Commercial
Battery Storage
How commercial battery storage works
1
A commercial battery stores electricity so your business can use it later, rather than consuming it immediately or exporting it to the grid.
2
If your business has solar panels, surplus solar electricity can be stored during the day and used later when solar generation decreases.
3
A suitable commercial battery can also charge from the grid, allowing your business to take advantage of cheaper electricity tariffs at certain times.
4
When your business needs electricity, the battery can supply stored energy before additional electricity is drawn from the grid.
Commercial projects using battery storage
See how Phase Energy has incorporated battery storage into commercial energy systems across different sites and sectors.
-
Commercial Solar Installation for a Farm in Malton, North Yorkshire
Estimated to generate 21,259 kWh a year with a five-year payback.
-
Solar & Battery Installation for Madginford Hall, Maidstone
Designed to cover 86% of annual electricity use with whole-hall backup.
-
Commercial Solar Installation for Montgomorie & Son Ltd, Billericay, Essex
Estimated to deliver £5,232 in year-one benefit with a four-year payback.
Battery storage with solar,
or battery storage on its own?
| BENEFIT | solar + battery | battery without solar |
|---|---|---|
| Store surplus solar generation |  |  |
| Generate electricity | | |
| Charge from lower-cost grid electricity | | |
| Shift electricity use between tariff periods | | |
| Use stored electricity later | | |
| Potential backup or resilience | | |
| Particularly suited to | Sites wanting to retain more solar generation | Sites where tariff flexibility or resilience creates value |
When does commercial battery storage make sense?
Commercial battery storage can be particularly beneficial for businesses looking to reduce electricity costs, maximise solar energy usage and manage peak electricity demand.
By storing surplus solar electricity or charging during cheaper off-peak periods, businesses can use stored energy when electricity prices are higher or demand increases.
At Phase Energy, we assess your electricity consumption, operating hours and tariffs to determine whether battery storage can deliver worthwhile savings and a strong return on investment.
Do you already have commercial solar?
Commercial battery storage can often be added to an existing solar PV installation, helping your business make better use of the electricity it already generates.
At Phase Energy, we assess your existing solar equipment, electricity consumption and export levels to determine whether battery storage could provide additional savings.
By storing surplus solar electricity for use later, your business can increase solar self-consumption, reduce reliance on the grid and maximise the return on your existing solar investment.
The technology behind your commercial battery storage system
At Phase Energy, we work with trusted manufacturers including Fox ESS, Growatt and Sigenergy, offering reliable and scalable commercial battery storage and inverter technology.
Every business has different energy requirements, which is why we select equipment based on battery capacity, power output, expandability, backup power capabilities and compatibility with existing solar PV systems and electrical infrastructure.
From standalone commercial battery storage to fully integrated solar and battery systems, we ensure the technology is tailored to your business’s electricity demand, operational requirements and future growth. Where required, suitable systems can also provide backup power during grid outages.
Our focus is on delivering reliable, efficient and future-ready energy storage solutions that maximise savings, improve energy resilience and provide long-term performance.
What can commercial battery storage deliver?
Commercial battery storage can help businesses reduce electricity costs, maximise solar energy usage, manage peak demand and improve energy resilience.
The benefits depend on your site’s electricity consumption, existing solar generation, energy tariffs and storage requirements.
Explore some of our commercial battery storage projects to see how Phase Energy has integrated battery technology into larger renewable energy systems, helping businesses gain greater control over their electricity usage.
stanton nurseries
first year benefit
£7,648
49.67 kWp solar
30 kWh battery storage
Projected payback: 4 years
dairy farm
first year benefit
£11,300
69.00 kWp solar
23 kWh battery storage
Projected payback: 5 years
madginford hall
first year benefit
£2,064
14.10 kWp solar
23 kWh battery storage
Projected payback: 9 years
Includes bird protection, one-sided scaffolding, standard installation.
What happens next?
It starts with a free commercial site survey, where we assess your electricity consumption, existing equipment and battery storage requirements.
We’ll review your energy usage and any existing solar generation to identify potential savings and the most suitable storage solution.
You’ll then receive a tailored proposal outlining the recommended system, installation costs, expected benefits and projected return on investment.
Why People choose Phase Energy
A good installation is about more than panels and batteries. It is about careful design, quality workmanship, clear protection and knowing there is someone to call afterwards.
Finance & low deposit
Aftercare
Accreditations
Warranties
Testimonials
What our customers say
Accreditations & Partners
At Phase Energy, our recognised industry accreditations reflect our commitment to quality, safety and professional installation standards. We also work closely with some of the world’s leading solar and battery manufacturers, allowing us to offer innovative, reliable technology backed by trusted warranties and ongoing support.
Frequently Asked Questions
Often, yes. We’ll look at the existing panels, inverter, electrical infrastructure and how the system currently performs before recommending the most appropriate approach.
Yes. A suitable battery can charge from the grid and make that stored electricity available later. Whether this makes commercial sense depends on your consumption pattern, tariffs and what you want the system to achieve.
Yes, with suitable equipment and tariffs. This can allow electricity to be stored during lower-cost periods and used later.
We look at your electricity consumption, when demand occurs, existing solar generation, tariffs and the purpose of the battery. The aim is to recommend useful storage capacity rather than simply the largest possible system.
Potentially, but backup is not automatic. If resilience during a power cut is important, the system must be designed specifically around that requirement.
Often, yes, although expandability varies between systems. If future growth is likely, we can consider that when the original installation is designed.
LET’S TALK ABOUT YOUR PROJECT
Get in touch
Planning a commercial solar or battery project? Tell us about your site, energy use and objectives and we’ll help you understand the options, potential savings and next steps.