Commercial Solar Installers UK — MCS-Certified, EPVS-Audited, Scotland & UK-Wide

Why UK businesses are installing commercial solar in 2026

Three forces have moved commercial solar from "ESG-nice-to-have" to the obvious capital project on most UK industrial sites. First, non-domestic electricity prices have settled at 28-38p/kWh — roughly triple the pre-2021 baseline. Second, the Annual Investment Allowance and Full Expensing combine to let UK limited companies write off 100% of qualifying solar PV CapEx against taxable profit in the year of installation (HMRC AIA guidance). Third, Scope 2 emissions disclosure is now baked into procurement: blue-chip buyers, public-sector framework contracts and Streamlined Energy and Carbon Reporting (SECR) all reward the supplier with a credible decarbonisation pathway.

The financial outcome is simple. A 100 kWp rooftop array on a south-aspected industrial unit in central Scotland or the north of England generates roughly 88,000 kWh per year. Self-consume 70% of that at 32p/kWh and you save around £19,700 a year on grid imports. Export the remainder at 10p/kWh SEG and you bank another £2,640. After Year-1 AIA relief, net CapEx on an £85,000 system drops to roughly £63,750 — putting payback inside four years and lifetime ROI above 400%.

Commercial solar also de-risks your energy buying for 25-30 years. Once the panels are on the roof, they generate at zero marginal cost regardless of what wholesale gas does next winter. For finance directors, that's a long-dated hedge with a positive NPV — not a sustainability headline.

What we install — full commercial PV stack

Ecoaim is a full turnkey commercial solar installer. Every system is signed off by an Ecoaim engineer and backed by a 5-year workmanship warranty plus a 25-year panel performance warranty.

• Rooftop commercial PV (30 kWp – 1 MWp) — flat-roof ballasted, profiled metal, trapezoidal, standing-seam, asbestos cement (with HSE-licensed assessment), and pitched-roof tile or slate. Penetration-free ballasted designs available for sensitive membranes.
• Ground-mount solar farms (100 kWp – multi-MW) — for sites with land alongside the building or unused yard space. Includes planning support where required, ecology assessments and DNO export connection.
• Solar carports — generate clean power and provide covered EV charging for staff and customers. A typical 60-bay carport delivers ~250 kWp and turns dead car-park CapEx into a generating asset.
• Commercial battery storage (BESS) — 50 kWh to 1 MWh+ commercial-scale battery systems for peak-shaving, time-of-use arbitrage, backup and Triad/DUoS avoidance. We design against your half-hourly profile.
• Commercial EV charging — workplace AC banks, destination 22-50 kW chargers, and DC fast-charging up to 360 kW. Workplace Charging Scheme funded where eligible.
• Operations & Maintenance (O&M) — annual performance audit, inverter health checks, panel cleaning, real-time monitoring portal, and a 25-year panel performance warranty backed by our manufacturer partners.

Commercial solar system sizing & typical CapEx (2026)

System size	Roof area (approx)	Annual generation	Indicative CapEx	Annual saving*	Payback
30 kWp	~180 m²	~26,000 kWh	£24,000 – £32,000	£5,800 – £7,200	4 – 6 yrs
50 kWp	~300 m²	~44,000 kWh	£37,500 – £47,500	£9,400 – £11,800	4 – 6 yrs
100 kWp	~600 m²	~88,000 kWh	£75,000 – £100,000	£18,500 – £22,300	3 – 5 yrs
250 kWp	~1,500 m²	~220,000 kWh	£180,000 – £225,000	£46,000 – £56,000	3 – 5 yrs
500 kWp	~3,000 m²	~440,000 kWh	£340,000 – £425,000	£92,000 – £112,000	3 – 5 yrs
1 MWp+	~6,000+ m²	~880,000 kWh+	£640,000 – £820,000	£185,000+	3 – 5 yrs

* Indicative annual savings combine self-consumption at 32p/kWh and SEG export at 10p/kWh, assuming a 70% self-consumption ratio. Final CapEx depends on roof type, structural survey, DNO connection, BESS integration and capital-allowance treatment. All figures EPVS-audited before sign-off.

Funding routes — CapEx vs Hire Purchase vs PPA

The three commercial solar funding routes deliver materially different cash-flow profiles. Most of our clients pick CapEx where balance-sheet headroom and AIA appetite exist, Hire Purchase where capital is tight but ownership matters, and a fully-funded PPA where the asset doesn't fit the balance sheet at all (leased properties, multi-site portfolios, or boards that want zero CapEx exposure).

