How Much Can Solar Panels Save You in Wales?
What a 4kWp system generates in Wales, what it is worth at today’s electricity prices, and the assumption that makes most solar quotes look better than they are.
With electricity prices remaining significantly higher than historic levels, many Welsh homeowners are exploring solar panels as a way to reduce energy bills and gain greater energy independence.
One of the most common questions we hear is:
“How much money can solar panels actually save me?”
The answer depends on your property, energy usage and system size, but the savings can be substantial.
Current Electricity Costs
As of July to September 2026, households on standard variable tariffs are paying an average of 26.11p per kWh for electricity, according to Ofgem. Every unit of electricity you generate and use from your solar panels is electricity you don’t have to buy from your supplier.
How Much Electricity Do Solar Panels Generate in Wales?
Despite Wales’ reputation for wet weather, solar panels perform extremely well.
A typical 4kWp domestic solar system can generate on average 3,500 to 3,800 kWh annually in Wales, depending on location, roof orientation and shading.
Example Savings
Let’s assume a 4kWp system generates 3,760kWh annually.
If a homeowner uses 50% of that electricity themselves:
- 1,880kWh used in the home
- Saving around £491 per year at 26.11p/kWh
- Remaining electricity exported through a Smart Export Guarantee tariff
Many households can achieve total annual benefits of approximately £650 to £750 per year, depending on usage patterns and export rates
What Increases Savings?
Working From Home
The more electricity you use during daylight hours, the more solar energy you consume directly.
Battery Storage
Batteries allow excess daytime generation to be used in the evening when energy demand is often highest.
Electric Vehicles
Charging an EV using solar significantly increases self-consumption and savings.
Air Source Heat Pumps
Combining solar with an air source heat pump can dramatically reduce heating costs.
Are Solar Panels Worth It In Wales?
Absolutely. Modern systems last 25 years or more and continue generating free electricity long after they’ve paid for themselves. With electricity prices remaining relatively high and 0% VAT still available on residential installations, there has never been a better time to consider solar.
Speak To Alpha Energy Group
Our team can assess your roof and provide realistic savings projections based on your property’s actual energy consumption and orientation.