Tag Archives: GHG

New initiative to track GHG emissions in materials supply chain

Rocky Mountain Institute, MIT Sustainable Supply Chains, the Columbia Center on Sustainable Investment, and the Payne Institute for Public Policy at the Colorado School of Mines have announced the Coalition on Materials Emissions Transparency (COMET).

This effort aims to build a standard method for measuring greenhouse gas (GHG) emissions in materials, “an important step in decarbonising mineral and industrial supply chains”, the partners said.

The COMET method will provide insight into the carbon content of consumer products like cars, buildings, and phones, and will help both corporations and consumers purchase materials and products with fewer embedded CO2 emissions, according to the partners.

Paolo Natali, Director of the Materials Initiative at Rocky Mountain Institute, said: “We all know that you can’t manage what you can’t measure. Until people know the climate impact of the products they’re using, it will be impossible for them to demand lower-carbon goods, and it will be impossible to decarbonise the industrial sectors that are responsible for 40% of annual greenhouse gas emissions.”

While climate disclosure is increasing, it remains a challenge to compare greenhouse gas emissions across companies and supply chains, the partners said. “There is currently no consistency in data collection or reporting across methods, and no framework that spans the entire supply chain,” they said. “This means there is no universally accepted way to know the emissions intensity of products or materials.”

The COMET method will change that by making GHG disclosure comparable across the existing reporting mechanisms and helping to develop a clear picture of emissions from the production of key materials like steel, copper, and cement, it said.

Suzanne Greene, Program Manager for MIT Sustainable Supply Chains, said: “Our ultimate goal is transparency of climate impacts across the supply chain. An emissions calculation method for mineral and industrial supply chains is an important first step for consumers and investors to understand and drive the decarbonisation of the goods we use every day.”

COMET will initially focus on developing sector-specific guidance for metals and minerals.

Zenith Energy and Independence celebrate solar start up at Nova

Operations at Independence Group’s Nova nickel-copper-cobalt operation in the Fraser Range of Australia are now being powered by a mix of diesel and solar energy after the on-site hybrid solar PV-diesel facility started up.

Zenith Energy’s wholly owned subsidiary, Zenith Pacific, built the plant. The ASX-listed power company also owns and operates the facility, which, it said, is already exceeding performance targets for power output and energy efficiency.

The two signed a contract back in 2018, amending an existing power purchase agreement.

Within the 26.6 MW facility is 5.5 MW of state-of-the-art photovoltaic (PV) modules, single axis tracking, inverters and communications and control system technology, according to Zenith Energy’s Managing Director, Hamish Moffat. The system also features high-efficiency diesel-fuelled generators that combine with this control system to optimise solar and diesel power delivery.

Moffat said: “The proprietary hybrid system developed by the company is able to seamlessly manage the fluctuations in solar PV energy production to provide smooth, reliable power, without the need for batteries to stabilise energy delivery to Nova.”

He explained that batteries have their place in energy systems but are still expensive to deploy for these applications.

“Our unique, locally developed hybrid system eliminates the need for batteries and represents a major step forward in the capital cost optimisation, operating efficiency and environmental performance of solar PV hybrid energy systems in remote locations,” he added.

According to Moffat, the system is saving Nova in the order of 6,500 litres of diesel a day, and it is the first hybrid solar PV-diesel installation to have been funded on a commercial, standalone basis – without any government subsidies.

IGO’s Chief Operating Officer, Matt Dusci, said: “At IGO we are striving to reduce our carbon footprint. The implementation of new technologies with the construction of a hybrid‐solar system at Nova will enable IGO to reduce our CO2-equivalent emissions by approximately 6,500 t per annum. The solar facility will also decrease our cost structure through reductions in our diesel fuel usage.”

As part of an agreement between the two companies, Zenith will supply power from the solar PV‐diesel hybrid system for an initial six‐year period, with an option for Independence to extend for a further two years.

Nova is expected to produce 6,750-7,500 t of nickel concentrate in the year ending June 30, 2020, alongside 2,750-3,125 t of copper concentrate and 213-238 t of cobalt concentrate, according to the miner’s September quarter results.