2021 Investor Day Presentation
Changes to the power system by 2030
A large volume of new renewable energy (RE) generation is
needed: 12TWh, 3GW, and $7B of new grid generation
A secure power system can be achieved multiple ways:
retaining thermal generation, 99% RE possible
with Onslow, system overbuild, or large-scale demand
flexibility, 100% RE possible
All solutions rely on other power system components also
flexing: dispatchable demand, renewable spill, batteries, ...
The pace of change and sheer scale of this challenge is
enormous, regardless of the dry-year flexibility solution
Wide-reaching changes are expected: storage, prices, and
generation all alter dramatically from today's expectations
Any of these solutions can do the job: a secure power system
with low carbon emissions and a high level of RE
annual generation [TWh]
50
45
40
35
30
25
20
15
ā
10
5
NZ Power System 2030 Generation Summary
Southland Stimulation & System Flexibility: all weeks, all hydrologies
100%
98%
95%
93%
90%
88%
85%
BAU:
FY2022-24
750MW
610MW
Full H2 Flex Dry-Year
Tiwai
400MW 1,000MW 750MW
Gas
Onslow
Coal
Turbines
Reserve
Overbuild Overbuild +
Big PKI
Hydro
Solar
Dispatchable Demand
Wind
Auxiliary
Dem Response
Geothermal
Thermal
---% Renewable
% renewable energy
Source: Meridian
Costs, cost allocation, and implications for market are
more challenging for some solutions
Meridian.
11 MAY 2021
2021 INVESTOR DAY PRESENTATION
| 27View entire presentation