They're giving these things away all over the world.
its a Solar Credit Scheme. So if you buy a solar or a wind system (it must be installed buy a qualified electrician) You get Renewable Energy Certifcates which can be sold for cash. (as per carbon trading scheme)
1.5kw =130 REC ( Renewable Energy Certificates)x $40 (market value) =$5200 cash
The number of RECs per KW installation
varies depending on where you live. The sunnier the climate, the more RECs.
If a boat is your principal place of residence and you have a fixed address, like a marina you are eligible.
If you lived on board it would be worth looking into.
Most people don't know about it, don't understand it and do nothing about it.
And that's just the way the goverment like it.