Power Purchase Agreement

If you would like to receive the benefits of a solar energy system but would prefer to utilise your capital for other business needs, then Caplor Energy can offer you a Power Purchase Agreement.  This capital-free option will allow your business to enjoy reduced energy costs without any financial outlay.

  • Capital free
  • Transparent paperwork
  • Utilise your  roof space
  • Reduced Opex for your business
  • No installation, operational or monitoring costs
  • Demonstrate your CSR credentials

You may know this as ‘rent a roof’ but we call our fully funded solar panel scheme a ‘Power Purchase Agreement’ and is just another way that Caplor Energy can help ensure we build a sustainable future.

How You Benefit:

Free solar PV system 

Immediate savings on electricity bills

Zero cost ‘green’ credentials

No maintenance or insurance costs

Long term protection against energy markets

Fully transferable

The solar PV system is fully funded by us

Solar electricity you consume is purchased at a cheaper rate than is available from your current energy provider

A zero capital route to improving your company’s environmental responsibility, enhancing relations with green thinking customers, suppliers and staff

We proactively manage the system under a long term operation and maintenance contract, including the provision of insurance cover, all at no cost to you.

The unit price you pay for electricity generated by the solar PV system will only rise in line with RPI, allowing you to budget more effectively.

The PPA can be transferred to new occupants of the property should you move to new premises.

What savings can you expect

Caplor Energy fully funds the entire installation of the solar PV system and you benefit by consuming the discounted solar electricity which is generated. After 25 years, ownership of the system transfers to you and you enjoy free solar electricity for the remaining life of the system (c. 10 years).

Immediate bottom line savings on energy costs and carbon emission reductions

A typical installation* will deliver:

Electricity Bill Savings

Carbon Reductions

Year 1 


88 tonnes CO2e

Over 25 years


4,558 tonnes CO2e

Our Simple Process

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

2. We provide you with a proposal demonstrating the financial savings and carbon reduction forecasts

3. You agree to lease the airspace above your roof to us and enter into a Power Purchase Agreement (PPA)

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

5. You enjoy reduced electricity bills for c.25 years with no maintenance costs and worry-free operation of the system

6. After 25 years, ownership of the system transfers to you to enjoy free solar PV electricity for the remainder of the system life – c. another 10 years

Power Purchase Agreement FAQs

Q: So why is a solar photovoltaic (PV) installation on the rooftop of my building good for business?

A: Because you benefit from electricity at a discounted, index-linked rate for 25 years. You will also prove to your employees, shareholders, customers and other stakeholders that you are committed to carbon reduction, which is good for business. There is no capital outlay which means you get the benefits of solar while directing investment to your core activities.

Q: Is the weather in the UK really suitable for solar PV electricity generation?

A: Yes!  That’s why solar panels are now quite common across the country. The solar irradiance levels in the UK are similar to areas in other countries (e.g. in Germany) where hundreds of thousands of rooftop installations have been successfully completed and are generating electricity for businesses.

Q: What will putting solar PV on my rooftop cost me?

A: Nothing. Caplor will bear all costs for the installation and maintenance of the solar PV system.

Q: Why is there no capital cost to us?

There is no capital cost to the business for the system & installation because instead you are leasing the air space above your building to us, in return we are giving you clean, green electricity at a good rate.

Q: Have you installed solar PV systems before?

A: Yes. Caplor is one of the UK’s pioneers in solar for business providing companies with a source of clean, affordable energy. We only use qualified and certificated contractors that work to the highest quality levels and all of our components are Tier 1.

Q: Who will own the solar PV system?

Caplor Energy and its Investors will own, monitor, manage and maintain the solar PV system that is installed on your roof.

Q: I understand that Caplor Energy and the participating School/Business/Organisation (YOU) enter into a Power Purchase Agreement (PPA); how does this work?

The PPA is an agreement that gives you the right to consume as much green solar energy that the system generates. You pay a discounted tariff per unit of electricity consumed (up to 20% on your current tariff). Agreements run for 25 years before the ownership of the panels is transferred to you – Systems usually last about 40 years.

Q: Who maintains the installation?

A: We do – Caplor and its contractors maintain the installation. You will have no responsibility for the maintenance. We monitor the system remotely and undertake routine site visits to make sure you get maximum benefit.

Q: Are there any grants for solar PV installations?

A: No.

Q: How long will my Power Purchase Agreement last?

A: Our lease agreement with you is for 25 years. After that we will transfer the solar installation to you – it has a predicted life of 40 years.

Q: What happens if my roof gets damaged during installation?

A: Caplor works with highly skilled, professional and trusted contractors. We ensure that all roof installations are of the highest order. In the unlikely event of any damage during installation we put it right straight away at our cost.

Q: Is there a meter to measure my usage?

