Batteries are a fundamental driver of the green energy revolution. It is estimated that our society’s energy needs represent over 70% of all carbon emissions, with the largest shares coming from electricity and heat sources and transportation systems. The push to achieve net-zero is evident from numerous governmental initiatives such as the EU's commitment to cut carbon emissions by more than half by 2030, and global pacts such as the recent COP28 deliberations. To reach these goals means to effectively decarbonise the energy sector, and batteries will support the rollout of renewable energy infrastructure by providing energy storage capacity and reduce transport-related emissions by powering electric vehicles.
Batteries in energy markets are currently dominated by lithium-ion technology, but their employment in electric vehicles is given priority due to this technology’s unrivalled properties for this end use. This opens space for different technologies in other applications. Energy storage is a notable example, with battery energy storage capacity expected to grow twentyfold by 2030. All viable battery technologies will be needed to fulfil this soaring demand, and research & innovation to improve consolidated technologies is identified as an important way forward.
Lead batteries are currently the only other technology with well-established manufacturing and recycling infrastructure across the globe. But even if today's advanced lead batteries have come a long way from classic lead-acid car batteries in terms of overall performance, there are still various pathways for further improvements being discovered and explored.
The Consortium for Battery Innovation (CBI) is the only global lead battery pre-competitive research organisation. Our goals are to help deliver the advanced lead batteries needed for the energy transition and to demonstrate their power to bring real change. We do so by assessing market needs to define concrete research goals, by providing financial support to breakthrough projects through our Technical Program, and by establishing partnerships to develop pioneering advanced lead battery-based solutions.
In this overview, we discuss how some of our projects are paving the way to unlock the full potential of advanced lead batteries for the green energy transition.
The indispensable low-voltage ally
Electric vehicles are key for a decarbonised transport. As the nonstop evolution in automotive technology requires more and more from the main lithium-ion battery, smaller auxiliary batteries, also called low-voltage EV batteries, have been increasingly employed for safety back-up and supply power to specific electronic features. This means advanced lead batteries can work alongside lithium-ion batteries to ensure our future decarbonised road transport fleet is also safe.
CBI’s Technical Program has been supporting projects focused on automotive lead battery optimisation for start-stop, microhybrid and auxiliary use. Some encouraging results include improvements in the methodology of laboratory cell testing to investigate key parameters for automotive applications, and valuable insights on the role of additive formulations to enhance automotive battery performance. Ongoing studies, such as the investigation on microscopic changes in positive and negative electrodes during different charge conditions, along with future projects, will continue to provide guidance for better active material formulation and performance metrics.
Taking energy storage capability to the next level
The shift to renewable energy is just getting started, and more extensive rollout will be closely followed by a sharp increase in the need for energy storage systems to compensate for the intermittent nature of these energy sources. Global performance targets are aggressive and require different battery technologies with long lifetimes, high total energy throughput and low acquisition cost to meet technoeconomic needs. Our industry is focused on delivering longer lasting and more energy dense batteries to help meet the demand for utility, commercial, residential, and industrial energy storage applications.
Different projects supported by CBI’s Technical Program have been investigating advanced lead battery enhancements specifically for energy storage applications. Key findings so far include insights into barium sulphate additive configurations that can bring benefits to overall cycle life, and in-situ analyses during battery operation to understand charge and discharge processes and their products. More exciting results will come from projects and initiatives starting in 2024, including CBI’s involvement in the U.S. National Consortium for the Advancement of Long Duration Energy Storage Technologies. This will keep adding to our growing knowledge base and contributing to advanced lead battery performance improvement for energy storage.
Powering a just transition
The lack of access to both electricity and clean cooking, known as energy poverty, remains a pressing global issue. It is estimated that 775 million people lack access to electricity and 2.2 billion people lack access to clean cooking fuels, mostly in Sub-Saharan Africa and developing Asia. Providing universal clean energy access leaving no one behind is essential for a successful green energy transition. But the rollout of renewable energy in areas with no or incipient grid infrastructure is challenging, and lowering investment costs is a must. Through ongoing partnerships, we are demonstrating that the combination of microgrids and advanced lead battery storage is an excellent solution to provide clean and affordable energy for remote communities.
In an ongoing initiative funded by Horizon Europe, we are helping to develop a deployable clean energy solution with provision of electricity through prosumer-based solar microgrid coupled with an energy storage system made of advanced lead batteries. One core innovation in this battery energy storage system is the addition of an electrolyser to produce green hydrogen, which can be used as clean cooking fuel. By the end of the project in 2026, the team will deploy two full-scale pilots of this pioneering energy solution, one in Côte d'Ivoire and one in Zambia.
