|
The 'Surveyor came today, i addressed this 4kw issue the panels used come from Germany and have a 25 year manufacturers warranty.
Aparetly the output fugures given are for the worse case scenario using the older Sun power units, the scale used is still for the older type panels. the newer tech mono's will generate as long as there is daylight, so in hot summer this could be 9 hours not just 4.5 hours.
These panels are so efficient they no longer need to be directly facing the sun, but can be either side of the roof apex with the xception of North facing.
He stated the single inverters only have a 10 year warranty, while the micro inverters have 20 years. how true or not he said many of the cheaper panels come from China who has banned them (no idea why), so they might work for a long time but if not what then and what real warranty?
On warranty, it is insurranced backed, also if you use Barclays for the loan they also back the warranty.
The glass is self cleaning, mindful of the threat of a harsh winter he claims snow has no effect as enough daylight still gets through with these high efficiency units and micro inverters. With separate micro inverters the output is increased by 20%, thats to say in low light at dusk as xample it will be better with than without them.
@ 9k I guess if i shopped around i could get some shaved off, while i don't think it's cheap given the figure if £7k is not extrotionate for quality as this seems the latest technology kit and everything seems to have knitted well into place, add in the system can be in and running by Friday i feel happy to go ahead.
thanks all that answered, hope we all learned something useful.
Alan |
|