Our Numbers
91,385,291
Kilowatts Saved
127,210,038
Square Feet
Assessed
488
Buildings
Assessed
70
cities in North America, and 4 in China
Assessment Performance Metrics
Financial Savings
- Dollars Saved: Over 12.9 Million
- Average Dollar Per SF Saved: $0.14
Environmental Savings
- Greenhouse Gasses Eliminated: 118,800,000 lb-co2-yr.
- Average CO2 Saved Per sqft: 1.28lb/sqft/year
- Average Kilowatts Per sqft Saved: 1.2 kWH
Assessment Stats
- Average sqft of Buildings Assessed: 260,248 sqft
- Largest Audit: Shanghai Twr - 4,090,300 sqft
- Smallest Audit: Palo Alto Square - 23,347 sqft
Case Studies
Explore our most successful audit case studies. Click for an in-depth report of each project.
Dallas, TX
Beijing, China-2
La Jolla, CA
San Ramon, CA
Sacramento, CA
Seattle, WA
Los Angeles, CA
Fort Launderdale, FL
San Francisco, CA
Long Beach, CA
Washington, DC
Shanghai, China
Assessed & Audited Buildings
Each building below has been audited or assessed by Optimal Building, and the saving created by our recommendations.
1001 Pennsylvania Avenue
Washington, DC
$0.03
$/sf
0.45
kwh/sf
376,716
kwh saved
10877 White Rock
Sacramento, CA
$0.31
$/sf
2.05
kwh/sf
210,869
kwh saved
1155 Perimeter Center
Atlanta, GA
$0.11
$/sf
1.48
kwh/sf
458,035
kwh saved
11601 Wilshire Blvd.
Los Angeles, CA
$0.08
$/sf
0.64
kwh/sf
320,124
kwh saved
1515 Clay Street
Oakland, CA
$0.11
$/sf
0.64
kwh/sf
445,000
kwh saved
1525 Wilson Blvd
Arlington, VA
$0.24
$/sf
1.78
kwh/sf
565,830
kwh saved
1740 Technology Road
San Jose, CA
$0.15
$/sf
1.36
kwh/sf
292,564
kwh saved
1600 7th Street
Seattle , WA
$0.61
$/sf
0.54
kwh/sf
353,524
kwh saved
180 Grand Street
Oakland, CA
$0.25
$/sf
0.97
kwh/sf
273,095
kwh saved
1801-1841 Page Mill Rd.
