How much energy do solar panels produce in Watford?

A 5 kWp solar panel system in Watford, United Kingdom produces approximately 5,095 kWh per year, based on EU PVGIS data.

How much can you save with solar panels in Watford?

A 5 kWp system without battery saves approximately €505 per year (accounting for 23% self-consumption and feed-in tariff for surplus). The payback period is 13.4 years.

What is the optimal panel angle in Watford?

The optimal tilt angle for solar panels in Watford is 40 degrees facing -5 degrees from south.

Solar Panels in Watford

United Kingdom · 51.66°N, 0.40°W

Solar Potential

Moderate

1,019 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

5,095kWh

Net Annual Savings

€505

Payback Period

13.4 yrs

25-Year Net

€9,418

Savings Breakdown

Self-consumed (23% of 5,095 kWh)1,172 kWh × 0.280 €/kWh

→ Savings from own usage+€328

Injected to grid (77% of production)3,923 kWh × 0.045 €/kWh

→ Feed-in revenue+€177

Net Annual Savings€505

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

209 kWh

274 kWh

438 kWh

570 kWh

595 kWh

603 kWh

607 kWh

553 kWh

478 kWh

344 kWh

241 kWh

184 kWh

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Month	Energy (kWh)	Irradiation (kWh/m²)
January	209	49
February	274	64
March	438	104
April	570	140
May	595	149
June	603	153
July	607	156
August	553	141
September	478	119
October	344	83
November	241	57
December	184	43
Total	5,095	1,258

Environmental Impact

CO2 Saved Per Year

1,187 kg

Equivalent Trees Planted

54 trees

Optimal Panel Angle

40° tilt

Technical Details

Data Source: EU PVGIS v5.3
Coordinates: 51.65531°N, 0.39602°W
System Loss: 14%
Optimal Inclination: 40°
Optimal Azimuth: -5°
Yearly Irradiation: 1258 kWh/m2
Retail Electricity Price: 0.280 EUR/kWh
Feed-in Tariff: 0.045 EUR/kWh
Install Cost: 1,350 EUR/kWp

€1,429

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