Topic: Device costs including maintenanceSubscribe | Previous | Next
Gregers Larsen 6/30/2017
Hello LEAPers!
I have a short question about Device Cost, which I need to use for my Transport analysis, based on sales.
I'd like to define the device cost of different vehicle type, but also analyse the differences between O&M (excl. fuel) between types.
Can I do that? The closest thing I can think of is, with Device Cost is: Interp(year, Devicecost, year, Devicecost) + O&M
That doesn't seem like it should work, as it would just add O&M on the capital cost. Any other way? Guess I could use Total Cost, but it would be less clear in the result.
Thanks,
Gregers
Taylor Binnington 7/6/2017
1 Like Hi Gregers,
There are two issues with your proposal:
- As a rule of thumb, including Interp() statements as a term in a sum will give you numerical results which are often not intuitive. This is just because of the construction of the interpolation function. I would instead recommend that you include the O&M portion of the cost within the arguments of your Interp() function, so that the whole expression can be written as Interp(...).
- When you include Demand Costs for Transport Stock Turnover branches (by the way - please specify that you are using these branch types in your postings for other users, even though I've seen your model and know that you are using them) using the "Device Cost" method, the cost is only incurred for newly-sold vehicles, and in the year in which they are sold. That means that your O&M term would only be included for one year. For that reason, I would expect that the "Total Cost" method might be more flexible for you.
There is only one variable (the Demand Cost) on the demand side of the model which LEAP interprets as a cost. You may enter an expression with many terms representing different types of costs, but these will be displayed in aggregate in LEAP's results view when viewing Costs: Social Costs. If you wish, you could create an Indicator(s) which shows the various cost components which go into making the Demand Costs in your model.
Hope this helps,
Taylor