Palo Alto, CA
$0.20
$/sf
1.13
kwh/sf
130,557
kwh saved
1999 Avenue of Stars Building
Los Angeles, CA
$0.07
$/sf
0.27
kwh/sf
225,780
kwh saved
1875 K Street
Washington, DC
$0.16
$/sf
1.06
kwh/sf
201,163
kwh saved
1920 & 2010 Centerview
Irvine, CA
$0.05
$/sf
1.08
kwh/sf
625,000
kwh saved
201 Redwood Shores
Redwood City, CA
$0.34
$/sf
1.55
kwh/sf
218,586
kwh saved
2001 Gateway East - West
San Jose, CA
$0.12
$/sf
1.49
kwh/sf
254,744
kwh saved
203 Redwood Shores
Redwood City, CA
$0.24
$/sf
1.19
kwh/sf
231,704
kwh saved
202 & 206 Cousteau Pl. - Mace Ranch CC
Sacramento, CA
$0.38
$/sf
1.83
kwh/sf
372,982
kwh saved
2033 Gateway Place
San Jose, CA
$0.12
$/sf
1.17
kwh/sf
157,930
kwh saved
2099 Gateway Place
San Jose, CA
$0.27
$/sf
2.30
kwh/sf
288,682
kwh saved
2077 Gateway Place
San Jose, CA
$0.30
$/sf
2.57
kwh/sf
225,595
kwh saved
2055 Gateway Place
San Jose, CA
$0.26
$/sf
1.90
kwh/sf
237,850
kwh saved
224 Airport Drive
San Jose, CA
$0.27
$/sf
2.09
kwh/sf
253,682
kwh saved
226 Airport Drive
San Jose, CA
$0.39
$/sf
2.90
kwh/sf
388,524
kwh saved
224 South Michigan
Chicago, IL
$0.09
$/sf
1.15
kwh/sf
476,083
kwh saved
2365 Iron Point Road
Folsom, CA
$0.25
$/sf
1.78
kwh/sf
215,646
kwh saved
235 Montgomery - Russ Building
San Francisco, CA
$0.10
$/sf
0.26
kwh/sf
148,788
kwh saved
25 Massachusetts Avenue
Boston, MA
$0.13
$/sf
0.91
kwh/sf
361,800
kwh saved
2420 Del Paso Rd.
Sacramento, CA
$0.06
$/sf
0.46
kwh/sf
49,700
kwh saved
2485, 2495 Natomas
Natomas, CA
$0.14
$/sf
1.27
kwh/sf
365,000
kwh saved
251 Causeway
Newton, MA
$0.55
$/sf
1.96
kwh/sf
294,768
kwh saved
275 Brannan Street
San Francisco, CA
$0.28
$/sf
0.98
kwh/sf
53,549
kwh saved
321 E. 2nd Street
Los Angeles, CA
$0.78
$/sf
3.15
kwh/sf
173,097
kwh saved
33 New Montgomery
San Francisco, CA
$0.31
$/sf
2.35
kwh/sf
575,000
kwh saved
33 Arch Street
Boston, MA
$0.12
$/sf
1.07
kwh/sf
646,744
kwh saved
400 S. El Camino Real
San Mateo, CA
$0.76
$/sf
7.63
kwh/sf
1,100,000
kwh saved
333 Twin Dolphin Road
Redwood City, CA
$0.10
$/sf
0.60
kwh/sf
110,427
kwh saved
411 1st Street
Seattle , WA
$0.04
$/sf
0.49
kwh/sf
80,101
kwh saved
4181 Ruffin Rd.
San Diego, CA
$0.11
$/sf
0.74
kwh/sf
139,681
kwh saved
4th & Madison
Seattle, WA
$0.09
$/sf
0.68
kwh/sf
576,344
kwh saved
505 1st Street
Seattle, WA
$0.12
$/sf
1.55
kwh/sf
446,969
kwh saved
50 California
San Francisco, CA
$0.06
$/sf
0.26
kwh/sf
180,000
kwh saved
550 Brand Street
Los Angeles, CA
$0.12
$/sf
0.84
kwh/sf
255,000
kwh saved
555 Market Street
San Francisco, CA
$0.09
$/sf
0.46
kwh/sf
128,690
kwh saved
555 Twin Dolphin Road
Redwood City, CA
$0.15
$/sf
0.86
kwh/sf
171,861
kwh saved
575 Market Street
San Francisco, CA
$0.04
$/sf
0.18
kwh/sf
84,514
kwh saved
610 West Ash Street
San Diego, CA
$0.15
$/sf
0.79
kwh/sf
150,000
kwh saved
621 Capitol Mall
Sacramento, CA
$0.18
$/sf
1.14
kwh/sf
433,566
kwh saved
625-2nd Street
San Francisco, CA
$0.43
$/sf
2.05
kwh/sf
290,559
kwh saved
655 Montgomery
San Francisco, CA
$0.43
$/sf
1.77
kwh/sf
468,492
kwh saved
700-13th Street
Washington, DC
$0.18
$/sf
1.15
kwh/sf
415,000
kwh saved
700 6th Street
Washington, DC
$0.11
$/sf
0.84
kwh/sf
252,360
kwh saved
707 – 17th Street
Denver, CO
$0.11
$/sf
0.68
kwh/sf
435,000
kwh saved
717 - 17th Street
Denver, CO
$0.11
$/sf
0.64
kwh/sf
450,000
kwh saved
83 King Street
Seattle, WA
$0.09
$/sf
1.17
kwh/sf
215,291
kwh saved
901 Market Street
San Francisco, CA
$0.29
$/sf
1.17
kwh/sf
257,081
kwh saved
875 Howard
San Francisco, CA
$0.18
$/sf
1.31
kwh/sf
261,337
kwh saved
959 Skyway Landing
Redwood City, CA
$0.09
$/sf
0.75
kwh/sf
88,745
kwh saved
989 Tower Road
Foster City, CA
$0.10
$/sf
0.88
kwh/sf
126,994
kwh saved
999 Skyway Landing
Redwood City, CA
$0.10
$/sf
0.70
kwh/sf
82,889
kwh saved
Auto Nation
Fort Lauderdale, FL
$0.13
$/sf
1.35
kwh/sf
275,000
kwh saved
Bishop Ranch (20) Buildings
San Ramon, CA
$0.11
$/sf
0.52
kwh/sf
1,936,278
kwh saved
Capitol Place
Sacramento, CA
$0.20
$/sf
1.24
kwh/sf
203,964
kwh saved
CA Department of Technology
Sacramento, CA
$0.10
$/sf
0.96
kwh/sf
148,000
kwh saved
Center Plaza
Boston, MA
$0.11
$/sf
0.63
kwh/sf
468,845
kwh saved
City Place Office
West Palm Beach, FL
$0.03
$/sf
0.37
kwh/sf
117,873
kwh saved
Columbus Center
Coral Gables, FL
$0.12
$/sf
1.11
kwh/sf
292,660
kwh saved
Colonnade Center
San Antonia, TX
$0.11
$/sf
1.10
kwh/sf
152,366
kwh saved
Concourse III, IV - 1731, 1735 Tech.DR.
