Solar panel yield in Carmarthen

Each kWp of solar panels in Carmarthen, at the best angle of 38°, produces about 948 kWh of electricity a year – worth £320 at today's household electricity price.

Yield per kWp
948 kWh
per year
Value per kWp
£320
if used at home, at today's tariff
Versus the United Kingdom average
−5%
1,002 kWh
Solar rank in the United Kingdom
888 of 1,133

Monthly yield of 1 kWp

JanFebMarAprMayJunJulAugSeptOctNovDec
Long-term average monthly production (PVGIS), panels facing south at the optimal angle, 14 % system losses.
Show the data as a table
MonthkWh
Jan35
Feb50
Mar84
Apr113
May120
Jun118
Jul112
Aug102
Sept86
Oct59
Nov41
Dec29

A typical 5 kWp home system

A 5 kWp system in Carmarthen would produce about 4,740 kWh a year – 190% 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 Carmarthen →

Source: PVGIS © European Union, 2001–2026.

Updated: