Adult learning systems are being called upon to prepare workers for major labour market shifts, including the green transition and the rise of artificial intelligence (AI) in the workplace. While initial education is important, upskilling and reskilling the existing workforce is essential to help individuals and businesses adapt and prepare for these transitions. Policy makers face the challenge of ensuring training is both relevant and inclusive, yet there is limited understanding of whether current training supply is sufficient to meet current and future skill needs. Most research focuses on the demand for skills, with little insight into the supply. To fill this gap, this report uses evidence from new OECD questionnaires and an analysis of training catalogues to evaluate whether current training supply aligns with the skills needed for the green and AI transitions. It also provides insight into the accessibility and flexibility of training efforts, to guide policy makers in their efforts to develop more effective, inclusive training strategies.