ATT (18) LCCA P1476U Fire Station Addition.pdf
PDF 615 KB Posted
- Attached to
- DESIGN-BUILD (DB), P-1476U NEW FIRE APPARATUS BAY CHEATHAM ANNEX, NAVAL WEAPONS STATION YORKTOWN, VIRGINIA
- Solicitation number
- N40085-26-R-0131
About this file
This is a Building Life Cycle Costing (BLCC) analysis report for the P1476U Fire Station Addition military construction (MILCON) project prepared by analyst Dalin Heng. The analysis evaluates four HVAC system alternatives over a 40-year study period with a 3-year construction timeline, using 2024 EIA data and a 2.5% real discount rate in constant dollars.
The baseline alternative is a package rooftop AC system with constant volume, direct expansion, and fossil fuel furnace, which generates a life cycle cost (LCC) of $1,377,005 with annual energy consumption of 106,068.67 gJ and associated GHG emissions of 6,293,252.3 kg CO2e. Three non-baseline alternatives are evaluated: (1) Split System Heat Pump with air-cooled DX at $544,774 LCC and 27,799.11 gJ annual energy consumption; (2) Ground Source Heat Pump at $640,554 LCC with the lowest energy consumption at 6,452.34 gJ and GHG emissions of 1,792,317 kg CO2e, yielding a savings-to-investment ratio (SIR) of 2.81 and adjusted internal rate of return (AIRR) of 4.89%; and (3) VAV Package Rooftop at $706,716 LCC consuming 15,599.72 gJ annually with an SIR of 3.17 and AIRR of 5.14%. The Split System Heat Pump alternative offers the lowest overall cost with net savings of $832,231 relative to the baseline, while the Ground Source Heat Pump provides the most significant energy and emissions reductions. All alternatives demonstrate positive financial returns and energy performance improvements compared to the baseline fossil fuel system. The analysis includes detailed annual cash flow projections, cost breakdowns by category, and resource consumption data supporting comparative evaluation of these HVAC solutions for the fire station addition project.
View the file
Other files
Show all 15
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
Report Generated: 5/15/2026 7:27:48 AM
General Information
Project Name: P1476U Fire Station Addition
Analyst: Dalin Heng
Analysis Type: MILCON Analysis, Non-Energy Project
Project Description:
Split System heat Pump with air cool Dx (proposed) Package rooftop AC with constant volume, direct expansion, fossil fuel furnace (Baseline) Variable refrigerant flow with heat recovery (Alt1) Ground Source Heat Pump (Alt2) Study Period: 40 year(s) Construction Period: 3 year(s)
Data Release Year: 2024 EIA Projection Scenario: REF
Discounting:
Dollar Value: Constant Discounting Convention: Mid Year
Real Discount Rate: 2.50%
Location:
Country: United States of America State: U.S. Average
City: Yorktown Zip:
Greenhouse Gas (GHG) Emissions Assumptions:
Data Source: NIST NETL Emissions Rate Type: Average
1 / 33
Alternatives Total - 4
Alternative 1 - Split System Heat Pump
Description: Split System Heat Pump with Air Cool DX (Proposed)
Baseline: No
Total Costs: 4
Cost - Energy: Electricity Cost
Cost or Savings: Cost
Fuel Type: Electricity
Customer Sector: Commercial
Annual Consumption: 208,702 kWh
Cost per Unit: $0.1068
Location: Same as Project Location
Usage Index: 100.00%
Cost - Capital Investment Cost: Split System Heat Pump, Infrared, Electric
Cost or Savings: Cost
Initial Cost: $37,894
Expected Lifetime: 18 year(s)
Value Rate Of Change: 0.00%
Cost Adjustment Factor: 0%
Residual Value: No
Cost - Capital Replacement Cost: Electric Unit Heater Replacement Cost
Cost or Savings: Cost
Initial Cost: $1,464
Initial Occurrence: 26 year(s)
Expected Lifetime: 13 year(s)
Value Rate Of Change: NaN%
Residual Value: No
Cost - Capital Replacement Cost: Infrared Replacement Cost
Cost or Savings: Cost
Initial Cost: $10,686
Initial Occurrence: 36 year(s) 2 / 33
Expected Lifetime: 18 year(s)
Value Rate Of Change: NaN%
Residual Value: No
Alternative 2 - Package Rooftop
Description: Package rooftop AC with constant volume, direct expansion, fossil fuel furnace (Baseline)
