Some links:
Powerline World is a global online community facilitating the development and deployment of Powerline Communications (PLC) products and services.
http://www.powerlineworld.com/
HomePlug is an industry Alliance comprised of industry leaders at each level of the value chain - from Technology to Services & Content.
http://www.homeplug.org
2nd Annual Power Line Communications in Africa 2005
July 20 - 21, 2005 · CSIR International Convention Centre, Pretoria, Gauteng, South Africa
http://www.iqpc.co.uk/cgi-bin/templates/genevent.html?topic=233&event=7227&
2004: ITU /ICTP Workshop on New Radiocommunication Technologies for ICT in Developing Countries—Africa Region Trieste, Italy, 17—21 May 2004 --- "New Technologies and Solutions for Wireless Digital Communications - Part 1" lecture notes (pdf, 1.4MB) Lecturer: R. Struzak, ITU, Geneva http://wireless.ictp.it/ITU_workshop/index.html
2005: School on Radio Based Computer Networking for Research and Training in Developing Countries. "Basics of broadband communications over power lines and EMC issues" (pdf, 1.7 MB) A. Zeddam http://wireless.ictp.it/school_2005/index.html;