Convert IS-U measure M3 to KWH in BW

Dear guys,
there is a requirement to aggregate all divisions using only one measure unit. This should be the target measure unit "kWh".
As there a mixed values of cubicmeter (M3) for Gas and Water, and Kilowatt per hour (kWh) for Energy I am looking for a way to buid a formula to convert Gas & Water to kWh.
The report will be created for a KeyAccount Manager and he just wants to see only one unit. Otherwise there will be a wildcard in the result set of the query due to mixed units.
I tried a unit conversion in BW but M3 and KWH are stored in different dimension so conversion will not take place.
As there is a german keyword "Thermische Abrechnung" (thermic calculation ?) for Gas and a very complex formula for that I need an additional second formula to convert M3 of Water to kWh.
Has anyone done that before ?
As we use IS-U 4.72 and BI7.0 I didn´t find yet a solution for that issue.
Could anyone help ?
Regards,
Peter

You can not convert volume to energy. These two are two different things. cubicmeter measures the volume like the volume of water in a tub. kWh measures the energy consumed by electric bulb, refregirator etc. These are like apples and oranges. So You can not convert volume to energy or vice versa.

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Now i am explaining system setting. based on this kindly help me.
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I Have KWH(Kilowatt Hour), TO(Tonnes) and M3(Cubic Meter),How to Convert these values into single unit of measure?
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Hi,
Check following thread as well
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/00944f2f-c3e8-2c10-ccb5-a6e4cc882db4?QuickLink=index&overridelayout=true
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