Gridly
NSW 2540 · Shoalhaven
Solar Panel Installation in Erowal Bay, NSW
Find a vetted solar installer in Erowal Bay. Compare quotes, check local solar data, and get a system designed for your roof.
Get Free Solar QuotesSolar Snapshot for Erowal Bay
Key data for sizing a solar system in Erowal Bay, NSW 2540.
4.3/day
Peak Sun Hours
8,287
Est. Annual Output (6.6 kW)
$1,284
Est. Annual Savings
4.2 yrs
Est. Payback (6.6 kW)
$2,808
STC Rebate (6.6 kW)
Zone 3
Dwelling Mix in Erowal Bay
Breakdown of dwelling types based on census data — relevant for understanding rooftop solar potential.
Houses
90%
16,797 dwellings
Townhouses
6%
1,170 dwellings
Apartments
2%
315 dwellings
Erowal Bay is predominantly freestanding houses, ideal for rooftop solar installation.
Solar Adoption in Erowal Bay 2540
Installation data from the Clean Energy Regulator, refreshed monthly.
11,327
Solar Systems Installed
Since 2001
6.4 kW
Avg System Size
72.1 MW
Total Installed Capacity
1,146
Battery Systems
Erowal Bay (2540) has 11,327 registered solar panel installations with a combined capacity of 72.1 MW. The average system size in this postcode is 6.4 kW.
Installations fell 20% in 2025 compared to 2024's 878 systems.
Is Solar Worth It in Erowal Bay?
Erowal Bay gets 4.3 peak sun hours per day — slightly below the national average. A 6.6 kW system here would produce roughly 8,287 kWh per year, saving an estimated $1,284 annually and paying itself off in 4.2 years.
At $5,392 after rebates, the upfront cost represents 8% of Erowal Bay's median household income ($66,300/year). Most households finance this over 3–5 years, with loan repayments typically offset by immediate savings.
A 4.2-year payback is solid by Australian standards. After that, every kilowatt-hour your system generates is essentially free electricity for the remaining 15–20 years of the system’s life.
Why Install Solar in Erowal Bay?
Erowal Bay receives 4.3 peak sun hours daily. While this is lower than northern states, a well-sized system still generates significant savings. A 6.6 kW system can produce around 8,287 kWh per year, saving approximately $1,284 annually.
NSW households pay some of the highest electricity rates in Australia at around 35c/kWh, making solar an especially strong investment.
The median household income in Erowal Bay is $66,300 per year. At $5,392 after rebates, a 6.6 kW system represents 8% of annual household income, with savings that continue for 20+ years after the 4.2-year payback.
Estimated Solar Output & Payback in Erowal Bay
Based on 4.3 peak sun hours/day, 35c/kWh electricity, and STC Zone 3 rebate.
| System Size | Annual Output | Annual Savings | Cost After Rebate | Payback |
|---|---|---|---|---|
| 5 kW | 6,278 kWh | $973 | $4,355 $2,145 STC rebate | 4.5 yrs |
| 6.6 kW Most popular | 8,287 kWh | $1,284 | $5,392 $2,808 STC rebate | 4.2 yrs |
| 10 kW | 12,556 kWh | $1,946 | $7,210 $4,290 STC rebate | 3.7 yrs |
| 13 kW | 16,323 kWh | $2,530 | $8,923 $5,577 STC rebate | 3.5 yrs |
Estimates assume 80% system efficiency, 35% self-consumption rate, 5c/kWh feed-in tariff, and STC Zone 3 ($39/STC, 8-year deeming period). Actual results vary based on roof orientation, shading, and usage patterns.
Solar Rebates in New South Wales
Available incentives that reduce the cost of solar installation in NSW.
Small-scale Technology Certificates (STCs) provide an upfront discount worth $2,500 to $4,000 depending on system size and location.
NSW Peak Demand Reduction Scheme offers incentives for solar-battery systems that reduce evening grid load.
Popular Solar Panels
Top-rated panels available for installation in Erowal Bay.
Solahart Silhouette Series
455W, 22.8% efficiency
$165
Solahart SunCell Series
440W, 22% efficiency
$140
Canadian Solar TOPHiKu 6
440W, 22.5% efficiency
$130
Trina Solar Vertex S+
440W, 22% efficiency
$120
How Solar Installation Works
Site Assessment and Quote
An installer visits your property, assesses your roof, checks shading, and provides a detailed quote based on your energy usage.
System Design and Approval
Your system is designed to maximise output. Council approval may be needed for heritage properties, but most residential installs are exempt.
Installation
A residential solar installation typically takes one day. The team mounts panels, installs the inverter, and connects the wiring.
Grid Connection and Meter
Your installer lodges paperwork with your distributor. Once approved, your meter is upgraded to a bi-directional meter and you start exporting.
Frequently Asked Questions
How many peak sun hours does Erowal Bay get? ▼
Erowal Bay receives approximately 4.3 peak sun hours per day, based on its cool temperate climate zone. This means a standard 6.6 kW system can generate around 8,287 kWh annually.
What size solar system do I need in Erowal Bay? ▼
The right system size depends on your electricity usage. Average household consumption in New South Wales is 18 to 22 kWh per day. A 6.6 kW system suits most homes, while larger households or those with pools or EV chargers may benefit from a 10 kW or 13 kW system.
How much does solar installation cost in Erowal Bay? ▼
A 6.6 kW solar system in Erowal Bay costs approximately $8,200 before rebates. Erowal Bay is in STC Zone 3, which provides a rebate of $2,808 on a 6.6 kW system. After rebates, expect to pay around $5,392.
What is the payback period for solar in Erowal Bay? ▼
A 6.6 kW solar system in Erowal Bay has an estimated payback period of 4.2 years, based on 4.3 peak sun hours per day and annual savings of $1,284. After the payback period, the system continues generating free electricity for its remaining 20+ year lifespan.
Do I need council approval for solar in Erowal Bay? ▼
In most of NSW, residential solar installations are classified as exempt development and do not require council approval. Heritage-listed properties or conservation areas in Shoalhaven may have additional requirements. Your installer will advise during the site assessment.
How Erowal Bay Compares to Nearby Suburbs
Solar potential compared with neighbouring suburbs in the Shoalhaven area.
| Suburb | Sun Hours | 6.6 kW Output | Payback | Solar Adoption |
|---|---|---|---|---|
| Erowal Bay 2540 | 4.3h | 8,287 kWh | 4.2 yrs | — |
| Coolangatta 2535 | 4.3h | 8,287 kWh | 4.2 yrs | — |
| Shoalhaven Heads 2535 | 4.3h | 8,287 kWh | 4.2 yrs | — |
| Greenwell Point 2540 | 4.3h | 8,287 kWh | 4.2 yrs | — |
| Nowra 2541 | 4.3h | 8,287 kWh | 4.2 yrs | — |
All estimates assume a 6.6 kW system. Sun hours, output, and payback are based on the same methodology. Solar adoption shows CER-registered installations as a percentage of dwellings.
Nearby Suburbs
Solar installers in suburbs near Erowal Bay.
Related Products
Data sources: Clean Energy Regulator (installation counts), ABS 2021 Census (population and dwellings), Bureau of Meteorology (solar exposure). Solar output estimates assume north-facing panels with no shading. Electricity rates are state averages and may differ from your retailer's pricing. Get a personalised quote for accurate savings.