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Our Data Methodology

How we collect, verify, and analyse solar battery data for Western Australian buyers

Data collection & sources

Where our information comes from and how we validate it

Primary data sources

Clean Energy Council (CEC) Approved Products List - Official registry of all products eligible for government rebates and incentives in Australia
Manufacturer Data Sheets - Technical specifications and warranty information directly from manufacturers
Historical CEC Records - Tracking approval dates, expiry dates, and product lifecycle data from 2009 onwards
Market Research & Industry Reports - Australian solar industry analysis from reputable sources
Consumer Reports & Feedback - Real-world performance data and warranty claim patterns

Note: All CEC data is publicly available and verified through the official CEC website. We do not make claims about products that are not substantiated by official records or manufacturer documentation.

Analysis methodology

How we turn collected data into conclusions

Market pattern recognition

We analyse historical patterns from the 2009-2012 solar panel rebate era to identify similar trends in the current battery market. This comparison is based on:

Rate of new manufacturer approvals before, during, and after rebate periods
Product lifecycle duration (approval to expiry dates)
Manufacturer longevity and market exit patterns
Price trends relative to market maturity
Product range depth indicating business commitment

Manufacturer risk assessment

We evaluate manufacturers based on objective, verifiable criteria:

Market Tenure: Years active in Australian market (CEC approval history)
Local Support: Verified Australian offices, phone support, and warranty centres
Product Commitment: Number of approved models and product range diversity
Pricing Stability: Price positioning relative to market averages over time
Approval Continuity: Gap patterns between product approvals and renewals

Market assessment & safety methodology

How we assess manufacturer market presence and safety records

Manufacturer market signals

For each brand we surface a few factual signals, drawn from the CEC register and public records, to help you judge how established it is in Australia. These are presented as neutral signals — not a ranking, and not a verdict on any brand:

Market tenure

Years since the brand's earliest CEC-listed product in Australia — batteries, inverters or panels

Product range

How many CEC-listed batteries and inverters the brand currently lists

Australian presence

Whether the brand has a verified local office and warranty support (shown as verified or not yet verified)

Recent activity

Whether the brand has had products approved in the past two years

Product safety information

We list current product recalls factually, exactly as published on the ACCC product recall register, for every brand on the same basis. We don't score, rank or penalise manufacturers on their safety record, and we don't offer any opinion on recalls, undertakings or legal proceedings — we simply show the public record and link to the source so you can read it yourself. A recall is one data point among many; always confirm the current status with the manufacturer and your installer.

Sources

• ACCC Product Safety Australia recall register (productsafety.gov.au/recalls)
• Clean Energy Council product recall notices

Price analysis

Average prices are compiled from CEC data, installer quotes, and market surveys. We track:

System pricing trends (5-10kWh residential installations)
Price positioning of established vs new entrants
Quality brand pricing stability over time
Correlation between price drops and market influx periods

Limitations & important disclaimers

What our data can and cannot tell you

Data limitations

CEC approval ≠ product quality guarantee. CEC approval means a product meets minimum technical standards for rebate eligibility, not that it’s the best choice for your needs.
Historical patterns indicate risk, not certainty. While history suggests patterns, individual manufacturers may defy trends. Our analysis identifies risk factors; it does not guarantee outcomes.
Estimated pricing may vary. Prices shown are averages and may differ based on location, installer, installation complexity, and current promotions.
Market data has lag time. CEC data reflects approval dates, not necessarily when products become available or popular in the market.

Not financial or installation advice

This website provides information and data analysis only. We do not provide financial advice, installation recommendations, or product endorsements. Always:

Get multiple quotes from accredited installers
Verify manufacturer credentials independently
Consult with licensed electricians for system sizing
Review all warranty terms before purchasing
Confirm current rebate eligibility with relevant authorities

Data currency & updates

How often we update our information

Update frequency

CEC Product Data: Synchronised weekly with official CEC approved product lists
Market Analysis: Updated monthly based on new approvals and market trends
Pricing Data: Reviewed quarterly based on installer surveys and market reports
Manufacturer Profiles: Continuously updated as new information becomes available

Last Major Update: March 2026
CEC Data Version: March 2026
Next Scheduled Review: April 2026

Our commitment to transparency

We believe in objective, data-driven analysis. Our goal is to help Western Australian consumers make informed decisions about solar battery systems by providing:

Transparent data sources you can verify independently
Clear methodology explaining how we reach our conclusions
Honest acknowledgment of data limitations and uncertainties
No product endorsements or paid manufacturer placements
Historical context to understand current market conditions

If you find errors in our data or have questions about our methodology, please email us. We're committed to accuracy and continuous improvement.

See our data in action

This methodology drives our battery comparisons, savings calculations, and personalised recommendations for Perth homes.

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