Your Home Energy Questions Answered

Most homes across Dorset, Hampshire, and Wiltshire can benefit from a heat pump. Key factors include insulation levels, available outdoor space, and existing radiator sizing. We conduct a thorough home survey before any installation — this is always free and without obligation — to confirm suitability and design the right system for your property.

The cost varies depending on your home's size and specific requirements. However, the Boiler Upgrade Scheme (BUS) provides a £7,500 grant towards an air source heat pump installation, significantly reducing your upfront outlay. We'll provide a detailed, fixed-price quote following your survey.

To be eligible, you must own the property (including landlords), the property must be in England, Scotland, or Wales, and you must be replacing a fossil fuel heating system. Your property also needs a current EPC with no outstanding recommendations for loft or cavity wall insulation (exemptions may apply). The installation must be carried out by an MCS-certified installer — Renerji manages the entire application process on your behalf.

Yes. Heat pumps are highly efficient, producing 3–4 units of heat for every unit of electricity consumed. Savings depend on your existing system, insulation, and energy tariff. When paired with solar panels and battery storage, the savings are typically much greater — your solar generation can power your heat pump at near-zero cost.

A typical air source heat pump installation takes 3–5 days. There will be some disruption to your heating and hot water during this period, but our team works efficiently to minimise inconvenience. We keep you informed throughout and ensure your system is fully commissioned and tested before we leave.

Cost depends on system size and roof complexity. Payback periods for the South of England are typically 7–10 years, driven by energy bill savings and income from the Smart Export Guarantee (SEG). With battery storage and an EV charger, self-consumption rates rise significantly and payback can improve further. We provide clear financial projections as part of your quote.

Very much so. The South of England benefits from some of the highest solar irradiance in the UK — Dorset and Hampshire receive significantly more sunlight than the UK average. Modern panels generate effectively even on overcast days, and our systems are designed to maximise output across all seasons.

In most cases, residential solar panels are considered 'permitted development' in England, so planning permission is not required. Restrictions may apply for listed buildings or properties in conservation areas. We'll advise on any specific requirements during your survey.

For most homeowners, yes. Without a battery, solar energy you don't immediately use is exported to the grid at a low rate. A battery lets you store that excess and use it in the evening or overnight — dramatically increasing your self-consumption and savings. Renerji designs solar and battery as an integrated system rather than two separate products.

Yes. Battery storage can be retrofitted to most existing solar installations. We'll assess your current system and recommend compatible battery options that will maximise the return from your existing panels.

A battery lets you store solar energy generated during the day and use it in the evening when your panels aren't producing. It can also charge on cheap overnight electricity tariffs and discharge during expensive peak periods. When integrated with your heat pump and EV charger, smart management software ensures the whole system optimises for lowest cost.

We install smart home EV chargers in 7kW and 22kW options. All chargers include app control, smart scheduling for off-peak tariff charging, and — when paired with solar — the ability to charge your vehicle automatically from your own solar generation.

Yes. When you pair a smart EV charger with solar panels (and ideally a battery), the system can automatically detect surplus solar generation and divert it to charge your vehicle rather than exporting it to the grid. This means near-zero charging costs when driving on solar power.

MCS (Microgeneration Certification Scheme) certification is the industry standard for quality in renewable energy installations. It means your installer is assessed against rigorous technical and quality standards. Critically, MCS certification is a requirement for accessing the £7,500 Boiler Upgrade Scheme grant and the Smart Export Guarantee income.

Yes. All Renerji installations come with a workmanship guarantee, and we use leading manufacturers whose products carry robust product warranties — 25+ years on solar panels and strong guarantees on heat pumps and battery systems. Full details are provided with every quote.

You can start with any single product — a heat pump, solar panels, battery, or EV charger as a standalone installation. We'll always design with future expansion in mind so that adding other products later is straightforward. That said, when you install multiple technologies together, the savings and system efficiency are significantly greater.