the national certificate in solar water heating has been available for a number of years - but is however been discontinued as of april this year due to lack of numbers/support
I understand it that certain relevant unit standards will be absorbed into the nz cert of plumbing
other "courses" are available as well - ie the master plumbers eco plumb module "soar hot water"
all information is available for those that look hard enough
Information and training is also available through certain "credible" solar manufacturers
There is a wealth of info on the net - forget about discussing it with the pgdb, its not their job - the ito is a joke - look to europe and the america's
America/Australia Greenplumbers is where the master plumbers EcoPlumb initiative came from, America/Australia have had this for 10+ yrs
Become a MP member and ask for course info - there is 5 core modules then you get to use Ecoplumb branding for marketing purposes - additional modules on various topics are available after that
one of the positives of the MP's and their upskilling courses in particular is that they are actually quite well put together and informative
I think the most important thing I have learnt over the last decade or so is that it PAYS not to rely on ANYBODY to further ones self - if you rely on others to provide info for you/to you then you will be forever waiting and ultimately disapointed - you have to have the motivation to get out there and do it for yourself - gather as much info as possible and make an informed decision for yourself....
technically no qualification is required for the installation of solar hot water systems - you do however require certifying status for connection to potable water and in order to gain eeca grant/rebates unit std 24305 is a pre-requisite for eeca registration
there are seminars/forums held in various parts of america and europe every year solely and purely dedicated to sustainable and renewable energy sources, including plumbing & hot water - what germany is doing with this is quite frankly amazing - I am hoping to attend one mid yr
Hope this info helps - any further q's or info just ask...