Lighting the way: How young Colombian entrepreneurs transform lives with second-life batteries and solar power
February 6, 2025

Katanzama community members gathered next to a solar panel installation that now provides electricity to the local school, improving access to education and essential services. Photo credits: BATx
In Colombia, 3 percent of the population does not have access to electricity (as of 2021). That’s approximately 1,5 million people - mostly in rural and Indigenous communities - who live without access to electricity. This lack of energy not only leaves homes in darkness but also hinders education, healthcare, and economic opportunities, creating a significant barrier to progress in some of the country’s most vulnerable areas. At the same time, the rapid expansion of electric mobility presents a new environmental challenge: what to do with lithium-ion batteries once they are no longer fit for vehicles.
Seeing an opportunity to address these urgent issues, our project BATx, a Colombian startup led by young entrepreneurs, is turning environmental problems into solutions. Through a specialized lithium-ion battery diagnosis and reuse methodology, we breathe new life into discarded electric vehicle batteries, converting them into storage systems for renewable energy. These second-life batteries are designed to power solar energy systems, advancing the energy transition while reducing waste.
BATx aims to bring clean, reliable energy to Colombia’s most underserved communities. By piloting our second-life batteries in off-grid indigenous schools, we are demonstrating that innovative, sustainable energy technologies can empower people, transform lives, and power inclusive development for generations to come, ensuring that no one is left behind.
Being awarded funding by the Youth4Climate (Y4C) initiative was an exciting first step in turning our project into reality. After the 2023 Y4C flagship event in Rome, we quickly moved into action, planning and executing the project. With support from Y4C, we installed a 40 kWh energy system that now benefits over 400 people in an indigenous community, providing reliable energy to improve education, healthcare, and cultural activities and foster long-term sustainable development and resilience. Furthermore, the recognition from UNDP and the Italian government sparked significant interest in BATx, attracting support from various companies eager to collaborate on this initiative. We decided to partner with Fundación Socya, a consultancy firm specialised in environmental social responsibility (ESR) and project management. Socya provided insights on community-centered dialogue and impact delivery. Most importantly, it had an ongoing program in the Sierra Nevada de Santa Marta region, working with native communities on environmental and cultural preservation in partnership with the local NGO, Nikuma. This connection was key to understanding the local context and gaining the community’s trust. It also ensured our energy solution was aligned with their values, allowing us to effectively bring clean, reliable energy to one of Colombia’s most underserved communities.
Together, we developed a matrix to evaluate different candidate indigenous towns and determine the best location for the project. We based our decision on criteria such as the number of beneficiaries, availability of key infrastructure that would serve as installation points (education, health, etc.), proximity to roads (for logistics), and existing energy generation systems. The town of Katanzama, home to the Arhuaco indigenous people, was selected. It is a hub for both traditional and modern education, with a boarding school that allows children to avoid the 10-12 hour walk to attend classes. It is also an important cultural and religious site where acolytes of Mamu (spiritual leaders) come to learn. For several years, Socya and Nikuma have worked closely with the Katanzama community on environmental education and waste management programs, building the trust and cooperation necessary to propose the project.

The town of Katanzama, in the Sierra Nevada de Santa Marta region, home to Arhuaco indigenous people.
Jaison Pérez, the local contact, immediately supported the idea when it was presented. He indicated that the town had previously received a donation of solar generation equipment, but it was outdated and already malfunctioning. Moreover, the previous installers did not consult priorities with the community, which meant the system didn’t address the community's specific needs. As a result, the benefits of the donation were not fully realized, and the project couldn’t achieve its desired impact. With the help of solar generation experts from Maslight Solar, we drafted potential designs which were then refined through on-site visits. Initially, we planned to install a generation and storage system to power the school and its auxiliary facilities, including classrooms, student dormitories, the kitchen, dining area and food storage. However, during site visits and community dialogues, it became clear that we needed to expand the scope of our original plan. We found out that the town’s health outpost lacked access to electricity, leaving it unable to refrigerate medication, power medical equipment, or provide 24-hour patient care. The community also emphasized the importance of bringing solar energy to their communal gathering centre, a site of significant cultural value. These two sites, although not in our original plans, became essential to delivering a system that could truly enhance the town’s education, healthcare, and cultural practices.
With this expanded scope, we needed additional support beyond the seed funding from Youth4Climate. Lúmina, an electrical supply company, provided wiring and equipment, bringing us closer to our goal, though a funding gap remained. Finally, CELSIA, one of Colombia’s leading utilities and leader in renewables, stepped in to close the gap. Since we repurposed discarded EV batteries into renewable energy storage systems, we were able to reduce the cost of acquiring raw materials. These second-life batteries were transformed by BATx and used in the installations in Katanzama, providing clean power to underserved communities while promoting sustainable development. Due to this collective support, we expanded from a single system, into three installations delivering a total of 40 kWh of energy: 24 kWh in the school, 4 kWh in the health outpost, and 12 kWh in the communal centre. On top of the direct energy system benefits, the environmental impacts of the second life battery initiative were also significant:
Saved 2.2 MWh of energy consumption (this refers to the energy that would have been required to manufacture the equivalent amount of first-life batteries).
Harnessed 308 kg of what would have been hazardous waste.
Avoided 7 tons of CO₂ emissions.
Having successfully installed solar generation and second-life energy storage for the town’s health outpost, communal gathering, and school, Katanzama now has sustainable and autonomous energy for the education and health of its children. Due to community involvement and participation in the installation process, they received additional training in energy system monitoring and operation, to ensure the long-term functionality and success of this project.

Training the community in system monitoring and operation

School lit up with solar power thanks to the BATx installations
The support and funding from Youth4Climate not only made this project possible, but it also helped us leverage additional partners, bringing in expertise and resources to ensure its success. It’s not just about the technology, it’s about partnering with people who share the same commitment to making a real impact. Moreover, working with the Arhuaco community in Katanzama, we learned firsthand how important it is to work together and listen. We didn’t just focus on installing energy systems; we made sure the community was involved every step of the way, from planning to training. This allowed us to go beyond just providing energy, and instead, improve education, health, and local ownership of the project. It’s about long-term change, not just a quick fix.

BATx, Katanzama community, Socya, Nikuma and Maslight installation team.
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Youth4Climate (Y4C) is a global initiative, launched in May 2022, co-led by the Government of Italy and the United Nations Development Programme (UNDP). The initiative has its Secretariat at the UNDP Rome Centre for Climate Action and Energy Transition.
Y4C brings together existing and new online and offline resources, tools, capacities, partnerships, networks and movements led by and designed for youth, with a strong focus on the implementation of solutions, for a more sustained impact on climate on the ground. It aims to foster an inclusive, safe and enabling environment for youth to lead and partner with other stakeholders on climate action.
For more information about the initiative, visit the Youth4Climate platform.