Solar panel yield in Watertown

Each kWp of solar panels in Watertown, at the best angle of 39°, produces about 1,419 kWh of electricity a year – worth $275 at today's household electricity price.

Yield per kWp
1,419 kWh
per year
Value per kWp
$275
if used at home, at today's tariff
Versus the United States average
−7%
1,530 kWh
Solar rank in the United States
3,096 of 4,349

Monthly yield of 1 kWp

JanFebMarAprMayJunJulAugSepOctNovDec
Long-term average monthly production (PVGIS), panels facing south at the optimal angle, 14 % system losses.
Show the data as a table
MonthkWh
Jan94
Feb113
Mar138
Apr133
May137
Jun133
Jul138
Aug134
Sep122
Oct105
Nov93
Dec79

A typical 5 kWp home system

A 5 kWp system in Watertown would produce about 7,094 kWh a year – 284% of the 2,500 kWh our default home uses.

Payback

How fast a system pays for itself depends on its price, how much of the power you use yourself and the feed-in tariff. Try your own numbers: Solar payback calculator →

Cost of running a home in Watertown →

Source: PVGIS © European Union, 2001–2026.

Updated: