GEM, New Zealand's favourite power tool.
Track your usage and costs
Compare your usage to similar homes
Set a goal and develop a savings plan
See how temperature affects your bill
Unusual usage alerts
Predict your bill before it arrives
Get started with GEM
Already with Mercury?
Not a customer yet?
Not all GEM features are available to all customers or all types of electricity meters. GEM starts predicting your bill seven days into each billing cycle. Predictions based on historic usage. Your final bill may be lower or higher depending on your actual usage over the period.
PLEASE NOTE: To find out how to upgrade to a smart meter if you don't already have one, simply give us a ring on 0800 10 18 10.