Commercial Solar Battery
Storage in Wales
Store the energy your solar panels generate, reduce your reliance on the grid,
and slash your business energy bills — even when the sun isn’t shining.
Battery Storage for Business
Commercial Solar Battery Storage For Businesses in Wales
Commercial solar battery storage allows your business to capture and store surplus energy generated by your solar panel system, rather than exporting it back to the grid at a low rate. That stored energy can then be used during peak tariff periods — significantly reducing your electricity costs.
At Celtic Green Energy, we design and install bespoke Solis-powered battery storage systems for Welsh businesses of all sizes — from small commercial premises to large industrial sites.
The Process
How Commercial Battery Storage Works for Your Business
A smart battery storage system works alongside your solar panels to give your business total control over your energy use.
Generate Solar Power
Your rooftop solar panels generate clean, free electricity during daylight hours powering your business operations in real time.
Store Surplus Energy
Any solar energy your business doesn't use immediately is stored in your Solis battery system rather than wasted or sold back cheaply.
Power Your Business 24/7
Draw from your stored battery energy in the evening, at night, or during peak tariff periods — avoiding the most expensive grid electricity.
Reduce Costs & Earn
Lower your energy bills, earn through smart export tariffs, and participate in demand flexibility schemes to generate additional revenue.
Systems designed around your business’s specific energy profile and usage patterns.
Ready to find out how much your business could save?
Get a free, no-obligation commercial energy assessment from our experts.
POTENTIAL SAVINGS
How Much Can Battery Storage Save Your Business?
Based on our installed commercial systems across Wales results vary depending
on your energy usage, tariff, and system size.
Designed for Business
Supporting Your Business Every Step of the Way
At Celtic Green Energy, we don’t just install batteries — we build long-term energy strategies for Welsh businesses. As authorised Solis installers for Wales, we exclusively use Solis C&I hybrid inverters — Bloomberg NEF Tier 1 rated, backed by a full UK warranty. From initial survey to system commissioning and ongoing monitoring via SolisCloud, we’re with you throughout — with minimal disruption to your operations.
- Full site survey and energy audit included
- Bespoke Solis system design matched to your usage profile
- Professional installation by MCS-certified engineers
- SolisCloud monitoring app — track savings in real time
- Grid connection and DNO application handled for you
- Ongoing maintenance contracts available
Our Technology Partner
Powered by Solis — World-Leading Battery Technology
Celtic Green Energy is proud to be an authorised Solis installer for Wales. Solis (Ginlong Technologies) is a Bloomberg NEF Tier 1 manufacturer with over 4 million inverters installed globally and a dedicated UK support team.
![Solis S6-EH3P 30-50K](https://celticgreenenergy.co.uk/wp-content/uploads/2026/04/1735107142562_af8fc26f-8e13-453f-b324-e68218f63738.webp")
S6-EH3P(30–50)K-H
- →Three-phase high voltage hybrid inverter
- →160% overload capability for 2 seconds
- →Supports 20A max string input
- →Perfect for medium commercial sites
- →Seamless grid/battery switching
S6-EH3P(80–125)K-H
- →Three-phase high voltage hybrid inverter
- →100% three-phase unbalanced output
- →Up to 200A charge/discharge current
- →Designed for large industrial sites
- →Parallel operation for scalable systems
S6-GC3P(40–150)K
- →Three-phase commercial string inverter
- →Max efficiency up to 98.8%
- →Up to 10 MPPTs — multiple roof orientations
- →WiFi / GPRS / 4G monitoring support
- →SolisCloud platform included
SolisCloud — Real-Time Monitoring Included
Every Solis installation includes access to SolisCloud — monitor your battery state of charge, energy generation, export, import and savings in real time from any device.
Why Choose Us
Why Celtic Green Energy for Battery Storage?
- Wales's Leading Commercial Installer — over 500 installations across South, Mid and North Wales.
- HIES Accredited — qualifying your business for Smart Export Guarantee payments.
- Authorised Solis Installers — Bloomberg NEF Tier 1 technology with full UK warranty.
- Large Projects, No Problem — from 10 kWh warehouse systems to multi-MWh industrial installations.
You're in Safe Hands
Delivered across Wales
In commercial renewables
Based on 340+ reviews
Every installation certified
Approved & Accredited By:
REAL RESULTS
Real Businesses, Real Energy Savings
Commercial battery storage installations we’ve completed across Wales — delivering measurable returns for our clients.
Free Assessment
Start Reducing Your Energy Costs Today
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