	CapEx purchase	Hire Purchase	Power Purchase Agreement (PPA)
Upfront cost	100% of CapEx	Deposit + 5-10 yr term	£0 upfront
Who owns the system	You	You (after final payment)	Third-party funder for 15-25 yrs
Year-1 tax relief	AIA / Full Expensing on 100% CapEx	AIA on the asset; interest deductible	None — you buy electricity, not a system
What you pay	Nothing after Year 0	Fixed monthly HP payment	Fixed p/kWh tariff (typically 8-14p)
Best for	Strong cash position, owner-occupied	Capital constrained, wants ownership	Leased premises, multi-site, no CapEx appetite
Typical IRR	15-30%+	10-18%	Pure cost-saving, not IRR-modelled

Ecoaim Ltd is an introducer appointed representative of Ideal Sales Solutions Ltd t/a Ideal4Finance, FRN 703401. All finance is subject to status, credit checks and project-specific underwriting. We do not provide regulated financial advice — speak to your accountant on capital-allowance treatment.

Grid connection, MCS & compliance — what we handle

Any commercial PV system over roughly 11 kWp (16A per phase) requires a G99 Distribution Network Operator (DNO) application, the technical engineering instrument that authorises export to the grid. G99 approval typically takes 8-12 weeks for smaller commercial systems and longer for arrays above 250 kWp, where a full Statement of Works may be required. Ecoaim handles the G99 process in-house with SP Energy Networks, SSE Networks (SSEN), Northern Powergrid and SP Distribution — no paperwork on your side.

Every Ecoaim install is MCS-certified — the Microgeneration Certification Scheme standard required for SEG eligibility, lender recognition and SECR-grade carbon reporting. We're EPVS-audited, meaning every quoted yield projection is independently checked against PVGIS and the system's actual irradiance profile — your finance director sees a Trading Standards-grade financial document, not in-house optimism. We're also accredited with RECC, NICEIC and TrustMark, and registered with Solar Energy UK.

For larger systems we manage Section 75 / Section 30 planning where required, structural roof surveys to BS 5534 / BS EN 1991, half-hourly metering coordination with your supplier, and SEG registration with the export licensee of your choice (we recommend Octopus Outgoing for export tariff flexibility). Asbestos roof surveys are arranged through HSE-licensed partners where the building age requires it.

Our proven 6-step commercial installation process

1. Feasibility & site visit (Week 1) — free site survey by an Ecoaim engineer. We collect roof drawings, structural data, half-hourly meter data and your incoming supply rating. No-cost, no-obligation.
2. EPVS-audited yield & financial model (Week 2) — independent EPVS audit of generation projection and savings model. Output is a board-ready financial pack with pre/post-tax IRR, NPV, payback and Scope 2 carbon offset.
3. Design & DNO application (Weeks 3-4) — full electrical design package, structural sign-off, and G99 submission to your DNO (SP Energy Networks, SSEN, NPg, SPD or other).
4. DNO approval window (Weeks 4-14) — DNO typically responds within 8-12 weeks for sub-250 kWp systems. Larger systems and constrained networks take longer; we keep you updated weekly.
5. Install & commission (Weeks 14-18) — physical install on a 100 kWp roof is typically 1-2 weeks, larger systems 3-6 weeks. We commission against the design spec, EPVS audit and MCS handover documentation pack.
6. Handover & O&M (Week 18+) — monitoring portal credentials, MCS certificate, EPVS certificate, performance baseline, SEG registration, and (optional) annual O&M contract with performance guarantee.

Sectors served — commercial solar across UK industry

We've delivered commercial solar systems across nine core UK sectors, each with its own load profile, regulatory backdrop and ROI sweet spot.

• Manufacturing & industrial — flat single-storey roofs, daytime base load and three-phase supply make manufacturing the strongest commercial solar payback in the UK.
• Warehousing & logistics — distribution centres typically have 5,000-30,000 m² of unshaded roof; ideal for 500 kWp – 2 MWp arrays.
• Agriculture & farms — barn roofs, parlour loads, refrigeration and grain drying align with peak solar generation.
• Hospitality & hotels — high day-time and evening load profiles pair well with PV plus BESS for evening discharge.
• Healthcare & private clinics — flat roof areas, year-round daytime load and ESG procurement requirements.
• Retail & supermarkets — daytime trading hours, refrigeration loads and large car parks for solar carports.
• Public sector & schools — frameworks recognise MCS-certified suppliers; carbon-reporting requirements drive uptake.
• Universities & colleges — large estates, sustainability mandates and access to PSDS funding.
• Offices & data centres — strong daytime base load; data centres are increasingly procuring on-site renewable PPA contracts.

Featured commercial solar case studies

Three recent commercial solar installations across our delivery footprint, with audited generation and savings numbers. Full project teardowns linked.

