Asking your solar installer a few essential questions may make a big difference to the service and benefits you receive.
Make sure you get the answers in writing - an don't hesistate to get these answers checked by Dale McDonald, who leads the Camberwell Electrics Solar Power Team,
Over time solar panels will show degradation and produce each year a little less electricity.
In order to give purchasers some guidance about the level of degradation, an Output Warranty is offered by most manufacturers.
This Output Warranty goes in most cases for 25 years and guarantees that for conventional panels an output of around 80% of initial production efficiency is still maintained by the panel (LG offers 83.4%).
Unfortunately this 'Warranty" can easily cause confusion.
Please note an Output Warranty IS NOT a Manufacturers Warranty on the actual panel.
For example if in year 13 your panel fails completely, then the Output Warranty may not cover the faulty panel.
A panel has to be in working order to claim an Output Warranty.
In many sales promotions the 25 YEAR Warranty is highlighted but when you read the details of an Output Warranty, you will have to pay for getting panels off the roof, shipped for testing and then also pay for the return and reinstall.
Often the compensation for a poor performing panel is less than $100, when the customer had to spend many hundreds of dollars on install/uninstall and on the process to show the output of the panel is poor. Therefore this warranty only has a low value. Be aware of glossy 25 Year Warranty stickers - it is the 10 or 12 year (LG is 12 years) Manufacturer's Warranty not the Output Warranty that counts.
Please don't hestate to call Richard on either (03) 9835 4343 or 0457-860-113 to discuss any questions about how to get the best solar power installation.