Brussels, 22 September 2026 – The Solar Stewardship Initiative (SSI) and the Global Battery Alliance (GBA) have taken a decisive step towards jointly reinforcing responsible solar and storage supply chains.
The two multi-stakeholder initiatives have signed a Memorandum of Understanding (MoU). The agreement establishes a framework for collaboration on supply chain traceability, sustainability assurance, stakeholder engagement and capacity building, while also supporting greater alignment and knowledge exchange across the renewable energy value chain.
Through the collaboration, SSI and GBA will work together on shared guidance and learning resources, joint stakeholder engagement activities including webinars and workshops, exchanges between relevant working groups and forums, and exploration of pilot initiatives focused on responsible sourcing, traceability and sustainability reporting.
Rachel Owens, CEO of the Solar Stewardship Initiative, said:
“The energy transition increasingly depends on interconnected solar and energy storage value chains. By partnering with the Global Battery Alliance, we are creating opportunities to share expertise, strengthen trust in responsible sourcing approaches, and support greater transparency across critical renewable energy technologies. We are excited to work together to help accelerate a just and sustainable energy transition.”
Inga Petersen, Executive Director, Global Battery Alliance, said:
“The transition to clean energy is bringing solar and battery storage value chains ever closer together, and we have an opportunity to ensure that sustainability approaches evolve in the same way. The GBA brings practical experience in developing globally interoperable approaches to traceability, sustainability reporting and assurance through the Battery Passport. By working with SSI, we can build on each other’s work, reduce duplication for companies operating across interconnected value chains, and strengthen credible sustainability performance across the clean energy transition.”
As a next step, SSI, GBA and the Global Solar Council (GSC) will host a joint webinar on 21 October 2026, ‘From Regulation to Readiness: Battery Passports for Solar and Energy Storage.’ The session will explore the latest developments in the Battery Passport, as well as solar PV supply chain assessments. Register here.