Solar & Battery Pricing for Ireland Design, Cost & Payback Calculator
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.
Solar Planning & Design
To size your system, start with two questions: how much electricity you use, and how much roof space you have.
1. Energy usage
The average Irish household uses between 10–20 kWh of electricity per day, but this varies widely with home size, heating type, and whether you have an electric vehicle. Usage also shifts with the seasons — winter demand is typically higher due to shorter days, heating pumps, and lighting. We start with daily energy usage because it determines how large a solar system you need: the higher your consumption, the more panels are required to offset a meaningful share of your bill.
Note: These are simplified estimates. For detailed tariff inputs and advanced calculations, use the full Photonik app.
Representative flat export rate (feed-in tariff). What you earn per kWh of surplus solar exported to the grid. Your actual rate depends on your provider, plan, and time of day.
Estimated at 75% of the retail grid rate. A battery lets you store daytime solar and export during expensive peak hours, so each exported kWh is typically worth more than a flat feed-in tariff. Real returns depend on your time-of-use tariff and battery efficiency.
2. How many panels can fit on your roof?
How many panels fit depends on your house type. A typical 3-bed semi-detached has 30–40 m² of usable rear roof, fitting around 10 panels (4 kW). A bungalow may have 20–30 m² of south-facing roof depending on size, while a 4-bed detached home can often accommodate 12 or more panels. Chimneys, dormer windows, and Velux skylights reduce available space, and panels must be set back at least 50 cm from roof edges.
Irish roofs are typically pitched at 30–45° with concrete tiles, natural slate, or fibre-cement slate — all suitable for standard mounting. Installations must be completed by an SEAI-registered company and comply with IS 10101 wiring rules and ESB Networks connection requirements.
Loading panel placement tool...
This is a simplified panel layout tool — if you hit issues here, or need multiple groups, shading, or generation calcs, use the full Photonik design tool.
System sizing Ireland
System Costs
The overall price of a solar and battery system depends on equipment quality, installation complexity, and any available rebates or incentives.
Estimated price
A 5.9 kW solar system in Ireland costs approximately €11,282, while adding a 10 kWh battery increases the total to around €21,567. 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 9.3 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.
Tiers follow the same scale as the Photonik app. Browse the panel product directory.
Rebates & incentives
The SEAI solar PV grant covers up to €1,800 (€700/kWp for the first 2 kWp, €200/kWp up to 4 kWp). Residential solar installations carry 0% VAT. To qualify, your home must have been built and occupied before 2021, and the installation must be completed by an SEAI-registered company. The grant is paid after completion and a post-works BER assessment.
Payback
Simple payback is the system price divided by annual savings. The price side depends on equipment quality, installation complexity, and rebates. The savings side depends on your electricity usage, the buy rate per kWh, and the feed-in tariff for exported energy.
Simple payback calculation
Electricity rates & feed-in tariffs
Irish residential electricity rates are among the highest in Europe at around 28–35c/kWh, making self-consumed solar particularly valuable. Clean Export rates from suppliers typically range from 19–24c/kWh, with some promotional rates up to 32c/kWh in the first year. Export income up to €400/year is tax-free until end of 2028. Ireland has good but not exceptional solar irradiance — payback relies more on high tariffs than on high generation.
Solar Design & Savings in Ireland's regions
Connacht
Design and pricing assumptions for Connacht use region-level sun data and local incentive settings.
Leinster
Design and pricing assumptions for Leinster use region-level sun data and local incentive settings.
Munster
Design and pricing assumptions for Munster use region-level sun data and local incentive settings.