Manufacturing Pinder Brothers £3,700/yr · 5 Years payback ](/case-study/pinder-brothers)[ Logistics & Haulage Shepherd Distribution £22,389/yr · 2.9 Years payback ](/case-study/shepherd-distribution)[ Retail Technology Datascan Retail Systems £3,457/yr · 5.9 Years payback ](/case-study/datascan-retail-systems) Three ways to get started ## Ready to find out what solar saves you? Get a tailored quote in one working day. No obligation. No hard sell. Speak to a renewable energy engineer — not a salesperson — at a time that suits you. [Get a Quote → ](/quote) [Request a Callback →](/request-callback) [Download Brochure →](/brochure) Accreditations ## Certified, registered, and insured. Every time. MCS certification isn't a box-ticking exercise — it qualifies your system for Smart Export Guarantee payments and government grants. Our installers are also NICEIC-approved and TrustMark-registered, and every install is fully insured. ![Citation ISO Certification: ISO 9001 quality management, ISO 14001 environmental management and ISO 45001 occupational health and safety](/__l5e/assets-v1/180183cd-e6fd-4b0a-984c-83e6a41390d7/accreditations-iso.jpg) ![Alliant Energy — Renewable Energy Solutions](/assets/logo-IFrgP5Dc.png) Renewable energy & energy-saving specialists. MCS-registered solar PV, battery storage, heat pumps and EV charging across the UK. #### Quick Links - [Home](/) - [About Us](/about-us) - [Services](/services) - [Case Studies](/case-study) - [Areas We Cover](/solar-panel-quotes-north-west) - [Contact](/contact) - [Privacy Policy](/privacy) - [Terms & Conditions](/terms) #### Services - [Solar for Homes](/services/solar) - [Commercial Solar](/services/commercial-solar) - [Battery Storage](/services/battery-storage) - [Air Source Heat Pumps](/services/heat-pumps) - [EV Charging](/services/ev-charging) - [Energy Saving Advice](/services/energy-saving-advice) #### Contact - [01282 501589](tel:01282501589) - [info@alliantenergy.co.uk](mailto:info@alliantenergy.co.uk) - Unit 214 Northlight Industries, Pendle Road, Brierfield, Nelson BB9 5FL [Get a Quote](/quote)[Brochure](/brochure) Alliant Energy Ltd is an Introducer Appointed Representative (Financial Services Register No. 1020779) of Phoenix Financial Consultants Limited (Phoenix). Phoenix is a credit broker, not a lender. Phoenix is authorised and regulated by the Financial Conduct Authority (FRN: 539195), and offers finance from its panel of lenders. All finance subject to status and credit checks. © 2026 Alliant Energy Ltd. All rights reserved. [Privacy Policy](/privacy)[Terms & Conditions](/terms) MCS Registered · TrustMark · NICEIC [Chat with AI](/chat) [Call back](/request-callback) [Get a Quote](/quote) [Get a Brochure](/brochure) [Get a Quote](/quote) [Chat with AI](/chat)