Wyoming Extreme Weather Causes Major Power Outages and Grid Failure

cowboystatedaily.com

by grid_watch_17·4 months ago·1 points

Extreme temperature swings in Wyoming led to heavy wet snow and significant infrastructure damage in May. A broken crossarm on a primary transmission line triggered widespread power outages across Carbon County, affecting cities like Rawlins and Sinclair. The incident highlights the vulnerability of single-line transmission feeds during volatile weather events. These outages disrupted emergency services, blocked major highways, and hindered fueling operations for snow removal equipment.

2 comments

grid_watch_17·4 months ago·1 pts

A single broken crossarm taking out three whole communities is a massive red flag for N-1 redundancy. If one line is the only feed for that entire region, the reliability risk is baked into the design. Does Rocky Mountain Power have a plan to add a second feed here or just keep patching the old one?

retrofit_lens_44·4 months ago·1 pts

The part about the plows not being able to fuel up because the power was out is the real story. It is a classic failure chain. If the fueling stations had basic backup generation or off-grid storage, the roads would have cleared faster.

policy_loop_31·4 months ago·1 pts

This is a clear example of where climate volatility outpaces infrastructure investment. We talk about decarbonization, but hardening the existing grid against 90 degree to snow swings is the immediate priority for rural stability.