The data layer behind every solar decision.
Solar Analytica is an independent reference for solar inverter fault codes, engineering tools and the technology behind the panels — manufacturer-neutral, evidence-first, and free to use.
- Field guides
- 26
- Documented fault codes
- 550+
- Brands covered
- 15
- Interactive tools
- 10
Three ways into the data.
Everything on Solar Analytica is built to answer a real question quickly — whether you're staring at an error code or pricing a new system.
Reference
Field Guides
Inverter fault libraries for every major brand, plus plain-English explainers on the technology behind the panels.
Browse the libraryCalculate
Tools
Size a system, model payback, check power density or settle the single-vs-three-phase question — all in the browser, no sign-up.
Open the toolsTrust
Methodology
How we research, score and verify everything we publish — manufacturer-neutral, evidence-first, openly documented.
See how we workFault libraries & technology, decoded.
550+ documented inverter fault codes across 15 brands, plus deep-dive explainers — all written in plain English and kept current.
Inverter Fault Library
Huawei Inverter Error Codes
Major and minor alarm codes for Huawei SUN2000 residential and commercial inverters, with plain-English causes and field-tested fixes.
Inverter Fault Library
Sungrow Alarm Codes
The complete Sungrow fault reference — string, SH hybrid and battery families — with every alarm number searchable and grouped by root cause.
Inverter Fault Library
Solis Alarm Codes
Solis (Ginlong) inverter alarm codes covering grid, insulation, temperature and hardware faults, with diagnostic next steps.
Inverter Fault Library
Growatt Error Codes
Growatt's dual numbered-and-named error scheme decoded — what each Error and Warning means, and whether it needs an installer.
Cell Technology
HJT Solar Technology, Explained
How heterojunction cells fuse crystalline and thin-film silicon to push efficiency higher — and what that means for real-world yield.
Cell Architecture
Solar Cell Busbars & Multi-Busbar Design
Why busbar count keeps rising — from 5BB to MBB and beyond — and how finer conductors cut resistive loss and improve reliability.
Run the numbers yourself.
Fast, transparent calculators — every formula is shown, nothing is stored, and no email is required.
Sizing Tool
Solar System Size Calculator
Turn your daily energy use, sun hours and system losses into a recommended array size, panel count and inverter rating.
Financial Tool
Solar Payback Calculator
Estimate annual savings and payback period from system cost, generation, self-consumption, electricity rate and feed-in tariff.
Engineering Tool
Solar Panel Power Density Calculator
From rated power and module dimensions, compute power density in W/m², module efficiency and panels needed per kilowatt.
Decision Tool
Single or Three-Phase Power?
Answer a few questions about your supply and system size to see whether single or three-phase is the right fit — and why it matters for solar.
Sizing Tool
Solar Battery Size Calculator
Size a home battery from your overnight energy use, days of autonomy, depth of discharge and round-trip efficiency.
Rebate Tool
Solar STC Rebate Calculator (Australia)
Estimate the federal STC incentive on an Australian solar install from system size, your zone rating, deeming years and the STC price.
Engineering Tool
Solar Cable Voltage Drop Calculator
Work out voltage drop on a DC string or single-phase AC run from length, current, conductor size and material — checked against AS/NZS guidance.
Design Tool
Tilt & Orientation Yield Estimator
Get an indicative annual-yield figure for a roof from its direction and pitch, relative to an optimally-oriented array.
Engineering Tool
Solar String Sizing Calculator
Work out how many panels can go in series on a string — within the inverter's MPPT window and under the maximum system voltage — using temperature-corrected module voltages.
Design Tool
DC:AC Ratio (Inverter Load Ratio) Calculator
Check the ratio of array DC capacity to inverter AC rating — the inverter load ratio — and see whether it sits in the typical range or risks clipping.
Built for everyone touching the system.
Homeowners
Decode the warning light on your inverter, sanity-check a quote, and understand what you're actually buying.
Installers & electricians
A fast, searchable fault reference and sizing tools you can trust on site — no logins, no fluff.
Industry & media
Independent, citable data on inverter behaviour and solar technology, free of manufacturer spin.
The essentials
- What is Solar Analytica?
- An independent reference for solar inverter fault codes, engineering tools and the technology behind the panels. It is manufacturer-neutral, evidence-first, and free to use.
- Is Solar Analytica affiliated with any brand?
- No. The site is independent and not affiliated with any manufacturer, so the guides and tools are written to inform rather than to sell a product.
- Does anything cost money or require an account?
- No. Everything is free with no sign-up. The calculators run entirely in your browser, store nothing, and give estimates only — not a quote. Content was last reviewed in June 2026.
Transparency through data.
Solar Analytica is the intelligence library. For head-to-head product scorecards on panels, batteries and inverters, visit our sister database.