IEEE Electrification Magazine - March 2015 - 59

6

80
60
40

Record High (°F)
Average High (°F)
Average Low (°F)
Record Low (°F)

20

5
4
3
2
1
0

Ja
nu
Fe ary
br
ua
r
M y
ar
ch
Ap
ril
M
ay
Ju
ne
Ju
A ly
Se ug
pt ust
em
b
O er
ct
N ob
ov e
e r
D mb
ec e
em r
be
r

0

Ja
nu
Fe ary
br
ua
r
M y
ar
ch
Ap
ril
M
ay
Ju
ne
Ju
Au ly
Se g
pt ust
em
b
O er
ct
N ob
ov e
e r
D mb
ec e
em r
be
r

Temperature (°F)

100

Average Precipitation (in)

120

(a)

(b)

Figure 2. The monthly climate data for St. Thomas, U.S. Virgin Islands: (a) temperature and (b) precipitation. (Source: weather.com.)

24.9 and 34.5 kV for St. Thomas and St. Croix, respectively. St.
Croix is currently in the process of upgrading parts of its system to operate at 69 kV. The distribution systems are typically
operated at 13.8 kV. The total technical and nontechnical losses were estimated at 6% on the St. Thomas-St. John system
and more than 13% on the St. Croix system.

Energy Cost
Similar to many island communities, the U.S. Virgin Islands
are 100% dependent on imported fuel oil for electricity. Retail
electricity rates in 2011 reached as high as US$0.49/kWh
and were as high as US$0.52/kWh following the oil price
spikes of 2008. The electricity generation and distribution
systems in the U.S. Virgin Islands are owned, operated, and
maintained by the Virgin Islands Water and Power Authority

San Juan
Vieques
22
3
Bayamón Carolina
52 Puerto Rico Fajardo
Ceiba
Caguas
53
San Lorenzo
Cidra
Humacao
Cayey
Yabucoa
52

Figure 3. Tourism is the primary economic activity in the U.S.
Virgin Islands, which are known for their white-sand beaches.
(Photo courtesy of http://www.imagebrowse.com/us-virgin-islandbackgrounds/.)

St. Thomas
Charlotte
Amalie

British Virgin
Islands
St. John

Vieques

Guayama

St. Croix
Virgin
Islands

Figure 4. The conceptual interconnection between the U.S. Virgin Islands, Puerto Rico, and the British Virgin Islands. (The line information is
from a public report: http://www.viwapa.vi/AboutUs/Projects/ProjectDetails/11-08-02/USVI-BVI-Puerto_Rico_Interconnection.aspx. Map image
courtesy of Google Maps, illustration added.)

IEEE Electrific ation Magazine / march 2 0 1 5

59


http://www.weather.com http://www.imagebrowse.com/us-virgin-island http://www.viwapa.vi/AboutUs/Projects/ProjectDetails/11-08-02/USVI-BVI-Puerto_Rico_Interconnection.aspx

Table of Contents for the Digital Edition of IEEE Electrification Magazine - March 2015

IEEE Electrification Magazine - March 2015 - Cover1
IEEE Electrification Magazine - March 2015 - Cover2
IEEE Electrification Magazine - March 2015 - 1
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IEEE Electrification Magazine - March 2015 - Cover3
IEEE Electrification Magazine - March 2015 - Cover4
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