How much energy do solar panels produce in Letterkenny?

A 5 kWp solar panel system in Letterkenny, Ireland produces approximately 4,243 kWh per year, based on EU PVGIS data.

How much can you save with solar panels in Letterkenny?

A 5 kWp system without battery saves approximately €1,036 per year (accounting for 32% self-consumption and feed-in tariff for surplus). The payback period is 6.3 years.

What is the optimal panel angle in Letterkenny?

The optimal tilt angle for solar panels in Letterkenny is 39 degrees facing south.

Solar Panels in Letterkenny

Ireland · 54.95°N, 7.73°W

Solar Potential

Low

849 kWh per kWp installed capacity

Your Solar Savings Estimate

Configure system size and battery to see realistic savings

Data last updated: March 2026

System Size

Battery Storage

Annual Output

4,243kWh

Net Annual Savings

€1,036

Payback Period

6.3 yrs

25-Year Net

€25,686

Savings Breakdown

Self-consumed (32% of 4,243 kWh)1,358 kWh × 0.370 €/kWh

→ Savings from own usage+€502

Injected to grid (68% of production)2,885 kWh × 0.185 €/kWh

→ Feed-in revenue+€534

Net Annual Savings€1,036

Installation cost (5 kWp × 1,300 €/kWp)€6,500

Ireland Solar Policy

Clean Export Guarantee: €0.13-0.25/kWh depending on supplier. 0% VAT. SEAI grants available.

Source: CRU, SEAI, Eurostat H1 2025

The savings estimates shown are for informational purposes only and do not constitute financial advice. Actual savings depend on your specific installation, roof condition, shading, consumption patterns, and future electricity price changes. Feed-in tariffs and regulations change frequently. Always obtain quotes from certified installers and consult a financial advisor before making investment decisions.

Monthly Energy Production

125 kWh

226 kWh

378 kWh

512 kWh

577 kWh

530 kWh

510 kWh

481 kWh

369 kWh

272 kWh

165 kWh

99 kWh

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Month	Energy (kWh)	Irradiation (kWh/m²)
January	125	30
February	226	53
March	378	90
April	512	125
May	577	142
June	530	133
July	510	129
August	481	120
September	369	91
October	272	66
November	165	40
December	99	25
Total	4,243	1,044

Environmental Impact

CO2 Saved Per Year

989 kg

Equivalent Trees Planted

45 trees

Optimal Panel Angle

39° tilt

Technical Details

Data Source: EU PVGIS v5.3
Coordinates: 54.95°N, 7.73333°W
System Loss: 14%
Optimal Inclination: 39°
Optimal Azimuth: 0°
Yearly Irradiation: 1044 kWh/m2
Retail Electricity Price: 0.370 EUR/kWh
Feed-in Tariff: 0.185 EUR/kWh
Install Cost: 1,300 EUR/kWp

€1,572

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