San Jose, CA
$0.26
$/sf
0.53
kwh/sf
171,978
kwh saved
Colonnade Office Buildings
Dallas, TX
$0.09
$/sf
0.92
kwh/sf
1,052,649
kwh saved
Del Amo Center
Torrance, CA
$0.56
$/sf
3.65
kwh/sf
426,382
kwh saved
Drakes Landing
Marin, CA
$0.08
$/sf
0.71
kwh/sf
94,400
kwh saved
DOT Head Quarters Bldg.
Sacramento, CA
$0.16
$/sf
1.39
kwh/sf
644,524
kwh saved
EmeryTech
Emeryville, CA
$0.06
$/sf
0.33
kwh/sf
74,380
kwh saved
Esplanade Towers #1 - 4
Phoenix, AZ
$0.08
$/sf
0.78
kwh/sf
760,804
kwh saved
Ferry Building
San Francisco, CA
$0.35
$/sf
1.80
kwh/sf
359,945
kwh saved
Five Post Oak Park
Houston, TX
$0.10
$/sf
1.25
kwh/sf
708,826
kwh saved
Four Oaks Place
Houston, TX
$0.08
$/sf
0.64
kwh/sf
1,200,000
kwh saved
Folsom Corporate Center
Folsom, CA
$0.19
$/sf
1.39
kwh/sf
215,646
kwh saved
Hitachi America
Brisbane, CA
$0.35
$/sf
2.56
kwh/sf
550,000
kwh saved
Franklin Square
Washington, DC
$0.08
$/sf
0.66
kwh/sf
335,000
kwh saved
Genesse Executive Plaza
San Diego, CA
$0.16
$/sf
1.00
kwh/sf
322,533
kwh saved
Long Beach City Hall
Long Beach, CA
$0.26
$/sf
1.73
kwh/sf
468,330
kwh saved
Long Beach Library
Long Beach, CA
$0.41
$/sf
2.54
kwh/sf
228,977
kwh saved
Meir Frank Depot
Seattle, WA
$0.37
$/sf
4.22
kwh/sf
548,107
kwh saved
Media Studios North
Burbank, CA
$0.08
$/sf
0.50
kwh/sf
602,341
kwh saved
Long Beach Port
Long Beach, CA
$0.33
$/sf
2.00
kwh/sf
480,595
kwh saved
Met Park North
Seattle, CA
$0.07
$/sf
0.75
kwh/sf
153,777
kwh saved
Memorial Herman Medical Plaza
Houston, TX
$0.02
$/sf
0.20
kwh/sf
102,912
kwh saved
Metro Center - 950 Tower Road
Foster City, CA
$0.20
$/sf
1.92
kwh/sf
922,164
kwh saved
Metro Place I, II, III
San Jose, CA
$0.47
$/sf
1.56
kwh/sf
751,687
kwh saved
Metro Point I, II
Denver, CO
$0.04
$/sf
0.43
kwh/sf
197,123
kwh saved
National Cancer Institute
Arlington, VA
$0.05
$/sf
0.45
kwh/sf
273,375
kwh saved
National Research Center
Arlington, VA
$0.06
$/sf
0.63
kwh/sf
225,000
kwh saved
National Institute of Allergy & Infectious Disease
Arlington, VA
$0.03
$/sf
0.51
kwh/sf
261,446
kwh saved
One & Two Potomic Yard
Arlington, VA
$0.10
$/sf
1.17
kwh/sf
760,993
kwh saved
New River Center
Fort Lauderdale, FL
$0.15
$/sf
1.50
kwh/sf
422,315
kwh saved
One Del Mar
San Diego, CA
$0.14
$/sf
0.64
kwh/sf
77,000
kwh saved
One Boston Place
Boston, MA
$0.03
$/sf
0.30
kwh/sf
245,843
kwh saved
Oyster Point Marina Plaza
South San Francisco, CA
$0.17
$/sf
0.72
kwh/sf
338,574
kwh saved
Oyster Point Marina Plaza
South San Francisco, CA
$0.14
$/sf
0.73
kwh/sf
340,167
kwh saved
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