A solar quote should tell you more than the price of panels. It should show what can realistically fit on your roof, how much electricity you may generate, where your savings could come from and who will be responsible for the work. Knowing how to request solar quotes properly means you can compare like for like, avoid vague estimates and make a decision you feel comfortable with.
For most homeowners and business owners, the best starting point is to request several quotes from vetted local installers rather than relying on the first price that lands in your inbox. Solar is a long-term investment, so a little preparation now can make the comparison much clearer.
Start with the details installers need
You do not need to become a solar expert before asking for prices. However, installers can give more useful initial guidance when they have a clear picture of your property and energy use.
Start with your postcode, property type and whether you own the building. A typical semi-detached home, a terraced house, a flat with shared roof space and a commercial unit can all involve different planning, access and installation considerations. If your property is listed, in a conservation area, has a thatched roof or has unusual roof construction, mention this early too.
Your recent electricity usage is equally useful. An annual figure from your energy bill is ideal, but a monthly estimate is still helpful. High daytime use, electric heating, an EV charger, a heat pump or plans to work from home can all affect the right system size. A household that is empty all day may benefit from a different battery approach than one using electricity throughout the afternoon and evening.
Photos can speed things up. A clear picture of the roof from ground level, the electricity meter and consumer unit, plus any obvious shading from trees, chimneys or neighbouring buildings, gives an installer a stronger starting point. They may still need a site survey before providing a final fixed quotation, but good information reduces guesswork.
How to request solar quotes that are easy to compare
Ask for up to three or four quotes where possible. One quote can give you a starting price, but it cannot show whether the proposed system, workmanship and aftercare represent good value. Too many quotes, on the other hand, can become difficult to manage and may lead to comparison fatigue.
A trusted matching service such as Solar Planet can simplify this stage by connecting you with local MCS-accredited installers. This removes much of the time involved in researching firms individually while still giving you a choice of proposals.
When you make your request, explain what matters most to you. You may be looking for the lowest sensible upfront cost, maximum generation from a limited roof, a battery-ready system, stronger backup capability, or a solution designed around EV charging. There is no single best solar package for every property. A good installer should respond to your priorities rather than push the same system for every customer.
It also helps to say whether you are collecting early budget figures or ready to arrange a survey. Early estimates are useful for planning, but a proper survey is where roof measurements, shading, cable routes, scaffolding needs and electrical upgrades can be confirmed.
Ask each installer for the same core information
The easiest way to compare quotations is to ask every installer for the same level of detail. A low headline price can look attractive until you find it excludes scaffolding, monitoring equipment, bird protection, a battery, VAT or electrical work that another quote includes.
Your written quotation should make clear:
- the number, make, model and wattage of the solar panels
- the inverter type and whether it supports a future battery
- battery capacity and usable capacity, if battery storage is included
- predicted annual generation in kilowatt-hours and the assumptions behind it
- all installation costs, including scaffolding, mounting equipment, electrical work and commissioning
- warranty lengths for panels, inverter, battery and workmanship
- expected installation timescale, payment schedule and aftercare arrangements
For a commercial property, ask for the expected impact on site operations as well. Access restrictions, roof condition surveys, health and safety requirements and three-phase electrical supplies can affect both programme and cost. A quote that reflects these realities is more valuable than an optimistic figure that later needs substantial additions.
Look beyond the estimated savings figure
Savings projections are useful, but they are estimates, not guarantees. They depend on weather, system performance, electricity prices, how much of your solar generation you use on site and the export tariff available to you.
Ask the installer to separate expected savings from self-consumption and expected income from exported electricity. This gives you a more honest view of the numbers. If a quote assumes you will use an unusually high proportion of the electricity generated, ask why that assumption is appropriate for your household or business.
Battery storage can increase the amount of solar electricity you use yourself by keeping surplus generation for later. It can be particularly worthwhile for people who are out during sunny hours but use energy in the evening. However, it adds to the upfront cost, and the right battery size depends on your generation, consumption patterns and tariff. Bigger is not always better.
Similarly, premium panels may suit a small or shaded roof where output per square metre matters most. On a large, straightforward roof, a more cost-effective panel may offer better overall value. The right choice depends on your property, not just a brand name or the highest claimed efficiency figure.
Check accreditation, insurance and responsibility
Price matters, but solar installation quality matters for decades. Before accepting a quote, check that the installer is MCS-accredited for the technology they are proposing and that they have appropriate insurance and a clear workmanship warranty. MCS accreditation is an important sign that the installer works to recognised standards and may be relevant to eligibility for certain export arrangements and finance options.
You should also ask who will carry out the work. Some firms sell the system and subcontract the installation, which is not automatically a problem, but responsibility must be clear. Find out who manages the survey, installation, commissioning, certification and any issue after the panels are fitted.
A reputable installer should be comfortable explaining the paperwork you will receive. This commonly includes electrical certification, MCS documentation, product warranties and information needed to apply for export payments. If explanations are rushed, costs are unclear or you are pressured to sign immediately, pause and seek another view.
Use the survey to test the proposal
A site survey is not just a technical appointment. It is your chance to see whether the installer has understood your property and taken your questions seriously.
Ask where panels, inverter, battery and isolators will be positioned. An inverter may make a low operating sound, so location can matter in a quiet utility room or near a bedroom. Check how cables will be routed, whether any roof repairs are advisable before installation and whether the consumer unit has enough capacity. For homes in Cardiff, Newport, Swansea, Bristol and nearby areas, local roof styles and access can vary considerably, so a proper visit is more reliable than a design based only on aerial images.
If shade affects the roof, ask how it has been assessed. Modern optimisers or microinverters can help in some shaded situations, but they add cost and are not necessary for every system. The installer should explain the trade-off in plain English.
Compare the final quotes on value, not pressure
Once you have final proposals, place them side by side and compare system size, expected generation, included equipment, warranties, installer credentials and total cost. Make sure each quote is based on the same assumptions. A 4 kW system with no battery is not directly comparable with a 5 kW system with battery storage and upgraded electrical work.
Be cautious about unusually cheap quotes as well as unusually ambitious savings claims. The lowest price may be perfectly legitimate, but ask what is different. It could reflect simpler roof access, different equipment, a shorter workmanship warranty or exclusions that only become clear later.
You do not need to accept a quote on the day of a survey. Take time to read the documents, ask for clarification and make sure you understand the deposit terms and cancellation policy. A professional installer will respect a considered decision.
The most useful solar quote is one that leaves you clearer, not more confused. Give installers accurate information, ask for transparent written proposals and choose the team that combines a suitable design with accredited workmanship and reliable support. That is how a solar project starts on solid ground.
