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Solar potential in Mount Martha

Here's what panels on a Mount Martha roof make, month by month, and what that could mean for your bill.

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Updated November 2026 · Litmec Electrical, REC-10383

A 6.6 kW north-facing solar system in Mount Martha makes about 9,700 kWh a year, about 2% more than Melbourne: around 36 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. Mount Martha ranks 145th of the 429 places across Victoria we've modelled for solar output.

Solar output in Mount Martha

Output per kW, north
1,473 kWh/yr
Output per kW, east / west
1,232 / 1,245
Compared with Melbourne
+2%
Best month, per kW
5.5 kWh/day (Jan)
Worst month, per kW
2.3 kWh/day (Jun)
Council
Mornington Peninsula Shire
Postcode
3934
Region
Mornington Peninsula and Frankston
Mount Martha, north-facingMelbourne (Newport), north-facing
0123456Jan: 5.45 kWh a dayJan: 5.31 kWh a dayJanFeb: 5.14 kWh a dayFeb: 5.02 kWh a dayFebMar: 4.38 kWh a dayMar: 4.3 kWh a dayMarApr: 3.45 kWh a dayApr: 3.39 kWh a dayAprMay: 2.62 kWh a dayMay: 2.61 kWh a dayMayJun: 2.33 kWh a dayJun: 2.27 kWh a dayJunJul: 2.49 kWh a dayJul: 2.48 kWh a dayJulAug: 3.14 kWh a dayAug: 3.1 kWh a dayAugSep: 4.09 kWh a daySep: 3.99 kWh a daySepOct: 4.8 kWh a dayOct: 4.65 kWh a dayOctNov: 5.18 kWh a dayNov: 4.94 kWh a dayNovDec: 5.43 kWh a dayDec: 5.26 kWh a dayDec
Average daily output from 1 kW of panels in Mount Martha compared with Melbourne, by month (kWh). PVGIS 5.3, ERA5 2005–2023, 22.5° pitch, 14% losses.
Modelled for Mount Martha (-38.276, 145.031). Source: PVGIS 5.3 (European Commission Joint Research Centre), ERA5 data 2005–2023, 1 kW of panels with 14% system losses, at a 22.5° pitch. PVGIS.
SystemNorth-facing, kWh/yrEast-facing, kWh/yrWest-facing, kWh/yrJune, kWh/day
6.6 kW9,7208,1318,21815.4
8 kW11,7829,8559,96118.6
10 kW14,72812,31912,45123.3
13.2 kW19,44116,26116,43530.8

These figures use satellite and weather data for Mount Martha 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 Mornington Peninsula and Frankston

The peninsula gets cool sea breezes and mild winters. Many homes are close to the bay or Bass Strait, where salt-mist rated panels and stainless or coated mounting hardware are worth specifying, and holiday homes often have very different summer and winter use.

The Mornington Peninsula and Frankston are on the United Energy network. Your distributor sets how much you can export and approves the connection; we apply for you before anything is ordered.

Salt air near the coast

Parts of Mount Martha are close to the water. Near the coast we specify panels certified for salt-mist exposure (IEC 61701) and corrosion-resistant mounting and fasteners, because standard fittings corrode faster in salt air.

What solar could save in Mount Martha

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, about 50 km from Mount Martha. Site visits are free. We sell the system, design it from your bills, organise the paperwork, rebates and network approval, and stand behind the whole system with a 5-year warranty. Accredited installers we subcontract and supervise fit the panels, and our own electricians do any switchboard work. Not sure what size you need? Try the system finder.

Nearby

All towns in the Mornington Peninsula and Frankston · Solar across Victoria

Check your bill: solar for your Mount Martha home

A few quick questions, using Mount Martha'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

  1. 1 Your bill
  2. 2 Your home
  3. 3 Your estimate
  4. 4 Roof and plans
  5. 5 Your details
Step 1: your bill

How much is your power bill?

Your bill covers
Got your bill handy? Use your exact figures
Step 2: your home

A bit about your home

Is anyone home during the day?
Do you already have solar?
Anything coming up? (tick any)
Power supply (check your switchboard or bill)

Your estimate

    How we worked this out

    We estimate your daily use from your bill and rates (about 30c per kWh and $1.10 a day supply unless you entered your own), then add typical loads for anything you ticked: about 6 kWh a day for an electric car, 4 for a pool pump and 6 for moving off gas.

    Solar output uses Melbourne's yearly average of about 3.5 kWh a day for each kW of panels. How much of it you use directly depends on who's home in the day; the rest charges a battery or is exported at about 4c per kWh.

    This is an indicative yearly average, not a quote. Roof direction, shading, your tariff and how you use power all change the result. An installer confirms every figure once they've seen your roof.

    Next: a few questions about your roof About a minute. Your answers and this estimate go to the installer, so you don't have to explain it all again.
    Step 4: your roof and plans

    Your roof and plans

    A few quick taps so an installer knows what they're looking at. If you're not sure, pick "Not sure" or skip it.

    What are you after?
    When would you like it done?
    What kind of home is it?
    How many storeys? (installers need this for safety gear and access)
    What's the roof made of? (have a look from the street)
    Does anything shade the roof? (trees, a taller house next door, a chimney)
    Roughly when was the home built? (older homes often need switchboard work first)
    What matters most to you? (tick any)
    How are you thinking of paying? (Solar Victoria offers interest-free loans to eligible homes)
    Step 5: your details

    Your details

    We'll call to book your free site visit, or outside about 100 km of Newport, a free assessment from your bill and roof photos. Your estimate and answers come with your details, so you won't have to explain it all again.

    How would you like to be contacted?

    Free and no obligation. We only contact you about this enquiry.

    Solar in Mount Martha: questions

    How much power do solar panels make in Mount Martha?

    Each kW of north-facing panels in Mount Martha makes about 1,473 kWh a year, so a 6.6 kW system makes about 9,700 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 Mount Martha than in Melbourne?

    In the model, panels in Mount Martha make about 2% more than Melbourne. Mount Martha ranks 145th 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 Mount Martha?

    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 Mount Martha could save roughly $600 to $800 a year. Bigger bills, electric heating and daytime loads save more.

    Does Litmec install solar in Mount Martha?

    Yes. Mount Martha is about 50 km from our base in Newport. Site visits are free, and your contract and 5-year whole-of-system warranty are with Litmec Electrical.

    Who is the electricity distributor in Mount Martha?

    The Mornington Peninsula and Frankston are on the United Energy network. The distributor sets export limits and approves the connection; we apply on your behalf before the system is ordered.

    See what your Mount Martha roof can do

    Free site visit from a licensed electrician: roof, shading and switchboard checked, options walked through.

    Get my free system design Call 0402 721 816