“EnPot can have a positive impact on aluminium smelters’ carbon footprint; particularly those that have access to variable renewable electricity but struggle to take advantage of it because of its variability,” Karyna Young, CEO of EnPot

Karyna Young is associated with EnPot since inception in 2016 and now serving the company as Chief Executive Officer from early 2021. EnPot is an innovative new technology that fundamentally changes the way smelters use energy to produce aluminium.

Karyna started her career as a commercial lawyer and finance company director in both New Zealand and Australia. In addition to leading EnPot, she is the CEO of Yunca Group, a manufacturing and engineering business and supplier to the global aluminium industry.

We are extremely delighted to have her with us in our “European Aluminium Industry Focus 2022” e-Magazine, and here is an excerpt from her interview.

AlCircle: EnPot technology enables smelters to vary their energy usage to better match electricity price fluctuations. Could this help smelters in Europe to cope with the electricity price hikes?

Karyna Young: Absolutely. According to European Aluminium, electricity prices in Europe have quadrupled since last summer. Aluminium smelters are caught in the eye of a perfect storm of economic, regulatory, and geopolitical factors. It is clear the situation facing European aluminium producers has become untenable for many, with half of the region’s producers forced to curtail or stop production . The toll on output is currently in the area of around 1 million tonnes of primary aluminium production. Although EnPot cannot completely buffer aluminium smelters from sky high electricity costs, it does enable them to vary their energy use to match electricity generation fluctuations. In today’s market, this new found control could make the difference between making metal at a loss or a profit.   

AlCircle: Could you please brief us on how EnPot can reduce aluminium smelters’ carbon footprint and what role is it playing in helping the European Union achieve net zero emissions?

Karyna Young: EnPot can have a positive impact on aluminium smelters’ carbon footprint; particularly those that have access to variable renewable electricity but struggle to take advantage of it because of its variability. Heat balance control allows smelter power usage to be modulated upwards or downwards by up to 30%, without disturbing the delicate heat balance required to make aluminium. This is made possible by retrofitting pot shells with enhanced temperature regulation via insulated heat-exchange jackets. It’s a simple concept with significant impact. 

Power can be modulated around +/-20% immediately to work with power supply variability and up to 30% (with minor process changes) as a solution for longer term issues such as dry periods in hydro generation. In this way, smelters can increase the use of variable renewable energy (VRE) in their energy mix to reduce the carbon footprint of smelter operations and produce green, low-carbon aluminium. With some of the world’s largest buyers of aluminium committing to buying a minimum of 10% near-zero carbon metal by 2030, it is evident that demand for green aluminium is only going one way. 

By operating flexibly, aluminium producers also become a valuable tool for electricity grid operators grappling to support, or ‘firm’, a greater mix of intermittent renewable energy sources such as wind, solar, tidal and hydroelectric power. As the European Union moves towards its goal of net zero emissions, all eyes are on the rapid expansion of wind, solar and hydro generation and the necessary firming of these intermittent energy sources. Firming of VRE can be performed by several technologies such as battery storage, pumped and stored hydro or gas turbine peaking plants. A less well-known option is large industrial users operating like a 'virtual battery', capable of providing large volumes of energy back to the grid, as needed, with the flick of a switch.

EnPot enabled aluminium smelters show potential to be the most cost-effective method of firming up to 40% of smelter energy needs (by 20% up or down, on demand) and the capability to provide energy services similar to both grid-scale batteries – at 100% of capacity for a short duration - and pumped hydro, at lower capacity for longer duration.

AlCircle: Is your business affected by the current geo-political crisis? If yes, could you please brief us on that?

Karyna Young: As a technology company in the business of reducing aluminium smelters’ reliance on costly energy derived from fossil fuels, we are experiencing significantly increased interest in our product. This is in part due to the European energy crisis; however, we were already seeing smelters moving towards a more flexible operating model before these issues developed, as a result of the need to reduce carbon emissions in response to climate change. 

AlCircle: Do you think European smelters could avoid halting or cutting production if they had EnPot technology?

Karyna Young: EnPot can be very useful under the right economic circumstances – where smelters wish to reduce production at times of a very high cost, typically involving high intra-day variations from VRE generation. But it is also useful to reduce production and power consumption over a long period, when there is an expectation that profitability will return in future, such as dry periods in hydro generation. This new found operational flexibility can help smelters to retain valued staff until such a time that production can be dialled back up to full capacity again.  

AlCircle: Do you think the ongoing power crisis in Europe will lead more and more smelters adopting your energy system?

Karyna Young: Every smelter operates within their own unique set of circumstances. Some are lucky enough to run off hydro power, whereas others have been reliant on coal or expensive natural gas to operate, and are now facing a move towards variable renewable electricity sources. In both scenarios, EnPot technology can relieve pressure on aluminium smelter operators. In the hydro scenario, EnPot can enable smelters to dial down production during ‘dry years’, to provide more power back to the grid when needed. This capability can be supported and incentivised at the national and European level. For those smelters relying on energy from grids in the process of pivoting towards more renewable energy, adopting technology that enables them to operate a ‘virtual battery’, if they choose to do so, can be both financially and environmentally rewarding. 

AlCircle: How can EnPot support the European aluminium industry to overcome the power crisis? 

Karyna Young: EnPot can help assist the European aluminium industry by making smelters more compatible with future power sources, which are likely to be renewable and variable in nature, especially as the current energy crisis has shown the dangers of relying on gas and international power or fuel imports. As European nations build more VRE generation and become more self-sufficient to overcome the crisis, smelters could at the same time install EnPot to both benefit from cheaper VRE power prices and provide firming services to the grid. These services are likely to be valued and appropriately rewarded by grid operators and generators attracted to a low cost firming solution for variable generation from valuable, well-established existing assets.