Baseline: Yes
Total Costs: 7
Cost - Energy: Natrual Gas
Cost or Savings: Cost
Fuel Type: Natural Gas
Customer Sector: Commercial
Annual Consumption: 22,126.9 Therm
Cost per Unit: $0.961
Location: Same as Project Location
Usage Index: 100.00%
Cost - Energy: Baseline Electricity Cost
Cost or Savings: Cost
Fuel Type: Electricity
Customer Sector: Commercial
Annual Consumption: 125,828 kWh
Cost per Unit: $0.1068
Location: Same as Project Location
Usage Index: 100.00%
Cost - Capital Investment Cost: Baseline Package Rooftop
Cost or Savings: Cost
Initial Cost: $63,961
Expected Lifetime: 14 year(s)
Value Rate Of Change: 0.00%
Cost Adjustment Factor: 0%
Residual Value: No
Cost - Energy: Baseline Package Rooftop
Cost or Savings: Cost
Fuel Type: Natural Gas 3 / 33
Customer Sector: Commercial
Annual Consumption: 22,133 kWh
Cost per Unit: $0.961
Location: Same as Project Location
Usage Index: 100.00%
Cost - Capital Replacement Cost: Package DX rooftop replacement cost
Cost or Savings: Cost
Initial Cost: $51,811
Initial Occurrence: 1 year(s)
Expected Lifetime: 14 year(s)
Value Rate Of Change: NaN%
Residual Value: No
Cost - Capital Replacement Cost: Electric Unit Heater Replacement Cost
Cost or Savings: Cost
Initial Cost: $1,464
Initial Occurrence: 26 year(s)
Expected Lifetime: 13 year(s)
Value Rate Of Change: NaN%
Residual Value: No
Cost - Capital Replacement Cost: Infrared Replacement Cost
Cost or Savings: Cost
Initial Cost: $10,686
Initial Occurrence: 36 year(s)
Expected Lifetime: 18 year(s)
Value Rate Of Change: NaN%
Residual Value: No
Alternative 3 - Ground Source Heat Pump
Description: Ground Source Heat Pump (Alt2)
Baseline: No
Total Costs: 3
Cost - Capital Investment Cost: Initial Investment Cost
Cost or Savings: Cost
Initial Cost: $344,807 4 / 33
Expected Lifetime: 12 year(s)
Value Rate Of Change: 0.00%
Cost Adjustment Factor: 0%
Residual Value: No
Cost - Energy: GSHP Electricity Cost
Cost or Savings: Cost
Fuel Type: Electricity
Customer Sector: Commercial
Annual Consumption: 48,441 kWh
Cost per Unit: $0.1068
Location: Same as Project Location
Usage Index: 100.00%
Cost - Capital Replacement Cost: Equipment Replacement Cost
Cost or Savings: Cost
Initial Cost: $344,807
Initial Occurrence: 24 year(s)
Expected Lifetime: 12 year(s)
Value Rate Of Change: NaN%
Residual Value: No
Alternative 4 - VAV Package Rooftop
Description: VAV terminal, AHU, Infrared, electric unit heater
Baseline: No
Total Costs: 6
Cost - Energy: Electricity Cost
Cost or Savings: Cost
Fuel Type: Electricity
Customer Sector: Commercial
Annual Consumption: 117,115 kWh
Cost per Unit: $0.1068
Location: Same as Project Location
Usage Index: 100.00%
Cost - Capital Investment Cost: VAV Terminal, AHU, Infrared, electric unit
Cost or Savings: Cost 5 / 33
Initial Cost: $211,206
Expected Lifetime: 18 year(s)
Value Rate Of Change: 0.00%
Cost Adjustment Factor: 0%
Residual Value: No
Cost - Capital Replacement Cost: Replacement
Cost or Savings: Cost
Initial Cost: $211,206
Initial Occurrence: 18 year(s)
Expected Lifetime: 18 year(s)
Value Rate Of Change: NaN%
Residual Value: No
Cost - Capital Replacement Cost: Electric Unit Heater Replacement Cost
Cost or Savings: Cost
Initial Cost: $1,464
Initial Occurrence: 26 year(s)
Expected Lifetime: 13 year(s)
Value Rate Of Change: NaN%
Residual Value: No
Cost - Capital Replacement Cost: Infrared Replacement Cost
Cost or Savings: Cost
Initial Cost: $10,686
Initial Occurrence: 36 year(s)
Expected Lifetime: 18 year(s)
Value Rate Of Change: NaN%
Residual Value: No
Cost - Capital Replacement Cost: Replacement Copy
Cost or Savings: Cost
Initial Cost: $211,206
Initial Occurrence: 36 year(s)
Expected Lifetime: 18 year(s)
Value Rate Of Change: NaN%
Residual Value: No 6 / 33
7 / 33
Results
Summary
Life Cycle Results Comparison
Alternative Base Case Investment Life Cycle Cost Energy GHG Emissions (kg CO2e)
Split System Heat Pump
$37,894 $544,774 27,799.11 gJ 0
Package Rooftop $63,961 $1,377,005 106,068.67 gJ 0
Ground Source Heat Pump
