Green Energy Thermometer The first major project for C4 Healesville is the 3777 Clean Energy Challenge — a community project that tracks how many households and businesses within the 3777 zone sign on to clean green electricity. The thermometers will be visible markers showing our progress towards the goal of 20% clean energy uptake.  To choose which option is best for you visit www.greenelectricitywatch.org.au Convert Today ! Stay tuned as we track 3777's progress.... (current estimate is 3.5% - so we got some green to fill in already !)