Solar Panels in Kilrea, Londonderry

A 3-4kWp system in Kilrea typically costs £5,000-£8,000 with 0% VAT included, the zero-rate VAT alone saves around £1,000 compared to the standard 20% rate. Based on Kilrea's solar yield of 804 kWh/kWp, a 4kWp system generates approximately 3,216 kWh/year, paying for itself in 6-8 years through electricity savings of £900+/yr and Smart Export Guarantee income of 4-6p/kWh. Adding a home battery (5-10 kWh) costs an additional £3,000-£6,000 and also benefits from 0% VAT. We recommend getting at least three quotes from MCS-certified installers to compare pricing and equipment.

Yes. A home battery (typically 5-10 kWh capacity) stores excess solar electricity generated during the day for evening and overnight use. This increases your self-consumption from around 30-40% to 60-80%, significantly reducing your reliance on grid electricity. Batteries currently cost £3,000-£6,000 and also benefit from 0% VAT on residential installations. Most batteries are warranted for 10-12 years and can be retrofitted to an existing solar system. Popular options include the Tesla Powerwall, GivEnergy, and Fox ESS units.

Yes. East or west-facing roofs still produce 80-85% of the output of a south-facing roof, making them well worth installing. Many installers recommend splitting panels across east and west faces to spread generation throughout the day, which can improve self-consumption and reduce the amount of electricity exported at the lower SEG rate. East-facing panels generate more in the morning, while west-facing panels peak in the afternoon, both align well with typical household usage patterns. Only north-facing roofs are generally unsuitable for solar in the UK.

Based on PVGIS satellite data for Kilrea's coordinates, a 4kWp system generates approximately 3,216 kWh per year at a yield of 804 kWh/kWp, covering 85% of average household use (3,800 kWh/year). The area receives around 1,240 sunshine hours annually. Londonderry ranks #91 of 102 UK counties, and solar still pays off here thanks to longer summer daylight hours and cooler temperatures that help panels run more efficiently. Output peaks between May and August and is lower in winter, though annual generation figures already account for this seasonal variation. South-facing roofs at a 30-40° pitch achieve optimal yields, while east or west-facing roofs still produce 80-85% of maximum output.

Yes. Under the UK's Smart Export Guarantee (SEG), licensed suppliers with 150,000+ customers must offer a tariff for surplus electricity you export to the grid. Typical rates are 4-6p/kWh, with some suppliers offering up to 15p/kWh on time-of-use tariffs. You need a smart meter and an MCS-certified installation to be eligible, your supplier will install a smart meter for free if needed. A typical 4kWp system without battery storage exports around 50-70% of its generation, providing a meaningful income stream alongside electricity bill savings.

An Energy Performance Certificate (EPC) rates your home's energy efficiency from A (most efficient) to G (least efficient). While an EPC is not required for solar panel installation, adding solar panels typically improves your rating by 1-2 grades, which can increase your property value by up to 4%. An EPC assessment costs around £60-£120 and is valid for 10 years. If you are selling or renting your property, an up-to-date EPC is legally required, so having solar panels reflected in your rating is beneficial.

Most homes in Kilrea benefit from a 3-6 kWp system. A 4kWp system (10 panels at ~400W each) generates 3,216 kWh/yr at Kilrea's yield of 804 kWh/kWp, covering 85% of average household electricity use. The system requires approximately 18-20 m² of unshaded roof space. If you have an electric vehicle or heat pump, a larger 5-6 kWp system (12-15 panels) may be more appropriate to offset the additional demand. Your MCS-certified installer will assess your roof space, orientation, shading, and electricity consumption to recommend the optimal size during a site survey.