Millions of smart meters will be deployed worldwide in the coming years. However, the design, implementation and maintenance of the smart meter system presents many challenges. Addressing this, the EU-funded Metercloud project is offering a novel solution – a cloud-based integration platform as a service (iPaaS) for the data management and operations of smart meters, smart cities and the IoT. The platform will enable utility companies to optimise smart grid operations, capitalise on dark data and become platform operators for smart city infrastructure.