Utility grid control room with operators and large wall displays

GIS in the Center: The Architecture Utilities Actually Operate On

I’ve written a precursory blog as a refresher for all of the utility acronyms. If you’re an operator or GIS practitioner, you already live in these terms—use this as a sanity check. If you’re an executive, project sponsor, or adjacent leader, this should give you enough context to follow the architecture conversation without getting lost in alphabet soup. Click here to read Grid Operations Glossary: GIS, OMS, ADMS, DERMS, and Friends Utilities often talk about “integrated systems,” but in practice most integrations already revolve around one platform: GIS. Not as a mapping tool—but as the operational system of record that defines how the grid actually exists. ...

April 25, 2026 · 6 min · 1275 words · Joe Marsh
Electrical utility substation at sunset

Grid Operations Glossary: GIS, OMS, ADMS, DERMS, and Friends

Before we talk about GIS in the center of utility architecture, it helps to make sure we’re speaking the same language. Most ADMS and grid modernization conversations are full of acronyms—GIS, OMS, ADMS, SCADA, DERMS, MDMS, EAM—that mean one thing to the vendor slideware, and something slightly different to the people who actually operate the grid. This post is a working glossary for the terms I use across ADMS Readiness. It’s written for executives, program leaders, and adjacent teams who need to understand the concepts without living in them all day. ...

April 20, 2026 · 5 min · 1032 words · Joe Marsh