a major supplier whose offer had no upfront costs in New Zealand...

a major supplier whose offer had no upfront costs in New Zealand has gone out of business.
I have yet to do research into solar panels.
We bought a house that required a substantial amount of work and after about 10 months have now completed this work. We wanted to complete this work before investigating solar.
Water is heated via street provided gas and the hob uses gas. They seem to be efficient.
I have yet to work out where to start with research in New Zealand; I thought that the company that has gone out of business was a good starting point.
Alas, it would have been a bad starting point.
I suppose the lesson is to ensure that suppliers have insurance cover for going out of business,