How much will solar panels produce in Dallas?

A 8 kWp system facing south at 35° tilt in Dallas produces about 12,275 kWh a year. In a weak year that is 10,249 kWh, in a good one 14,301 kWh — 1,534 kWh per kWp.

That’s about 117% of a typical home’s yearly use (10,500 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

05001,0001,500JanJanuary: 8 kWp 959 kWh, range 744–1,175FebFebruary: 8 kWp 851 kWh, range 619–1,082MarMarch: 8 kWp 1,121 kWh, range 822–1,420AprApril: 8 kWp 1,050 kWh, range 871–1,228MayMay: 8 kWp 1,054 kWh, range 801–1,306JunJune: 8 kWp 1,079 kWh, range 888–1,270JulJuly: 8 kWp 1,197 kWh, range 989–1,405AugAugust: 8 kWp 1,192 kWh, range 946–1,437SepSeptember: 8 kWp 1,165 kWh, range 906–1,425OctOctober: 8 kWp 1,110 kWh, range 894–1,325NovNovember: 8 kWp 908 kWh, range 714–1,101DecDecember: 8 kWp 814 kWh, range 585–1,043

kWh per month

A typical day in July

The sunniest month in Dallas. Output peaks around 11:00 solar time, at about 4.7 kWh in the best hour.

0:006:0012:0018:0023:00 4.7 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 744 959 1,175
February 619 851 1,082
March 822 1,121 1,420
April 871 1,050 1,228
May 801 1,054 1,306
June 888 1,079 1,270
July 989 1,197 1,405
August 946 1,192 1,437
September 906 1,165 1,425
October 894 1,110 1,325
November 714 908 1,101
December 585 814 1,043
Year 10,249 12,275 14,301

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 Dallas?

From November to February the system produces about 3,532 kWh, which is 28% of the year. The weakest month (December) gives roughly 814 kWh.

Is an east-west roof worth it in Dallas?

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 Dallas

Ground mount or roof in Dallas?

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 Dallas

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