June 2021 Operating Report

Monthly Operating Report
June 2021
Putting our energy where it matters

Contact Energy / Monthly Operating Report
2
»The Customer business recorded:
•Mass market electricity and gas sales of 422GWh (June 2020:
447 GWh)
•Mass market electricity and gas netback of $96.23/MWh (June
2020 : $101.03/MWh)
»The Wholesale business recorded:
•Contracted Wholesale electricity sales, including that sold to
the Customer business, totalled 768GWh (June 2020 : 829
GWh)
•Electricity and steam net revenueof $126.72/MWh (June
2020: $94.80/MWh)
•Electricity generated (or acquired) of 880 GWh (June 2020:
877 GWh)
•The unit generation cost, which includes acquired generation
was $44.58/MWh (June 2020 : $42.82/MWh)
•Own generation cost in the month of $38.22/MWh (June
2020 : $37.02/MWh)
»Otahuhu futures settlement wholesale price for
the 4
th
quarter of 2021 (ASX):
•As at13 July 2021: $142/MWh
•As at30 June 2021: $152/MWh
•As at31 May 2021 : $176/MWh
»As at13 July 2021, South Island controlled
storage was 96% of mean and North Island
controlled storage was 49% of mean
•As at13 July 2021, total Clutha scheme
storage (including uncontrolled storage)
was 122% of mean
•Inflows into Contact’s Clutha catchment
for June 2021 were 131% of mean
(May 2021: 97%
April 2021: 116%
March 2021: 95%)
For the month of June 2021
Contact has received notice from OMV that the volume of Maui gas available under our contract for the 2022 calendar year will increase from 7.45PJ as was
previously notified to 10PJ. Contact has agreed to purchasethefullentitlement.

0
100
200
300
CY21CY22CY23CY24
$/MWh
30/06/202031/05/202130/06/2021
0
100
200
300
CY21CY22CY23CY24
$/MWh
30/06/202031/05/202130/06/2021
New Zealand controlled hydro storage against mean
ASX futures settlement
Contact Energy / Monthly Operating Report
3
12 MONTHS
Otahuhu
Benmore
0
500
1000
1500
2000
2500
3000
3500
4000
4500
JulAugSepOctNovDecJanFebMarAprMayJun
GWh
South Island ActualNorth Island Actual
South Island post-market meanNational post-market mean

0%
20%
40%
60%
80%
100%
<$35$36-$60$61-$85$86-$110$111-$135$136-$160>$160
% of trading
periods
Jun-21Jun-20May-21
0%
20%
40%
60%
80%
100%
<$35$36-$60$61-$85$86-$110$111-$135$136-$160>$160
% of trading
periods
Jun-21Jun-20May-21
0
50
100
150
200
250
300
$/MWh
FY20 BENFY21 BENFY20 OTAFY21 OTA
Wholesale electricity pricing
Otahuhu
Contact Energy / Monthly Operating Report
4
Benmore
Distribution of wholesale market price by trading periods
Jul Aug Sept Oct Nov Dec Jan Feb Mar Apr May Jun

-
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
JulAugSepOctNovDecJanFebMarAprMayJun
GWh
North IslandSouth Island (exc. NZAS)NZAS
Contact Energy / Monthly Operating Report
5
Total national demand
Regional demand change (%) on June 2020
»New Zealand electricity demand was up 0.5% on June 2020 (down 0.7% on
June 2019):
•Cumulative 12 months demand for July 2020 to June 2021 of 41,505 GWh is
up 0.7% to the prior comparative period.
Source: Contact and Electricity Authority grid demand (reconciled) http://www.emi.ea.govt.nz
FY19, 20 and 21 respectively
Regional demand is excluding NZAS
Nationwide
temperatures for June
2021 were 10.6ºC,
0.6ºC higher than June
2020: 10.0ºC

