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Garland, Texas
Fourth Largest Municipal Utility
in Texas
70,000 customers

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Press Release


Challenge :: Un-Depreciated AMR (ERT) Assets
The City of Garland, Texas and Garland Power & Light serve 70,000 electric and water customers as Texas' fourth largest municipal utility. With a network of walk and drive-by AMR-based encoder receiver transmitter (ERT®) technology for electric and water already in place, Garland felt that it was crucial to adopt a solution that could leverage its existing AMR infrastructure during a transition to AMI. This would adequately extend the useful life of existing investments while creating a way to capture meaningful savings through advanced applications immediately rather than delay a move to smart grid technology for several more years. Garland also wanted to be able to readily justify the cost of adding advanced AMI applications to capture specific operational benefits related to improving the accuracy of meter reading, billing, water leak detection, tamper detection, and voltage conservation to ensure minimal financial impact to rates.

Solution :: Strategic Migration from AMR to TUNet AMI
By performing a detailed analysis of Garland's business drivers for AMI while considering the utility's need to adopt a phased approach to maximize the value of current investments, Garland was able to successfully justify a migratory approach
to AMI with the deployment of a hybrid IP and wireless RF TUNet network. Initially, Garland deployed TUNet-enabledsmart meters strategically among a meter population located in a new apartment complex with a mix of residential and polyphase meters as well as electric and water ERTs. It elected to take a migratory approach over several years to reach full deployment in order to maximize existing investments in non- depreciated electric and water ERT assets, thus avoiding the need to "rip and replace" a still-functioning AMR network. An RF-based wireless two-way TUNet canopy was deployed cost-effectively, allowing Garland the flexibility to replace ERT devices through attrition and as the business case justified. All TUNet devices are equipped with onboard distributed computing capability as well as the ability to read and transmit ERT readings, providing powerful application-support capability across the network.

Results :: Clear Path to Smart Grid with Measurable Increases in ROI
With a clear migration path to full two-way AMI, Garland is able to capture the full value of un-depreciated ERT assets while moving to a smart-grid ready platform. With TUNet delivering interval readings at 99+% reliability, Garland has continued to build on the operational benefits and savings they began to realize on the first day of deployment. The utility has also been able to use AMI to isolate and phase out instances underperforming electromechanical meters, some of which were later determined to be operating as low as 85% efficiency, translating to significant and previously unrecognized lost revenue over years – in some cases, over decades. By leveraging Tantalus' unique migration approach, Garland has been able to take the next step in its Smart Grid strategy, and is now equipped with a future-ready platform to leverage advanced applications. It anticipates compounding returns from its technology investments, which will continue to work to reduce capital and operational expenses while providing measurable value across all utility departments, and ultimately to its customers.



- Garland, Texas
- 70,000 customers
- 57 square mile service territory
- 1,000 miles of line
- Initial focus on key mixed-use commercial and residential development
- Focus on strategic remote disconnect to apartment complexes

- Cost-effective option to
leverage one-way AMR
for two-way AMI
- Automates and
increases frequency of
ERT reading collection
(daily, interval reads)
- Seamless real-time
integration to billing and
other software (MV-RS®,
- Multi-commodity AMI
support (electric, water,
- TRUPush™ notifications for tamper and outage events are field-initiated
- Provides increased accuracy to mitigate system problems like water leaks and outages
- Strategically deployable to specific service areas or by specific business drivers
- Measurable operational benefits such as reduced truck rolls, quicker bill resolution, quicker move in/move out
- Low system maintenance costs
- On-board distributed computing for multi-application support on a single network platform
- Highly intelligent and self-managing network platform
- Rapid and predictable savings























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