Dominion’s 2016 integrated resource plan is on the docket at Virginia’s State Corporation Commission this week: The hearings would be a perfect time to explore the utility’s plan for addressing the massive changes sweeping across the electricity industry, but it’s not going to happen. Instead, Dominion will defend a document seemingly developed in a time warp, when there were no options other than central station, utility-generated power and the term distributed energy resources was still a twinkle in Amory Lovins’ eye.
Here’s all you really need to know: In the Richmond, Va.-based company’s 307-page IRP (which can be found here), the term distributed energy resources only shows up once, on page 112, when the company references the federal Department of Energy’s definition of a microgrid: “…a group of interconnected loads and distributed energy resources within clearly defined electrical boundaries that acts as a single controllable entity with respect to the grid…”
Now, to be fair to Dominion, the utility does talk about distributed generation, but generally in terms designed to underscore its potential risks while downplaying any possible benefits. Its discussion of future energy resources, for example, which begins on page 88, includes a number of standard beefs about renewable resources—they aren’t dispatchable, they are intermittent and they add uncertainty to system operations. The topper, though, appears on pages 95-96 when the company talks about distributed photovoltaics: “While the grid may not be adversely impacted by the small degree of variability resulting from a few distributed PV systems, larger levels of penetration across the network or high concentrations of PV in a small geographic area may make it difficult to maintain frequency and voltage within acceptable bands. On a multi-state level, it is possible that the resulting sudden power loss from disconnection of distributed PV generation could be sufficient to destabilize the system frequency of the entire Eastern Interconnection.” [Emphasis added]