$344,807 $640,554 6,452.34 gJ 0
VAV Package Rooftop
$211,206 $706,716 15,599.72 gJ 0
Life Cycle Results Relative to Baseline Alternative
Alterna-tive
Base Case
LCC Invest-ment
Net Sav-ings
SIR AIRR SPP DPP Change in Energy
Change in GHG (kg CO2e)
Split Sys-tem Heat Pump
$544,774 $37,894 $832,231 � �% 0 0 -78,269.56 gJ
NaN
Package Rooftop
$1,377,005 $63,961 $0 0 0.00% 0 0 0 gJ NaN
Ground Source Heat Pump
$640,554 $344,807 $736,451 2.81 4.89% 8 9 -99,616.33 gJ
NaN
VAV
Package Rooftop
$706,716 $211,206 $670,289 3.17 5.14% 6 6 -90,468.95 gJ
NaN
8 / 33
NPV Costs by Cost Subcategory
Cost Type Split System Heat Pump
Package Rooftop Ground Source Heat Pump
VAV Package Rooftop
Energy Consumption $502,026 $1,260,668 $116,523 $281,717
Demand $0 $0 $0 $0
Rebates $0 $0 $0 $0
Water Usage $0 $0 $0 $0
Disposal $0 $0 $0 $0
Capital Compo-nents
Investment $37,894 $63,961 $344,807 $211,206
OMR $0 $0 $0 $0
Replacement $4,854 $52,375 $179,223 $213,793
Residual Value $0 $0 $0 $0
Contract Non-Recurring $0 $0 $0 $0
Recurring $0 $0 $0 $0
Other Monetary $0 $0 $0 $0
Total LCC $544,774 $1,377,005 $640,554 $706,716
9 / 33
Annual Results
10 / 33
NPV Cash Flow Comparison
Year Split System Heat Pump
Package Rooftop Ground Source Heat Pump
VAV Package Rooftop
0 $37,894 $63,961 $344,807 $211,206
1 $0 $0 $0 $0
2 $0 $0 $0 $0
3 $0 $0 $0 $0
4 $20,444 $98,859 $4,745 $11,472
5 $19,945 $50,086 $4,629 $11,192
6 $19,459 $48,864 $4,517 $10,919
7 $18,984 $47,672 $4,406 $10,653
8 $18,521 $46,510 $4,299 $10,393
9 $18,069 $45,375 $4,194 $10,140
10 $17,629 $44,269 $4,092 $9,893
11 $17,199 $43,189 $3,992 $9,651
12 $16,779 $42,135 $3,895 $9,416
13 $16,370 $41,108 $3,800 $9,186
14 $15,971 $40,105 $3,707 $8,962
15 $15,581 $39,127 $3,616 $8,744
16 $15,201 $38,173 $3,528 $8,530
17 $14,830 $37,242 $3,442 $8,322
18 $14,469 $36,333 $3,358 $8,119
19 $14,116 $35,447 $3,276 $7,921
20 $13,772 $34,583 $3,196 $7,728
21 $13,436 $33,739 $3,118 $134,851
22 $13,108 $32,916 $3,042 $7,356
23 $12,788 $32,113 $2,968 $7,176
24 $12,476 $31,330 $2,896 $7,001
25 $12,172 $30,566 $2,825 $6,830
26 $11,875 $29,820 $2,756 $6,664
27 $11,586 $29,093 $181,912 $6,501
28 $11,303 $28,384 $2,623 $6,343
29 $11,752 $28,416 $2,559 $6,912
30 $10,758 $27,016 $2,497 $6,037
31 $10,496 $26,357 $2,436 $5,890
32 $10,240 $25,714 $2,377 $5,746
33 $9,990 $25,087 $2,319 $5,606
34 $9,746 $24,475 $2,262 $5,469
35 $9,509 $23,878 $2,207 $5,336
36 $9,277 $23,296 $2,153 $5,206
37 $9,051 $22,727 $2,101 $5,079
38 $8,830 $22,173 $2,049 $4,955
39 $12,744 $25,762 $1,999 $90,592
40 $8,404 $21,105 $1,951 $4,716
Total $544,774 $1,377,005 $640,554 $706,716 11 / 33
NPV Cash Flows
Annual Results for Alternative: Split System Heat Pump
12 / 33
Cash Flow by Cost Type
Energy Water Capital Contract Other
Year Con-sump-tion
Demand Rebates Use Disposal Invest-ment
OMR Replace Resid-ual Value
Non-Re-curring
Recur-ring
Mone-tary
Total
0 $0 $0 $0 $0 $0 $37,894 $0 $0 $0 $0 $0 $0 $37,894
1 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0
2 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0
3 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0
4 $20,444 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $20,444
5 $19,945 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $19,945
6 $19,459 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $19,459
7 $18,984 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $18,984
8 $18,521 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $18,521
9 $18,069 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $18,069
10 $17,629 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $17,629
11 $17,199 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $17,199
12 $16,779 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $16,779
13 $16,370 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $16,370
14 $15,971 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $15,971
15 $15,581 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $15,581
16 $15,201 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $15,201
