Recently I was invited to the Engineers Without Borders UK Sheffield group to present a workshop on electrical systems for renewable energy projects.
Around 12 people attended, even with a deluge of snow shutting down a lot of the travel options. This was a 4-hour workshop which focused on practical electrical systems for off-grid renewable energy systems. We looked into basic electrical terms, using a multimeter, testing batteries, photovoltaics and pedal generators.
This presentation was recorded by Robin Lovelace who has uploaded it onto his youtube site: http://www.youtube.com/user/RobinLovelace.