LogicaCMG will be involved in a six-month pilot programme with RWE npower to operate a central prepayment energy service.
The company's Instant Energy smart metering service is currently allowing prepayment customers involved in the trial to manage their energy usage on a pay-as-you-go, 24x7 basis.
The Instant Energy service facilitates real-time communication with customers' meters using SMS messaging.
It enables customers to top up their credit using the same technology as pay-as-you-go mobile phones, ensuring the consumer is fully aware of how much credit is on their meter.
Jane Franklin, commercial metering manager at RWE npower, said, "The success of this trial is key for us, given the importance of smart metering in the government's energy strategy."