This will depend on numerous factors, but size of the array, the businesses demand for electricity and use profile as well as the cost of buying-in electricity are the major influences on the RoI. Typically, commercial systems will deliver a 4-to-7-year payback.
Frequently Asked Questions: Commercial PV Installations
2. How much do solar panels cost?
No two systems are alike with the size of the array, its location, mounting and ease of access all impacting on the cost of an installation. Following a preliminary assessment of the variables we provide an initial estimate which if acceptable will allow us to undertake a detailed design and compile full quotation.
3. How will we know how much electricity is being generated?
Our systems are capable of recording and providing live information regarding generation across the whole of an installation down to that of individual panels. This allows any faults to be identified promptly and rectified maximising generation at all times.
4. Are there any approvals we require?
Apart from possibly needing planning permission, any solar PV installations that are capable of having a peak export of 3.68kW to the grid (a standard domestic size system), prior approval will be required from the regional District Network Operator (DNO) who will need to assess the size of the mains connection to the property and local electrical off-site infrastructure.
5. Do we need planning permission?
This depends on various matters but in the majority of instances for any non-domestic installation under one megawatt the answer is no, with installations falling within Permitted Development rights. There are various exceptions for planning sensitive properties such as listed buildings and those in conservation areas. For proposed systems in excess of 50kW Prior Approval will be required from the Local planning Authority. The majority of ground mounted systems will require planning permission.
6. We do not work at weekends so will not use all the electricity generated. What happens to this?
Any self-generated electricity that is not consumed by the business can be exported to the grid. This surplus electricity can be sold back to your energy supplier under the Smart Export Guarantee scheme deriving an income.
7. How large a solar system should we be considering?
This usually depends on the electricity demand profile of the business but subject to the availability of roof space and budget.
8. How will solar PV reduce our running costs?
Solar PV panels use the energy from sunlight to generate electricity. This is a free source of energy that the business can use rather than having to use electricity from the grid, bought from your energy provider.
9. Is my property suitable for a solar PV system?
This will depend on various factors including available roof space, its alignment and potential for shading. There are also structural requirements to consider as to whether the building can support the weight and wind loadings of the proposed array. It may be necessary to obtain a surveyor’s or engineer’s report to fully assess this.
10. Can I use Solar PV to power my business?
For businesses using large amounts of electricity solar PV can make a significant reduction to running costs as well as reducing carbon emissions. With options for mounting panels on all types of structures or mounting on land there are few instances where a solar PV array will not be of benefit.