Appendices - GSA

Table B-19: ROI of RE Solutions by GSA Region
(without incentives)
GSA Region
1 2 5 7 8 9 10 Grand Total
RE
Solutions
Case Lifecycle
Cost $13,989,463 $23,524,359 $8,871,273 $57,994,499 $10,212,440 $47,714,623 $17,025,517 $179,332,174
Base Case
Life-Cycle
Cost $14,941,605 $25,004,919 $9,039,609 $63,225,183 $10,683,561 $52,247,654 $17,869,336 $193,011,868
Average
Return on
investment
(%) 10.4% 10.4% 8.2% 13.9% 10.0% 15.0% 11.6% 11.8%
Table B-20 offers a snapshot of the number of technologies included in the
optimized RE solutions by region and by technology. It is important to
understand that for each LPOE site, a technology is only counted here if it is part
of the optimized combination of RE solutions for that site.
In other words, it is possible for an LPOE site to have the potential to generate
biomass energy cost effectively. However, if it is more cost-effective to generate
wind energy and use solar water heating at that LPOE site, then biomass energy
will not be counted as an optimized technology for that site.
Further more, the number of technologies counted in this table does not reflect
the total amount of energy that each region has the potential to generate.
Table B-20: Number of Technologies Included in Optimized RE Solutions
(without incentives)
Number of Sites by GSA Region
RE Technology 1 2 5 7 8 9 10 Grand Total
Daylighting 3 4 0 8 1 3 0 19
Wind Energy 28 12 5 4 10 2 11 72
Biomass Energy 22 9 2 26 3 12 8 82
Solar Ventilation Air Preheat 23 9 1 10 4 10 8 65
Solar Water Heating 3 1 0 1 1 2 0 8
Solar Electric Photovoltaics 0 0 0 0 0 0 0 0
Solar Industrial Process Heat 0 0 0 0 0 0 0 0
155