Solar Only or
Solar + Battery
which is right for you?

With Solar Only, surplus generation is normally exported to the grid. With a suitable battery, more of that surplus can be stored for use later, subject to system capacity, household demand and seasonal generation.

Often, yes. EPC can explain whether a battery-ready design makes sense for your home and what future changes may be required. Planning for this at the design stage can make a later upgrade more straightforward.

Battery size should reflect how much solar you are likely to generate, when your home uses electricity, your tariff and any future demand such as an electric vehicle or heat pump. Bigger is not automatically better.

Yes, although output is lower when daylight is weaker and days are shorter. The estimate should use realistic seasonal generation rather than assuming summer performance all year.

They can be designed together, but the extra electricity demand needs to be included in the assessment. Tell EPC about existing or planned equipment so the recommendation reflects the complete household picture.

A recent electricity bill, annual consumption, tariff details, daytime and evening usage, roof information and any plans for an EV or heat pump all help. Smart-meter data can provide an even clearer view where available.

The estimate shows the likely cost of the selected route using the assumptions stated on the page. A final proposal confirms the equipment, installation scope, scaffolding, electrical work and any property-specific requirements.

They are modelled from the proposed system, roof conditions, local solar resource, household consumption and tariff assumptions. Actual results vary with weather, energy prices and how electricity is used.

Where finance is available, EPC can show the relevant payment option separately from the system price. Availability, rates and terms are subject to eligibility and the finance provider’s approval.

EPC can provide an indicative view based on the confirmed system cost, expected generation, self-use, export payments and tariff. It should be treated as an estimate because future energy prices and household behaviour can change.

Many standard residential solar installations can be completed quickly, but the exact programme depends on the system, roof, electrical work, scaffolding and weather. EPC will confirm the expected schedule before work begins.

Many domestic solar installations fall within permitted development, but exceptions can apply to listed buildings, conservation areas and some properties. EPC will flag where additional checks or permission may be needed.

A temporary shutdown is normally required while the new equipment is connected and tested. The installation team will explain when this will happen and aim to keep disruption to a minimum.

The design considers usable roof area, orientation, shading, access and the proposed fixing method. Any structural concern identified during assessment or survey should be resolved before installation proceeds.

EPC commissions the system, explains how it works and provides the relevant handover information and certification. You should also receive details of product warranties, monitoring and who to contact if you need support.