Generation Transmission & Distribution Quiz no 1

What is not one of the main electricity generation methods used in NZ

• Hydro

• Thermal

• Tidal

• Wind

The amount of electricity generated from a renewable resource was higher in 1975 than in 2022

• True

• False

Answer explanation

90.6% in 1975 vs 87.1% in 2022

The fastest growing form of electrical generation in NZ currently is Wind

• True

• False

Answer explanation

Solar is the fastest growing electrical generation type. Between 2019 and 2022 Wind grew 12.9% and Solar grew 29.3%.

Geothermal generation supplies 33% of all of NZ's North island electricity requirements.

• True

• False

The High Voltage DC link between the North and South Island can transfer up to 1200MW of power from the South to the North Island

• True

• False

How many conventional Hydro stations supplying renewable electricity does NZ have?

• >20 <50

• >50 < 80

• >80 <100

• >100

New Zealand has relatively small-capacity reservoirs for Hydro dams.  With limited snow cover and low rainfall, how many days storage does NZ typically have available?

• 60

• 90

• 120

• 180

The electricity supplier must maintain the frequency of electricity supplied within how many   percent of 50Hz? (except for momentary fluctuations)

• 0.5%

• 1%

• 1.5%

• 2.5%

What is the largest hydro electric power station on the Waikato river?

• Arapuni

• Karapiro

• Whakamaru

• Maraetai

Answer explanation

Maraetai @ 360MW

Electricity generation is responsible for approximately how much percent of New Zealand’s   greenhouse gas emissions?

• 5.1%

• 7.5%

• 3%

• 11.2%