For Organisations

Commercial Battery Energy Storage (BESS)

Experts in Renewable Energy

Battery Energy Storage Systems (BESS) store excess power from renewable energy sources (eg solar PV panels) or cheap off-peak electricity for later use.

Commercial battery storage units are usually fitted with power management systems that are set to charge at certain times or when surplus energy is generated. These systems are designed to be integrated with (and maximise) renewables and existing supplies. Battery storage gives businesses much more control over their energy usage and management.

You can use commercial battery storage to save money in a number of ways:

Reduce bills and operational costs by ‘peak shaving‘. This means charging during cheaper off-peak hours when tariffs are low, then discharging electricity when prices are highest.
Reduce energy ‘demand charges‘, i.e. the fees charged by many commercial tariffs during high usage periods.
Manage your energy more effectively by ‘load shifting‘; spreading the electricity used for high-power activities (e.g. machinery) throughout the day
Protect against wholesale energy price rises and market volatility with a more secure supply. This can also provide back-up support and resilience during power outages.
Manage long-term financial planning better as energy usage is more predictable.
Generate new revenue and be paid to reduce or increase energy use via Demand-Side Response (DSR) schemes, or by selling stored electricity back to the grid.

Commercial battery storage systems are connected to the National Grid but operate independently. They’re an ideal solution to provide extra capacity, resilience, and back-up power in the event of outages, securing your future supply in a volatile energy market.

We can help your organisation choose the right system for your requirements, whether that’s large-scale industrial or smaller systems for SMEs. Our expert team can help at every step, including planning permissions, grid connection applications, installation and maintenance.

Contact our energy consultant for a free assessment and guidance.

How does it work?

Step 1

Contact us to discuss your requirements – we will discuss your current energy usage, systems, and tariffs, budget, timescales, and any low-carbon goals.

Step 2

We will visit your property to assess its suitability for various options – size, access, age, insulation, number of/proximity to other properties, and your existing systems will all influence our recommendation. We will also advise and assist with any relevant applications for government grant funding or to eg UK Power Networks/National Grid if required.

Step 3

Once a solution has been agreed, we will arrange an installation date and timescale at your convenience. Depending on the system you have chosen, we will advise on any preparation required – typically this is minimal.

Step 4

Once the system has been installed and tested, we will walk you through the controls and give you a thorough handover, along with all operating and maintenance and warranty documents.

Take the Next Step

Speak to one of our Energy Experts

Book a review with our energy consultants

Book a Review with our Energy Consultant

Contact our energy consultant for a free assessment and guidance.

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FAQs for organisations

What financial support is there available for companies that invest in renewable technologies?

The UK funding landscape has moved away from broad national grant schemes. Most funding is now delivered through a mix of targeted grants, regional programs and private finance.

The National Wealth Fund offers £27.8 billion for transformational UK projects in the form of loans, guarantees and equity for private sector and local government.

Major lenders now offer a suite of green finance products tailored to sustainability projects, from solar and battery storage to wider energy infrastructure, for example Lloyds Clean Growth Financing, Barclays Green Loans and NatWest Green Loans. These are not standard loans, they are designed to reward sustainable investment, often with lower interest rates, reduced fees and incentives linked to environmental performance:

For those looking to reduce upfront costs, the rise of funded delivery models has been a game changer. Power Purchase Agreements (PPAs) allow businesses to install renewable energy without upfront costs, with a third party taking on the investment, installation and maintenance. In return, the business purchases the electricity generated at a fixed, typically discounted rate. The result is immediate savings, reduced exposure to volatile energy prices and a clear pathway to decarbonisation, without tying up capital.

Tax reliefs and capital allowances can also significantly improve green energy project economics. By allowing businesses to offset investment costs against taxable profits, these mechanisms shorten payback periods and enhance returns.

What financial support is available for individuals that want to invest in renewable energy technologies?

At the grant level, opportunities like the Boiler Upgrade scheme can offer up to £7,500 to upgrade gas or oil boilers to more efficient and lower carbon options: Apply for the Boiler Upgrade Scheme: Overview – GOV.UK.

The Warm Homes Plan will offer free upgrades for low income households and cheap loans via banks to other households to install solar PV, batteries, insulation and heat pumps.

Residential customers can also take advantage of 0% interest Green Additional Borrowing Mortgages offered by banks like NatWest to make energy efficiency improvements to homes: Green Mortgages | Energy Efficient Homes | NatWest

Do ESOS and SECR apply to my firm?

ESOS reporting applies to UK companies and UK operations of overseas groups with 250 or more employees or a turnover over £44 million and a balance sheet over £38 million. Firms that fall into this category need to complete energy audits every four years.

SECR applies to UK companies listed on stock exchanges or those which have two of the following: 250 employees or more, a turnover of over £36 million or a balance sheet over £18 million. These firms must add energy, carbon and efficiency disclosures to their annual report, report their greenhouse gas emissions, include an energy intensity metric and describe energy efficiency actions they are taking.

Barton Knight Energy is committed to the highest standards of quality, safety and compliance across all our projects.

As an NICEIC Approved Contractor, we are regulated by the UK’s leading voluntary register of electrical businesses, with our work independently assessed against rigorous technical standards. We are also a Constructionline Gold accredited contractor, meeting enhanced PAS 91 requirements and validated as ‘Deemed to Satisfy’ under SSIP, including compliance with the Common Assessment Standard (CAS).

Our membership of the Electrical Contractors Association, and Safe Contractor Approval further demonstrates our commitment to safe, ethical and financially robust operations.

In addition, we hold a range of specialist renewable energy accreditations. These include MCS certification for small-scale technologies such as solar PV, battery storage and heat pumps, as well as membership of the Renewable Energy Consumer Code (RECC). We are also proud to be a Trusted Partner of Octopus Energy, reflecting our expertise in delivering high-quality, future-focused energy solutions.