Did you know that Downing funds commercial rooftop solar projects using our Power Purchase Agreement model? This helps our customers achieve their net zero goals without up-front costs

Preserving business capital

What is a Power Purchase Agreement

A Power Purchase Agreement (PPA) is a long-term agreement between an energy generator (such as Downing) and a consumer for the purchase of energy. For our funded commercial rooftop solutions, Downing will fund the entire solar photovoltaic (PV) system including all equipment and installation allowing your business to benefit from on-site fixed-price green energy whilst preserving your business capital.

Commercial considerations

Funded commercial-rooftop benefits

No upfront costs means that opting for a power purchase agreement could generate savings for your business from day one, with these benefits continuing for the full length of the agreement. Once the agreed term ends, ownership of the system transfers to you at no cost and your business can enjoy free solar electricity for the remaining life of the system (c.10 years).

Simple, transparent and hassle-free

How a commercial rooftop Power Purchase Agreement works

1. Assess

We assess the potential of your roof and gather data regarding your current electricity usage and pricing.

2. Proposal

We provide you with a proposal demonstrating the potential financial savings compared to your current agreement and carbon reduction forecasts.

3. Lease Agreement

You agree to lease the airspace above your roof to allow us to install and operate the installation.

4. Installation

We install the solar PV system with minimal disruption to your business.

5. Operation

You enjoy fixed-price electricity bills for 25 years with no maintenance or ongoing operational costs.

6. Ownership

At the end of the term, ownership of the system transfers to you to enjoy free solar PV electricity for the remainder of the system life.


Energy price protection

Our Power Purchase Agreements are inflated in line with the Consumer Price Index and so our clients are protected from long term energy price increases and volatility. We install your solar at zero capital cost to you and you pay for the power consumed at prices locked in for the term of the agreement.

ESG benefits

A positive message

Installing on-site renewable generation is not only a good financial decision it is a way for your business to send a positive message about it’s commitment to fight climate change and a transition to net zero.

  • Technology that brings you closer to zero carbon
  • Long-term financial planning with locked-in rates
  • Expert advice and project management
  • Potential savings with flexible terms
  • Single point of contact with full transparency
  • Partner with an established investment company and renewable energy developer


Why partner with Downing?


Self funded

Downing PPA Solution

Who is responsible for the operation, maintenance, parts-replacement and monitoring?



Who pays for the operation, maintenance, parts-replacement and monitoring?



Who takes the risk on the system performance?



Who takes on the installation cost?



Who’s balance sheet is the debt on?



Power Purchase Agreements FAQs

At the start of each project we will visit the site to meet with you and conduct a detailed feasibility study which will identify the best potential rooftops for solar development.

Our installation programme will prioritise your business operation to ensure that minimal disruption will be caused, it typically takes a period of 2-6 weeks for the site to be complete depending on the agreed site size.

Downing is responsible for the operation and maintenance of the plant throughout the project life-cycle. In the event of a fault we will ensure the appropriate team is in place to rectify the fault returning the plant to full production.

If you move or sell your property there are two options. Either you can novate the agreement with Downing to the new occupant of the property or pay a buyout fee.

As part of the PPA, you only pay for the energy Downing supply. Solar technology is becoming increasingly efficient to continue generating on days where there is little sunlight.

There are various methods of fixing the panels to rooftop spaces including methods where the roof does not require penetration. Following site assessment and detailed design the final fixing method will be decided to best suit the needs of your business operation.

At the end of the PPA agreement, the entire system will be transferred to your business for £1. At this stage the plant will still hold value and be operational for up to 10 years.

No, you can generally start receiving your Solar PV energy immediately alongside your existing connection.

Downing can propose a variety of PPA terms ranging generally from 20 to 30 years in length.