Why the choice matters more in Chester
Solar is not unusual here. Government statistics count 11,740 solar PV sites in Cheshire West and Chester at the end of 2025, about double the 2019 figure (DESNZ, renewable electricity by local authority). What makes Chester different is the housing: conservation areas, listed buildings, slate roofs on Victorian terraces with chimney stacks, and a large share of flats in the city centre. The work is routine for a firm that plans it properly and awkward for one that does not.
Step 1: three registers, ten minutes
- MCS. Search the MCS installer directory by company name and check that solar PV is listed in its scope (batteries are a separate technology, so check that too if you want one). An MCS certificate for your installation is what allows you to be paid for exported electricity under the Smart Export Guarantee.
- A consumer code. MCS installers must belong to a consumer code approved by the Chartered Trading Standards Institute, such as RECC or HIES. The code sets rules on deposits, contracts and sales conduct, and gives you a route for complaints. Ask which one, and check the firm on that code’s own member list.
- Companies House. Look the firm up on Companies House. How long has it traded? Are its accounts filed on time? Have the directors run companies that closed recently? A young firm can be excellent, but you should know what you are dealing with.
TrustMark registration is a useful further check, and it is required for some government schemes.
Step 2: what a Chester quote should contain
A quote you can compare is specific. Ask for these in writing, and treat their absence as a question to ask, not a reason to panic.
| Item | Why it matters here |
|---|---|
| Panel and inverter make and model, panel count, system size in kWp | Lets you compare like for like and check the price per kW |
| MCS performance estimate for your roof, with the shading allowance | Required before you sign; compare it with our Chester output figures |
| Roof layout drawing | Shows the gap to ridge and chimney, and how the siting condition is met in a conservation area |
| Planning position for your address | Permitted development, a prior-approval decision, or an application; a listed building needs consent |
| Scaffolding, as its own line | Terraces may need scaffold over the pavement; villas need tall scaffold |
| Grid step with SP Energy Networks | G98 notification or a G99 application before fitting a larger system |
| Warranties: panels, inverter, workmanship, and any insurance-backed guarantee | Different parts fail at different ages; the inverter usually goes first |
| Payment stages and deposit | Should follow the consumer code’s limits |
| Handover pack | MCS certificate, electrical certificate, the grid paperwork, manuals: you will need them to claim export payments and when you sell |
Step 3: the Chester questions to ask on the survey
- “Is my house in a conservation area, and is it listed?” A careful installer checks rather than guesses. Roof slopes stay permitted development in a conservation area; walls and balconies facing the road do not, and flat roofs need a prior-approval decision. See conservation areas in Chester.
- “How will you deal with the chimney shade?” On terraces with party-wall stacks, the answer should be a layout, and possibly optimisers, not a shrug.
- “How do you fix to slate?” Natural slate needs the right hooks and replacement slates; ask what happens to broken ones.
- “Will this need a G99 application?” Anything over 3.68 kW on a single-phase supply, or a battery that takes the system over, needs SP Energy Networks’ approval first, which adds weeks. See grid connection.
- “Where would the inverter and isolators go?” In a terrace, loft space and the route of the cables matter.
Red flags
- A price that is only valid today, or pressure to sign on the first visit.
- Panels offered at no cost, or any deal that leaves a company owning equipment on your roof. Ask exactly who owns the system and what happens when you sell.
- A savings figure with no tariff, usage or assumptions behind it, or a payback promise.
- A large deposit before there is a written contract, or a deposit above the consumer code’s limit.
- No MCS certificate offered, or a suggestion that one is not needed.
- Claims of council or government approval. The council’s own group-buy, Switch Together Solar, runs in announced rounds and through its own website; see how it works.
Comparing quotes fairly
Divide each total by its system size to get a price per kW and set it against the government’s 2025/26 figures on our cost page. Then line up the extras: scaffold, optimisers, bird mesh, a battery, an EV charger. The cheapest quote is not always the one with the lowest number on the front; it is the one that includes what your roof needs. Check each firm’s yearly output estimate against the Chester output tables as well: two quotes for the same roof should not be far apart, and if one is, ask why.
If you are stuck between two firms, ask each for the address of a recent installation on a similar Chester house that you can look at from the street. A good installer will usually have one.
Once you have chosen, how a Chester installation works sets out the steps from survey to switch-on, and buying or selling with solar lists the paperwork to keep. Terms such as G99 or prior approval are in the glossary.
About this site. We are a guide, not an installer, and we name no installers. If you want a second opinion on a quote, send us your question; SEO-DONS LTD reads it and answers by email. About this guide explains who we are.