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Solar PV ROI Calculator – Ireland

Use our advanced Solar ROI Calculator to estimate how much money you can save with solar panels in Ireland. See your system size, annual generation, payback period, 25-year savings, export income and more — based on real Irish sunlight data to get an approximation of your return on investment

Uses typical Irish solar yield (~950–1,050 kWp/year) Tariffs & Export Battery, EV charger & export Shading factor & Roof orientation Long-term Projections

Enter your system & tariff details

Adjust the inputs below to match the system you’re considering.

Panel wattage (Wp)

Number of panels

Total installed system cost (€) Estimated before SEAI grant is applied.

☀ Shading Factor & Roof Conditions ▶

Roof orientation

Shading (%) Approximate average shading loss across the year.

🔋 Battery & Self-Consumption ▶

Battery size (kWh) Set to 0 if no battery.

Estimated self-use without battery (%) Remainder is exported. Battery increases this automatically.

⚡ Tariffs & Export ▶

Import price from grid (€/kWh)

Export price to grid (€/kWh)

Export (kWh/year) Cap export income if your tariff has a maximum paid export volume.

📈 Long-Term Projections ▶

Short-term analysis period (years)

Electricity price increase per year (%)

Panel degradation per year (%)

This tool uses typical Irish solar yield (base 1000 kWh/kWp/year) adjusted for your roof orientation and shading. Real-world performance will vary.

Calculate Your Solar Savings in Minutes

1. Panel Type & System Size

2. Real Irish Yield Data for Your Home

3. Orientation & Tilt (south, SE/SW, east/west)

4. Day Rate & Feed-in Tariff

5. Battery Storage Options

6. Roof Size & Usable area

7. Self-consumption level

8. Irish Climate & Sunlight Data

9. Local Tariff Structures

10. Region-Specific Performance

11. Real Irish Irradiance (Dublin, Cork, Galway, Belfast)

12. Current SEAI Grant Reductions

⚠️ This is an approximation of your solar system payback based on typical Irish conditions and does not replace a detailed design or financial advice. Volt X will refine these numbers during your free survey.

System size (kWp)	Min (kWh/year)	Max (kWh/year)
1	900	1100
2	1800	2200
3	2700	3300
4	3400	4200
5	4500	5500
6	5400	6600
7	6300	7700
10	9000	11000

System size (kWp)	Min (kWh/year)	Max (kWh/year)
1	500	700
2	900	1200
3	1400	1700
4	1800	2100
5	2300	2800
6	2700	3300
7	3200	4000
10	9000	11000