A south-facing roof is helpful, but it is not the whole answer. For homeowners and businesses in Cannock, knowing how to assess solar suitability means looking beyond the roof to your daytime electricity use, existing wiring, shading and future plans. A carefully planned system can reduce grid purchases for many years. A poorly matched one can disappoint, even if the panels themselves are good.
The right starting point is a property survey. This allows an installer to establish what your building can generate, when you are most likely to use that energy, and whether solar PV, battery storage or both are the sensible investment.
How to assess solar suitability before requesting quotes
You do not need to be an expert to make a useful first assessment. Start by considering your roof, your bills and the way the building is used. Then use a survey to confirm the details that cannot be judged reliably from the ground.
Check roof space, direction and condition
Solar panels need a clear, usable section of roof. South-facing roofs often produce the highest annual output, but east- and west-facing arrays can be very worthwhile. An east-west layout can spread generation across the morning and afternoon, which may suit a household where people are out during the middle of the day, or a business with activity from opening to closing time.
Roof pitch affects output, although it is rarely a simple pass-or-fail issue. Modern design software can model expected generation for the roof angle and orientation rather than relying on rules of thumb. Flat roofs can also accommodate panels using purpose-designed mounting systems, provided the structure and wind loading are suitable.
The roof needs to be in sound condition. If it is nearing the point where tiles, felt or flat-roof coverings need substantial work, completing that work first is usually the better long-term decision. Removing and reinstating panels for future roofing repairs adds avoidable cost and disruption.
Look honestly at shading
Chimneys, dormers, neighbouring buildings, mature trees and roof-mounted equipment can all cast shade. Shade does not automatically rule out solar, but it needs to be measured and allowed for in the design. A small shadow moving across a panel can reduce the output of part of an array, depending on the equipment selected and how the system is configured.
This matters particularly in established areas of Cannock, Hednesford and Rugeley, where trees and varied rooflines are common. A proper survey considers seasonal changes too. A tree that is bare in winter may shade a roof significantly once it is in leaf.
Avoid accepting a generation figure that has not accounted for visible obstructions. An honest assessment explains where losses may occur and whether a different panel layout, optimisers or another solution would offer better value.
Compare generation with how you use electricity
Solar generation has greatest value when you use it at the time it is produced. Review a full year’s electricity bills if possible, rather than only looking at one winter bill. Your annual consumption provides a starting point, but the daily pattern is equally important.
A home where someone works from home, uses appliances during the day or has a heat pump may use more solar directly than a home empty from morning until evening. For a commercial property, daytime operations can make solar particularly attractive because electricity demand often coincides with generation.
It is also worth considering plans that could change demand. An electric vehicle, heat pump, electric cooking or an extension can all alter the case for solar. An EV charging installation starts from £950 + VAT, but its charging pattern should be included in the solar design rather than treated as an afterthought.
Is your electrical installation ready for solar?
Solar PV connects to your electrical installation, so the condition and capacity of that installation matter. The survey should include the consumer unit, earthing arrangements, available ways, cable routes and the incoming supply. This is not paperwork for its own sake. It helps ensure the installation is safe, compliant and capable of supporting the proposed equipment.
An older consumer unit does not always prevent a solar installation, but it may make additional work necessary. If replacement is the right route, consumer unit replacement is priced on a quote. The appropriate solution depends on the condition of the existing installation and the design of the solar system, not simply its age.
For landlords and businesses, an up-to-date Electrical Installation Condition Report can also provide useful clarity before a larger energy project. Domestic EICRs start from £220 + VAT, while commercial EICRs start from £150 + VAT per distribution board. Where defects are found, addressing them before or alongside solar work prevents the new system being connected to an installation that needs attention.
Businesses with several distribution boards, machinery or more complex loads need an assessment that reflects those realities. Our commercial electrician services cover the wider electrical work that may be needed to support a safe, practical solar project.
Decide whether a battery is likely to earn its place
A battery stores surplus solar energy for use later, such as in the evening when household demand rises and panels are no longer generating. It can increase self-consumption and reduce reliance on imported electricity, but it is not automatically the best choice for every property.
If your building has strong daytime use, much of the solar output may be used immediately, so the benefit of a battery may be lower. If demand is mainly after work or overnight, storage can be more valuable. Tariffs, export payments, expected consumption and battery capacity all affect the calculation.
Battery storage should be sized around realistic behaviour. A very large battery is not necessarily better if it is routinely underused. Equally, a small battery may fill early and leave surplus energy to export. A good proposal sets out the expected role of the battery in plain English, including its limitations during winter and its ability, or otherwise, to provide backup power during a grid outage.
Planning, permissions and practical access
Many domestic solar installations can proceed without a planning application, but there are exceptions. Listed buildings, conservation areas, unusual roof designs and ground-mounted systems may require additional checks. Commercial premises can have different considerations, especially where panels affect the appearance of the building or roof access arrangements.
If you lease a property, obtain the landlord’s written permission before committing to the project. Businesses should also consider roof warranties, structural responsibility and access for future maintenance. For shared roofs or blocks of flats, the legal and management arrangements need resolving early.
Installation access affects both safety and cost. Scaffolding, safe cable routes, inverter location and space for batteries all need planning. The inverter is typically placed where it can be accessed for inspection and where ventilation and cable runs are suitable. A battery may need a garage, utility room or other suitable location, subject to the manufacturer’s requirements.
What a reliable solar survey should give you
A professional survey should leave you with more than a panel count and a headline saving. You should understand the proposed array size, expected annual generation, roof layout, likely shading effect, battery option, electrical work required and the assumptions behind the figures.
Ask how the system has been sized, what happens to surplus generation, whether export arrangements are included, and what testing and commissioning will be completed. It is reasonable to ask what is excluded from the price too. Clear answers at survey stage reduce surprises once work is booked.
This approach is useful across Burntwood, Lichfield, Walsall, Stafford, Penkridge, Great Wyrley, Cheslyn Hay and Wolverhampton WV9/WV10. Buildings and energy habits differ, so a tailored design is more valuable than a standard package offered without a meaningful inspection.
For a fuller view of panel and storage options, see our solar systems service. The aim is not to fit the biggest system possible. It is to design an installation that suits the property, your budget and how you want to use electricity over the coming years.
Need this doing in Cannock or nearby?
Ashware Electrical Ltd is NAPIT-registered and based in Cannock, Staffordshire. We are rated 5.0 from 39 customer reviews, and there is no call-out charge for a quote. Call 01543 399 196, WhatsApp 07588 506486, or contact us to arrange a survey. A clear assessment now gives you the confidence to invest when the system is genuinely right for your property.