For businesses looking to reduce energy costs, improve efficiency and invest in more sustainable infrastructure, the initial capital cost can be one of the biggest barriers.

A commercial solar installation could require tens or hundreds of thousands of pounds.

A biomass boiler, wind turbine or air source heat pump can represent another significant investment.

Then there are improvements such as LED lighting, insulation, heating systems, battery storage, EV charging points and wider energy-efficiency renovations.

The potential long-term benefits may be attractive, but many businesses understandably don’t want to remove a substantial amount of cash from their bank account to fund the project.

That’s where Green Business Finance can potentially help.

At Principal Business Finance, we can explore our panel of commercial lenders and help businesses arrange finance for eligible renewable energy, energy-efficiency and sustainability projects, allowing the cost of investment to be spread rather than necessarily funded entirely from existing cash.

What Is Green Business Finance?

Green Finance is a broad term covering funding used for investments designed to improve energy efficiency, reduce emissions or support more sustainable business operations.

Depending on the business and project, this could include funding for:

• Commercial Solar Panels
• Wind Turbines
• Biomass Boilers
• Air Source Heat Pumps
• Ground Source Heat Pumps
• Battery Energy Storage
• LED Lighting
• EV Charging Infrastructure
• Building Insulation
• Heating & Ventilation Upgrades
• Energy-Efficient Machinery
• Building Management Systems
• Energy-Efficiency Renovations
• Electric Vehicles & Commercial EVs
• Other renewable energy technology

The appropriate finance structure will depend on the equipment, project cost, business and lender.

Why Are Businesses Investing in Energy Efficiency?

Environmental considerations are clearly part of the picture, but there is also a straightforward commercial reason:

Energy is a business cost.

Manufacturers, warehouses, farms, hotels, care homes, restaurants, offices and many other businesses can consume substantial amounts of electricity and heating.

Reducing that consumption — or generating some of the required energy on-site — can potentially reduce exposure to future energy costs.

For some businesses, investing in green technology can therefore be viewed in much the same way as investing in new machinery.

The question becomes:

What does the investment cost, and what could it save or generate over its useful life?

Commercial Solar Panel Finance

Solar Panel Finance is likely to be relevant to a particularly broad range of UK businesses.

Consider businesses operating from:

• Warehouses
• Factories
• Agricultural buildings
• Hotels
• Offices
• Retail units
• Care facilities
• Distribution centres
• Workshops
• Leisure facilities

Many have substantial roof areas and significant daytime electricity requirements.

Rather than purchasing all of their electricity from the grid, installing commercial solar panels could allow the business to generate part of its own electricity.

For example, imagine a company is considering a:

£150,000 commercial solar installation.

The business might have enough cash to pay for it outright.

But removing £150,000 from the bank could reduce the capital available for:

Payroll. Stock. Marketing. Machinery. Vehicles. Expansion. Working capital.

Commercial finance could potentially allow the business to spread the capital cost while beginning to benefit from the installation.

Financing Solar Panels Rather Than Paying Cash

This is where the commercial calculation becomes interesting.

Imagine a company has:

£300,000 in available cash

and wants to install:

£150,000 of solar equipment.

Paying cash immediately reduces its reserves by 50%.

Financing the project could potentially allow the company to retain considerably more of that liquidity.

There is, of course, a cost associated with borrowing.

Businesses should therefore consider the financing cost alongside the expected energy savings, lifespan of the equipment and wider commercial benefits.

Wind Turbine Finance

For suitable locations, wind turbines can provide another route to renewable energy generation.

This may be particularly relevant to:

• Farms
• Agricultural businesses
• Rural estates
• Industrial sites
• Businesses with substantial land
• Certain manufacturing operations

Projects can vary considerably in scale.

The total requirement may include more than the turbine itself, with costs potentially associated with installation, groundwork, electrical infrastructure and related works.

Depending on the project and lender appetite, Asset Finance, Business Loans or secured funding could potentially be considered.

Biomass Boiler Finance

Biomass boilers can provide an alternative heating solution for suitable commercial operations.

