HVAC
HVDC
Transpower determines AC Revenue
Requirement
($854.6m)
Transpower determines DC Revenue
Requirement
($149.7m)
Deduction made for Prudent Discount Revenue
($0.5m)
Deduction made for Prudent Discount Revenue
($2.8m) and Voluntary Adjustment ($9.7m)
Connection Total $126.9m
Connection Charges – Components of connection
charges are Asset, Maintenance, Operating
Recovery and Injection Overhead
Connection Charge =
Σ(Asset Recovery + Operating +
Maintenance)
HVDC Rates equal (a) 75% DC Rev Req divided by
total HAMI, and (b) 25% DC Rev Req divided by
total SIMI, all allocated to South Island customers
that net inject
HVDC Total $149.2m
Interconnection Rate equals AC Revenue
Requirement less connection charges and
deductions divided by total RCPD. Allocated to
customers who off-take during regional peak
periods
HAMI Rate
75% HVDC Rev Req ÷ HAMI =
$34.75/kW
SIMI Rate
25% HVDC Rev Req ÷ SIMI =
$2.08/MWh
Interconnection Total $715.2m
Interconnection Charges – individual customer
charge equals interconnection rate multiplied by
customer contribution to RCPD
Interconnection Rate =
Interconnection Revenue ÷ RCPD =
$123.98/kW
HVDC Charges – individual customer charges
equal HAMI rate multiplied by customer HAMI
plus SIMI rate multiplied by customer SIMI.
HAMI (MW) & SIMI(GWh)
Total HAMI = 3,221
Total SIMI = 17,900
RCPD (MW)
Total RCPD = 5,768
∑UNI =1,934
∑LNI = 1,877
∑USI = 964
∑LSI = 993
Transmission Pricing Data for 2017/18 Pricing Year
Pricing Year 1 April 2017 to 31 March 2018
Capacity measurement period 1 September 2015 to 31 August 2016
Capacity Data
2008/09
2009 / 10
2010 / 11
2011 / 12
2012 / 13
2013 / 14
2014/15
2015/16
2016/17
2017/18
3,286
3,200
3,206
3,202
3,161
3,197
3,251
3,225
3,223
3,221
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-
-
-
-
-
-
-
-
17,900
6,052
5,825
5,980
5,872
6,032
5,780
5,775
5,729
5,775
5,768
RCPD – Upper North Island (UNI)
1,932
1,857
1,989
1,928
2,024
1,882
1,914
1,904
1,904
1,934
RCPD – Lower North Island (LNI)
2,018
1,889
1,964
1,908
1,922
1,879
1,892
1,890
1,897
1,877
RCPD – Upper South Island (USI)
1,050
1,055
1,031
1,025
1,051
997
1,009
966
980
964
RCPD – Lower South Island (LSI)
1,052
1,025
995
1,011
1,035
1,005
961
968
994
993
2008/09
2009 / 10
2010 / 11
2011 / 12
2012 / 13
2013 / 14
2014/15
2015/16
2016/17
2017/18
122.81
127.03
126.22
118.99
128.69
135.67
138.09
127.68
128.57
126.95
Pre-tax (%)
11.14
11.14
11.14
9.81
9.99
9.99
9.99
8.94
8.94
8.94
Post-tax (%)
7.80
7.80
7.80
7.06
7.19
7.19
7.19
6.44
6.44
6.44
6.93
7.10
7.00
6.21
6.68
7.55
7.71
7.80
7.97
8.26
1.93
2.02
2.17
2.21
2.21
2.21
2.04
2.00
1.87
1.83
220kV tower lines ($/km)
2,734
3,145
3,355
3,804
4,613
4,877
5,015
5,381
5,242
5,225
All other tower lines ($/km)
2,851
3,059
3,427
4,225
4,759
5,378
5,959
7,269
5,326
4,980
Pole lines ($/km)
2,758
2,989
3,199
3,594
4,128
5,593
6,200
8,387
4,301
3,683
5.90
3.26
2.53
3.13
3.98
3.53
3.48
4.42
5.03
4.69
Operating Recovery Rate ($/switch)
1,064
1,109
1,132
1,086
1,134
992
908
1,016
1,107
1,207
Total Interconnection Revenue ($m)
385.75
411.50
413.61
447.06
546.98
574.15
661.11
632.19
662.09
715.16
Interconnection Rate ($/kW)
63.74
70.94
69.12
76.14
90.66
99.44
114.47
110.35
114.64
123.98
Total HVDC Revenue ($m)
82.96
78.34
84.84
117.11
128.77
162.47
145.00
149.93
152.27
149.24
HAMI Rate ($/kW)
25.25
24.48
26.46
36.58
40.73
50.82
44.60
46.49
47.24
34.75
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-
-
-
-
-
-
-
-
2.08
Historical Anytime Maximum Injection (MW)
South Island Mean Injection (GWh)
Total Regional Coincident Peak Demand (MW)
Revenue and Rates
Total Connection Charge Revenue ($m)
WACC
Asset Return Rate (%)
Substations (%)
Maintenance
Recovery Rates
Injection Overhead Rate (%)
SIMI Rate ($/MWh)