Industrial Grade DC Energy Meter measures the four channels of common voltage, current, watts, energy independently and has an optional ah and load hrs which enables good load study. The Meter has an option of reverse lock, in which charging energy can be accumulated by blocking discharging energy and finds application in battery chargers, solar energy measurement, DC generator, DC load such as inverters, telecom equipments etc. The Meter has the feature that the digital output can be utilized by the user to shut down loads/ trigger alarms when ever voltage reaches below certain level or to switch off/ on charging circuit automatically. The Meter has differential current input for all the current channels and voltage full scale programmable. The Meter has reverse lock option for not accumulating the reverse current energy and programmable shunt secondary of 50 mV to 75 mV. The Meter has auto-scaling of kilo and mega decimal point and is energy display programmable counter based or resolution based. The Industrial Grade DC Energy Meter has energy resetting at 999999 k multiplication factor.