- This topic has 0 replies, 1 voice, and was last updated 1 week ago by
.
-
Posts
-
All,
Take a look at this:
A massive electrical transformer being transported by specialized heavy-duty rail equipment in Japan.
The image comes from a remarkable video showing one of these transformers being moved by rail. If you use X, you can watch the original video here.
Even if you never watch the video, the photograph tells most of the story.
What you are looking at is the transportation of an enormous electrical power transformer in Japan using specialized heavy-duty railroad equipment.
It is impressive simply as an engineering operation.
But while looking at it, something else occurred to me: this is also a pretty good illustration of one of the biggest problems we would face following a truly catastrophic electrical-grid event.
Large power transformers are not something the utility company keeps stacked on shelves at the local warehouse.
According to the U.S. Department of Energy, large power transformers can weigh roughly 100 to 400 tons, can cost millions of dollars and are frequently custom-designed for the particular electrical system where they will be installed.
Look at that photograph again and consider what is required simply to move ONE of them.
- Special railroad equipment
- Route planning
- Specialized trucks
- Heavy cranes
- Experienced crews
- A suitable rail and road route all the way to the substation
And then the transformer still has to be installed, connected, tested and placed in service.
Now consider what happens if a major event damages large transformers across a wide geographic area.
EMP and a Carrington Event Are Not Quite the Same Thing
There are two different threats that are sometimes lumped together.
A high-altitude nuclear electromagnetic pulse — HEMP — can affect electronics, communications, protection systems and the electrical grid.
A Carrington Event-class solar storm produces a geomagnetic disturbance, or GMD. Long transmission lines can collect geomagnetically induced currents that flow through the grid and place unusual stresses on large transformers.
The exact consequences of either event depend on an enormous number of variables. Contrary to some popular claims, it is NOT scientifically established that every large transformer in America would simply burn up.
That isn’t necessary for the consequences to be disastrous.
A sufficiently severe event could produce cascading outages and could permanently damage some critical equipment over a very large area.
And that brings us back to the train.
You Can’t Replace These Things at Home Depot
The Department of Energy has been warning about the large-transformer problem for years.
Large power transformers are enormous, expensive and often not readily interchangeable.
Manufacturing them requires specialized electrical steel, huge quantities of copper, specialized factories and highly skilled labor.
Transportation is another problem entirely.
DOE reports that moving a transformer can require specialized railcars, specially planned highway routes and considerable advance engineering. In some circumstances merely clearing an appropriate rail route can take months.
Perhaps the most sobering number is the current supply situation.
DOE reported in 2026 that lead times for large transformers were running approximately 80 to 210 weeks.
Think about that.
Under normal conditions — with functioning factories, electricity, ports, railroads, highways, communications and supply chains — obtaining one can already take somewhere between roughly a year and a half and four years.
Now imagine that dozens of utilities suddenly need replacements at the same time.
And imagine trying to manufacture and transport them while portions of the electrical grid itself are down.
That is where a grid catastrophe potentially becomes something much bigger than an ordinary blackout.
Electricity Is the Infrastructure Behind the Infrastructure
A prolonged electrical outage doesn’t just mean the lights don’t work.
Electricity supports:
- Water treatment and pumping
- Sewage systems
- Cellular networks
- Internet infrastructure
- Fuel terminals and gasoline stations
- Hospitals
- Refrigeration
- Banking and payment systems
- Food distribution
- Railroads and transportation
- Manufacturing
- Emergency communications
Most of these systems have backup power.
Very few are designed to operate independently for months.
That is the cascading problem.
And it is one reason amateur radio continues to have a legitimate emergency-communications role. We don’t need to believe every worst-case EMP story on the Internet to recognize that our modern communications infrastructure depends heavily on commercial electricity.
For amateur radio operators, the useful question isn’t:
“Would every transformer be destroyed?”
The better question is:
“How long could we communicate if the commercial grid wasn’t coming back tomorrow — or next week?”
That means thinking about batteries, generators, solar charging, fuel, antennas, repeaters, simplex capability and how we would communicate when the Internet and cellular networks weren’t available.
The Japanese transformer move is fascinating engineering.
It is also a remarkable visual reminder of just how difficult rebuilding a badly damaged electrical grid could become.
Sources and further reading:
U.S. Department of Energy — Large Power Transformer Resilience Report to Congress
U.S. Department of Energy — Transformer Resilience and Advanced Components
Department of Homeland Security — Electromagnetic Pulse / Geomagnetic Disturbance
73
Phillip Beall (W5EBC)
- You must be logged in to reply to this topic.