Generation, savings and CO₂ figures are audited from monitoring-portal data and site half-hourly readings. See all case studies for the full portfolio.

Why Ecoaim — what differentiates us as a commercial solar installer

• Scotland HQ with UK-wide delivery — Livingston EH54 base means local expertise with SP Energy Networks and SSEN DNOs, plus engineers covering UK-wide commercial projects.
• MCS-certified + EPVS-audited every quote — every yield projection is independently audited under the EPVS scheme. No in-house optimism — your finance director sees a Trading Standards-grade financial document.
• 110+ installs, 1.2 million kWh generated, 220 tonnes CO₂ displaced — real audited portfolio numbers, not marketing claims.
• Octopus Flux-compatible installer — we design battery and tariff stacks to maximise Octopus Flux export earnings.
• Three funding routes under one roof — CapEx, Hire Purchase via Ideal4Finance (FRN 703401), or fully-funded PPA via our funder network.
• In-house customer service team — named commercial engineers Duncan McGreagor and Jeremy own your project from feasibility to handover. Not an outsourced call centre.
• 4.4-star Trustpilot rated. See verified Ecoaim reviews.
• 14 real install videos on YouTube, embedded across our case studies and sector pages — visual proof competitors don't have.

Coverage — Scotland Central Belt HQ + UK-wide commercial

Headquartered in Livingston, EH54, our delivery footprint covers the Scottish Central Belt as a dense local network (Edinburgh, Glasgow, Falkirk, Stirling, Fife, Lanarkshire, West Lothian) plus the wider Scottish corridor (Aberdeen, Dundee, Perth, Inverness). For commercial projects across the north of England (Carlisle, Newcastle, North Yorkshire, Manchester, Leeds, Liverpool) we operate with our own engineers on-site. For commercial projects further south we run a vetted partner-installer network with senior Ecoaim engineers on-site for design sign-off, EPVS audit and commissioning — meaning a Bristol manufacturer or a Birmingham warehouse gets the same EPVS-audited project pack as a Falkirk client.

Commercial solar FAQs

How much do commercial solar panels cost in the UK?

Typical UK commercial PV costs roughly £750-£900 per kWp installed in 2026 for a 50-250 kWp rooftop system, falling on larger arrays. A 100 kWp system therefore lands around £75,000-£100,000 CapEx, with payback of 3-5 years against current grid prices. Ecoaim provides a free EPVS-audited yield projection and quote within 24 hours.

Can I claim tax relief on a commercial solar installation?

Yes. UK limited companies can typically claim the Annual Investment Allowance (AIA) or Full Expensing — currently allowing 100% of qualifying solar PV CapEx to be written off against taxable profit in Year 1. Speak to your accountant; we provide an EPVS-compliant cost breakdown to support the claim.

Do I need planning permission for commercial solar panels?

Most rooftop commercial PV in England, Scotland and Wales falls under permitted development, provided the panels do not project more than 200mm above the roof plane and the building is not listed or in a conservation area. Ground-mount arrays over 1 MW and most solar carports do need a planning application — we handle the submission as part of our service.

What is a G99 application and do you handle it?

G99 is the Distribution Network Operator (DNO) application required for any commercial PV system over 16A per phase (roughly 11 kWp+). It can take 8-12 weeks for smaller commercial sites and longer for arrays above 250 kWp. Ecoaim manages the full G99 process with SP Energy Networks, SSEN, Northern Powergrid and SPD as part of the install — no paperwork on your side.

Can I install solar panels on a leased commercial property?

Yes, but you will need landlord consent. The simplest route is a CapEx install with a deed of variation, or a Power Purchase Agreement (PPA) where a third party owns the system and you simply buy the cheaper solar electricity at a fixed sub-grid rate. Ecoaim handles both routes and can speak directly to your landlord.

What funding options do you offer for commercial solar?

Three routes: outright CapEx purchase (best IRR), Hire Purchase via Ideal4Finance (Ecoaim Ltd is an introducer appointed representative of Ideal Sales Solutions Ltd t/a Ideal4Finance, FRN 703401), or a fully-funded Power Purchase Agreement (PPA) where you pay nothing upfront and buy the electricity at a fixed rate, typically 8-14p/kWh.

How long does a commercial solar installation take?

From signed contract to commissioned system is typically 12-20 weeks — most of that is the 8-12 week G99 DNO approval. The physical install on a 100 kWp roof is usually 1-2 weeks. We give you a guaranteed milestone plan after feasibility sign-off.

Do you provide ongoing maintenance for commercial solar systems?

Yes. Ecoaim offers commercial O&M packages including annual performance audit, inverter health check, panel cleaning, real-time monitoring and a 25-year panel performance warranty backed by our manufacturer partners. In-house customer service team, not outsourced.