A: Yes. We meter the energy generated by the solar PV system and the amount of electricity you consume.

Q: Could occupiers of the property, or anything inside, be disturbed by the solar PV installation?

A: No. Caplor will liaise with you on the best day and time to survey the rooftop and install the system. Once installed, there is no disturbance whatsoever. The system does not produce any fumes, electromagnetic radiation or any other harmful emissions. However you may occasionally hear a slight hum from the inverters.

Q: If I want to undertake any building development during the term of the lease, can I?

A: Yes. This will be covered in our lease agreement and we’ll negotiate a solution with you if there is a need to turn the system off. If your development plans do not accommodate the PV system once complete, you may be required to terminate the lease and make the associated compensation payment.

Q: If I want to sell my property during the term of the lease, what happens?

A: The lease remains binding on the next owner who will enjoy the benefits of a solar PV system. If the building is sold for redevelopment or demolition you will be required to pay a “compensation payment” as well as having to buy-out the system at an agreed price from the profits of the sales.

Q: This sounds good, but what is in it for Caplor?

A: The generation of electricity through solar PV is government subsidised. Caplor will receive the subsidies and a fair price from you for the electricity we generate. This pays back the investment made to install the system on your roof.

Q: I cannot see i will be in this building for 25 years, will i have to pay off the whole lease?

This is not uncommon for us. The lease is registered with the land registry, meaning that the lease will transfer to the new owner upon transfer of the title to the premises. The PPA is also transferred to the new owner for them to benefit from.

Q: I am a Commercial landlord and I have tenants in my building. Can I still take advantage of the solar PPA Scheme?

Yes however you will require approval from your tenant beforehand. If you are happy to share the benefits of green, cheap, renewable energy with them there should be little reason for them to object. This may vary for different circumstances.

Q: How much carbon can i expect to offset through installing a solar PV system?

A 50kWp solar PV system in the south of the UK generates enough green energy to off-set approximately 20 tonnes of CO2 each year, that’s equivalent to the average emissions from the electrcity of 12 homes

Q: What happens if i don't use all the electricity the solar PV system generates?

At peak times of generation, if you are producing excess electricity, the excess power is exported to the national grid. Alternatively if you are not producing enough electricity to meet demand electricity will be pulled from the national grid. Depending on the size of the system & electricity demand you should expect to consume most if not all of the electricity produced

Q: How will this system affect my insurance costs and cover?

The system installation shouldn’t affect your insurance at all; however you will need to inform your insurer that you are having the system installed.

Q: What happens if we need to repair our roof during the term of the lease?

If it is entirely necessary for the solar panels to be removed for the repairs then we will remove and reinstall the panels at our own cost. The repair work to the rof is undertaken at your cost unless it has been caused by the PV system itself. In such case we will cover the costs of the repairs.

Q: Will i need to change electricity suppliers?

No. You will continue to pay your current supplier for any electricity your solar PV system cannot provide.

Q: Does my building need to meet certain energy efficient demands?

Normally your building must achieve an Energy Performance Rating of D or higher (not required for system sizes above 250kWp and exceptions apply). If required, we will be able to arrange this for you but the solar PV system we install cannot be included in this assessment.

By 2018 it will be illegal to lease a property with a rating lower than E, so we recommend all property owners start to consider how they can improve the performance of their buildings and a solar PV system may be one such improvement.

Q: Is my roof strong enough for solar panels?

The installed weight of the solar panels is typically between 14-15kg m2 including mounting equipment. To be certain we always undertake a structural survey on every building as part of our process.

Q: Can you fix solar PV panels to any roof?

There are a wide variety of fixing solutions that allow installation of solar PV to most roofs, including flat roofs. Pitched roofs should face between South East and South West and all roofs should be free of shading and structurally sound.

Q: What happens if the system breaks down or develops a fault?

Our remote monitoring equipment will alert us straight away to any faults, it is then our responsibility to get the system running again. To reduce the risk of these issues we only install the best top quality solar panels supported by long term warranties and guarantees

Q: Do i need planning permission?

Planning permission is not usually required to fit solar PV systems below 50kWp, unless you have a listed building, in that scenario planning permission is required. We will be able to confirm whether your building needs planning permission or not.

Q: Do I need to inform Building Control about the installation of a solar PV system?

Yes. We would liaise with Building Control and outline the planned installation in conjunction with the undertaking of a structural survey.

Q: Where can I get more information?

A: We like to meet people so call Alan Warren on 01432 860644 or email alan@caplor.co.uk and discuss the benefits of solar for business.


We are accredited with a number of codes, practises and are also partnered with reputable companies within the renewable energy sector
Fronius Service Partner
Tesla Powerwall
Solar Edge
Chamber Business Awards
Renewable Energy Consumer Code
Solar Trade Association
Farmers Weekly
Advance Solar Installer

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