“Goteborg Energi AB is a leader in adopting new technologies that improves energy delivery. We chose and successfully deployed Nuri’s AiMiR AMI/AMM solution for our entire city of 270,000 customers to help foster that leadership. We are very impressed by the performance we are getting as well as with the wide range of functionalities we now have implemented. AiMiR will become an important part of our Smart Grid implementation that is underway.

We are now planning to use the AiMIiR system and the ZigBee backbone to also handle our gas and district heating meter readings. AiMiR solution helps us implement value added services such as fire alarm service, street light control etc. There are so many possibilities with our new system, that we even started a new business unit that is now responsible for creating new “ZigBee” services to our customers”

Tomas Arnewid, Project Manager | Goteborg Energi AB | Goteborg, Sweden

Company
Goteborg Energi is the municipal electric utility in Goteborg, the second largest city in Sweden with a population of half a million. As Western Sweden’s leading energy company, its activities span distribution and sales of electricity, district heating, cooling, gas, optical fibre broadband networks and energy services. With 300,000 electricity distribution customers, Goteborg Energi ranks as the fourth largest DSO in Sweden.

Goteborg Energi owns the 8,000 km electricity distribution network most of which is buried underground, and protected from wind and weather. The distribution operation involves connecting customers to the electricity network and distributing electricity to households, offices and industries.

Situation
In 2007 Sweden passed a national law that required electricity distributors to bill customers to an actual read on a monthly basis. As a result of the new law, 5.5 million meters had to be replaced across the country.

Goteborg Energi AB faced a major challenge in identifying and replacing an existing metering system with the best possible advanced metering infrastructure (AMI) system available from a supplier. The supplier had to have a proven track record and had to be trusted to deliver by 2009. In addition, a significant financial investment to transition to a more streamlined and modern electric metering system was required. But more importantly, a corollary challenge was how to sustain on-going costs and try to retrieve the initial investment.

“To comply with the law, we had two choices. Either to go as low cost as possible and limit our capital expenses to a minimum. Or get extra revenue from services we didn’t have before to offset investment and operational costs. The decision from our steering group was very clear – get the best possible system and setup a new business unit to try to create new services. That decision then became the foundation for the project.”
– Tomas Arnewid, AMI project manager, Goteborg Energi

Goteborg Energi set high expectations for its new smart metering system. They envisioned saving millions of euros by eliminating manual meter reads and being able to bill the actual usage to its customers. Besides collecting hourly meter values, the system would be capable of monitoring the quality of supply, detecting energy theft and power outages, and analyzing energy consumption for individual customers or areas. The utility also believed that there is a large potential market for external services using its new network infrastructure. As an environmentally-conscious public utility, the new AMI network infrastructure will also help it deliver sustainable energy services while reducing the impact of its operations on the environment.

CHALLENGE
Goteborg Energi AB serving 300,000 customers of Sweden’s second largest city faced a major challenge when in 2007, the Swedish government created a new law demanding utilities to bill customers to an actual read on a monthly basis by July 2009. They had to replace existing meters with a new system using smart meters with remote meter reading capability. The challenge was to find a streamlined and modern electric metering system from a supplier with a proven track record and get the new system installed and operational by the target date set by the Swedish government.

SOLUTION
The answer to Goteborg Energi’s problem was to select and implement Nuri Telecom’s end-to-end AiMiR AMI system. The Nuri AiMiR meter reading unit is based on Zigbee technology to create a wireless mesh network for remote metering. The Nuri-Zigbee network easily and cost-effectively can be expanded as new homes are built or new services added.

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