A new EV charger, solar battery or piece of business equipment can look straightforward on paper. The question is whether your existing electrical installation can support it safely. This guide to electrical load surveys is for homeowners, landlords and business owners in Cannock who need clear answers before committing to an electrical upgrade.
An electrical load survey is not paperwork for its own sake. It gives your electrician the information needed to design work properly, avoid overloaded circuits and identify whether upgrades are required before installation begins. It can prevent unexpected cost later and, more importantly, helps ensure the finished installation is safe and compliant.
What is an electrical load survey?
An electrical load survey assesses how much electricity a property currently uses and how much capacity remains for planned additions. Your electrician considers the incoming supply, consumer unit or distribution board, protective devices, existing circuits and the likely demand from appliances and equipment.
It is not simply a matter of adding together every wattage rating in the building. Most homes and workplaces do not run every appliance at full output at the same time. A professional survey applies sensible diversity, looking at realistic use while allowing for periods of high demand.
For a household, that might mean considering an electric shower, induction hob, heat pump, immersion heater, EV charger and battery charging together. For a commercial property, it may involve machinery, kitchen equipment, air conditioning, IT systems, lighting and planned expansion. The aim is to establish what the installation can support without creating an avoidable safety or reliability problem.
When should you arrange a load survey?
A survey is particularly worthwhile before installing solar with battery storage, an EV charge point, electric heating, a hot tub or a significant kitchen upgrade. It also makes sense before converting a garage, extending a property or changing the use of commercial premises.
For landlords, it can be useful when a property is being refurbished or when electrical demand will increase after improvements. For businesses, it should form part of planning when new machinery, additional workstations or vehicle charging are being considered. Waiting until installation day can lead to delays if the consumer unit, cabling or supply is not suitable.
In some cases, a recent Electrical Installation Condition Report can provide useful background. An EICR identifies the condition and safety of the installation, while a load survey focuses on whether it has sufficient capacity for what you want to add. They are related, but they answer different questions.
Domestic EICRs start from £220 + VAT, while commercial EICRs start from £150 + VAT per distribution board. If the installation has not been inspected for some time, arranging both assessments can provide a more reliable basis for decisions.
What happens during an electrical load survey?
The visit begins with a conversation about how you use the property and what you intend to install. A good survey should not start with a standard package. The right design depends on the building, its existing electrical system and your priorities.
Your electrician will usually inspect the incoming electrical supply, meter position, main earthing and bonding arrangements, consumer unit or distribution board, and the condition of visible cabling and circuits. They will identify the rating and available capacity of key equipment, then consider the demand created by existing and proposed loads.
Where solar, a battery or EV charger is planned, the survey also considers cable routes, equipment locations, isolation requirements and practical access. A charger may need a new dedicated circuit. A battery needs a suitable location and a design that works safely with the rest of the installation. Solar generation can reduce grid purchases, but it does not remove the need to assess the electrical system carefully.
For commercial premises, the survey may need to take place outside busy operating hours or be planned around access restrictions. This is where clear communication matters. Work should be designed around the way your business operates, not simply around what is easiest to install.
What could a survey uncover?
Sometimes the result is reassuring: the installation has adequate capacity, the proposed equipment can be connected on a dedicated circuit, and the project can proceed as planned. Other times, the survey identifies work that needs completing first.
A common issue is an older consumer unit that lacks capacity, suitable protective devices or space for new circuits. In that situation, replacement may be the sensible long-term option rather than trying to make an unsuitable board accommodate another major load. Consumer unit replacement starts from £750 + VAT, subject to survey and the condition of the installation.
The survey might also find undersized cabling, unsuitable earthing arrangements, existing defects or a supply that needs further investigation. This does not automatically mean a project cannot go ahead. It means the design needs to account for the issue properly, with remedial work or an alternative approach where appropriate.
For example, an EV charger installation may be possible with load management, which monitors household demand and reduces charging output when the property is drawing heavily from the supply. That can be a practical solution in some homes, but it depends on the wider installation and your charging requirements. EV charger installation starts from £950 + VAT, with the final cost depending on cable route, equipment choice and any required upgrades.
Why capacity matters for solar, batteries and EV charging
Customers often think of solar panels as a straightforward way to generate electricity and a battery as a way to store it. Both can make a valuable difference to how a property uses energy, but their electrical design still matters.
A battery can charge from solar generation, from the grid at chosen times, or both, depending on its settings and system design. An EV charger may add a significant continuous load for several hours. When these systems are combined with electric cooking, heating or showers, the property needs a coordinated design rather than separate installations added over time.
This is one advantage of using a contractor able to look at conventional electrical work and low-carbon technology together. The load survey helps establish whether the consumer unit, supply arrangement and cabling are suitable for the whole plan. It also provides a sensible opportunity to discuss future needs, such as adding a second electric vehicle or expanding battery storage later.
What does an electrical load survey cost?
The cost depends on the property and the level of assessment required. A straightforward domestic survey for a proposed installation may be included within the quotation process, while a more involved commercial assessment or investigation of an older installation may require additional time.
The most useful question is not only the survey fee. It is whether the survey gives you a clear, itemised explanation of what is required, what is optional and what could be planned for later. A low initial price can become poor value if important limitations are missed and work has to be redesigned halfway through.
Before agreeing to a project, ask what has been checked, whether any remedial work is necessary, and whether the quotation includes testing and commissioning. You should also know who will be responsible for final certification and sign-off. These are basic signs of a professionally managed installation.
Choosing the right approach locally
Properties across Cannock, Hednesford, Rugeley, Burntwood, Lichfield, Walsall, Stafford, Penkridge, Great Wyrley, Cheslyn Hay and Wolverhampton WV9/WV10 vary widely. A newer home with a modern consumer unit may need a very different approach from an older property with a fuse board, limited cable routes or an outbuilding supplied from the house.
The same applies to commercial and industrial premises. A shop, office, warehouse or workshop may have enough supply capacity but still need changes to distribution, protective devices or cable containment. The right answer is based on the survey findings, not assumptions about the age or size of the building.
A careful survey gives you choices before money is committed. It is the point at which a proposed electrical upgrade becomes a properly planned project, with safety, cost and future use considered together.
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.
For a clear assessment of your existing installation and planned electrical work, call 01543 399 196 or WhatsApp 07588 506486. You can also contact us through our contact page. A well-planned survey is the best place to start when you want electrical work completed safely and correctly.