April 2026 Operating Report

Monthly Operating Report
April 2026

2
April 2026 overview
»The Customer business recorded:
•Mass market electricity and gas sales of 372GWh (April 2025:
284GWh)
•Mass market netback of $153.24/MWh (April 2025:
$148.59/MWh)
»The Wholesale business recorded:
•Contracted wholesale electricity sales, including that sold to the
Customer business, totalled 898GWh (April 2025: 655GWh)
•Electricity and steam net revenueof $148.95/MWh (April 2025:
$146.59/MWh)
•Electricity generated (or acquired) of 962GWh (April 2025:
722GWh)
•Unit generation cost, which includes acquired generation was
$44.95/MWh (April 2025: $49.48/MWh)
•Own generation cost in the month of $31.60/MWh (April
2025: $41.60/MWh)
»Otahuhu futures settlement wholesale price for the 3
rd
quarter of
2026 (ASX):
•As at15 May 2026: $141/MWh
•As at30 April 2026: $144/MWh
•As at31 March 2026: $189/MWh
»As at17
th
May 2026, South Island controlled storage was 107% of
mean and North Island controlled storage was 179% of mean.​
»As at17
th
May 2026, total Clutha scheme storage was 112%
of mean.​
»Inflows into Contact’s Clutha catchment for April 2026
were 123% of mean. (March 2026: 85%, February 2026:
73%, January 2026: 110%).
»Contact’s contracted gas volume (including contracted swaps)
for the next 12 months is 8.7PJ.
»Contact’s current renewable development projects under
construction:
Project Costs
1
Expected OnlineProject
$273mQ3-CY26Kōwhai Park Solar
2
$712mQ3-CY27Te Mihi Stage 2 geothermal
$235mQ1-CY28Glenbrook-Ohurua Battery 2
1
Total approved project costs. For inclusions and exclusions from total, see Contact’s full disclosures associated
with investment announcements.
2
Being delivered by Contact’s 50/50 Joint Venture with Lightsource bp.

New Zealand controlled hydro storage
against mean / 12 months
ASX futures settlement
Hydro storage and forward prices
3
Benmore
Otahuhu
Contact Energy / Monthly Operating Report
0
500
1000
1500
2000
2500
3000
3500
4000
4500
MayJunJulAugSepOctNovDecJanFebMarAprMay
GWh
South Island ActualNorth Island Actual
South Island post-market meanNational post-market mean
0
100
200
CY26CY27CY28CY29
$/MWh
30/06/202531/03/202630/04/2026
0
100
200
CY26CY27CY28CY29
$/MWh
30/06/202531/03/202630/04/2026

Wholesale electricity pricing
Otahuhu
Contact Energy / Monthly Operating Report
4
Benmore
Distribution of wholesale market price by trading periods
Wholesale market
0%
20%
40%
60%
80%
100%
<$35$36-$60$61-$85$86-$110$111-$135$136-$160>$160
% of trading
periods
Apr-26Apr-25Mar-26
0%
20%
40%
60%
80%
100%
<$35$36-$60$61-$85$86-$110$111-$135$136-$160>$160
% of trading
periods
Apr-26Apr-25Mar-26
0
50
100
150
200
250
300
350
400
450
500
JulAugSeptOctNovDecJanFebMarAprMayJun
$/MWh
FY25 BENFY26 BENFY25 OTAFY26 OTA

5
Total national demand
Regional demand change (%) on April 2025
»New Zealand electricity demand wasup 3.6% on April 2025. When compared to April
2024, demand was up 0.2%.
Source: Contact and Electricity Authority grid demand (reconciled) http://www.emi.ea.govt.nz
FY24, 25and 26 respectively
Regional demand is excluding NZAS
The nationwide
average temperature
for April2026 was
14.0ºC, 0.6ºC above
the 1991-2020 April
average.
Electricity demand
Contact Energy / Monthly Operating Report
-
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
JulAugSepOctNovDecJanFebMarAprMayJun
GWh
NZASSouth Island (exc. NZAS)North Island
2%
19%
4%
6%
3%
(5%)
1%
2%
3%
12%
7%
1%
5%
3%
3%
7%
(0%)
11%
2%

Wholesale
Contact Energy / Monthly Operating Report
6
Retail
Generation mix, gross sales position and unit generation cost (FY25 and 26
respectively)
Retail sales volumes and netback (FY25 and 26 respectively)
Business performance
-
20
40
60
80
100
120
140
160
180
0
100
200
300
400
500
600
700
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
1,100
1,200
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
$/MWh
GWh
GeothermalHydroThermal
BatteryAcquired generation otherAcquired gen volume via PPA
Contracted electricity salesUnit generation cost (RHS)

