Hi
Version - 2015.06.30 (update 1)
System - MS Windows 7 SP1
Module - PhotoVoltaic (detailed), commercial
I have recently upgraded to Version 2015.06.30 of SAM and have found a change from version 2015.01.30. that I can not explain. If, for both "Flat energy rates" and "Time-of-use & tiered energy rates", the sell rate is set to zero, then the "Value electricity savings" in the cashflow are zero. (Note net metering is disabled.)
I have briefly tested with my models and the default models that are included with SAM and achieve the same result. From these tests it seems that the sell rate only is used to calculate total savings irrespective of whether the saving is from energy offset internally (self consumption normally at the buy rate) or from exported energy (normally at the sell rate) or a combination of both.
Have you changed from "PV behind the single meter" to a "two meter model", one for PV and for internal load? I can not seem to see a switch for this?
If you require any models, please let me know.
As an upgrade request I would really like to see more detailed workings for the the electricity savings in the cashflow model (excel) rather that the just final total $ figure. At a minimum import and export kWh and $'s saved would be useful and if possible broken down further by Tiered rates/times demand savings etc.
Thank you for creating and maintaining SAM
Regards
Mark