How much will solar panels produce in Hamilton?

A 5 kWp system facing north at 35° tilt in Hamilton produces about 6,821 kWh a year. In a weak year that is 5,675 kWh, in a good one 7,966 kWh — 1,364 kWh per kWp.

That’s about 97% of a typical home’s yearly use (7,000 kWh).

Calculate for my roof

Based on 2014–2023 satellite weather data

Production by month

02505007501,000JanJanuary: 5 kWp 758 kWh, range 589–928FebFebruary: 5 kWp 628 kWh, range 469–786MarMarch: 5 kWp 651 kWh, range 536–766AprApril: 5 kWp 514 kWh, range 413–615MayMay: 5 kWp 476 kWh, range 389–563JunJune: 5 kWp 382 kWh, range 300–464JulJuly: 5 kWp 429 kWh, range 348–510AugAugust: 5 kWp 498 kWh, range 407–589SepSeptember: 5 kWp 554 kWh, range 451–657OctOctober: 5 kWp 639 kWh, range 523–755NovNovember: 5 kWp 659 kWh, range 548–770DecDecember: 5 kWp 702 kWh, range 559–845

kWh per month

A typical day in January

The sunniest month in Hamilton. Output peaks around 12:00 solar time, at about 2.9 kWh in the best hour.

0:006:0012:0018:0023:00 2.9 0

Month by month

Month Weak year, kWh Typical year, kWh Good year, kWh
January 589 758 928
February 469 628 786
March 536 651 766
April 413 514 615
May 389 476 563
June 300 382 464
July 348 429 510
August 407 498 589
September 451 554 657
October 523 639 755
November 548 659 770
December 559 702 845
Year 5,675 6,821 7,966

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 Hamilton?

From May to August the system produces about 1,785 kWh, which is 26% of the year. The weakest month (June) gives roughly 382 kWh.

Is an east-west roof worth it in Hamilton?

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

Compare an east-west roof for Hamilton

Ground mount or roof in Hamilton?

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 Hamilton

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