Prior to processing into garments or carpets, wool needs to be cleaned. It’s an energy intensive process but WoolWorks, New Zealand’s leading wool scourer, has long been a champion of environmentally sustainable practices.

The company has been working with EECA since 2016 to reduce their energy usage. As part of that journey, their latest project will see them replacing coal with electricity to power their Timaru site in a world-leading initiative.

EECA is investing $3.63 million through the Government Investment in Decarbonising Industry (GIDI) fund, to co-fund the switch from coal to electricity at the Washdyke site near Timaru.

It was one of 14 successful project applications to the first round of the GIDI Fund in 2020, with the government committing almost $23m in co-funding to help businesses transition away from fossil fuels.

“We were on a path to reduce our dependence on coal but it would probably have been closer to 2030 before we got there,” says WoolWorks Chief Executive Nigel Hales. “The funding has helped fast track the process and was the driving force behind the decision to move away from coal.”

“We're one of the world's best in terms of total usable energy per kilogram of wool and that started to drive our thinking in terms of how can we be better? We’re continually looking at ways to reduce the impact of our operations on the environment. We've already reduced our energy by over 20 percent and this investment shows how serious we are about playing our part to address climate change.”

WoolWorks washes wool so it can be processed into the next stage. They process it, blend it, and assemble it into 20 tonne lots for their export customers. The washing process is very similar to an automatic washing machine but on a much larger scale. The wool goes through three bowls of heated water at different temperatures. The scour lines are up to 100 metres long and 5 metres wide and contain 27 cubic metres of water, so there are significant energy costs to heat the water and run the machines.


The GIDI funding will be used to install an electrode boiler to produce steam and an industrial heat pump to generate hot water. The project is expected to reduce over 11,000 tonnes of carbon dioxide emissions every year, the equivalent of removing 3,021 cars off the road.

Mr Hales says the company has made significant gains in improving the efficiency of its world-class scour operations, leading the way globally for the total useful energy usage per kilogram of wool and reducing its carbon footprint.

Through this project we will provide the New Zealand wool sector with a unique low-carbon start to the global supply chain, which we believe will support increased demand for New Zealand wool.

WoolWorks Chief Executive Nigel Hales

"Rather than planting our way out of the climate change problem by purchasing pine trees to offset our greenhouse gas emissions, we are choosing to do the right thing by the environment and actually reducing our emissions."

“This was all about doing the right thing for the business, doing the right thing for the environment, and working with great partners such as EECA and Meridian Energy.”

Nigel Hales, Megan Woods, David Ferrier, James Shaw, Andrew Caseley at WoolWorks.
Nigel Hales, Megan Woods, James Shaw, Andrew Caseley at WoolWorks

EECA Chief Executive Andrew Caseley says EECA has worked with WoolWorks since 2016 and supported a number of initiatives aimed at eliminating coal at the Timaru site.

“The company’s well-crafted decarbonisation pathway through EECA’s Energy Transition Accelerator and their ‘energy efficiency first’ approach, has set WoolWorks up for success for the last stage of fuel switching in an economically sustainable manner.”

Mr Caseley says the company’s environmental programme has already resulted in savings of over 20% in energy usage in the South Island so far.

Woolworks will use Meridian’s Certified Renewable Energy product to purchase renewable energy certificates to verify that the amount of electricity it uses from the grid is matched on an annual basis with electricity produced from Meridian’s certified hydro stations and wind farms.

Meridian CEO Neal Barclay recognised the commitment that WoolWorks has made to decarbonisation and combating climate change.

“WoolWorks is showing real climate leadership at a critical time. Meridian is proud to partner with WoolWorks to help reduce their environmental impact and demonstrate their commitment to climate action to their international customers.”


Woolworks is the largest wool scourer by volume in the world and handles 76 per cent of all New Zealand wool. Every year, the company’s three sites in Napier, Hastings, and Timaru wash more than 100,000,000 kilograms of wool, ranging from superfine merino to crossbred. The company employs 150 people across a wide range of operational, technical, engineering, administrative and management roles.

About the GIDI Fund

The GIDI Fund was launched in 2020, and the original $69 million investment was allocated across 53 major industrial decarbonisation projects – all contracted for completion by April 2024. Over their lifetime, they are estimated to save 7.46 million tonnes of CO2, equivalent to taking 134,800 cars off the road.

In May 2022, New Zealand’s Emissions Reduction Plan set out the pathway for how New Zealand will meet its first emissions budgets (2022-2035) and achieve long-term climate targets.

To help meet this challenge, the Government announced expanded funding of around $650 million for the GIDI, coming from the Climate Emergency Response Fund (CERF).

The investment will be across four years, and will cover a broader number and type of projects:

  • A continued focus on process heat (similar to previous GIDI), including high impact decarbonisation projects of national significance.
  • Targeted investment at a regional level for projects that optimise low emission fuel use.
  • Funding for electricity transmission and distribution infrastructure upgrades to support fuel-switching, and the early adoption of high decarbonisation energy technologies.
  • Help for businesses to buy and install low emission, high efficiency electrical equipment used for industrial and commercial processes, including specifically electric motors and electric heat pumps.
  • Help for commercial buildings replacing fossil fuel use for space and water heating, to lower emissions and increase energy efficiency.

Find out more: About the Government Investment Decarbonisation(GIDI) Fund