Free Renewable Energy Survey

Most households considering renewable technology meet installers who each arrive with their own survey. A solar company assesses the roof, a battery company checks the consumer unit, an insulation firm measures walls and loft, and a heat pump installer calculates heat loss. Each survey may be competent within its own scope, but none is designed to view the house as a single system. An independent survey fills that gap.

The five technologies on offer interact. Insulation reduces heat loss, which determines the size of heat pump needed and the flow temperature it can run at. A heat pump fitted before the fabric is improved may be undersized, costing more and running less efficiently. Solar generation and heating demand peak at different times, and a battery changes that balance. An EV charger adds a large daily load that affects how the whole electrical system should be designed. Each decision depends on the others, but an installer surveying only their own product has no reason to model them together.

An independent survey assesses the property as one system. It measures heat loss and ventilation, roof orientation, shading and structural capacity, the electrical supply and its headroom for new loads, and the household’s actual energy use. It then tests combinations: solar with a battery and no heat pump, a heat pump after insulation, or solar, heat pump and EV charging together. The report compares realistic options side by side, including the order of installation, so the household knows which work to do first and which to avoid repeating.

Sequencing has practical value. Insulating after fitting a heat pump can leave it oversized and wasteful. Loft insulation added later may require roof work that disturbs solar panels. A whole-house view reduces total cost by avoiding duplicate surveys, unnecessary equipment and remedial work.

Independence also removes a conflict of interest. An installer paid to sell a product has an incentive, often unintended, to recommend that product. An advisor with no commercial stake in any of the five technologies can recommend the combination that suits the building. Because the survey is not tied to a sale, its assumptions, figures and payback estimates can be examined openly and compared like-for-like with installer quotes.

The result is a plan rather than a sales pitch. It sets out what to do now, what to do later, and how each step affects the rest. For a decision involving tens of thousands of pounds and decades of energy use, that whole-house perspective is the foundation of getting it right.