Dated, weather-based
Tomorrow's forecast
Tomorrow's value is a weather-based estimate for Monday, October 5, 2026: 42.8 kWh from the 10 kWp reference system, with a likely range of 36.1 kWh–45.9 kWh. It changes with the next weather forecast.
United Kingdom · 10 kWp reference system
Plymouth solar forecast and PV yield
Forecast target: . Any “tomorrow” label on this page refers to this dated target.
- Tomorrow's forecast
- 42.8 kWh 10 kWp reference system
- Typical annual output
- 11,212 kWh 10 kWp reference system
- Typical specific yield
- 1,121 kWh/kWp Per year
Monday, October 5, 2026
About 42.8 kWh tomorrow
For a standard 10 kWp south-facing system in Plymouth, GridPassport estimates 42.8 kWh on Monday, October 5, 2026, with a likely range of 36.1-45.9 kWh. The strongest production window is expected at 12:00-16:00 local time.
Updated Oct 4, 2026, 10:01 PM GMT+1 · Automatically refreshed- Likely range
- 36.1-45.9 kWh
- Strongest window
- 12:00-16:00
- Confidence
- high
How to read and use the data
Plymouth solar forecast: daily weather versus long-term PV yield
The daily and annual figures answer different questions. Use the dated forecast to plan tomorrow, and the PVGIS specific yield to compare locations or estimate a typical year.
Multi-year climate baseline
PVGIS specific yield
Plymouth's PVGIS specific yield is about 1,121 kWh/kWp per year. It is a multi-year climate benchmark, not a prediction for tomorrow or for this calendar year. In the PVGIS profile, May is typically the strongest month and December the weakest.
3, 5 and 10 kWp reference systems
Scale the same assumptions to your system size
SystemTomorrow estimate (likely range)PVGIS typical year
3 kWpTomorrow estimate (likely range)12.8 kWh10.8 kWh–13.8 kWhPVGIS typical year3,363 kWh/year
5 kWpTomorrow estimate (likely range)21.4 kWh18.1 kWh–22.9 kWhPVGIS typical year5,606 kWh/year
10 kWpTomorrow estimate (likely range)42.8 kWh36.1 kWh–45.9 kWhPVGIS typical year11,212 kWh/year
Linear reference scaling only: south-facing, 35° tilt and 14% system losses. It does not resize inverter clipping, shade or local roof constraints.
From forecast to a household plan
Battery, EV, heat pump and flexible loads
Treat the forecast as a gross solar-energy budget before household base load and conversion losses. The numbers support scheduling; they do not guarantee surplus.
Battery
Keep room for the solar window
Use 12:00-16:00 as the first candidate charging window. Battery state of charge, reserve settings and inverter limits still decide how much can be stored.
EV
Compare the charge with the 5 kWp budget
The scaled 5 kWp estimate is 21.4 kWh before household use. Compare the remainder after base load with the planned EV charge and stagger charging if needed.
Heat pump
Shift only flexible thermal demand
If comfort controls allow it, place discretionary hot-water heating or pre-heating inside 12:00-16:00. Never override frost protection, hygiene cycles or manufacturer limits.
Large loads
Avoid stacking appliances
A 3 kWp system scales to about 12.8 kWh for the day before household use. Run flexible loads sequentially during the strongest hours rather than assuming all forecast energy is simultaneous power.
Local questions
Solar forecast FAQ
How much could a 5 kWp solar system produce tomorrow in Plymouth?
Using the same south-facing, 35-degree and 14% loss assumptions, the 5 kWp estimate is 21.4 kWh for Monday, October 5, 2026, with a scaled likely range of 18.1 kWh–22.9 kWh. This is a linear reference-system estimate, not a site survey.
What does 1,121 kWh/kWp mean for Plymouth?
It means the PVGIS multi-year profile produces about 1,121 kWh in a typical year for each installed kWp under the reference assumptions. A 5 kWp system therefore scales to about 5,606 kWh in a typical year before site-specific adjustments.
Is the Plymouth forecast the same as the PVGIS annual estimate?
No. Tomorrow's forecast uses dated weather and an uncertainty band for one day. The PVGIS figure is a multi-year climate-based specific yield used for typical monthly and annual comparisons.
When should a battery, EV or heat pump use solar in Plymouth?
Start with 12:00-16:00, then check household base load, battery headroom, EV energy required and heat-pump safety or comfort constraints. The forecast estimates daily energy, not guaranteed instantaneous surplus.
Typical year
Solar production month by month in Plymouth
A standard 10 kWp system produces about 11,212 kWh in a typical year at this location. Monthly averages show seasonality; they are not a forecast for a specific year.
412Jan
594Feb
955Mar
1293Apr
1382May
1379Jun
1355Jul
1253Aug
1035Sep
706Oct
487Nov
361Dec
Values are kWh per month. Source: European Commission JRC PVGIS.
What makes Plymouth's solar profile different?The typical annual yield is about 1,121 kWh per installed kWp, ranking Plymouth #3 of 32 modelled locations in United Kingdom. That is 10% above the median of the 32 United Kingdom locations in this dataset. May is typically the strongest month and December the weakest; the stronger month produces about 3.8 times as much.
See the 12-month data
MonthMonthly outputDaily averageYear-to-year variation
MonthJanuaryMonthly output412 kWhDaily average13.3 kWh/dayYear-to-year variation±67 kWh
MonthFebruaryMonthly output594 kWhDaily average21.2 kWh/dayYear-to-year variation±85 kWh
MonthMarchMonthly output955 kWhDaily average30.8 kWh/dayYear-to-year variation±160 kWh
MonthAprilMonthly output1,293 kWhDaily average43.1 kWh/dayYear-to-year variation±146 kWh
MonthMayMonthly output1,382 kWhDaily average44.6 kWh/dayYear-to-year variation±131 kWh
MonthJuneMonthly output1,379 kWhDaily average46.0 kWh/dayYear-to-year variation±155 kWh
MonthJulyMonthly output1,355 kWhDaily average43.7 kWh/dayYear-to-year variation±109 kWh
MonthAugustMonthly output1,253 kWhDaily average40.4 kWh/dayYear-to-year variation±132 kWh
MonthSeptemberMonthly output1,035 kWhDaily average34.5 kWh/dayYear-to-year variation±87 kWh
MonthOctoberMonthly output706 kWhDaily average22.8 kWh/dayYear-to-year variation±78 kWh
MonthNovemberMonthly output487 kWhDaily average16.2 kWh/dayYear-to-year variation±64 kWh
MonthDecemberMonthly output361 kWhDaily average11.6 kWh/dayYear-to-year variation±70 kWh
Nearby solar forecasts
Compare Plymouth with nearby cities
Tomorrow, in one email
Get Plymouth's solar forecast by email
Tomorrow's expected production, likely range and strongest hours. One useful email each day.
Method and data
Every city uses a 10 kWp system facing south at 35 degrees with 14% system losses. Tomorrow's figure combines hourly weather with GridPassport's PV production and uncertainty model. The monthly profile uses the European Commission JRC PVGIS multi-year climate series. Roof direction, shade, snow, dirt, inverter clipping and local weather can change real output.
CSV and JSON snapshots are published under CC BY 4.0 with source attribution.