If you’re considering solar panels for your home, one of the first questions you’ll ask is: “How much electricity will they actually generate each day?”
The answer depends on your system size, roof orientation, weather conditions, and time of year. However, understanding typical daily solar generation in Ireland can help you estimate potential savings and decide whether solar PV is worth the investment.
How Much Electricity Do Solar Panels Generate Daily?
In Ireland, a well-installed solar PV system typically generates between 850 and 1,000 kWh per kWp of installed capacity each year.
On a daily basis, this means:
• A 2 kWp system can generate around 5–10 kWh on a good day.
• A 4 kWp system can generate around 10–22 kWh depending on conditions.
• A 6 kWp system can generate around 15–33 kWh on a sunny summer day.
During June and July, many homeowners see their highest production levels, while winter generation can be significantly lower due to shorter daylight hours.
Solar Panel Output by Season in Ireland
Summer
Summer offers the best solar generation conditions. Long daylight hours and higher sun angles allow systems to produce close to their maximum output.
A typical 4 kWp system may generate:
- 18–22 kWh on a sunny day
- 10–15 kWh on a mixed-weather day
Spring and Autumn
Generation remains strong during these seasons.
A typical 4 kWp system may generate:
- 8–16 kWh per day
Winter
Solar panels still work in winter, but shorter days reduce output.
A typical 4 kWp system may generate:
- 1–8 kWh per day
What Affects Solar Panel Generation?
Several factors influence how much electricity your system produces.
Roof Direction
South-facing roofs generally achieve the highest annual generation.
East-west installations can still perform very well and often provide more useful electricity throughout the day.
Roof Pitch
Most Irish installations perform well with roof pitches between 30 and 40 degrees.
Shading
Trees, chimneys, and nearby buildings can significantly reduce production if they cast shadows on panels during peak sunlight hours.
Weather
Solar panels generate electricity even on cloudy days, but output is naturally higher during bright sunshine.
How Much Money Can Solar Panels Save?
The value of generated electricity depends on how much you use yourself.
If your electricity costs €0.35 per kWh:
- 10 kWh used in the home saves approximately €3.50.
- 20 kWh used in the home saves approximately €7.00.
Electricity exported to the grid can also earn payments through a Clean Export Guarantee (CEG) tariff, providing an additional income stream.
Example: A Typical Irish Home
A homeowner with a 4 kWp solar PV system may generate around 3,500–4,000 kWh per year.
Depending on electricity prices and self-consumption levels, annual savings and export payments can often reach €800–€1,400 per year.
Are Solar Panels Worth It in Ireland?
For many households, the answer is yes.
Electricity prices remain significantly higher than they were a few years ago, and modern solar systems are more affordable and efficient than ever. Combined with export payments and reduced reliance on the grid, solar panels can provide substantial long-term savings.
If you’re evaluating solar for your home, the most important figure isn’t just how much electricity your panels generate—it’s how much of that electricity you can use yourself. The higher your self-consumption, the faster your return on investment.
Contact Us
📞Get in touch with House2Home today and start your journey towards a warmer, more comfortable and more energy-efficient home.