EU solar installation costs in 2026 vary by as much as 50% between the cheapest and most expensive member states for identical systems — not because of module quality differences, but because of structural factors in each market. If you're a homeowner or a policy analyst trying to understand what fair value looks like for a 6 kWp system, this seven-country benchmark gives you a reliable anchor.
Methodology: What We're Comparing
All prices are for a fully installed, grid-connected 6 kWp residential rooftop system including: Tier 1 TOPCon panels (mono, min. 410W per panel), a quality string or hybrid inverter (SolarEdge, Fronius, SMA, or equivalent), standard pitched roof mounting hardware, AC and DC cabling, and grid connection. Battery storage is excluded. Prices are quoted in €/W (watts peak, fully installed) and as total system cost, inclusive of VAT at each country's applicable rate.
Germany: €1.30–€1.50/W (€7,800–€9,000 total)
Germany remains Europe's most competitive residential solar market. A deep installer ecosystem, mature supply chains, and KfW 270 financing at subsidised interest rates combine to produce the lowest quality-adjusted installed prices in western Europe. VAT on residential solar installations was reduced to 0% for systems up to 30 kWp from January 2023, removing a significant cost barrier. Online tender platforms (Selfmade Energy, EnBW Solar) have driven additional price competition.
→ Before you read on — see what payback looks like for your roof in under a minute.
Netherlands: €1.35–€1.55/W (€8,100–€9,300 total)
The Netherlands has historically been one of Europe's strongest solar markets by penetration. Installer competition keeps prices near German levels, though the upcoming end of net metering ('saldering') from 1 January 2027 has introduced some market uncertainty. The ISDE subsidy for compatible equipment is helping maintain installation momentum.
Spain: €1.40–€1.60/W (€8,400–€9,600 total)
Spain's strong solar irradiance means high system yields and strong payback economics, which has attracted competitive installer density, particularly in Andalusia, Catalonia, and Madrid. VAT treatment on solar installations has been subject to reductions in recent years — check with your installer for the applicable rate in your region, as it varies by installation type. Net metering (autoconsumo) rules introduced since 2019 have created a workable export framework.
Italy: €1.45–€1.65/W (€8,700–€9,900 total)
Italy's strong Superbonus-era installer base has largely survived the subsidy wind-down, and competitive pricing has been maintained. The 110% Superbonus is no longer available in 2026 at previous rates, but regional incentives persist. The southern Italian irradiance advantage (over 1,600 kWh/m²/year in Sicily and Puglia) makes the economics compelling even at these price points.
France: €1.50–€1.70/W (€9,000–€10,200 total)
France's solar market has grown significantly but installer concentration outside major urban centres means less price competition in rural areas. The MaPrimeRénov' scheme and regional CEE bonuses partially offset this. EDF Obligation d'Achat feed-in tariffs for systems under 9 kWp provide a reliable export revenue stream.
Ireland: €1.55–€1.80/W (€9,300–€10,800 total)
Ireland's relatively young installer market and higher labour costs push prices above the EU core. The SEAI solar grant (up to €1,800 for eligible systems in 2026) provides meaningful offset. Export tariffs from suppliers including Electric Ireland and Energia bring payback into the eight to ten year range for well-sited systems.
Poland: €1.00–€1.20/W (€6,000–€7,200 total)
Poland's significantly lower labour costs produce the EU's most affordable residential solar installations. The Mój Prąd (My Power) grant programme (Mój Prąd 6.0, 2025–2026), funded partly through EU Cohesion funds, covers up to PLN 6,000 (approximately €1,400) for PV-only systems, with higher amounts for PV paired with storage or a heat pump. Strong installer growth since 2021 has further compressed margins. Poland is the clearest example of how labour costs — not module prices — drive the installed price gap across Europe.
The Normalised €/W Picture
Normalising by system size (€ per watt peak, fully installed) makes the comparison cleaner: Poland at €1.00–€1.20/W sits at one end, Ireland at €1.55–€1.80/W at the other. For a buyer in France or the Netherlands, €1.50–€1.55/W is the reasonable anchor — anything significantly above this warrants scrutiny of what the installer is including in scope. Getting three quotes is as valuable in France as it is in Poland; price variation between installers in the same country typically runs 15–25%.
Key Takeaways
- For a standard 6 kWp system, installed costs in 2026 range from €6,000 in Poland to €10,800 in Ireland — a 50%+ spread driven by labour, not panels.
- Germany offers the strongest combination of competitive pricing and financing options (KfW 270 subsidised loans, 0% VAT).
- Module costs are effectively globalised — the country variation comes from labour rates, installer market density, and VAT treatment.
- All seven countries have national incentives (grants, reduced VAT, feed-in tariffs) that improve net economics beyond headline installed prices.
- Payback periods in high-irradiance markets (Spain, Italy) often outperform Germany despite similar prices, because of higher annual yields.
Wherever you're based, comparing multiple quotes is the single most effective way to find fair value. Use Comparisun to access vetted installer quotes and benchmark your price against market rates in your country.