17 $14,830 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $14,830
18 $14,469 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $14,469
19 $14,116 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $14,116
20 $13,772 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $13,772
21 $13,436 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $13,436
22 $13,108 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $13,108
23 $12,788 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $12,788
24 $12,476 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $12,476
25 $12,172 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $12,172
26 $11,875 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $11,875
27 $11,586 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $11,586
28 $11,303 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $11,303
29 $11,027 $0 $0 $0 $0 $0 $0 $724 $0 $0 $0 $0 $11,752
30 $10,758 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $10,758
31 $10,496 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $10,496
32 $10,240 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $10,240
33 $9,990 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $9,990
34 $9,746 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $9,746
35 $9,509 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $9,509
36 $9,277 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $9,277
37 $9,051 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $9,051
38 $8,830 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $8,830
39 $8,614 $0 $0 $0 $0 $0 $0 $4,130 $0 $0 $0 $0 $12,744
40 $8,404 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $8,404
13 / 33
Cash Flows by Subtype
Annual Results for Alternative: Package Rooftop
14 / 33
Year Con-sump-tion
Demand Rebates Use Disposal Invest-ment
OMR Replace Resid-ual Value
Non-Re-curring
Recur-ring
Mone-tary
Total
0 $0 $0 $0 $0 $0 $63,961 $0 $0 $0 $0 $0 $0 $63,961
1 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0
2 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0
3 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0
4 $51,338 $0 $0 $0 $0 $0 $0 $47,521 $0 $0 $0 $0 $98,859
5 $50,086 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $50,086
6 $48,864 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $48,864
7 $47,672 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $47,672
8 $46,510 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $46,510
9 $45,375 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $45,375
10 $44,269 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $44,269
11 $43,189 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $43,189
12 $42,135 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $42,135
13 $41,108 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $41,108
14 $40,105 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $40,105
15 $39,127 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $39,127
16 $38,173 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $38,173
17 $37,242 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $37,242
18 $36,333 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $36,333
19 $35,447 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $35,447
20 $34,583 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $34,583
21 $33,739 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $33,739
22 $32,916 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $32,916
23 $32,113 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $32,113
24 $31,330 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $31,330
25 $30,566 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $30,566
26 $29,820 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $29,820
27 $29,093 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $29,093
28 $28,384 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $28,384
29 $27,691 $0 $0 $0 $0 $0 $0 $724 $0 $0 $0 $0 $28,416
30 $27,016 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $27,016
