Co-located Battery Energy Storage Systems (BESS) are transforming renewable PPA economics by converting intermittent generation into firmer, higher-value delivery profiles. By storing excess energy and discharging during peak demand, BESS addresses solar cannibalisation, reduces curtailment, and enables premium pricing. This session explores commercial and contracting strategies from fully bundled hybrid PPAs to partial flexibility arrangements and examines how market characteristics determine the storage premium across different geographies.