Énergie Solaire à Helsinki
Production annuelle
4 881
kWh/year
Durée d'amortissement
20
years
Réduction CO₂
0.4
t CO₂/year
Exemple: installation 5 kWc, valeurs moyennes du pays
Questions fréquentes sur Helsinki
Quelle production annuelle pour un système solaire 5 kWc à Helsinki?
Un système de 5 kWc à Helsinki produit environ 4881 kWh par an (données PVGIS).
Quel est le coût d'une installation solaire 5 kWc en Helsinki?
En Helsinki, une installation PV de 5 kWc coûte environ 6,318 € installation comprise.
Quelle est la durée d'amortissement solaire à Helsinki?
Aux prix actuels de l'électricité et du tarif de rachat, l'amortissement est d'environ 20 ans.
Quelle économie de CO₂ pour le solaire à Helsinki par an?
Un système de 5 kWc à Helsinki économise environ 0.4 t de CO₂ par an.
Assumptions and provenance
This example calculation is disclosed in full. Every quantity below enters the figures above exactly as stated — a specialist can recompute them or substitute their own assumptions.
- Payback (cumulative)
- 20 years
- Payback (discounted)
- not reached in 20 years
- Payback (static)
- 19,0 years
Sum of the nominal annual net benefits, including degradation, price escalation and replacement costs — not discounted. This is the figure shown above.
The same cash flows, discounted at the nominal rate the net present value uses. Always the later of the two.
Investment divided by the first year's benefit — without price escalation, degradation or replacement costs. Many quotes use this; depending on the assumptions it comes out shorter or longer.
| Quantity | Value | Source / note |
|---|---|---|
| System size | 5 kWp | Example system of this page |
| Investment | 6 318 € (1 264 €/kWp) | Länderreferenz bei 10 kWp, größendegressiv mit Exponent 0.2 |
| Operating cost | 70 €/a | — |
| Electricity price | 0,160 EUR/kWh | Eurostat nrg_pc_204, Band DC, 2025-S2 |
| Feed-in tariff | 0,0500 EUR/kWh | — |
| Self-consumption share | 30 % | — |
| Degradation | 0,5 %/a | — |
| Price escalation | 2,0 %/a | — |
| Discount rate | 3,0 %/a | Nominal, matching the nominally escalating revenues |
| Horizon | 20 years | — |
| Grid CO₂ factor | 89 g/kWh | EEA, greenhouse gas emission intensity of electricity generation (seed), 2023 |
| Specific yield | 976 kWh/kWp/a | The figure with which a third-party calculation can be checked |
| Tilt | 35° | — |
| Azimuth | 0° (0 = south) | — |
| Performance ratio | 82,6 % | — |
Data source: PVGIS — Photovoltaic Geographical Information System (EU JRC) · version PVGIS 5.3, radiation database PVGIS-SARAH3 · as of 2024 · licence: Free use with attribution (JRC PVGIS terms of use)
Non-binding initial assessment for an example system, not professional advice. Small wind requires an on-site wind measurement before any investment decision.