31 $26,357 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $26,357
32 $25,714 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $25,714
33 $25,087 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $25,087
34 $24,475 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $24,475
35 $23,878 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $23,878
36 $23,296 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $23,296
37 $22,727 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $22,727
38 $22,173 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $22,173
39 $21,632 $0 $0 $0 $0 $0 $0 $4,130 $0 $0 $0 $0 $25,762
40 $21,105 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $21,105
15 / 33
Annual Results for Alternative: Ground Source Heat Pump
16 / 33
Year Con-sump-tion
Demand Rebates Use Disposal Invest-ment
OMR Replace Resid-ual Value
Non-Re-curring
Recur-ring
Mone-tary
Total
0 $0 $0 $0 $0 $0 $344,807 $0 $0 $0 $0 $0 $0 $344,807
1 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0
2 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0
3 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0
4 $4,745 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $4,745
5 $4,629 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $4,629
6 $4,517 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $4,517
7 $4,406 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $4,406
8 $4,299 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $4,299
9 $4,194 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $4,194
10 $4,092 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $4,092
11 $3,992 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $3,992
12 $3,895 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $3,895
13 $3,800 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $3,800
14 $3,707 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $3,707
15 $3,616 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $3,616
16 $3,528 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $3,528
17 $3,442 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $3,442
18 $3,358 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $3,358
19 $3,276 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $3,276
20 $3,196 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $3,196
21 $3,118 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $3,118
22 $3,042 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $3,042
23 $2,968 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $2,968
24 $2,896 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $2,896
25 $2,825 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $2,825
26 $2,756 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $2,756
27 $2,689 $0 $0 $0 $0 $0 $0 $179,223 $0 $0 $0 $0 $181,912
28 $2,623 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $2,623
29 $2,559 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $2,559
30 $2,497 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $2,497
31 $2,436 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $2,436
32 $2,377 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $2,377
33 $2,319 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $2,319
34 $2,262 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $2,262
35 $2,207 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $2,207
36 $2,153 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $2,153
37 $2,101 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $2,101
38 $2,049 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $2,049
39 $1,999 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $1,999
40 $1,951 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $1,951
17 / 33
Annual Results for Alternative: VAV Package Rooftop
18 / 33
Year Con-sump-tion
Demand Rebates Use Disposal Invest-ment
OMR Replace Resid-ual Value
Non-Re-curring
Recur-ring
Mone-tary
Total
0 $0 $0 $0 $0 $0 $211,206 $0 $0 $0 $0 $0 $0 $211,206
