Every month store the current counter reading of a Modbus energy meter to a Google speadsheet

Energy is valuable. It is becoming increasingly important to know how much you have used. Timberwolf Server can manage hundreds of energy meters via Modbus. This applet starts at midnight every month and reads the current value from the Timberwolf Server. You assign the respective meter to be used on the server. The applet saves the counter reading in the Google Spreadsheet "Power usage".