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Title: Practical Experiences Witli A Telephone-Based Remote Monitoring And Interruption Notification Module
Author: Christopher B. Lettau
Source: American Gas Association 1988
Year Published: 1988
Abstract: For a number of years Washington Gas Light (WGL) has been offering Interruptible service to its largest customers. The concept is that, in exchange for a favorable rate, these customers are required to switch to an alternate fuel (predominately oil) during periods of peak demand. This service rate class has grown dramatically over the last few years and has become a very important part of our peak-shaving capability. Originally we used volume and pressure recording charts to monitor these customers and verify that they switched fuels when required. We notified each customer by means of a telephone call when they were to be interrupted. This system worked fine when the number of customers was small, but it became cumbersome, labor intensive, and only marginally reliable as the number of customers grew. As an alternative to this sytem, we began to look at a telephonebased system to monitor and notify our customers remotely. Three years ago, we made the decision to install such a system, and now have about 1,(X)0 customers on the system.

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