How do you rewind your electricity meter?

This isn't recommended.

Meters can be manipulated to make them under-register, effectively allowing power use without paying for it. This theft or fraud can be dangerous as well as dishonest.

Power companies often install remote-reporting meters specifically to enable remote detection of tampering, and specifically to discover energy theft.

When tampering is detected, the normal tactic, is to switch the subscriber to a "tampering" tariff charged at the meter's maximum designed current. At $ 0.095/kWh, a standard residential 50 A meter causes a legally collectible charge of about $ 5,000.00 per month. Meter readers are trained to spot signs of tampering, and with crude mechanical meters, the maximum rate may be charged each billing period until the tamper is removed, or the service is disconnected.