Solar potential in Wonthaggi
Here's what panels on a Wonthaggi roof make, month by month, and what that could mean for your bill.
Updated November 2026 · Litmec Electrical, REC-10383
A 6.6 kW north-facing solar system in Wonthaggi makes about 9,900 kWh a year, about 5% more than Melbourne: around 37 kWh a day in midsummer and 15 kWh a day in June. East or west-facing roofs make about 84% of that.
On a $450 quarterly bill, that could save roughly $600–800 a year. Wonthaggi ranks 86th of the 429 places across Victoria we've modelled for solar output.
Solar output in Wonthaggi
- Output per kW, north
- 1,503 kWh/yr
- Output per kW, east / west
- 1,259 / 1,274
- Compared with Melbourne
- +5%
- Best month, per kW
- 5.6 kWh/day (Jan)
- Worst month, per kW
- 2.3 kWh/day (Jun)
- Council
- Bass Coast Shire
- Postcode
- 3995
- Region
- South Gippsland and Bass Coast
| System | North-facing, kWh/yr | East-facing, kWh/yr | West-facing, kWh/yr | June, kWh/day |
|---|---|---|---|---|
| 6.6 kW | 9,922 | 8,312 | 8,410 | 15.4 |
| 8 kW | 12,026 | 10,075 | 10,194 | 18.7 |
| 10 kW | 15,033 | 12,594 | 12,742 | 23.4 |
| 13.2 kW | 19,844 | 16,624 | 16,819 | 30.9 |
These figures use satellite and weather data for Wonthaggi from 2005 to 2023 and already allow for heat, wiring and inverter losses. They don't know your roof: shade, pitch and the faces available decide the real number. Try the roof calculator for your own direction and pitch.
Solar in South Gippsland and Bass Coast
This is one of the cloudier parts of Victoria in winter, but it still gets good output from spring to autumn. Coastal towns such as Inverloch, Cowes and San Remo need salt-mist rated panels and corrosion-resistant mounting near the water, and many holiday homes have very different summer and winter power use.
South Gippsland and Bass Coast are on the AusNet Services network. Your distributor sets how much you can export and approves the connection; we apply for you before anything is ordered.
Older switchboards
A lot of older housing in Wonthaggi still has ceramic fuses, no safety switches or an old fibrous switchboard backing, and those have to be fixed before solar connects. We're electricians, so the switchboard is checked and any work priced in the quote. Check your switchboard.
New estates
Newer homes in Wonthaggi usually have modern switchboards with room for solar. The design work is in the layout: estate roofs are often split into several smaller faces, and some estates have design guidelines for anything visible from the street.
What solar could save in Wonthaggi
For a home paying $450 a quarter with someone in some days, the calculator suggests a 6.6 kW system saving about $600–800 a year, or $1,000–1,400 with a 10 kWh battery. Your own bill gives a better answer: use the calculator below.
How it works with Litmec
Litmec Electrical is a registered electrical contractor based in Newport, Melbourne, and sells solar and batteries across Victoria. For homes in Wonthaggi we start with a free assessment: your bills, photos of your roof and switchboard, and satellite imagery. You get a written design and quote, we apply to your distributor to connect, and an accredited installer checks the site before anything is installed. Your contract and the 5-year whole-of-system warranty are with Litmec. Not sure what size you need? Try the system finder.
Nearby
- Solar in Cape Paterson9,891 kWh/yr from 6.6 kW
- Solar in Kilcunda9,817 kWh/yr from 6.6 kW
- Solar in Inverloch9,887 kWh/yr from 6.6 kW
- Solar in Venus Bay9,887 kWh/yr from 6.6 kW
- Solar in San Remo9,772 kWh/yr from 6.6 kW
- Solar in Grantville9,438 kWh/yr from 6.6 kW
All towns in South Gippsland and Bass Coast · Solar across Victoria
Check your bill: solar for your Wonthaggi home
A few quick questions, using Wonthaggi's solar output. See the system that fits and what it could save, then get a free design and quote.
Building a new home? Skip the bill and send us your plans
Solar in Wonthaggi: questions
How much power do solar panels make in Wonthaggi?
Each kW of north-facing panels in Wonthaggi makes about 1,503 kWh a year, so a 6.6 kW system makes about 9,900 kWh a year, or 27 kWh a day on average. East or west-facing panels make about 84% of that. (PVGIS satellite data.)
Is solar better in Wonthaggi than in Melbourne?
In the model, panels in Wonthaggi make about 5% more than Melbourne. Wonthaggi ranks 86th of the 429 Victorian locations we've modelled. Roof direction and shade still matter more than location: east or west panels cost about 15%, and a shaded roof can cost more.
Is solar worth it in Wonthaggi?
For most owner-occupied homes with a typical bill, yes. On a $450 quarterly bill with someone home some days, a 6.6 kW system in Wonthaggi could save roughly $600 to $800 a year. Bigger bills, electric heating and daytime loads save more.
Does Litmec install solar in Wonthaggi?
Yes. We sell, design and warrant solar and battery systems across Victoria, including Wonthaggi. We start with a free assessment from your bills and roof photos, and an accredited installer checks the site before installation. Your contract and 5-year warranty are with Litmec Electrical.
Who is the electricity distributor in Wonthaggi?
South Gippsland and Bass Coast are on the AusNet Services network. The distributor sets export limits and approves the connection; we apply on your behalf before the system is ordered.
See what your Wonthaggi roof can do
Free assessment from a registered electrical contractor: your bill, your roof and your switchboard, with a written design and quote.