1 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0
2 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0
3 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0
4 $11,472 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $11,472
5 $11,192 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $11,192
6 $10,919 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $10,919
7 $10,653 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $10,653
8 $10,393 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $10,393
9 $10,140 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $10,140
10 $9,893 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $9,893
11 $9,651 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $9,651
12 $9,416 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $9,416
13 $9,186 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $9,186
14 $8,962 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $8,962
15 $8,744 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $8,744
16 $8,530 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $8,530
17 $8,322 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $8,322
18 $8,119 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $8,119
19 $7,921 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $7,921
20 $7,728 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $7,728
21 $7,540 $0 $0 $0 $0 $0 $0 $127,311 $0 $0 $0 $0 $134,851
22 $7,356 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $7,356
23 $7,176 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $7,176
24 $7,001 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $7,001
25 $6,830 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $6,830
26 $6,664 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $6,664
27 $6,501 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $6,501
28 $6,343 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $6,343
29 $6,188 $0 $0 $0 $0 $0 $0 $724 $0 $0 $0 $0 $6,912
30 $6,037 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $6,037
31 $5,890 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $5,890
32 $5,746 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $5,746
33 $5,606 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $5,606
34 $5,469 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $5,469
35 $5,336 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $5,336
36 $5,206 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $5,206
37 $5,079 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $5,079
38 $4,955 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $4,955
39 $4,834 $0 $0 $0 $0 $0 $0 $85,758 $0 $0 $0 $0 $90,592
40 $4,716 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $4,716
19 / 33
20 / 33
Alternative Results
Split System Heat Pump NPV by Cost Type
Cost Type Split System Heat Pump
Energy Consumption $502,026
Demand $0
Rebates $0
Water Usage $0
Disposal $0
Capital Components Investment $37,894
OMR $0
Replacement $4,854
Residual Value $0
Contract Non-Recurring $0
Recurring $0
Other Monetary $0
Resource Use and Emissions
Resource Type Consumption Emissions
Energy Electricity 27,799.11 gJ 7,721,974 kg CO2e
Natural Gas 0 gJ 0 kg CO2e
Distillate Fuel Oil (#1, #2) 0 gJ 0 kg CO2e
Residual Fuel Oil (#4, #5, #6)
0 gJ 0 kg CO2e
Liquefied Petroleum Gas / Propane
0 gJ 0 kg CO2e
Coal 0 gJ 0 kg CO2e
Total 27,799.11 gJ 7,721,974 kg CO2e
Water Use 0 gJ 0 kg CO2e
21 / 33
Share of LCC
22 / 33
Share of Energy Use
Package Rooftop
23 / 33
NPV by Cost Type
Cost Type Package Rooftop
Energy Consumption $1,260,668
Demand $0
Rebates $0
Water Usage $0
Disposal $0
Capital Components Investment $63,961
OMR $0
Replacement $52,375
Residual Value $0
Contract Non-Recurring $0
Recurring $0
Other Monetary $0
Resource Use and Emissions
Resource Type Consumption Emissions
Energy Electricity 16,760.29 gJ 4,655,636 kg CO2e
Natural Gas 172,744.34 gJ 1,637,616.3 kg CO2e
Distillate Fuel Oil (#1, #2) 0 gJ 0 kg CO2e
Residual Fuel Oil (#4, #5, #6)
0 gJ 0 kg CO2e
Liquefied Petroleum Gas / Propane
