Solar potential in Rainbow
Here's what panels on a Rainbow 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 Rainbow makes about 10,200 kWh a year, about 8% more than Melbourne: around 37 kWh a day in midsummer and 17 kWh a day in June. East or west-facing roofs make about 88% of that.
On a $450 quarterly bill, that could save roughly $600–800 a year. Rainbow ranks 40th of the 429 places across Victoria we've modelled for solar output.
Solar output in Rainbow
- Output per kW, north
- 1,546 kWh/yr
- Output per kW, east / west
- 1,356 / 1,298
- Compared with Melbourne
- +8%
- Best month, per kW
- 5.6 kWh/day (Jan)
- Worst month, per kW
- 2.5 kWh/day (Jun)
- Council
- Hindmarsh Shire
- Postcode
- 3424
- Region
- Wimmera and Grampians
| System | North-facing, kWh/yr | East-facing, kWh/yr | West-facing, kWh/yr | June, kWh/day |
|---|---|---|---|---|
| 6.6 kW | 10,204 | 8,953 | 8,569 | 16.6 |
| 8 kW | 12,368 | 10,852 | 10,387 | 20.2 |
| 10 kW | 15,460 | 13,565 | 12,984 | 25.2 |
| 13.2 kW | 20,407 | 17,906 | 17,139 | 33.3 |
These figures use satellite and weather data for Rainbow 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 the Wimmera and Grampians
The Wimmera is dry, sunny and hot in summer, with clear winter days, so yearly output is well above Melbourne's. Farm properties, sheds and pumps are common, and homes at the end of long rural lines often face tighter export limits, which makes self-use and batteries more important.
The Wimmera is on the Powercor network. Your distributor sets how much you can export and approves the connection; we apply for you before anything is ordered.
Hot summers, high output
Rainbow gets more sun than Melbourne, and summer air conditioning lines up with peak solar output, which is where the biggest savings come from. Panels lose a little efficiency on the hottest days, so we allow for heat in the design, leave airflow under the panels and keep inverters out of direct afternoon sun.
Acreage, sheds and pumps
Around Rainbow, many properties have sheds, bores or pumps and long distances between buildings. Panels can go on a shed roof or a ground frame, cable runs are designed to keep voltage drop within the wiring rules, and daytime pumping is one of the cheapest ways to use your own solar. Some rural lines (including SWER lines) have tight export limits, which we confirm before you commit. Solar for rural properties.
Backup when the power goes out
Properties around Rainbow can be on long rural lines that are exposed to storms and bushfire. Standard solar switches off in a blackout; a battery with backup wiring keeps the fridge, lights, internet and water pump running. How battery backup works.
What solar could save in Rainbow
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 $1,050–1,400 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 Rainbow 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 Jeparit10,089 kWh/yr from 6.6 kW
- Solar in Hopetoun10,427 kWh/yr from 6.6 kW
- Solar in Beulah10,313 kWh/yr from 6.6 kW
- Solar in Warracknabeal10,060 kWh/yr from 6.6 kW
- Solar in Nhill9,897 kWh/yr from 6.6 kW
- Solar in Dimboola10,045 kWh/yr from 6.6 kW
All towns in the Wimmera and Grampians · Solar across Victoria
Check your bill: solar for your Rainbow home
A few quick questions, using Rainbow'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 Rainbow: questions
How much power do solar panels make in Rainbow?
Each kW of north-facing panels in Rainbow makes about 1,546 kWh a year, so a 6.6 kW system makes about 10,200 kWh a year, or 28 kWh a day on average. East or west-facing panels make about 88% of that. (PVGIS satellite data.)
Is solar better in Rainbow than in Melbourne?
In the model, panels in Rainbow make about 8% more than Melbourne. Rainbow ranks 40th 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 Rainbow?
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 Rainbow could save roughly $600 to $800 a year. Bigger bills, electric heating and daytime loads save more.
Does Litmec install solar in Rainbow?
Yes. We sell, design and warrant solar and battery systems across Victoria, including Rainbow. 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.
Can solar keep my power on during outages in Rainbow?
Only with a battery designed for backup. Standard solar shuts down in a blackout. A backup-capable battery keeps chosen circuits, such as the fridge, lights, internet and water pump, running, and the panels recharge it in daylight.
Who is the electricity distributor in Rainbow?
The Wimmera is on the Powercor network. The distributor sets export limits and approves the connection; we apply on your behalf before the system is ordered.
See what your Rainbow roof can do
Free assessment from a registered electrical contractor: your bill, your roof and your switchboard, with a written design and quote.