Rent the infrastructure.
Keep the workload.
You may not need to make another large hardware commitment. Organisations running IBM Power can reach a point where the existing platform no longer fits the requirement - support changes, workloads move, applications are migrated, capacity requirements fluctuate or the long-term destination simply isn't clear yet.
Dynamic Power Subscription provides another option.
Keep access to a highly capable IBM Power platform while aligning the commercial commitment more closely with the capacity you expect to use.