Compare prices
Home › By postcode area › Watford

Plug-in solar in Watford

In Watford (WD postcodes) a two-panel kit can save you up to £167 a year – £4,164 over 25 years.

Best deal here: DMEGC 950W Hoymiles HiFlow kit – pays for itself in 2.7 yrs.

Get it for £456 ›

A plug-in solar panel on a flat balcony

What a kit makes in Watford

About 914 kWh a year in a sunny garden spot – 5% more than the middle of England.

WherePer yearSaves up to
Garden (ground frame), south914 kWh£167
Balcony railing, south775 kWh£149
House wall, south672 kWh£134
House wall, east468 kWh£100
House wall, west453 kWh£98
Flat roof, south826 kWh£153

Month by month

Jan: 36 kWh madeJan: 28 kWh used at homeJanFeb: 48 kWh madeFeb: 35 kWh used at homeFebMar: 78 kWh madeMar: 54 kWh used at homeMarApr: 103 kWh madeApr: 67 kWh used at homeAprMay: 109 kWh madeMay: 74 kWh used at homeMayJun: 111 kWh madeJun: 75 kWh used at homeJunJul: 111 kWh madeJul: 76 kWh used at homeJulAug: 100 kWh madeAug: 68 kWh used at homeAugSep: 86 kWh madeSep: 57 kWh used at homeSepOct: 61 kWh madeOct: 43 kWh used at homeOctNov: 41 kWh madeNov: 31 kWh used at homeNovDec: 32 kWh madeDec: 25 kWh used at homeDec

made used at home

Sunshine data: PVGIS (EU) for the WD postcode area. Two-panel kit, someone home in the day.

What would you save?

Using the UK average until you add a postcode.
Where would it go?
Which way does it face?
Shade
Is someone home in the day?
Room for
My electricity price
Ofgem price cap average, 1 Oct – 31 Dec 2026.
Only Octopus pays this so far.
£168 a yearThat's £4,209 over 25 years of free sunshine
2.7 yrsto pay for itself
929 kWhfree electricity a year

With the DMEGC 950W Hoymiles HiFlow kit (£456) – the best deal for this spot.

Best deals for this spot

Best deal

DMEGC 950W Hoymiles HiFlow kit

£168saved a year
2.7 yrsto pay back
£456City Plumbing
Get this deal ›
Runner-up

DMEGC 1050W Hoymiles HiFlow kit

£174saved a year
2.8 yrsto pay back
£480City Plumbing
Get this deal ›
Also great

JA Solar 800W balcony & garden kit (2 × 465W)

£167saved a year
2.8 yrsto pay back
£470.95Voltacon Solar
Get this deal ›
Month by month
Jan: 37 kWh madeJan: 28 kWh used at homeJanFeb: 49 kWh madeFeb: 35 kWh used at homeFebMar: 79 kWh madeMar: 54 kWh used at homeMarApr: 104 kWh madeApr: 68 kWh used at homeAprMay: 111 kWh madeMay: 75 kWh used at homeMayJun: 113 kWh madeJun: 76 kWh used at homeJunJul: 113 kWh madeJul: 76 kWh used at homeJulAug: 102 kWh madeAug: 69 kWh used at homeAugSep: 87 kWh madeSep: 58 kWh used at homeSepOct: 62 kWh madeOct: 44 kWh used at homeOctNov: 42 kWh madeNov: 32 kWh used at homeNovDec: 32 kWh madeDec: 25 kWh used at homeDec

made used at home

640 kWh used at home as it's made (69%).

See today's best deals ›