2017 WEL Networks
|
Annual Report
04
QUICK FACTS
AS AT 31 MARCH 2017
*SAIDI – System Average Interruption Duration Index (the average number of minutes that customers were
without electricity)
**Regulatory SAIDI = 50% * Planned SAIDI + Unplanned SAIDI (a Commerce Commission calculation plus other
normalisation process)
CATEGORY
KM
%
Overhead lines
3,466
52%
Underground
3,149
48%
Total
6,616
100%
OUTAGE CAUSES
SAIDI* MINUTES % OF SAIDI MINUTES
Equipment faults
10.11
10%
Adverse weather and other
foreign interference
33.65
33%
Vehicle accidents
13.18
13%
Planned shutdowns
32.42
32%
Insulators and discs
7.01
7%
Tree contacts
5.74
6%
Total
102.11
100%
Total Regulatory SAIDI**
82.63
–
(Excl. street lighting pilots, fibre and communications lines)
KILOMETRES
OF LINES
OUTAGES
STAFF MEMBERS
ANNUAL REVENUE
234
(BEFORE
$194 MILLION
DISCOUNT)
MAXIMUM
DEMAND
273 MEGAWATTS
$81.7 MILLION
NETWORK CONNECTIONS
RESIDENTIAL
COMMERCIAL/INDUSTRIAL
(INCLUDING EMBEDDED NETWORKS)
89,108
762
ANNUAL INVESTMENT
IN CAPITAL PROJECTS
VOLUME THROUGHPUT
(WEL TRADITIONAL AREA AFTER
TECHNICAL LOSS FACTORS)
GIGAWATT
1,194
HOURS
