Or maybe they are concerned about being tarred with the same brush ..... I'd be rich if I had a pound for every plumber that told me 15 years ago that condensing boilers were rubbish and there was nothing wrong with 25 year old boilers - oh and that solar wouldn't take off because it doesn't work. Apathy rules, that's why we have a coalition government, maybe if more people cared the standards would be higher - the query is just about the method not the deisre to improve on standards.
The diffference between PV and condensing boilers is in the fact that you can physically obtain details on how much energy is saved by condensing boilers, unfortunately there is no such figures on how really efficient PV is because there are so many variables. At the moment we are working to averages taken over a set period of time, but no hard set figures.
The trouble with condensing boilers is with the installation of them. They require drainage, and as seen over the last 2 winters these have frozen up stopping the operation of the boiler.
With the increase size of the heat exchangers, and the use of first stainless and now aluminium, they can be 50% more expensive as conventional boilers, and becasue of the newness of aluminium there are not figures available on how long these will last in an operational enviroment.
It is accepted that with the energy saved by using condensing boilers recovery of the initial outlay should be achieved within 5-7 years.
Now PV the industry is working on returns where the most accuarate figures availalbe are guesstimates. There is no real ball park figure on how much yeild someone will get from an installation, as no one can forcast what the harvest conditions will be in May 2013, so we work to figures that have taken an average. As I pointed out here the last 2 winters in the UK have far exceeded the average in both snowfall, coldness and wetness, so how as a technology can you deliver an accurate return.
The only way to move forward with this was the FIT incentive and again I have no problem with this, only in the fact that the FIT tax is levied on to other energy users via higher prices. The government was certainly not going to foot the bill, and therefore the energy suppliers are passing on the tax to all the users, which IMO is wrong.
At this moment in time PV in the UK is not a viable energy resource unless it is heavily subsidised, and the subsidy is coming from people who can not afford to install 15-20k worth of installation. It is a levy on the less fortunate IMO and that is wrong.
The concept of PV a good idea, how are we going to achieve an efficient PV industry, that should still be something in a devlopment stage, is subsidising it the way forward, possibly, by a FIT that benefits a tiny proportion of society over the majority then no.