Are Solar Panels Worth It in North Wales?

It is the question every North Wales homeowner asks before anything else, usually with a follow-up about the weather. The short answer is yes, for most properties, and the case does not rest on brochure optimism. It rests on how modern panels actually work, what the region’s climate does to them, and what the payback figures look like. Here is the case as we make it when fitting solar panels across North Wales.

Do solar panels work in the North Wales climate?

Solar panels run on daylight, not direct sunshine, and a modern panel keeps producing on grey, overcast days at reduced output. Across a full year, a well-sized and well-positioned system in this region generates roughly 850 to 950 kWh for every kilowatt of panels installed. A typical 4kW system therefore produces in the region of 3,400 to 3,800 kWh annually, which is close to what an average household uses.

What about winter?

Winter output is lower, and anyone who tells you otherwise is selling something. December and January might produce a fifth of what June does. The system is sized on the annual picture, not the January one: the shape of the year looks like this.

Indicative monthly generation shape for a North Wales system. March to October does the heavy lifting.

The surplus generated through spring and summer offsets the leaner months, and export payments on your summer surplus help balance the winter grid top-up. Adding a battery lets you hold daytime generation for the dark evenings, which matters more here than in the south.

The cooler climate advantage

Heat is the enemy of panel efficiency. Solar cells lose output as their temperature rises, which is why panels in the cooler North Wales climate often run closer to their rated performance than identical systems in the warmer south of England. Steady daylight and lower running temperatures are a better combination than they sound.

What payback can you expect?

The variables are your electricity usage, the system size, whether you add a battery, and what you export. Our cost guide puts figures against typical property types.

Is it too late now the Feed-in Tariff has gone?

The Feed-in Tariff closed to new applicants in 2019, and some people concluded the boat had sailed. The economics say otherwise. Panel prices have fallen a long way since the FIT era, every residential installation now carries 0% VAT, and the Smart Export Guarantee pays for exported power on qualifying systems. The subsidy went, the costs went with it, and payback periods today stand comparison with the FIT years.