Potential users might include:

• Farms
• Hotels
• Manufacturing businesses
• Rural estates
• Leisure businesses
• Warehouses
• Commercial premises

A biomass installation can involve expenditure on the boiler itself alongside storage, handling and installation infrastructure.

Rather than committing a large amount of capital upfront, suitable commercial finance could potentially allow the cost to be spread over an agreed period.

Air Source Heat Pump Finance

Air Source Heat Pumps have become another important part of the transition towards lower-carbon heating.

Commercial applications can range from offices and hospitality premises to retail, healthcare and other suitable buildings.

The investment may involve:

• Heat pump units
• Installation
• Heating system modifications
• Controls
• Electrical work
• Associated building works

For larger commercial properties, the total project cost can become substantial.

Funding could potentially allow the business to complete the upgrade while retaining more cash for its core operations.

Ground Source Heat Pumps

Some businesses may instead consider Ground Source Heat Pumps.

These projects can require significant groundwork and infrastructure in addition to the heating equipment.

This can make the initial investment larger than simply replacing a conventional boiler.

However, for suitable sites with long-term occupancy plans, the investment may form part of a much broader strategy to improve building efficiency.

The funding structure may therefore need to consider both the equipment and the associated installation works.

Battery Storage Finance

Renewable generation and battery energy storage can increasingly form part of the same project.

A business installing solar panels may also consider battery storage so that electricity generated at one point in the day can potentially be used later.

Battery systems can represent a significant additional capital cost.

Depending on the equipment and lender, eligible battery technology could potentially be incorporated into a broader Asset Finance or Green Finance package.

EV Charging Infrastructure

The move towards electric vehicles creates another investment requirement for businesses.

A company might need charging infrastructure for:

• Company cars
• Commercial EVs
• Employee vehicles
• Customer vehicles
• Delivery fleets
• Logistics operations

A hotel, retail park or leisure business might also install chargers as part of its customer offering.

HMRC currently provides a 100% first-year capital allowance for qualifying new and unused electric vehicle charging-point equipment purchased before April 2027. Tax eligibility depends on the circumstances and businesses should confirm the treatment with their accountant or tax professional.

Energy-Efficient Lighting

Not every green investment needs to involve a six-figure renewable energy project.

For a large:

Warehouse

Factory

Office

Retail operation

or:

Distribution centre

replacing older lighting with modern energy-efficient alternatives could potentially reduce electricity consumption.

A large-scale LED lighting upgrade may include thousands of individual fittings alongside controls, sensors and installation.

Rather than funding the entire project from cash, commercial finance may potentially allow the cost to be spread.

Energy-Efficiency Renovations

Businesses can also look beyond individual pieces of equipment.

A commercial property might require a broader programme of improvements, such as:

• Insulation
• Heating upgrades
• Lighting
• Ventilation
• Solar panels
• Smart controls
• Building management systems
• Windows and doors
• Electrical infrastructure
• Renewable energy generation

These projects can potentially improve the overall efficiency of the property rather than addressing one specific energy cost.

The appropriate funding could involve a combination of Asset Finance, Business Loans, secured lending or Commercial Mortgage funding, depending on what is being financed.

Energy-Efficient Machinery

Green investment isn’t limited to buildings.

A manufacturer replacing older machinery with modern equipment may find that the new machinery:

Produces more.

Uses less electricity.

Creates less waste.

Requires less maintenance.

In that situation, Asset Finance can potentially help fund the equipment while the company retains more working capital.

The commercial benefit isn’t simply that the machine is “greener”.

It may also be more productive and cheaper to operate.

Financing Multiple Improvements Together

A business may decide that making one improvement at a time isn’t sufficient.

Imagine a manufacturer planning:

£200,000 solar installation

£100,000 energy-efficient machinery

£50,000 LED lighting and controls

£50,000 battery storage

The total project becomes:

£400,000.

Rather than treating the entire £400,000 as one generic borrowing requirement, the project can potentially be separated into its component parts.

Eligible equipment could potentially be considered for Asset Finance, while other project expenditure might be supported through a Business Loan or secured facility.

This can create a funding structure more closely aligned with what the money is actually purchasing.

Asset Finance for Green Equipment

Asset Finance can potentially be particularly relevant where a business is purchasing identifiable equipment.

