Broken <span class="highlight">Solar</span> <span class="highlight">panel</span> glass repairs

Hayley, it's probably toughened glass (broke into tiny pieces ?) and might be thinner than you can normally get toughened in Australia. Many of these things are 3mm toughened made in China, 4mm may fit.

4mm clear is thinnest made in Aus, but you shoud first check if the panel itself, the solar modlues are damaged with the breakage.
I've seen them kind of stick / stuck to the glass, and if this is the case the panel might be non repairable.
Have you hooked it up and tested it still produces a normal-ish amount of power ?
It may produce less due to the broken glass, if still in front.

From my time in commercial glass, Pilkington Australia had toughening plants around Aus, but nowadays many smaller ones are around too.
Suggest getting onto Google and / or Yellow Pages and just email / make some calls to some of the larger glass companies.
Measure in mm's length and width to enable a price to be given, and ensure 4mm glass will go into the fittings / flanges ok.

You may be able to replace it with polycarbonate.

The cost of a new panel could be less than the cost of a glass to fix the damaged one.

For efficient operation, the polymer than embeds the silicon cells should be effectively glued to the glass. I have never tried it, but I suspect if you tried to remove the glass you would destroy the panel.
When panels are made, the glass forms the base on which everything is built up. The glass itself provides the mechanical rigidity to the whole system. Without it there is just some flimsy plastic with very brittle, very thin, silicon cells.

If it is still working you might just keep using it, otherwise I think you need to replace the entire panel.