EnCalcLU calculates the actual and predicted cost of water used allowing both the real cost based on meter readings and forward prediction based on the readings and elapsed time to be calculated. The results can be saved to a log file for later analysis. The program can cope with both water and sewage volume charges, varying tax rates plus fixed charges enabling most charging models to be handled. EnCalcLU is part of the JSutils group of software utilities which have a theme of energy conservation. Currency And Date Formats These are defined by the settings in the computers Regional Settings which can be accessed via Control Panel. Dates follow the format of the Short Date setting. There is only limited space in the date fields so short dates containing the full month will not display properly. Currency symbols reflect the settings in the Currency Tab. Default Values And Get Last The cost of water and sewage, the prediction period, whether the program runs on top, the prediction period size and how save works can be saved as default values by clicking on the Save Defs button. The Reset Defs button is used to restore the saved default values. These details should be entered and saved before you first use the program. This information can be obtained from your last water bill or from the supplier. The Get Last button is used to retrieve the last date and meter reading. Each time data is save the last date and reading is saved and is available for retrieval. Actual Period, Prediction Period And Fixed Charge Calculation Water suppliers are not noted for the predictability of their billing dates and although the nominal period may be 6 months the dates do vary, also the billing period is unlikely to align with a real month start date. For these reasons the 6 month period calculation is a compromise which allows for an extra ten days. This is to stop fixed charges being incorrectly calculated. This does mean that if the actual period being costed is just over one year the fixed charges may still be incorrectly calculated. This possible error does not occur with predicted results. For the actual formulae used click here. The Actual and Prediction Period is in either in six month increments or monthly increments (If the Monthly box is ticked). Fixed charges are multiplied by either the Actual Period to the nearest next six month increment or the Predicted Period for predicted results. The Predicted Period is calculated from the earliest date entered. Logging The main log file can be used to capture the results of calculations Each entry is date and time stamped. Any internal program errors will also be written to the log file. A start up message is written to the log file each time the program is started which shows the program version. For real examples of using the program and more details about the log files look at Log Files. There is also a history log which which stores a running record of the last date and meter reading entered. NOTE: The program requires a registration code to run - this can be obtained free for personal non commercial use.