0 gJ 0 kg CO2e
Coal 0 gJ 0 kg CO2e
Total 106,068.67 gJ 6,293,252.3 kg CO2e
24 / 33
25 / 33
Ground Source Heat Pump
26 / 33
Cost Type Ground Source Heat Pump
Energy Consumption $116,523
Demand $0
Rebates $0
Water Usage $0
Disposal $0
Capital Components Investment $344,807
OMR $0
Replacement $179,223
Residual Value $0
Contract Non-Recurring $0
Recurring $0
Other Monetary $0
Resource Use and Emissions
Resource Type Consumption Emissions
Energy Electricity 6,452.34 gJ 1,792,317 kg CO2e
Natural Gas 0 gJ 0 kg CO2e
Distillate Fuel Oil (#1, #2) 0 gJ 0 kg CO2e
Residual Fuel Oil (#4, #5, #6)
0 gJ 0 kg CO2e
Liquefied Petroleum Gas / Propane
0 gJ 0 kg CO2e
Coal 0 gJ 0 kg CO2e
Total 6,452.34 gJ 1,792,317 kg CO2e
27 / 33
28 / 33
VAV Package Rooftop
29 / 33
Cost Type VAV Package Rooftop
Energy Consumption $281,717
Demand $0
Rebates $0
Water Usage $0
Disposal $0
Capital Components Investment $211,206
OMR $0
Replacement $213,793
Residual Value $0
Contract Non-Recurring $0
Recurring $0
Other Monetary $0
Resource Use and Emissions
Resource Type Consumption Emissions
Energy Electricity 15,599.72 gJ 4,333,255 kg CO2e
Natural Gas 0 gJ 0 kg CO2e
Distillate Fuel Oil (#1, #2) 0 gJ 0 kg CO2e
Residual Fuel Oil (#4, #5, #6)
0 gJ 0 kg CO2e
Liquefied Petroleum Gas / Propane
0 gJ 0 kg CO2e
Coal 0 gJ 0 kg CO2e
Total 15,599.72 gJ 4,333,255 kg CO2e
30 / 33
31 / 33
This software was developed at the National Institute of Standards and Technology by employees of the Federal Government in the course of their official duties. Pursuant to title 17 Section 105 of the United States Code this software is not subject to copyright protection and is in the public domain. It is an experimental system. NIST assumes no responsibility whatsoever for its use by other parties, and makes no guarantees, expressed or implied, about its quality, reliability, or any other characteristic. We would appreciate acknowledgement if the software is used. This software can be redistributed and/or modified freely provided
32 / 33 that any derivative works bear some notice that they are derived from it, and any modified versions bear some notice that they have been modified.
33 / 33
Solar Hot Water Calculations Solar fraction=fraction of load met by solar 30%
5/19/2026 English Units
Vdaily Daily Hot Water Use (volume/day) 107.00 *gallons/day
Tcold Cold Incoming Water Temperature 50.00 F
Thot Hot Water Delivery Temperature 140.00 F
Qload Equation:
Building Hot Water Energy Requirement 0.80 therms/day cfuel Cost of Electricity or Fuel ($/therm) Used for Water Heating 0.96 $/therm η heating Thermal Efficiency of Conventional Heating
System 0.98 η solar Efficiency of Solar Water Heater 0.3
% Utilization Fraction of delivered heat that can be used.
0.9
IC,max Maximum daily solar insolation on tilt=latitude. 1776 Btu/ft2/day
IC,ave Average daily solar insolation on tilt=latitude. 1522 Btu/ft2/day
AC Equation:
Area of Solar Collector 45.2 ft2
Qload Equation:
Annual Energy to Heat Water 293 therms/year
Qsolar Equation:
Annual Solar Heat Delivery 68 therms/year
SF Equation:
Fraction of Load Provided by Solar 0.23
Qsavings Equation:
Annual Savings in Heating Fuel 69 therms/year
Qpump Equation:
Annual Parasitic Pump Energy 1 therms/year
Economic Results
Cunit Unit Cost of Solar Water System 74 $/ft2
Cinitial Equation:
Initial Cost of Solar Heating System $3,342
Csavings Equation: Annual Energy Cost Savings
Energy Cost times (Qsavings minus Qpump) $66
CO&M Annual Operation & Maintenance Cost
0.5% of initial cost per year $17
SPB (Simple Payback Period, years)
Equation:
Simple Payback Period (years) 68.0
SIR (Savings-to-Investment
Ratio)
Equation:
Savings-to-Investment Ratio
0.26 Not LCCE
* Total HW capacity based on fixture counts from Domestic Water Service Calc.
Solar Resource Data
Hot Water Use Information
Stipulated Design Values:
Calculated Energy Results:
| LCCA P1476U Fire Station Addition |
| P1476U Solar Hot Water Calcs |
File details come from the government source that posted it. Updated .