EMA (Electricity Meter Analyzer) is a program that helps you determine the accuracy of power bills received from your electricity retailer, it does this by analysing each half hour interval by time of day and the power type (peak, off peak, shoulder and controlled load) then applying the rate for each of the types to come up with what it believes is a total cost for the power used.

Before EMA can do this, you need to obtain the NEM12data to import from your retailer which they must provide by law when asked by you. It is essential that it is made clear to them that the file they provide is the same as that received by the retailer via their electricity distributor or network provider and you must set options that EMA uses to customize data entry requirements based on your tariff power types.

EMA will only convert data to it's standard format using the NEM12 data file, the format of this file is governed by a national standard which ALL electricity distributors must adhere to. If the file you receive is not to this standard, import will fail and you will not be able to produce a bill comparison.

Note: EMA's standard format is a CSV file created by analysing the NEM12 data file, during the conversion phase, EMA identifies the power types by the time of day which you provide on the NEM12 to EMA Conversion window, once created do not modify it in any way.

As well as the cost for the power used, EMA will also calculate the meter charge, any off peak concession, government rebates and other discounts or charges for the read cycle.

Even if the total kWh's for each of the power types in the analysis are the same as those shown on the retailers bill, there still maybe be some slight differences in the totals EMA calculates for the power types, this is due to the fact that retailers quote total consumption in whole numbers on their bills, EMA calculates these totals from actual interval readings from the meter resulting in decimal fractions of the totals being shown, for more precision in the totals, set the number of decimal places to show (min 2 max 6) through the Options menu.

Note: In all test cases, the totals for actual meter data analyzed against the bill totals has never been the same, this is not of concern if the difference is less than 1 kWh which can be result of rounding, above this you need to look at where the problem may be.

The license of this software is Freeware, you can free download and free use this application software.