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The Palace of Culture in Iași, facade photographed from the side on a summer evening

Romania · 10 kWp reference system

Iași solar forecast

Photo: Andrei Lucian Vaida, CC BY-SA 4.0. Cropped, resized and converted to WebP by GridPassport.

Wednesday, August 5, 2026

About 53.0 kWh tomorrow

For a standard 10 kWp south-facing system in Iași, GridPassport estimates 53.0 kWh on Wednesday, August 5, 2026, with a likely range of 45.6-57.4 kWh. The strongest production window is expected at 12:00-16:00 local time.

Updated Aug 4, 2026, 09:53 PM GMT+3 · fresh snapshot
Likely range
45.6-57.4 kWh
Strongest window
12:00-16:00
Confidence
high
Forecast my solar output

Typical year

Solar production month by month in Iași

A standard 10 kWp system produces about 12,106 kWh in a typical year at this location. Monthly averages show seasonality; they are not a forecast for a specific year.

Values are kWh per month. Source: European Commission JRC PVGIS.

What makes Iași's solar profile different? The typical annual yield is about 1,211 kWh per installed kWp, ranking Iași #5 of 6 modelled locations in Romania. That is 2% below the median of the 6 Romania locations in this dataset. July is typically the strongest month and December the weakest; the stronger month produces about 3.6 times as much.

See the 12-month data
MonthMonthly outputDaily averageYear-to-year variation
MonthJanuary Monthly output456 kWh Daily average14.7 kWh/day Year-to-year variation±105 kWh
MonthFebruary Monthly output638 kWh Daily average22.8 kWh/day Year-to-year variation±135 kWh
MonthMarch Monthly output1,044 kWh Daily average33.7 kWh/day Year-to-year variation±166 kWh
MonthApril Monthly output1,201 kWh Daily average40.0 kWh/day Year-to-year variation±168 kWh
MonthMay Monthly output1,370 kWh Daily average44.2 kWh/day Year-to-year variation±120 kWh
MonthJune Monthly output1,365 kWh Daily average45.5 kWh/day Year-to-year variation±122 kWh
MonthJuly Monthly output1,475 kWh Daily average47.6 kWh/day Year-to-year variation±85 kWh
MonthAugust Monthly output1,450 kWh Daily average46.8 kWh/day Year-to-year variation±130 kWh
MonthSeptember Monthly output1,205 kWh Daily average40.1 kWh/day Year-to-year variation±152 kWh
MonthOctober Monthly output950 kWh Daily average30.6 kWh/day Year-to-year variation±158 kWh
MonthNovember Monthly output540 kWh Daily average18.0 kWh/day Year-to-year variation±92 kWh
MonthDecember Monthly output412 kWh Daily average13.3 kWh/day Year-to-year variation±133 kWh

Nearby solar forecasts

Compare Iași with nearby cities

BălțiMoldova 52.2 kWh OrheiMoldova 50.7 kWh ChișinăuMoldova 51.1 kWh

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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.

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