Contact Energy / Monthly Operating Report
7
1
FY25 unit generation cost is shown including monthly unwinds of the AGS onerous contract provision. It excludes the $98m provision release which was recognized in June 2025.
7
Operational data
Ten months endingTen months endingThe month ended The month ended The month ended
Measure
April 25April 26March 26April 25April 26
2,802 2,794 254 247 260
GWhMass market electricity salesRetail
471 882 105 37 112
GWhRetail gas sales
3,273 3,676 359 284 372
GWhMass market electricity and gas sales
309.74 348.93 381.65 345.39 375.34
$/MWhAverage electricity sales price
(138.08)(160.96)(165.56)(172.09)(180.45)
$/MWhElectricity direct pass thru costs
(18.36)(17.40)(19.36)(21.68)(17.80)
$/MWhCost to serve
145.03 154.81 172.45 148.59 153.24
$/MWhCustomer netback
(148.13)(155.19)(148.51)(167.46)(161.53)
$/MWhEnergy cost
6%6%7%5%5%
%Actual electricity line losses
1.7 3.2 0.4 0.1 0.4
PJRetail gas sales
443,000 452,500 457,500 443,000 460,000
#Electricity ICPs
73,000 74,500 77,000 73,000 78,000
#Gas ICPs
115,000 135,000 141,000 121,000 144,000
#Telco connections
2,984 2,970 273 260 275
GWhElectricity sales to Customer businessWholesale
1,303 1,798 194 132 199
GWhElectricity sales to Commercial and Industrial
3,018 4,602 436 263 424
GWhElectricity CFD sales
7,306 9,371 903 655 898
GWhContracted electricity sales
186 201 22 17 22
GWhSteam sales
146.46 136.69 130.99 146.59 148.95
$/MWhTotal electricity and steam net revenue
129.42 144.98 145.86 147.02 187.24
$/MWhC&I netback (at the ICP)
4%4%4%4%3%
%C&I line losses
-4 --4
GWhBattery output
861 214 17 63 7
GWhThermal generation
3,690 4,040 387 383 423
GWhGeothermal generation
2,744 4,028 338 251 418
GWhHydro generation
7,295 8,286 743 696 852
GWhSpot electricity sales
408 578 129 25 41
GWhAcquired generation other
-698 53 -69
GWhAcquired gen volume via PPA
7,702 9,563 925 722 962
GWhElectricity generated (or acquired)
(54.98)(46.59)(56.24)(49.48)(44.95)
$/MWhUnit generation cost (including acquired generation)
1
(4,287)(4,772)(467)(392)(477)
GWhSpot electricity purchases
(3,018)(4,602)(436)(263)(424)
GWhCFD sale settlements
(7,306)(9,375)(903)(655)(901)
GWhSpot exposed purchases / CFD settlement
206.13 85.57 149.63 320.36 100.33
$/MWhSpot revenue and settlement on acquired generation (GWAP)
(215.26)(86.05)(155.43)(333.48)(103.33)
$/MWhSpot purchases and settlement on CFDs sold (LWAP)
104%101%104%104%103%
%LWAP/GWAP
7.3 1.9 0.2 0.6 0.1
PJGas used in internal generation
0.6 0.2 0.1 0.1 (0.3)
PJGas storage net movement (extraction) / injection
635,000 669,000 684,000 641,000 691,000
#Total customer connectionsContact
(16.42)2.84 2.31 0.64 (0.74)
$mRealised gains / (losses) on market derivatives not in a hedge relationship

8
Q3 FY25Q3 FY26
UnitMeasureMaterial theme
27167kt CO
2
-eGreenhouse Gas (GHG)Emissions from generation assets
1
Climate Change
0.1360.032
kt CO
2
-e /
GWh
GHG intensity of generation
2
0.590.41
Million cubic
metres
Freshwater take
3
Water
2,2764,931
Million cubic
metres
Non-consumptive water usage
4
2.83.9
Million cubic
metres
Geothermal fluid discharge to awa (rivers)
2,430
352
#Native rākau(trees) planted by Contact
5
Biodiversity
982
1,621
#Pests caught
6
29
69
#Community initiatives and organisations supported
Community
43% / 57%29% / 71%
% Women/ %
Men
Board
Inclusion and
Diversity
11% / 89%25% / 75%
% Women/ %
Men
Key Management Personnel
Inclusion and
Diversity
46% / 52%42% / 57%
% Women/ %
Men
Employee Gender balance
7
Inclusion and
Diversity
1
Scope 1 –Stationary combustion.
2
Carbon equivalent from stationary combustion / electricity generated and sold via the spot wholesale market
3
Freshwater taken to support operations at geothermal and thermal i.e., drinking water, fire water, water for cooling towers.
4
Water that flows through our hydro schemes and cooling water taken for Wairākeigeothermal power station. Data is not yet available for a small number of the hydro schemes acquired in purchase of Manawa Energy on a basis consistentwith Contact’s
reporting and has not been included.
5
Does not include DrylandCarbon/Forest Partners activities.
6
Predominantly rabbits, hares, rats and possums. Includes pests caught at King Country Energy sites. Pest data at other Manawa Energy sites is not yet available on a basis consistent with Contact’s reporting and has not been included.
7
Includes all permanent, fixed term and casual employees1.4% and 1.4% unspecified in Q3 FY26 and Q3 FY25respectively.
Contact Energy / Monthly Operating Report
Environment, Social and Governance (ESG)
Note: This information is updated quarterly (October, January, April, July)

9
investor.centre@contactenergy.co.nz
contact.co.nz/aboutus/investor-centre
Investors
Shelley Hollingsworth
Head of Strategy and Investor Relations
contact.co.nz
Instagram.com/Contact_Energy
Linkedin.com/company/contact-energy-ltd
Facebook.com/ContactEnergy
Youtube.com/ContactEnergy
To find out more about Contact Energy
+64 27 227 2429
Contact Energy / Monthly Operating Report
Keep in touch