Solar & Battery Design Tools for Ireland Design Systems, Calculate ROI & Find Installers
Design solar and battery systems across Ireland using Photonik's professional design platform. Ireland offers SEAI grants up to €1,800 for solar panel installations, making solar more affordable. The country is rapidly expanding its solar capacity with growing adoption driven by government support and excellent solar potential.
ℹ️ Get quick estimates for solar and battery sizing, costs, and savings in Ireland using these simplified calculators. For more accurate, advanced calculations, use the full Photonik design platform.
Solar Design Ireland
Energy Usage
Understanding your household's daily energy consumption is essential for designing an effective solar system in Ireland. The average Irish household uses between 10-20 kWh per day, with energy-efficient properties often using significantly less. This consumption reflects Ireland's temperate climate, home sizes, and lifestyle patterns, with higher usage during winter months for heating and moderate usage during summer months.
Before installing solar, consider reducing your energy consumption through improved insulation and energy-efficient appliances. This is particularly valuable in Ireland, where SEAI grants make solar more affordable, and reducing consumption can lower required system size and improve returns, especially important given Ireland's variable solar generation throughout the year.
Typical energy usage per person per day in Ireland:
Note: Actual usage varies depending on property size, building efficiency, climate, and appliances.
Solar System Sizing
You'll need around 3.9kW of solar to match your average Irish household consumption. We recommend sizing between 5.9kW and 7.9kW for optimal results, accounting for daily and seasonal variations. Ireland enjoys good solar potential, with most regions averaging 3.5-4.0 kWh/kW/day annually, though this varies significantly between summer and winter months.
A 6.6 kW system in Ireland generates approximately 24.4 kWh daily on average, with seasonal variation from 1.96 kWh/kW/day in December to 4.62 kWh/kW/day in August. Ireland's good solar irradiance, combined with SEAI grants and growing adoption, makes solar a viable investment for homeowners across the country.
Solar & Energy Savings
Calculate Heat Pump & EV Savings
Electrify your home by replacing gas heating, petrol vehicles, and other fossil fuel appliances with electric alternatives powered by clean solar energy. This delivers significant additional financial savings and substantial carbon emission reductions. Our calculator helps you compare costs and model the financial impact of switching to electric appliances and vehicles.
How Solar Reduces Your Electricity Bills
The calculations below show how your electricity bills change with solar. Your Old Bill of - per month (- annually) is calculated from your total energy consumption multiplied by the grid electricity rate. Your New Bill of - per month (- annually) accounts for solar generation, the percentage you use directly (self-consumption), remaining grid consumption, and feed-in credits for excess energy exported to the grid. This results in monthly savings of - (- annually).
Battery Storage Ireland
Solar Battery Sizing
With solar-only (no battery), a 6.6 kW system provides approximately 45% self-usage in Ireland, depending on your consumption patterns, drawing 55% from the grid. Adding a 10 kWh battery increases energy independence to approximately 93% annually, reducing grid reliance to 7%. Battery storage is valuable in Ireland, allowing you to store excess summer generation for use during darker winter months and maximising the value of your solar investment.
Net metering and feed-in tariffs vary by electricity supplier in Ireland, with rates typically ranging from €0.08-0.15 per kWh depending on your supplier. Battery storage is particularly valuable given Ireland's variable solar generation, providing backup power and maximising self-consumption. For accurate battery savings and ROI calculations specific to your location and supplier, use the full Photonik design tool.
Energy Self Sufficiency Calculator*
*Note: This calculator provides simplified battery self-sufficiency estimates. For accurate per-hour simulations that account for solar generation patterns, consumption timing, battery charging/discharging cycles, and efficiency losses across all seasons, use the full Photonik design tool.
Panel Placement Tool Ireland
This is a simple panel placement tool that lets you quickly estimate panel count for a single roof area. Try Photonik for advanced features:
- Multiple panel groups
- Custom roof angles
- Panel orientation
- Shade loss calculations
- Panel selection (1000+ models)
- Full integration with our design tool
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Solar & Battery System Cost Ireland
Understanding Solar & Battery System Costs
A 6.6 kW solar system in Ireland costs approximately €12,239, while adding a 10 kWh battery increases the total to around €18,958. Ireland offers SEAI grants up to €1,800 for solar panel installations, making solar more affordable. Solar-only systems typically pay for themselves in around 9.4 years in Ireland, whilst adding battery storage usually extends payback but significantly improves energy independence. Ireland's combination of good solar potential, SEAI grants, and growing adoption makes solar particularly attractive, with many systems achieving payback in under 7-9 years.
The cost breakdown shows estimates for equipment costs, installation labour, and applicable taxes. Adjust system size and battery storage to see how it affects total investment and payback periods. Ireland has good installer coverage, with qualified installers operating throughout Dublin, Cork, and regional areas, providing competitive pricing and quality installations.