Solar Installers In Perth

Below are reputable solar installers who serve Perth, in Western Australia, along with links to ratings and reviews of their installations. Other useful information about installing solar panels in Perth is below the list.

To get quotes from these installers, select up to 3 businesses and then hit 'Get Quotes From Selected Companies'.

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    Sell Off Grid Systems

    Sell Solar System Upgrade

    Sell Hybrid Systems

    Can Add Batteries to Existing Solar

    Sell Micro Inverters / Power Optimisers

    Can Install an EV Charger

    Does Repairs and Maintenance


    Sell Commercial Solar


    Panel Brands Sold

    Aiko Solar

    Akcome

    Astronergy

    BYD Solar

    Canadian Solar

    EGing

    GCL-Poly Suzhou Energy

    Hyundai Solar

    JA Solar

    Jinko Solar

    LG

    LONGi Solar

    Opal Solar

    Qcells

    REC

    Risen

    Seraphim

    SolarEdge

    SolarWatt

    SunPower

    Suntech

    TW Solar

    Tindo Solar

    Trina

    Winaico


    Inverter Brands Sold

    ABB

    Alpha Technologies

    Delta

    Enphase

    Fimer

    Fronius

    GE

    Goodwe

    Growatt

    Huawei

    Qcells

    SAJ

    SENEC

    SMA

    Selectronic

    SolaX Power

    SolarEdge

    Solis

    Solplanet

    SunPower Corporation

    Sungrow

    Victron Energy

    i-Energy Corporation

    iStore


    Battery Brands Sold

    Alpha-ESS

    BYD

    Enphase Energy

    Fronius

    GenZ Energy

    Goodwe

    Growatt

    Hive

    Huawei

    LG Chem

    PowerPlus Energy

    QCells

    Redback Technologies

    Senec

    SolarEdge

    SolarWatt

    Sonnen

    SunPower

    Sungrow

    Tesla

    iStore

  • Client since Oct 2012

    Solargain

    4.3

    1062 reviews

    $3950 – $5750 For a 6.6kW system

  •  

    Green Wiring

    4.5

    883 reviews

    $3500 – $5065 For a 6.6kW system

  • Client since Mar 2017

    Perth Solar Force

    4.6

    645 reviews

    $3698 – $8400 For a 6.6kW system

  • Client since May 2016

    PSW Energy Perth Solar Warehouse

    4.9

    629 reviews

    $3400 – $14470 For a 6.6kW system

  • Client since Apr 2020

    Koala Solar

    4.9

    479 reviews

    $3390 – $6500 For a 6.6kW system

  • Client since Sep 2018

    Solaire Connect

    4.6

    311 reviews

    $5206 – $9200 For a 6.6kW system

  • Client since Feb 2011

    Advanced Solar Technology

    4.4

    261 reviews

    $4500 – $4700 For a 6.6kW system

  • Client since Jul 2021

    Fritts Solar

    4.9

    241 reviews

    $3790 – $8700 For a 6.6kW system

  • Client since Apr 2022

    Positive Energy Solutions Pty Ltd

    4.9

    215 reviews

    $3600 – $12280 For a 6.6kW system

  • Client since Nov 2020

    AR Energy Consulting

    4.9

    147 reviews

    $4900 – $5807 For a 6.6kW system

  • Client since Jul 2016

    SEM Solar

    4.8

    123 reviews

    $4350 For a 6.6kW system

  • Client since Oct 2019

    Green Choice Electrical

    4.8

    121 reviews

    $4200 – $6560 For a 6.6kW system

  • Client since Apr 2020

    MLEC Solar

    4.4

    95 reviews

    $4500 – $5900 For a 6.6kW system

  • Client since Oct 2020

    JFK Electrical Solar and Air

    4.9

    79 reviews

    $4090 – $5500 For a 6.6kW system

  • Client since Feb 2021

    Kluem Electrical Services Pty Ltd

    4.8

    51 reviews

    $5300 – $7199 For a 6.6kW system

  • Client since Feb 2022

    Vista Electrical Controls

    4.8

    29 reviews

    $3400 – $5999 For a 6.6kW system

  • Client since Apr 2023

    Sundrop Electricals

    4.9

    26 reviews

    $3400 – $5000 For a 6.6kW system

  • Client since Apr 2021

    Statewide Power

    5.0

    1 review

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Perth Climate

Perth, the capital of Western Australia, enjoys a Mediterranean climate with hot, dry summers and mild, wet winters. The average high temperature in January is 30.3°C, while July sees average lows of 8°C. This sunny climate makes Perth an excellent location for solar power.

