How much will solar panels produce in Constanța?

A 5 kWp system facing south at 35° tilt in Constanța produces about 6,772 kWh a year. In a weak year that is 5,637 kWh, in a good one 7,908 kWh — 1,355 kWh per kWp.

That’s about 339% of a typical home’s yearly use (2,000 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

02505007501,000JanJanuary: 5 kWp 300 kWh, range 225–375FebFebruary: 5 kWp 375 kWh, range 267–484MarMarch: 5 kWp 514 kWh, range 397–632AprApril: 5 kWp 633 kWh, range 498–768MayMay: 5 kWp 764 kWh, range 630–898JunJune: 5 kWp 763 kWh, range 623–902JulJuly: 5 kWp 839 kWh, range 693–986AugAugust: 5 kWp 841 kWh, range 698–984SepSeptember: 5 kWp 694 kWh, range 570–817OctOctober: 5 kWp 539 kWh, range 393–684NovNovember: 5 kWp 284 kWh, range 216–352DecDecember: 5 kWp 283 kWh, range 186–380

kWh per month

A typical day in August

The sunniest month in Constanța. Output peaks around 11:00 solar time, at about 3.2 kWh in the best hour.

0:006:0012:0018:0023:00 3.2 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 225 300 375
February 267 375 484
March 397 514 632
April 498 633 768
May 630 764 898
June 623 763 902
July 693 839 986
August 698 841 984
September 570 694 817
October 393 539 684
November 216 284 352
December 186 283 380
Year 5,637 6,772 7,908

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 Constanța?

From November to February the system produces about 1,243 kWh, which is 18% of the year. The weakest month (December) gives roughly 283 kWh.

Is an east-west roof worth it in Constanța?

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 Constanța

Ground mount or roof in Constanța?

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 Constanța

Your roof is not an average roof

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

Calculate for my roof

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