CBI is also contributing to another smart solution, this one already in testing phase: a solar energy microgrid with a combined micro electric tractor. Advanced lead batteries power both the microgrid energy storage system and the tractor. The project, funded by Innovate UK, aims to bring a 2-in-1 solution for rural communities by providing clean energy and optimising land preparation. Recent field demonstrations have shown the potential of the micro electric tractor to significantly increase crop yields, which will help to increase smallholder incomes. The solution has been selected as one of the finalists of a prestigious international green energy prize.
Novel solutions like these not only alleviate energy poverty issues but also provide a pathway toward citizen empowerment. They can substantially contribute to universal access to modern energy and to achieve other Sustainable Development Goals regarding poverty reduction, health and education.
This is why we believe the future is bright and green and we will continue to drive advanced lead battery innovation for sustainable development and a climate-resilient future.
The European Energy Transition
By Nicola Filizola
As the world copes with the urgent need to address climate change and reduce greenhouse gas emissions, Europe has been leading the charge in transitioning to a cleaner and more sustainable energy future. The European energy transition is a comprehensive shift from traditional fossil fuels to renewable energy sources, such as wind, solar, hydro, and geothermal power. Among the critical components enabling this transformation, lead batteries have emerged as a key technology that plays a pivotal role in the transition's success. In this article, we will explore the energy transition in Europe and delve into the essential role that batteries are playing in shaping the continent's greener and brighter future.
The Growth of Renewable Energy in Europe
The European Union (EU) has been at the forefront of advocating for clean energy and sustainability. Through initiatives like the European Green Deal and the Paris Agreement, EU member states are committed to reducing their carbon emissions, fostering innovation in clean technologies, and achieving climate neutrality by 2050.
One of the main challenges of integrating renewable energy sources into the existing energy infrastructure is their intermittency. Solar and wind power, for instance, depend on weather conditions and daylight availability. To ensure a stable and reliable energy supply, an efficient energy storage system is essential, and that's where batteries come into the picture.
The Challenge of Intermittency
Unlike conventional power plants that can provide a consistent energy output, solar and wind power are dependent on weather conditions and natural variations. Cloudy days and calm winds can lead to a drop in power generation, causing fluctuations in the grid. This intermittency poses challenges to grid stability, and the power supply must be balanced in real-time to meet demand. If renewable energy sources are to dominate the energy mix, an effective and efficient energy storage solution is imperative to address this variability.
Batteries: The Key to Storing Renewable Energy
Batteries are essential components of the energy transition as they serve as a bridge between renewable energy generation and consumption. These energy storage systems can store surplus electricity when generation exceeds demand and release it when demand surpasses generation. In essence, batteries help to smooth out the intermittent nature of renewables and provide a stable supply of electricity to the grid.
Batteries act as buffers, absorbing excess energy during periods of high generation and releasing it when generation dips. By doing so, they stabilize the grid and ensure a steady supply of electricity, reducing the risk of blackouts and power disturbances. Moreover, batteries can respond rapidly to fluctuations in demand, providing grid operators with a valuable tool to manage the grid effectively.
The energy transition in Europe is also characterized by a shift towards decentralization, with an increasing number of small-scale renewable energy installations, such as rooftop solar panels and community wind farms. Batteries play a vital role in this decentralized energy landscape by enabling consumers to store and manage their locally generated energy. This promotes energy autonomy, reducing the reliance on centralized power plants and enhancing energy security.
Batteries make it possible to integrate a higher share of renewables into the grid. By storing excess energy during periods of high generation, batteries ensure that the energy is not wasted and can be used during times of low generation. This feature is particularly crucial during seasonal variations when renewable output may vary significantly.
Batteries also play a significant role in electrifying transportation, another essential aspect of the energy transition. The growth of electric vehicles (EVs) is dependent on advanced battery technology, allowing for longer driving ranges and faster charging times. Widespread EV adoption not only reduces greenhouse gas emissions from the transportation sector but also opens up the possibility of using EV batteries for grid storage through vehicle-to-grid (V2G) technology.
In conclusion
The energy transition in Europe represents a monumental effort to combat climate change and create a sustainable energy future. The integration of renewable energy sources is a crucial step in this journey, but their intermittent nature presents challenges that must be addressed. Lead batteries, together with other technologies, emerge as the silent protagonists, providing a robust and reliable energy storage solution. From enhancing grid stability and enabling renewable integration to empowering decentralized energy systems and fostering electric vehicle adoption, lead batteries will play a multifaceted role in reshaping Europe's energy landscape. As technology advances and costs continue to decline, the potential of batteries will only grow, propelling Europe towards a cleaner, greener, and more resilient energy future.
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