Solar PPA funding UK
Commercial solar without the upfront capital spend.
A solar power purchase agreement allows suitable UK businesses to use on-site solar electricity without buying the system outright. 3Phase helps assess whether a commercial solar PPA is commercially viable before a funded proposal is put forward.
Funded solar route
Lower energy costs without tying up working capital.
Solar PPA funding is designed for businesses that want the benefit of commercial solar but do not want to commit capital to the installation. Under a power purchase agreement, the funded system is installed on a suitable roof or site and the business buys the generated electricity at an agreed rate.
The strongest PPA projects usually have high daytime electricity use, a suitable roof, clear site control and a demand profile that can use a meaningful share of the solar generation on site. The proposal should be transparent about assumptions, responsibilities, contract length and expected savings.
Funded solar route
Solar PPA At A Glance
A solar PPA UK proposal should help finance directors, managing directors, operations managers and property owners understand whether funded solar is commercially suitable before committing to a long-term agreement.
Protect working capital
Power purchase agreement solar model
Predictable commercial pricing route
Commercial solar funding for UK sites
Suitability
Is Your Business Suitable For A Solar PPA?
Solar PPA funding works best where the site can use a meaningful share of generated electricity during operating hours. The commercial case depends on demand, roof condition, site control and the proposed agreement terms.
High daytime electricity demand across normal operating hours.
Suitable roof space, structure, access and electrical infrastructure.
Long-term occupancy, ownership or landlord consent.
Clear appetite to preserve capital while reducing imported electricity.
Available electricity data, ideally half-hourly consumption data.
Future plans for battery storage, EV charging or commercial EV charging.
Funding comparison
Solar PPA vs Buying Solar
A commercial solar PPA is one funding route. It should be compared against buying the system outright or using asset finance so the business can choose the model that fits cash flow, ownership preference and site plans.
How the model works
The business case comes before the installation.
Assess the site
We review electricity spend, half-hourly electricity data, roof suitability, access, constraints and likely on-site solar usage.
Model the PPA
The proposal should show the PPA rate, indicative savings, system size, responsibilities and the assumptions behind the commercial case.
Install and operate
If viable, the system is delivered and maintained while the business buys the generated electricity under the agreed power purchase agreement.
Decision-maker clarity
A commercial solar PPA should be easy to scrutinise.
For finance directors and business owners, the detail matters. A credible solar PPA proposal should explain how savings are calculated, what happens if consumption changes, who owns and maintains the asset, how roof access is managed and what the business is agreeing to over the contract term.
3Phase keeps the conversation practical: site suitability first, then the funding route. If a PPA is not the strongest option, the assessment can compare capital purchase or staged energy infrastructure instead.
Commercial outcomes
Why Businesses Choose Solar PPA
Preserve capital
Use funded solar without tying up working capital that may be needed elsewhere in the business.
Support cash flow
Compare a predictable PPA rate against imported electricity costs and contract exposure.
Reduce price exposure
Create a long-term route for on-site solar electricity where the site is suitable.
Plan infrastructure
Consider future battery storage, commercial EV charging and commercial EV charging demand.
Storage and future demand
Solar PPA and Battery Storage
Battery storage can be considered alongside a commercial solar PPA where the site has the right demand profile, peak periods or future infrastructure plans. The aim is not to add equipment for the sake of it. The aim is to check whether storage improves energy resilience, self-consumption or commercial control.
For businesses planning workplace charging, fleet charging or commercial EV charging, solar PPA funding should be reviewed as part of a wider site energy strategy. Future demand can change the way a solar system should be sized and modelled.
Why 3Phase
Why Work With 3Phase
3Phase helps UK businesses review commercial solar funding with a practical focus on site suitability, cash flow, operational impact and long-term infrastructure planning.
Commercial-first advice
We start with demand, building suitability and the business case rather than panel count.
Funding route clarity
We help compare Solar PPA, capital purchase and asset finance options clearly.
Infrastructure view
Solar, battery storage and EV charging are considered as part of the wider energy plan.
UK-wide delivery
3Phase supports commercial energy assessments for single-site and multi-site businesses.
Solar PPA FAQs
Common questions about commercial solar PPA funding.
What is a solar PPA?
A solar PPA is a power purchase agreement for solar electricity. A funded system is installed on a suitable business site and the business buys the electricity generated under agreed terms.
Is a solar PPA really zero upfront cost?
For qualifying sites, solar PPA funding can avoid upfront capital from the business. Suitability depends on electricity demand, roof quality, site control and the commercial model.
Who owns the solar panels in a PPA?
The funded system is typically owned by the funder or asset owner during the agreement. The business uses the generated electricity and pays under the agreed PPA terms.
What makes a business suitable for PPA funding?
High daytime consumption, clear site control, good roof conditions and predictable electricity demand usually improve viability. Half-hourly data helps model the opportunity more accurately.
How is the PPA electricity rate set?
The rate depends on the site, system size, expected generation, contract term, funding assumptions and commercial risk. A proposal should show how the rate has been calculated.
Is a Solar PPA better than buying solar panels?
Not always. Buying may suit businesses with available capital and long-term ownership plans. A commercial solar PPA may suit businesses that want funded solar and capital preservation.
Can a leased building use solar PPA funding?
Potentially, but landlord consent, lease length, roof responsibilities and access rights need to be reviewed before a funded solar proposal can progress.
Can battery storage be included with a solar PPA?
Battery storage can be considered where it improves the business case, resilience or self-consumption. It should be modelled against demand rather than added automatically.
Can EV charging be integrated with a solar PPA?
Yes, where future charging demand is included in the site energy plan. Commercial EV charging and commercial EV charging can change how the solar proposal should be sized.
What happens if business electricity use changes?
The proposal should explain the assumptions around consumption, self-use and contract exposure. Material changes in use should be discussed before committing to a PPA.
Who maintains the system?
Maintenance is usually handled as part of the funded agreement, but responsibilities should be confirmed in the contract before signing.
Can a PPA support carbon reduction reporting?
On-site generation can support carbon reduction and ESG reporting, but the proposal should explain generation assumptions clearly and avoid overstating environmental outcomes.
Solar PPA Assessment Tool
Check whether a funded solar route may fit.
This tool helps identify whether Solar PPA funding is worth exploring before a full commercial review. PPA suitability depends on demand, roof space, ownership, contract terms and site risk.
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