Depending on the asset and lender, this could include eligible:

• Renewable energy equipment
• Solar technology
• Heating equipment
• Battery systems
• Energy-efficient machinery
• EV charging equipment
• Commercial electric vehicles

Rather than paying the full purchase price upfront, the cost is spread over an agreed term.

This can help preserve working capital for the company’s day-to-day activities.

Hire Purchase

Hire Purchase may be available for certain eligible green assets.

Typically, the business contributes a deposit and the lender funds the remaining purchase cost.

Regular repayments are then made over an agreed period, with ownership transferring subject to the terms of the agreement and completion of the required payments.

For businesses that ultimately want to own the equipment, this can potentially provide a straightforward way to fund capital investment.

Business Loans for Green Projects

Not every part of an energy-efficiency project is necessarily suitable for Asset Finance.

There could be:

Installation costs.

Groundworks.

Building modifications.

Professional costs.

Electrical works.

A Business Loan could potentially provide greater flexibility where the project includes expenditure beyond individual financeable assets.

This can also be useful where several improvements are being completed simultaneously.

Secured Finance for Larger Projects

For substantial renewable energy or building-improvement projects, a business may need a larger facility.

Where suitable commercial or residential property security is available, Secured Business Finance could potentially provide another option.

This may allow larger amounts or longer repayment periods than some unsecured products, depending on the lender and circumstances.

Commercial Mortgage Funding

Energy-efficiency improvements may also form part of a wider commercial property transaction.

A company purchasing a factory, warehouse, office or other commercial building might plan significant improvements immediately after acquisition.

Where appropriate, the overall property and investment requirement could potentially be considered alongside Commercial Mortgage or property-backed funding.

Green Finance for Agriculture

Agricultural businesses can be particularly well positioned to consider renewable energy investment.

Farms may have:

• Large roof areas
• Land
• High electricity consumption
• Heating requirements
• Energy-intensive equipment

Potential projects could include:

Solar panels

Wind turbines

Biomass systems

Battery storage

Heat pumps

Energy-efficient machinery

Finance can potentially allow agricultural businesses to make those investments while retaining cash for machinery, livestock, feed, seed, fertiliser, fuel and seasonal working capital.

Green Finance for Manufacturing

Manufacturing can be another particularly relevant sector.

Factories may have significant energy requirements from:

• Machinery
• Heating
• Lighting
• Ventilation
• Compressed air
• Refrigeration
• Production processes

A manufacturer could potentially combine renewable generation with more efficient production equipment.

The result could be a business that produces more while requiring less energy per unit of output.

Hospitality and Leisure

Hotels, restaurants, gyms and leisure facilities can also have significant energy consumption.

Heating, hot water, kitchens, refrigeration, lighting and air conditioning can all contribute to operating costs.

Potential investments could include:

• Solar panels
• Heat pumps
• Energy-efficient kitchen equipment
• LED lighting
• Smart heating controls
• Insulation
• EV charging

Financing these improvements can potentially allow the business to invest without diverting all available cash away from refurbishment, recruitment and day-to-day operations.

Warehouses and Distribution Centres

Large commercial roofs can create opportunities for solar installations, while lighting and heating can also represent significant costs.

A warehouse operator could potentially invest in:

Commercial solar panels + LED lighting + battery storage + EV charging infrastructure.

For logistics companies transitioning parts of their fleet towards electric vehicles, the charging infrastructure itself may become another capital requirement.

Can Green Investments Qualify for Capital Allowances?

Potentially.

HMRC states that businesses can claim capital allowances when they buy qualifying energy-efficient or low/zero-carbon technology. Capital allowances reduce taxable profits rather than providing a cash grant.

The specific treatment depends on the asset and business.

The Annual Investment Allowance (AIA) currently allows qualifying businesses to deduct the full value of most eligible plant and machinery, up to a £1 million annual limit.

Solar panels are specifically treated as special-rate assets for capital allowance purposes. HMRC’s current guidance also includes heating systems, electrical systems and certain other building-integral features within the special-rate category.

Tax rules can be complex and the appropriate treatment depends on the transaction, so businesses should confirm the position with their accountant or tax professional.

