1/3 - 1/2 cost/Watt of commercial installation.
This video is complemented by the open source online written guide found here: http://www.demandenergyequality.org/build-your-own-panels.html
Demand Energy Equality is a Bristol based community energy project that seeks to empower & power low-income households. Find out more here: http://www.demandenergyequality.org/what-we-do--why.html
To get in touch with questions or comments on the video guide, or anything else, please email firstname.lastname@example.org.