Frequently Asked Questions (FAQs) – Solar panels.

Solar electricity refers to the generation of electricity using solar photovoltaic (PV) technology. Solar PV panels capture the sun's renewable energy and convert it into usable electricity.

A solar PV system utilises an array of cells containing solar PV material that converts sunlight into direct current (DC) electricity. This electricity can be used to power lighting and electrical equipment in homes.

The number of solar panels required depends on factors such as energy usage, the size of the property, and the number of people living in the home.

Smaller homes may need a 1kW system with approximately 8+ square metres of roof space, while larger energy demands may require a 4kW system with 25+ square metres of roof space.

Solar energy is renewable, meaning it won't run out, and it is environmentally friendly as it does not produce greenhouse gases.

Utilising solar energy helps reduce carbon footprints and contributes to a cleaner environment.

A solar battery is an additional component in a solar PV system that allows unused energy generated by solar panels to be stored. This stored energy can be used during night-time or periods when solar panels aren't producing electricity.

The cost of solar panels can also vary depending on factors such as the size of the installation, the type and output of the panels, and the complexity of the installation process.

On average, a typical residential solar panel system in the UK can cost between £4,000 and £8,000 per kilowatt (kW) of installed capacity.

At E.ON, we offer two packages: the Energise package for unshaded roofs starts at £4,995 for a 6-panel system (2.61 kWp), while the Optimise package for shaded roofs starts at £6,344 for the same system.

Solar energy offers a range of benefits, including being a renewable and clean energy source, providing cost savings on energy bills, offering energy independence, requiring low maintenance, creating jobs and economic growth, being scalable to different energy needs, reducing environmental impact, and providing incentives and rebates for installation.

Charging an electric car using solar energy is not entirely free. Though solar panels generate electricity from sunlight, there are initial installation and equipment costs to consider. However, it can lead to long-term savings on electricity bills and offers a sustainable energy solution.

Yes, solar panels can still generate electricity on cloudy days. While direct sunlight is ideal, solar PV panels can convert the sun's radiation into electricity, even in less sunny conditions.

While a south-facing roof is considered optimal for maximising electricity generation, it is not strictly necessary. South-facing roofs receive direct sunlight during the most intense period (midday) and for a longer duration, enabling solar panels to harness the sun's energy more effectively.

An 8-panel solar PV system can easily fit on the roof of an average 3-bed semi. Most panels generate a good amount of energy per m2, so you can still get plenty of electricity from a smaller roof.

No, solar panels work in all daylight conditions and actually work at their optimum at 10ºc. They may become inefficient if it gets too hot.

Consider factors like aesthetics, value for money, performance, track record, and guarantees. Consult with engineers who can advise you on the panels that suit your needs.

Solar panels come with a manufacturer's guarantee of performance. Different manufacturers offer different guarantees, usually associated with the more expensive panels. Make sure you understand the guarantee before purchasing.

Solar PV systems have long life spans. The inverter should last for over 10 years, and panels should last for at least 25 years. Extended warranties are available for the inverter.

Most domestic installations take no more than a day with minimal disruption. Scaffolding is usually erected a couple of days before the installation. The panels are mounted on the roof, the inverter is installed, and internal wiring is carried out.

Solar panels are generally self-cleaning if positioned at an angle of over 15 degrees. Visual inspection and rinsing, if necessary, are recommended annually.

It is recommended to check and service solar panels every 2 years.

It's highly unlikely if installed properly. Solar PV panels are securely attached to the building using a roof hook and rail system.

Panels are mounted at least 30 cm in from the roof's edge to prevent excessive wind loading.

The electricity produced by solar panels is converted from DC to AC by the inverter. It is then taken from the inverter via an AC cable to the distribution board, powering the circuits in your home.

Solar PV panels alone will not provide electricity 24/7. You would need alternative energy sources or a battery system in addition to solar PV panels to come off the grid.

In a power cut, the inverter switches off, preventing generation from the solar panels. However, a backup system can be installed to use solar energy during a power cut.

To be paid for excess electricity generation, a smart meter is required. Most electricity suppliers offer free installation for their customers.

An Energy Performance Certificate (EPC) is necessary for all buildings that benefit from renewable energy and is a requirement for the Smart Export Guarantee application.

A Feed-in Tariff was a government policy that offered financial incentives to those who generated renewable energy and supplied it to the electricity grid.

Participants received a fixed premium rate for each unit of renewable energy they produced. This scheme promoted the use of clean energy sources and contributed to a more sustainable energy system.

Yes, the Feed-in Tariff scheme ended in March 2019. However, there is the Smart Export Guarantee (SEG) where you can receive payments for excess electricity you generate and sell back to the grid.