Enhancements to Version 2.0 of the Economic
The following enhancements have been made to version 2.0
of this program:
1. The program now
includes the option of calculating ballast costs, it assumes group replacement
of the ballasts at the end of the ballast life. This includes.
Ballast life based on ballast
type and ambient temperature
Ballast replacement time per
two sub-processes (replacement & install)
2. The program now can
optionally printout annual costs, by year, showing the actual costs in the years
they are realized (excluding ballast material costs if under the warranty period
... but that would only happen if the warranty is longer than the ballast life).
3. Adders have been
added to electrician labor rates based on:
Economy of Scale
City Cost Index
4. The program now
allows different escalation rates for 10 different annual costs.
5. Two additional plots
have been added:
Actual annual cost by year
Accumulated actual annual
costs by year in today's dollars
6. The program now
includes a calculation of total net present value in the printout.
7. The program now
allows the user to specify an income tax rate to account for income tax
reduction due to depreciation of initial costs uniformly over the life of the
NOTE: The new version will not read data files from previous versions
automatically. To open a file from v1.1, you must specifically use the menu
option “\File\Open v1.1 …”. Saving any file will automatically be done per v2.0.