Industry | Electrification NZ

Process-heat fuel demand and emissions

EECAData updated to 2021–2023 observations

is energy used to heat, dry, evaporate or transform materials; these figures cover 713 mapped sites rather than every industrial load.

Share of mapped heat demand or emissions

Mapped sites

713

Large fossil-fuelled heat equipment

Mapped annual demand

28,141 GWh

About 70% of estimated business process heat

Analysis

Measured difference

Gas is 52.9% of heat demand but 72.0% of mapped emissions

Fuel demand and emissions are different measures and are shown as separate 100% bars.

Electrification options

Temperature and site constraints determine the practical technology

Electric boilers and heat pumps can replace some fossil heat, but suitability depends on temperature, operating pattern, network capacity and site economics.

Data table

Process-heat fuel demand and emissions data
Period or category	Fossil gas	Coal	Other fuels
Heat demand	52.9%	12.4%	34.7%
Emissions	72.0%	24.1%	3.9%

Source

Regional Heat Demand Database insightsSource updated 12 August 2024 by EECA

Mapped process-heat demand and emissions across 713 sites.

The database focuses on sites with fossil-fuelled primary heat equipment above 500 kW. Underlying site observations span multiple survey years, mainly 2021-2023.

Open official source Download Process heat CSV Dataset details

Regional process-heat concentrations

EECAData updated to 2021–2023 observations

Three features of the mapped site data.

Largest mapped regional heat demand

Waikato

8,528 GWh per year, driven mainly by wood products and gas.

Most mapped sites

Auckland

191 sites, concentrated in food and beverage and public-sector buildings.

High-demand outlier

Taranaki

7,104 GWh per year, mostly associated with the oil and gas industry.