-
20
40
60
80
100
120
0
100
200
300
400
500
600
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
$/MWh
GWh
Mass market electricity salesRetail gas salesNetback
-
10
20
30
40
50
60
70
80
90
100
-
100
200
300
400
500
600
700
800
900
1,000
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
$/MWh
GWh
GeothermalHydroThermal
Acquired generationContracted electricity salesUnit generation cost (RHS)
Wholesale
Contact Energy / Monthly Operating Report
6
Customer
Generation mix, gross sales position and unit generation cost (FY20 and 21 respectively)
Retail sales volumes and netback (FY20 and 21 respectively)

Contact Energy / Monthly Operating Report
7
Measure
The month ended The month ended The month ended
Twelve months
ended
Twelve months
ended
June 21June 20May 21June 21June 20
Customer
Mass market electricity salesGWh
341 357 307 3,380 3,523
Retail gas salesGWh
81 90 65 780 838
Mass market electricity and gas salesGWh
422 447 372 4,161 4,361
Average electricity sales price$/MWh
240.16 236.67 246.34 247.88 244.45
Electricity direct pass thru costs$/MWh
(107.89)(107.66)(109.73)(111.68)(117.60)
Cost to serve$/MWh
(20.68)(11.90)(18.91)(19.52)(18.20)
Customer netback$/MWh
96.23 101.03 103.66 100.35 93.11
Energy cost$/MWh
(91.91)(94.77)(92.92)(87.03)(81.62)
Actual electricity line losses%
-1%6%7%6%6%
Retail gas salesPJ
0.3 0.3 0.2 2.8 3.0
Electricity ICPs#
407,000 417,500 405,500 407,000 410,000
Gas ICPs#
65,500 65,000 65,000 64,500 65,500
Broadband connections#
51,000 26,000 48,000 39,000 20,000
Wholesale
Electricity sales to Customer businessGWh
337 378 331 3,605 3,741
Electricity sales to Commercial and IndustrialGWh
123 144 133 1,844 2,171
Electricity CFD salesGWh
307 307 381 2,673 2,085
Contracted electricity salesGWh
768 829 846 8,121 7,997
Steam salesGWh
19 20 36 645 544
Total electricity and steam net revenue$/MWh
126.72 94.80 122.68 93.61 80.62
C&I netback (at the ICP)$/MWh
110.02 92.35 97.04 86.33 84.26
C&I line losses%
13%4%5%5%5%
Thermal generationGWh
184 266 220 1,592 1,360
Geothermal generationGWh
269 263 276 3,114 3,333
Hydro generationGWh
353 285 314 3,698 3,752
Spot electricity salesGWh
805 815 809 8,404 8,444
Electricity sales -DirectGWh
1 1 4 81 79
Acquired generationGWh
74 61 80 554 335
Electricity generated (or acquired)GWh
880 877 893 9,040 8,858
Unit generation cost (including acquired generation)$/MWh
(44.58)(42.82)(58.74)(42.15)(34.29)
Spot electricity purchasesGWh
(460)(521)(461)(5,367)(5,833)
CFD sale settlementsGWh
(307)(307)(381)(2,673)(2,085)
Spot exposed purchases / CFD settlementGWh
(767)(828)(842)(8,040)(7,918)
Spot revenue and settlement on acquired generation (GWAP)$/MWh
253.04 160.43 286.35 178.28 100.27
Spot purchases and settlement on CFDs sold (LWAP)$/MWh
(265.52)(161.03)(294.07)(187.70)(106.04)
LWAP/GWAP%
105%100%103%105%106%
Gas used in internal generationPJ
1.4 2.1 1.9 15.0 13.3
Gas storage net movement (extraction) / injectionPJ
(0.2)(0.7)(0.4)(0.4)1.7
Contact
Total customer connections#
532,000 510,000 527,000 518,000 498,000

Contact Energy / Monthly Operating Report
8
investor.centre@contactenergy.co.nz
contact.co.nz/aboutus/investor-centre
+64 21 072 8578
Investors
Matthew Forbes –GM Corporate Finance
contact.co.nz
@ContactEnergy
Linkedin.com/company/contact-energy-ltd
Facebook.com/contactenergy
Youtube.com/ContactEnergy
To find out more about Contact Energy