Polar Structure is a Stockholm-based infrastructure investor and developer backing sustainable transport, green energy, digital infrastructure and deep technology across Sweden and Europe. The firm combines long-term infrastructure ownership with direct investments in climate and infrastructure-related companies, including seed and later-stage venture rounds. It is relevant for founders building in CleanTech, Climate, Energy, Infrastructure, Mobility, Transportation, IoT, Telecommunications, Real Estate, Construction and Materials where capital can support sustainable infrastructure development.