How much will solar panels produce in Iași?

A 5 kWp system facing south at 35° tilt in Iași produces about 6,171 kWh a year. In a weak year that is 5,162 kWh, in a good one 7,180 kWh — 1,234 kWh per kWp.

That’s about 309% of a typical home’s yearly use (2,000 kWh).

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Based on 2014–2023 satellite weather data

Production by month

02505007501,000JanJanuary: 5 kWp 194 kWh, range 129–259FebFebruary: 5 kWp 307 kWh, range 228–387MarMarch: 5 kWp 523 kWh, range 424–622AprApril: 5 kWp 609 kWh, range 464–754MayMay: 5 kWp 701 kWh, range 561–842JunJune: 5 kWp 704 kWh, range 573–835JulJuly: 5 kWp 778 kWh, range 643–913AugAugust: 5 kWp 789 kWh, range 655–923SepSeptember: 5 kWp 650 kWh, range 521–780OctOctober: 5 kWp 482 kWh, range 374–590NovNovember: 5 kWp 229 kWh, range 167–290DecDecember: 5 kWp 200 kWh, range 126–274

kWh per month

A typical day in August

The sunniest month in Iași. Output peaks around 11:00 solar time, at about 3.1 kWh in the best hour.

0:006:0012:0018:0023:00 3.1 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 129 194 259
February 228 307 387
March 424 523 622
April 464 609 754
May 561 701 842
June 573 704 835
July 643 778 913
August 655 789 923
September 521 650 780
October 374 482 590
November 167 229 290
December 126 200 274
Year 5,162 6,171 7,180

The months don’t add up exactly to the yearly figure, because each one is the typical value across many years.

Common questions

How much do solar panels produce in winter in Iași?

From November to February the system produces about 929 kWh, which is 15% of the year. The weakest month (January) gives roughly 194 kWh.

Is an east-west roof worth it in Iași?

An east-west system typically produces 10–25% less per kWp than one facing south, but spreads production more evenly through the day. The exact difference depends on tilt and shading.

Compare an east-west roof for Iași

Ground mount or roof in Iași?

A ground mount can be tilted and aimed freely, which can add some yield, but it costs more and needs space. Compare both for your own plot.

Check a ground-mounted system in Iași

Your roof is not an average roof

Set your own tilt, direction, shading and inverter limit and get a range for your address.

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Climate data: Photovoltaic Geographical Information System (PVGIS) — European Commission, Joint Research Centre