C21e Frequently Asked Questions
Does it work in the UK?
Yes. The photovoltaic cells used in C21e do not need to be in direct sunlight to work, and will generate electricity even on cloudy days. The brighter the day the greater the energy generated.
Are the tiles fragile?
Not really. C21e contains toughened glass, mounted into a reinforced frame, which is no more fragile than regular concrete tiles.
Don't the tiles require lots of energy to manufacture?
The energy generated by one tile will 'pay back' the energy required to make it in roughly four years in the UK.
Is the C21e tile compatible with the tiles I want to use?
C21e has been designed to integrate with a range of tiles from leading roof tile manufacturers. (See table on previous page).
Does the system need batteries?
No local battery storage is required, as the C21e system connects to the local electricity supply and any excess power can be sold back to the electricity company.
Do solar tiles require planning permission?
The benefit of C21e's building integrated design is that no additional planning consent should be required for standard new-build developments.
Do the C21e tiles need maintenance?
C21e tiles are silent in operation and have no moving parts, so no maintenance is required. The design of the tiles means that any dust or dirt that accumulates on the tiles should be washed off during normal rainfall.
How long do the tiles last?
The tiles have a power warranty of 25 years and are expected to provide generation for fifty.
Are the tiles heavy to lift on to the roof?
No. At eight kilos per tile, they can be easily carried into place by one person.
How can I find out more?
Call our Roofing Support Team on 020 7803 0258, or email roofing@solarcentury.com
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