How much energy do solar panels produce in Harrow?

A 5 kWp solar panel system in Harrow, United Kingdom produces approximately 5,117 kWh per year, based on EU PVGIS data.

How much can you save with solar panels in Harrow?

A 5 kWp system without battery saves approximately €507 per year (accounting for 23% self-consumption and feed-in tariff for surplus). The payback period is 13.3 years.

What is the optimal panel angle in Harrow?

The optimal tilt angle for solar panels in Harrow is 40 degrees facing -7 degrees from south.

Solar Panels in Harrow

United Kingdom · 51.58°N, 0.33°W

Solar Potential

Moderate

1,023 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

5,117kWh

Net Annual Savings

€507

Payback Period

13.3 yrs

25-Year Net

€9,488

Savings Breakdown

Self-consumed (23% of 5,117 kWh)1,177 kWh × 0.280 €/kWh

→ Savings from own usage+€330

Injected to grid (77% of production)3,940 kWh × 0.045 €/kWh

→ Feed-in revenue+€177

Net Annual Savings€507

Installation cost (5 kWp × 1,350 €/kWp)€6,750

United Kingdom Solar Policy

Smart Export Guarantee (SEG): £0.03-0.05/kWh typical, up to £0.25 with battery. 0% VAT on solar + battery.

Source: Ofgem, UK BEIS

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

210 kWh

276 kWh

443 kWh

572 kWh

597 kWh

605 kWh

611 kWh

551 kWh

479 kWh

350 kWh

243 kWh

179 kWh

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Month	Energy (kWh)	Irradiation (kWh/m²)
January	210	49
February	276	65
March	443	105
April	572	141
May	597	149
June	605	154
July	611	157
August	551	140
September	479	119
October	350	85
November	243	58
December	179	42
Total	5,117	1,265

Environmental Impact

CO2 Saved Per Year

1,192 kg

Equivalent Trees Planted

54 trees

Optimal Panel Angle

40° tilt

Technical Details

Data Source: EU PVGIS v5.3
Coordinates: 51.57835°N, 0.33208°W
System Loss: 14%
Optimal Inclination: 40°
Optimal Azimuth: -7°
Yearly Irradiation: 1265 kWh/m2
Retail Electricity Price: 0.280 EUR/kWh
Feed-in Tariff: 0.045 EUR/kWh
Install Cost: 1,350 EUR/kWp

€1,441

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