Commercial Solar & Battery Systems
How Commercial Solar & Battery Storage Works
1
Generating Solar Energy
During daylight hours, your commercial solar panels generate electricity to power your business operations, reducing the amount purchased from the grid and helping lower your overall electricity costs.
2
Storing Excess Solar Energy
When your solar panels generate more electricity than your business requires, surplus energy can charge your battery storage system, allowing it to be stored for later use rather than exported.
3
Using Your Stored Energy
When solar generation falls or electricity demand increases, your battery automatically supplies stored energy to your business. Once depleted, any additional electricity required is drawn from the grid.
4
Benefit From Cheaper Electricity
With a suitable commercial electricity tariff, your battery can charge during cheaper off-peak periods and supply stored energy during more expensive hours, helping reduce your business’s overall electricity costs.
Real commercial projects using solar & battery storage
See how Phase Energy has designed solar and battery systems around very different businesses, sites and electricity requirements.
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Commercial Solar Installation for a Farm in Malton, North Yorkshire
Estimated to generate 21,259 kWh a year with a five-year payback.
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Solar & Battery Installation for Madginford Hall, Maidstone
Designed to cover 86% of annual electricity use with whole-hall backup.
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Commercial Solar Installation for Montgomorie & Son Ltd, Billericay, Essex
Estimated to deliver £5,232 in year-one benefit with a four-year payback.
Commercial solar only, or solar
with battery storage?
| BENEFIT | Solar panels only | Solar + Battery storage |
|---|---|---|
| Generate your own electricity |  | |
| Use solar electricity while it is being generated | | |
| Store surplus solar electricity |  | |
| Increase flexibility around when grid electricity is used | | |
| Charge using lower-cost off- peak electricity | | |
| Potential backup or resilience | | |
| Initial investment | Lower | Higher |
| Particularly suited to | Sites with strong electricity use during solar-generating hours | Sites wanting to use more generation on site, shift energy use or increase flexibility |
Does Your Business Need Battery Storage?
Not every commercial solar installation requires battery storage. If your business uses most of its electricity during daylight hours, a well-designed solar PV system may already deliver significant savings without a battery.
However, commercial battery storage can offer additional benefits for businesses looking to maximise their solar investment, particularly where:
- Your solar panels regularly generate more electricity than your business consumes.
- Electricity demand continues into the evening or outside daylight hours.
- You want to take advantage of cheaper off-peak electricity tariffs.
- You want greater control over energy consumption and peak electricity demand.
- Backup power and business continuity are important, where suitable equipment is installed.
At Phase Energy, we assess your business’s electricity consumption, operating hours and energy requirements before recommending battery storage.
Our priority is to ensure any additional investment delivers genuine value, measurable savings and a worthwhile long-term return.
Designed Around Your Business’s Energy Requirements
Every business has different energy requirements, which is why every commercial solar installation should be designed around the site. A successful system starts with understanding how your business uses electricity and identifying the most suitable solution for your needs.
At Phase Energy, we assess your electricity consumption, operating hours, available roof or ground space, electrical infrastructure and future expansion plans.
Using your energy consumption data, where available, we can model expected solar generation, on-site electricity usage, potential exports and the financial benefits of incorporating commercial battery storage.
We also consider practical installation requirements, including roof condition, structural suitability, cable routes and Distribution Network Operator (DNO) approvals.
Our approach is to design a tailored commercial solar and battery storage system that maximises energy savings, supports your business operations and delivers a strong long-term return on investment.
The technology behind your commercial system
At Phase Energy, we work with trusted manufacturers including AIKO, Fox ESS, Growatt and Sigenergy, providing high-quality solar panels, commercial inverters and battery storage solutions designed for long-term performance.
Every commercial installation has different requirements, which is why we carefully select equipment based on system capacity, electricity consumption, available roof space, battery storage needs and existing electrical infrastructure.
From high-efficiency solar panels to powerful three-phase inverters and scalable commercial battery storage, we ensure each component is selected to work effectively as part of a complete renewable energy system.
Our focus is on reliable technology, system compatibility and long-term performance, helping your business maximise electricity savings and achieve the best possible return on investment.
What can a commercial solar and battery system deliver?
Commercial projects vary too much in size, site conditions and energy use for a single standard price to be meaningful.
These real Phase Energy projects show how different combinations of solar generation and battery storage can produce very different commercial outcomes.
stanton nurseries
first year benefit
£7,648
49.67 kWp solar
30 kWh battery storage
4 year projected payback
dairy farm
first year benefit
£11,300
69.00 kWp solar
23 kWh battery storage
5 year projected payback
madginford hall
first year benefit
£2,064
14.10 kWp solar
23 kWh battery storage
9 year projected payback
Includes bird protection, one-sided scaffolding, standard installation.
What happens next?
It starts with a free commercial survey.
We’ll look at your site, electricity use, available space and infrastructure, and discuss what you want the project to achieve.
Where useful, we’ll review historic consumption so the system can be designed around how your business actually uses energy.
You’ll then receive a proposal covering the recommended system, expected generation, projected benefits and costs. If you proceed, we’ll handle the technical and grid requirements and plan the installation around your site.
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
No. If your business uses a high proportion of its electricity while the solar panels are generating, a solar-only system may already allow you to use much of the generated electricity on site. We assess your consumption pattern before recommending whether battery storage is likely to add sufficient value.
Historic electricity bills are useful, and for larger sites more detailed consumption data can help us understand when electricity is being used. This allows us to model the proposed system more accurately and assess whether battery storage could improve the outcome.
Yes, with suitable equipment and tariffs. A battery can potentially be charged using lower-cost grid electricity at certain times and that stored energy used later when it is more valuable to the business.
Potentially, but backup is not automatic with every battery installation. If resilience during a power cut is important to your business, it needs to be discussed at the design stage so that suitable equipment and system architecture can be considered.
Where an application or approval is required, Phase Energy manages the relevant DNO process. If an export limit or other grid condition affects the proposed system, we will explain the implications and incorporate them into the design.
Yes. Where an application or approval is required, Phase Energy manages the relevant DNO process. If an export limit or other grid condition affects the proposed system, we will explain the implications and incorporate them into the design.
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.