OpenSolar Alternative for Australian Installers

Looking for an
OpenSolar alternative?

OpenSolar is a strong, free platform, but if you need built-in Australian compliance, AS/NZS 5033 single-line diagrams, automatic STCs and the Federal Battery Rebate, Solar Proof is the alternative built for exactly that. Here's an honest look at how they differ and when each one wins.

Which should you choose?

Stick with OpenSolar if

You want a genuinely free platform for straightforward residential jobs and you're comfortable with its partner-funded model. It's hard to beat on cost.

Choose Solar Proof if

Australian compliance is central: built-in AS/NZS 5033 SLDs, automatic STCs and the Federal Battery Rebate, plus flexible, branded proposals.

Where OpenSolar leaves a gap for Australia

Compliant SLDs

OpenSolar doesn't generate AS/NZS 5033 single-line diagrams natively; many installers still need separate CAD software. Solar Proof includes a browser-based SLD editor.

STCs & battery rebate

Solar Proof calculates STCs automatically and applies the Federal Battery Rebate inside quotes, the kind of AU-specific accuracy a global tool doesn't centre on.

The partner-funded model

Because OpenSolar is funded by hardware and finance partners, project data flows to them by design, and API access became a paid feature from April 2026.

Solar Proof vs OpenSolar at a glance

	Solar Proof	OpenSolar
Pricing	From ~$4/project; Pro ~$99/mo	Free (partner-funded)
Australian focus	Built for AU	Global
SLD editor	Browser-based, AS/NZS 5033	Not native; often needs CAD
STCs & battery rebate	Built in	Limited
User base	Growing, Australian	Very large, global

Where OpenSolar is still the better pick

We'd rather be honest than oversell. OpenSolar is genuinely excellent for a lot of installers, and if you're one of them, stay with it:

It's free, with no per-seat fees or design caps, unbeatable on cost.

It has a huge, proven global community and deep hardware integrations.

For simple residential jobs without complex compliance needs, it does the job well.

OpenSolar alternative questions

What is the best OpenSolar alternative for Australian installers?

For installers needing built-in compliance, Solar Proof is a strong alternative, adding a browser-based AS/NZS 5033 SLD editor, automatic STCs and the Federal Battery Rebate. OpenSolar remains the best free option for simple residential work.

Why would I switch from OpenSolar?

Usually for compliant SLDs without separate CAD, accurate STC and battery-rebate handling, or AU-specific compliance. If you don't need those, OpenSolar's free platform may be all you require.

Is Solar Proof free like OpenSolar?

No. Solar Proof is pay-as-you-go from around $4/project, with Pro from about $99/month. For compliance-heavy or battery-focused installers, the time saved can justify the cost.