Solar Energy Potential in Perth

Perth is one of the sunniest cities in Australia, with each kilowatt of solar panels generating approximately 4.61 kilowatt-hours of electricity daily. This makes it an ideal location for solar power systems. A typical 6.6-kilowatt solar system on a north-facing roof in Perth can generate about 27.66 kilowatt-hours of electricity daily or 11,105 kilowatt-hours annually.

The following graph illustrates the solar energy variation across the year, showing the average daily kWh production per installed kW for each month.

Solar Panel Direction and Output in Perth

Solar panels facing north will generally produce the highest electricity output in Perth. However, panels oriented east or west can also be effective, particularly if they better match your household’s electricity usage patterns. East-facing panels generate more energy in the morning while west-facing panels produce more in the afternoon. This alignment can increase the self-consumption of solar power, thus decreasing dependency on grid electricity.

Here is a table that illustrates how different roof directions and tilts impact solar output in Perth compared to the optimal north-facing, 30-degree orientation:

 

 10°20°30°40°50°60°70°80°90°
N 88% 94% 98% 100% 99% 95% 89% 81% 72% 61%
NE 88% 92.5% 95% 95% 94% 90.5% 85% 79% 70.5% 62%
E 88% 88% 87% 84% 81% 77% 72% 66% 60% 54%
SE 88% 83.5% 78% 71.5% 64% 57% 40.5% 44.5% 40% 35.5%
S 88% 82% 74% 65% 55% 46% 38% 31% 26% 24%
SW 88% 84% 78% 71.5% 64.5% 57.5% 51.5% 45.5% 40.5% 36%
W 88% 88% 87% 85% 81% 77% 72% 67% 60% 54%
NW 88% 92.5% 95% 96% 94% 91% 86% 79% 70.5% 62%

 

Maximum Solar System Size in Perth

Perth households with single-phase power can install systems up to 10 kilowatts (kW) with a 5 kW export limit. Homes with three-phase power can install up to 15 kW of solar inverters. Systems over 10 kW may require council approval. These limits refer to the inverter size, not the total solar panel capacity, allowing for oversizing – installing more panels than the inverter's rated capacity. This maximizes solar production during less optimal conditions, enhancing overall efficiency and savings.

Roof Angle and Solar Panel Tilt in Perth

In Perth, the best angle for solar panels is 29 degrees. Most roofs in Australia have a pitch of 15 or 22.5 degrees, though some can be as steep as 30 degrees or more. The difference in electricity output between a shallow 15-degree roof and a steep 45-degree roof is relatively small. Shallow roofs tend to favour energy production in the summer, while steeper roofs are more efficient in winter. For instance, panels on a 45-degree roof generate about 9% less electricity in January and 20% more in July than those on a 15-degree roof.

Solar Feed-In Tariffs in Perth

Feed-in tariffs in Perth are set by Synergy and Horizon Power. Off-peak rates start at 2 cents per kilowatt-hour but in peak times you can get up to 10 cents per exported kWh. The right plan depends on your energy consumption and solar generation patterns. 

Savings from Rooftop Solar Panels in Perth

A Perth household installing a 6.6 kW north-facing solar system can expect substantial savings. With a 2-cent feed-in tariff, an average Perth electricity price of $0.29/kWh and 40% self-consumption, annual savings can reach around $1,421. With a higher feed-in tariff, such as 10 cents, savings can increase to approximately $1,954 annually.

Self-Consumption of Solar Electricity

Maximising self-consumption is essential for enhancing the economic benefits of solar power. This can be achieved by operating appliances like dishwashers, hot water systems, and pool pumps during daylight hours. Additionally, setting air conditioners to cool or heat your home before you return can further increase self-consumption, making the most of the electricity generated by your solar panels.

Solar Uptake in Western Australia

Western Australia has seen significant growth in solar power adoption. 36% of WA homes have solar panels, and it's predicted that half of Perth’s households could have solar panels within the next few years. 

Solar Power as Part of the Energy Mix in Western Australia

As of February 2023 residential solar provides 64% of WA's electricity needs in the middle of the day.

Rooftop solar power systems are a significant part of Western Australia's energy mix, providing a substantial portion of the state's electricity. They help reduce carbon emissions and give households greater control over their electricity costs. Perth’s electricity prices have been increasing since 2017 and are expected to continue rising, making solar power an attractive option for mitigating these costs.

Conclusion

Perth offers excellent solar energy potential with its sunny climate and supportive environment. By choosing a suitable solar system and optimising panel placement, Perth residents can significantly reduce their electricity bills and contribute to a greener future.