PV roof tiles

This seems like a cool concept, but I wonder about the wiring complexity and the trouble shooting/repair for individual elements. It does bring up the idea of ways to integrate power generation in a less imposing way (piezoelectric floor tiles, for example).

http://www.solarfeeds.com/tegolasolare-embeds-solar-panels-in-roof-tiles/

I've been watching this tech for a while.

Expensive, but PV worth anything is. Certainteed has had a system for a while:

http://news.consumerreports.org/home/2012/02/builders-show-certainteed-solar-roofing.html

These aren't as efficient as traditional panels, but not terrible either.

Dow has them too: http://www.dowpowerhouse.com/

Claim to reduce a "typical" home's electricity bill by 50% for a "typical installation"

Certainteed relies on a central inverter, I think

You lose area around each one