FAQ
Everything You Need to Know About Solar PV, Battery Storage & Installation
At HEY Solar, we believe choosing solar should feel simple, transparent, and stress-free. Below you’ll find clear answers to the most common questions about Solar PV systems, battery storage, installation, warranties, and energy savings in the UK.
Whether you’re a homeowner exploring renewable energy for the first time or a business looking to reduce operating costs and improve sustainability, our UK-based experts are here to help you make an informed decision.
If you can’t find the answer you’re looking for, our team is always happy to help — just get in touch for friendly, no-obligation advice.
Solar panels convert sunlight into electricity using photovoltaic (PV) cells. When sunlight hits the panels, it generates direct current (DC) power, which is then converted into usable alternating current (AC) electricity for your home or business using an inverter. Any excess energy can be stored in batteries or exported back to the grid.
Solar panel costs vary based on system size, equipment quality, and installation complexity. Most domestic systems range from £5,000 to £10,000+ depending on capacity (e.g., 3–6 kW). We provide free custom quotes so you know exactly what your investment will be before you commit.
Yes — solar panels are effective across the UK, including cloudy and low-light conditions. Modern PV technology is designed to perform efficiently in colder climates and generate healthy amounts of energy year-round.
In most residential cases, solar panel installations fall under permitted development rights and do not require planning permission. However, exceptions can apply (e.g., listed buildings or conservation areas). We can advise you on whether your property needs additional approvals.
System size depends on your property’s roof size, orientation, shading, and your typical energy usage. We carry out a detailed site assessment to recommend a system that maximises performance and delivers strong savings for your household or business.
Excess electricity can be used to charge a battery storage system for use later in the day or at night. If you’re connected to the grid, you may also be able to export surplus energy back to your energy supplier — potentially earning extra value.
Most domestic installations take 1–2 days once all materials are on site. Larger commercial systems may take longer depending on scale. We handle the project from design through to commissioning and make the process as smooth as possible.
We install high-quality equipment backed by manufacturer warranties for panels and inverters (often 10–25 years depending on brand). Additionally, we provide workmanship and installation guarantees so you get long-term peace of mind with your investment.
Yes — solar panels produce electricity you would otherwise buy from the grid, which can significantly reduce your energy costs. The amount you save depends on your system size, energy usage patterns, and electricity prices.
Absolutely. Our solar systems are designed to be battery-ready, meaning you can integrate storage at any point — whether now or in the future as your energy needs evolve.
Solar installations often increase property value because they reduce ongoing energy costs and appeal to buyers looking for energy efficiency. Many UK homebuyers see solar panels as a desirable feature.

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