100kW Solar Panel System in the UK
Save heavy on your power bills
Electricity costs keep going up — yet the sun offers free energy daily. Let’s help you harness that power for long-term savings. The 100kW solar system is a trusted option for large-scale UK businesses seeking to reduce energy costs and improve sustainability. It is the default solution that businesses must employ to reduce their grid dependency and enhance sustainable status, as it effectively enables them to do so.
When you run at scale, the system also gives you the performance you require with the reliability that you can depend on.
So, is 100kW the right fit for your business?
Why Choose a 100kW Solar Panel System?
If your business uses more energy than average, you need a solar system that’s built to keep up.
The 100kW system is designed for serious commercial energy loads, ideal for facilities that operate during daylight hours and want to manage long-term electricity costs. Going for 100kW solar panels can be great for a variety of reasons:
- If you operate industrial sites, large warehouses, campuses, and healthcare complexes
- It’s also ideal for organisations pursuing energy independence or working toward ESG goals
- Companies that want an effective way to decrease carbon emissions
- The panels are constructed with commercial-quality panels and hybrid-inverter-ready inverters
- They are compatible with battery storage and EV chargers
- Guaranteed under a 25-year warranty on both product and performance
- Supported by end-to-end service from Solar4Good
Solar4Good is a UK-based, family-run company with a reputation built on honesty, quality, and long-term customer relationships. We treat every client like a partner, not a transaction.
Is a 100kW Solar Panel System Right for Your Business?
If your business spends between £42,000 and £50,000 a year on electricity, a 100kW solar system can offset a significant portion of your daytime usage — reducing grid dependence and shielding you from rising energy prices.
Typical cost: around £80,000, based on:
- Roof layout, size, access, and structure
- Panel type, inverter size, and electrical setup
- Required permissions and DNO upgrades
We’ll confirm the exact price, post a free on-site assessment tailored to your needs, but, an approximate cost for a 100kW solar panel can be £850-900.
Let’s find a better way for you to save on high energy bills
Quick Match Guide
Here’s how a 100kW solar system fits across different business types
Business Type
Annual Energy Bill
Fit for 100kW?
Large Food Processing Plant
£45,000–£50,000
Excellent Fit
Industrial Manufacturing Hub
£43,000–£49,000
Very Suitable
Multi-Warehouse Operations
£42,000–£47,000
Strong Match
Private Healthcare Complex
£44,000–£50,000
Ideal Fit
Higher Education Campus
£43,500–£48,000
Smart Choice
Not sure where you stand? Let’s take a look with a free site visit.
Please note that we serve a wide range of industries beyond those listed above. These examples are provided to illustrate typical applications. For more information and to discuss how we can support your specific business needs, please feel free to get in touch
What’s Included in a 100kW Solar Installation?
Whether it’s the initial inspection, installation or maintenance, we provide a comprehensive solution.
Transparency in pricing, expertise in installation – Solar4Good is Good for you.
Stage
What’s Involved
Site Review
Full roof inspection, usage review, and goals discussion
Design Proposal
Custom panel layout, performance modelling, and ROI forecas
Permissions
DNO applications and any planning requirements managed by us
Installation
Safe, efficient, and low-disruption install from trained pros
Ongoing Support
System tracking, diagnostics, and responsive aftercare
We simplify solar, even at scale, to meet all your current and future energy needs.
Every Solar4Good installation is fully MCS-certified and RECC-approved, meeting the highest UK standards for safety, compliance, and performance.
100kW Solar ROI: When Will It Pay Off?
A 100kW solar system would generally cover its costs in 4 to 7 years based on usage, tariff rates, and the local environment.
If your company spends around £42,000–£50,000 per year on electricity, you could start saving from day one with the right usage and system setup. The payback is going to last for over decades.
Ready to Scale Up with Solar?
Schedule Your Free Site Check Now
Frequently Asked Questions:
100kW Commercial Solar
Yes, provided you have a warehouse, factory, care center or campus that will be regularly occupied during the daytime. This will be determined on a situational assessment of your roof, and the load profile.
We handle all the authorisations and planning material of DNO. So, a less than 100kW system does not need an export generation license
Absolutely, it is possible to link this system to the batteries. A lot of clients prefer batteries or charge points, or in the long run. The system allows both to be accommodated.
No, it will not break the routine of business life. We also work within your schedule and strive to have the least disturbance. Health and safety come as a priority
Yes — we provide full system monitoring, alerts, and responsive support to ensure your system performs at its best year after year.
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