How much will solar panels produce in Ploiești?

A 5 kWp system facing south at 35° tilt in Ploiești produces about 6,467 kWh a year. In a weak year that is 5,390 kWh, in a good one 7,543 kWh — 1,293 kWh per kWp.

That’s about 323% 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 274 kWh, range 162–385FebFebruary: 5 kWp 372 kWh, range 272–472MarMarch: 5 kWp 557 kWh, range 449–664AprApril: 5 kWp 633 kWh, range 456–809MayMay: 5 kWp 685 kWh, range 559–811JunJune: 5 kWp 686 kWh, range 565–806JulJuly: 5 kWp 784 kWh, range 647–921AugAugust: 5 kWp 774 kWh, range 644–903SepSeptember: 5 kWp 650 kWh, range 535–766OctOctober: 5 kWp 511 kWh, range 373–648NovNovember: 5 kWp 302 kWh, range 223–381DecDecember: 5 kWp 265 kWh, range 154–376

kWh per month

A typical day in July

The sunniest month in Ploiești. Output peaks around 11:00 solar time, at about 3.0 kWh in the best hour.

0:006:0012:0018:0023:00 3.0 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 162 274 385
February 272 372 472
March 449 557 664
April 456 633 809
May 559 685 811
June 565 686 806
July 647 784 921
August 644 774 903
September 535 650 766
October 373 511 648
November 223 302 381
December 154 265 376
Year 5,390 6,467 7,543

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 Ploiești?

From November to February the system produces about 1,212 kWh, which is 19% of the year. The weakest month (December) gives roughly 265 kWh.

Is an east-west roof worth it in Ploiești?

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 Ploiești

Ground mount or roof in Ploiești?

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 Ploiești

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