Commercial & Grid-Scale Solar Installation Contractors | Swindon & Wiltshire
Commercial & Grid-Scale Solar Installation – Swindon & Wiltshire
At Core 7 Solar, we are a NICEIC and MCS-certified commercial solar installer covering Swindon + Wiltshire + M4 corridor (Bristol, Gloucestershire, Oxfordshire). We design, install and commission commercial, industrial and grid-connected solar PV and battery storage systems for factories, warehouses, business parks and utility-scale sites, including DNO liaison, G98/G99 grid connection and half-hourly metering compliance.
Our MCS-certified engineers deliver turnkey solar energy systems for factories, warehouses, business parks and large-scale solar farms — from design and DNO liaison to installation, testing and commissioning.
With a proven background in electrical contracting and renewable-energy infrastructure, we ensure every project meets the highest standards of safety, efficiency and compliance.
Our Solar Installation Services
-
Commercial & Industrial Solar PV
-
Roof-mounted and ground-mounted systems
-
Solar for warehouses, offices, schools and agricultural sites
-
Full design, cable routing, containment and DC/AC integration
-
Inverter, isolator and monitoring system installation
-
-
Grid-Connected & Utility-Scale Systems
-
MW-scale solar farms and hybrid renewable sites
-
High-voltage (HV/LV) interface and switchgear installation
-
DNO applications, G99 compliance and export-limit configuration
-
-
Battery Storage Integration
-
AC- and DC-coupled systems for peak-shaving and load-balancing
-
Energy management and export-control systems
-
Integration with solar PV for on-site energy resilience
-
-
Maintenance & Testing
-
Thermal imaging, IV-curve tracing and fault diagnosis
-
Ongoing maintenance contracts and performance reporting
-
Inspection and certification to BS 7671 and MCS standards
-
Why Choose Core 7 Solar
✅ Regional Experts – Based in Swindon, covering Swindon + Wiltshire + M4 corridor (Bristol, Gloucestershire, Oxfordshire).
✅ Commercial-Grade Experience – Trusted by builders, developers and facilities managers for high-output installations.
✅ Full-Service Delivery – From feasibility and design to installation, commissioning and O&M.
✅ Accredited & Compliant – MCS, NICEIC and ISO-certified installations delivered to all UK regulations.
✅ Sustainability & ROI Focused – Helping clients reduce carbon emissions and electricity costs while maximising long-term yield.
Want to see the numbers for your own site? Try our free Commercial Solar ROI & Payback Calculator for an instant cost and payback estimate.
Why Swindon Businesses Choose Core 7 for Solar
✅ 10 years trading – delivering commercial electrical, fire safety and renewable energy projects across Swindon, Wiltshire and the M4 corridor for over a decade.
✅ A team of 8 electricians and apprentices, backed by NICEIC, MCS and SafeContractor accreditation.
✅ IET & IFE qualified director – our director is a member of the Institution of Engineering and Technology (MIET) and the Institution of Fire Engineers (GIFireE).
✅ Real solar project experience – including a multi-property solar installation scheme across the South West, delivered in partnership with a roofing contractor to retrofit solar systems and cut residents’ energy costs, project-managed end-to-end by our own team.
“I have been using Gareth at Core 7 for both personal and commercial work for over a year. He is always honest, up front and totally reliable… His prices are more than competitive for the quality of service and work you receive. For any and all electrical work, look no further than Core 7.”
— Joseph C., 5-star Yell review
Sectors We Serve
-
Industrial & Manufacturing
-
Agriculture & Warehousing
-
Public Sector & Education
-
Business Parks & Commercial Estates
-
Utility-Scale & Grid-Connected Solar Farms
How Much Can Your Business Save with Solar PV?
Rising electricity prices are driving more UK businesses to take control of their energy costs. With a commercial solar PV system from Core 7 Solar, your business can generate clean electricity, reduce grid reliance, and earn revenue by exporting surplus power.
We design and install high-efficiency solar systems across Swindon + Wiltshire + M4 corridor (Bristol, Gloucestershire, Oxfordshire), helping companies slash bills, stabilise costs and future-proof their operations.
Key Financial Benefits of Commercial Solar
⚡ 1. Cut Electricity Bills by Up to 70%
Every kWh you generate on-site is one you don’t have to buy from your supplier. Depending on system size and usage, solar PV can cut business energy bills by 50–70%.
-
Lower daytime operating costs
-
Reduced exposure to energy price spikes
-
Immediate savings from day one
💰 2. Earn from Selling Surplus Energy
When your system produces more energy than you use, the excess is automatically exported to the grid.
Through the Smart Export Guarantee (SEG) or private Power Purchase Agreements (PPAs), your business can earn payments for every unit exported.
Typical export rates (2025) range from 8p to 25p per kWh, depending on the provider and contract length — creating a valuable secondary income stream.
🌞 3. Fast ROI & Long-Term Profit
Commercial solar PV typically pays for itself within 4 to 6 years, depending on system scale and energy tariffs. With lifespans exceeding 25 years, the return on investment can exceed 400% over the system’s lifetime.
-
Instant reduction in overheads
-
Increased asset value
-
Tax incentives through the Annual Investment Allowance (AIA)
♻️ 4. Improve Sustainability & ESG Credentials
Generating clean electricity on-site helps reduce your Scope 2 carbon emissions and strengthens your company’s ESG and sustainability profile — increasingly important for clients, tenders and investors.
-
Demonstrate commitment to net zero
-
Support CSR and sustainability goals
-
Gain competitive advantage in procurement
How It Works
Site Assessment & Design – Core 7 engineers evaluate your site, roof orientation and energy profile.
Installation & Commissioning – We handle the full electrical and solar installation, including DNO applications.
Monitoring & Maintenance – Real-time data and performance tracking to ensure maximum yield.
Sell to the Grid – Export surplus energy automatically and receive monthly SEG or PPA payments.
Example Business Savings
| System Size | Typical Site | Annual Energy Generated | Annual Bill Savings | Export Income | Payback Period |
|---|---|---|---|---|---|
| 50 kW | Small factory | 45,000 kWh | £8,100 | £900 | 5.2 years |
| 150 kW | Medium warehouse | 135,000 kWh | £23,000 | £3,200 | 4.8 years |
| 500 kW | Industrial site | 450,000 kWh | £75,000 | £10,000 | 4.5 years |
(Based on £0.18 per kWh grid cost and 20% export rate – figures indicative only.)
Combining solar with commercial EV charging lets you power your fleet from your own generation. And before any new installation, it’s worth checking your site’s commercial EICR is up to date.