A 3kW solar system in Westmead generates approximately 12.2 kWh per day, or 4,468 kWh per year. Westmead averages STC Zone 3, networked by Ausgrid, Endeavour Energy, or Essential Energy (by area). That's enough to cover the electricity needs of a small household or apartment. With New South Wales' excellent solar resources and the federal Small-scale Technology Certificate (STC) rebate, now is a great time to invest in solar. At MrSolar, we connect you with up to three CEC-accredited installers in Westmead, so you can compare quotes and find the best deal. No pushy sales, just free, obligation-free quotes from vetted professionals.
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Indicative 2026 pricing in Westmead: a typical 6.6kW system often quotes around $5,500–$8,000 after the STC discount (competitive NSW metro; varies by roof, brand and export limits). See our solar cost guide.
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In Westmead (NSW), shortlist CEC-accredited designers and installers who already work with Ausgrid, Endeavour Energy, or Essential Energy (by area). Every written quote should show: (1) STC pass-through for Zone 3 with the as-of date, (2) expected export limits on your street, (3) panel and inverter models from the CEC approved product lists, and (4) a workmanship warranty of at least five years on top of manufacturer warranties. Compare feed-in assumptions against local retailer offers around 2-8c/kWh, and treat optimistic bill-savings claims with caution unless self-consumption is modelled from your interval data. Most NSW councils treat compliant rooftop solar as exempt development under the State Environmental Planning Policy (Exempt and Complying Development Codes). Confirm heritage overlays and strata by-laws before install. Compare at least three quotes side by side before paying a deposit. MrSolar matches you with up to three CEC-accredited installers serving Westmead — free and no obligation.
Westmead receives an average of 4.8 peak sun hours per day, making it an ideal location for solar. A 3kW system with around 85% efficiency (accounting for inverter losses, shading, and temperature) will produce approximately 12.2 kWh daily. Over a year, that adds up to 4,468 kWh. The table below breaks down the monthly output. These figures are estimates; actual production depends on panel orientation, shading, and weather. | Month | Daily kWh | Monthly kWh | |-------|-----------|-------------| | January | 14.1 | 437 | | February | 13.0 | 364 | | March | 11.8 | 366 | | April | 10.2 | 306 | | May | 8.6 | 267 | | June | 7.5 | 225 | | July | 8.0 | 248 | | August | 9.5 | 295 | | September | 11.2 | 336 | | October | 12.8 | 397 | | November | 14.0 | 420 | | December | 14.5 | 450 | These numbers are based on data from the Clean Energy Regulator and the Bureau of Meteorology.
A 3kW system is ideal for small households, apartments, or units with limited roof space. It's perfect for those with daytime electricity consumption, such as retirees working from home, or anyone looking to offset a portion of their bill. It typically suits a home with an average daily usage of 10–15 kWh. If you use more, you might consider a 5kW or 6.6kW system. A 3kW system will lower your electricity bills but won't cover heavy air conditioner use or a pool pump. It's a great entry point into solar, especially with the generous STC rebate.
Assuming a self-consumption rate of 40% (you use the solar power when it's generated) and the rest exported to the grid, here's the annual saving breakdown: - Self-consumed: 1,787 kWh × 33c/kWh = $590/year - Exported: 2,681 kWh × 6.5c/kWh feed-in tariff = $174/year - Total benefit: $764/year After the STC rebate (around $146), the net cost of a 3kW system is typically lower. With an average payback period of about 9.2 years, a 3kW system is a solid investment. Feed-in tariffs (FiTs) in NSW vary between 2–8c/kWh; shop around on Energy Made Easy for the best rate.
The Small-scale Technology Certificate (STC) rebate reduces the upfront cost of solar. Under the Renewable Energy Target, a 3kW system in Westmead (NSW, zone 3) is eligible for a set number of STCs. The current value is approximately $146, though it fluctuates with STC market prices. You can assign the STCs to your installer in exchange for a discount. From 1 July 2025, new structures may apply with the Cheaper Home Batteries Program, but STCs remain available for rooftop solar. Always choose a CEC-accredited installer to guarantee your entitlement to the rebate.
A 3kW system typically uses 8 modern 415W solar panels. Each panel is about 1.7m x 1m, requiring roughly 14 m² of roof space. This fits well on a small north-facing roof. Panels should be installed at an angle of 20–30° for optimal production. If your roof is shaded, consider microinverters or optimisers. Your CEC installer will assess your roof during the free quote.
Westmead is in the NSW grid, served by Ausgrid (DNSP). Most residential solar installations under 10kW don't need council approval in NSW under the State Environmental Planning Policy (Exempt and Complying Development Codes). However, heritage-listed properties or those in conservation areas must check with Parramatta City Council. Your installer will handle all approvals. The grid connection process is straightforward and typically takes 1–2 weeks after installation.
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For most Westmead households on 25–40c/kWh retail tariffs, a well-designed system pays back through self-consumed daytime energy first, then exports. A 6.6kW array around Westmead can generate roughly 33.0 kWh/day (12,045 kWh/year) at 5 peak sun hours — actual yield varies with roof pitch, shade, and inverter clipping. A typical 6.6kW system in STC Zone 3 currently points to about $1,435 in STCs (spot $39.85 as of 2026-08-05). Indicative 2026 metro pricing after STC for 6.6kW often lands near $5,000–$8,000; your roof and brand choice can move that band. If you have high daytime loads (WFH, pool, EV charging), solar is usually stronger than FiT-chasing alone. Get three CEC-accredited quotes for Westmead before deciding — bill savings depend on your tariff and usage shape, not averages.
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Written and reviewed by Daniel (Marketplace lead, Epic Unicorn Pty Ltd). We build pages from Australian solar datasets and regulatory references, then map you to CEC-accredited installers only.
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