Finance Can Potentially Work Alongside Tax Relief

An important distinction is that financing an asset does not necessarily mean the business has to wait until the finance agreement is repaid before considering capital allowances.

For example, HMRC states that where qualifying equipment is acquired under Hire Purchase, eligible capital allowance claims can potentially be based on the qualifying cost when the business starts using the equipment, subject to the applicable rules; interest is not included in that qualifying cost.

This means businesses should consider:

How the asset is financed

alongside:

How the investment is treated for tax purposes.

Principal Business Finance can arrange the commercial funding, while the company’s accountant or tax professional can confirm the appropriate tax treatment.

Don’t Focus Only on the Monthly Payment

When assessing a green investment, the finance payment is only one side of the calculation.

Businesses should also consider:

• Current energy expenditure
• Expected energy savings
• Maintenance
• Equipment lifespan
• Installation costs
• Finance costs
• Available tax allowances
• Potential grants or incentives
• Residual value
• Operational benefits

For example, a project costing £200,000 shouldn’t simply be viewed as:

“How much does £200,000 cost to finance?”

The wider commercial question is:

“What does the £200,000 investment potentially save or generate for the business over its useful life?”

Why Finance Instead of Paying Cash?

Suppose a profitable company has:

£500,000 available in the bank.

It wants to complete a:

£250,000 renewable energy and efficiency project.

Paying cash reduces available liquidity by 50%.

That £250,000 can no longer be used for:

• Stock
• Recruitment
• Machinery
• Acquisitions
• Marketing
• Working capital
• Unexpected expenditure

Financing some or all of the eligible project can potentially allow the company to make the investment while retaining more cash within the business.

Naturally, finance has a cost, so the total commercial benefit should be considered.

What Might a Green Finance Lender Want to See?

Requirements vary depending on the project and lender, but information could include:

• Latest annual accounts
• Management accounts
• Business bank statements
• Existing borrowing
• Equipment quotations
• Supplier information
• Installation costs
• Property ownership or lease details
• Energy usage
• Expected savings or generation
• Project specification
• Planning or permissions where relevant
• Amount required
• Deposit contribution
• Proposed finance term

For renewable generation projects, lenders may also want to understand the site and how the technology will be used.

How Principal Business Finance Can Help

At Principal Business Finance, we work with a wide panel of commercial lenders and can help UK businesses explore funding for renewable energy and energy-efficiency investment.

Depending on the project, we can potentially arrange:

Green Asset Finance

For eligible renewable energy equipment, machinery and technology.

Hire Purchase

Allowing businesses to spread the cost of suitable equipment over an agreed term.

Business Loans

For broader projects including installation and associated costs.

Secured Business Loans

For larger investments where appropriate security is available.

Commercial Mortgages

Where energy-efficiency investment forms part of a wider commercial property requirement.

Vehicle Finance

For electric company vehicles and eligible commercial EVs.

The starting point is understanding what the business wants to install, what the total project will cost and what commercial benefit it is expected to deliver.

Invest in the Business Without Draining Its Cash

Green investment doesn’t have to be viewed simply as an environmental expense.

For many businesses, it can be an investment in:

Lower operating costs.

More efficient equipment.

Modern infrastructure.

Greater energy independence.

Reduced exposure to energy prices.

And the long-term value of the business and its premises.

Whether you’re considering commercial solar panels, wind turbines, biomass boilers, air source heat pumps, battery storage, EV charging, LED lighting or a wider energy-efficiency renovation, the upfront cost does not necessarily have to be funded entirely from cash.

At Principal Business Finance, we can explore our commercial lender panel and help structure finance around eligible green and energy-efficiency investments.

If your business is planning a renewable energy or energy-efficiency project, contact Principal Business Finance to discuss the project and explore the commercial finance options that may be available. Contact us on 01604217998, email info@principalbusinessfinance.co.uk, or enquire here.

All finance is subject to application, status, lender criteria and approval. Potential energy savings are project-specific and are not guaranteed. Tax treatment depends on the asset and circumstances and should be confirmed with a suitably qualified accountant or tax professional.