The world’s most advanced renewable energy network designed exclusively for multi-tenant buildings. The Renewable Energy Exchange X¹ (REX-X¹) is specifically designed to solve the supply of renewable energy to multi-tenant buildings worldwide. Multi-tenant building owners have been unable to provide a cost-effective, equitable and stable solution to their tenants. Concurrently, tenants have been unable to equitably divide up roof space to each install their own renewable energy solution. The REX X¹ is a single, on-site solution to provide sustainable electricity to all tenancies and common areas, generating superior margin to current market place rates and sustainable outcomes.