The lines across your back field
are not all the same line.

Distribution is not transmission

The wooden poles along your road, carrying power to houses and barns, are distribution. They are typically under 35kV and they are not relevant to a data center.

Transmission is the high-voltage backbone — steel lattice towers or large monopoles, carrying bulk power between substations. These are what matter:

• 138kV — works for smaller loads, edge and colocation scale
• 230kV — serious. Supports substantial load.
• 345kV — the voltage associated with hyperscale campuses

The required voltage rises with the load. A 1 MW edge facility and a 300 MW AI campus are not looking for the same infrastructure.

How to find out what you have

1. Look at the structures. Steel lattice towers or tall monopoles with multiple insulator strings per phase indicate transmission. Wooden poles with a single crossarm do not.
2. Count insulators. Longer insulator strings mean higher voltage. This is rough but directionally useful.
3. Check public transmission mapping. The US Energy Information Administration and the Homeland Infrastructure Foundation-Level Data programme publish transmission line layers that show voltage. Your state utility commission may publish more.
4. Call your utility. They will tell you what line crosses your area and at what voltage. They will not tell you whether there is capacity for a new 200 MW load without a formal study.

The substation matters more than the line

A transmission line passing over your land is not a tap you can connect to. Power comes off the grid at substations, and interconnecting a large new load means either an existing substation with capacity or building a new one.

So the more useful questions are:

• Where is the nearest substation, and what voltage does it serve?
• Does it have capacity headroom?
• Does the serving utility have reserve margin at all?

A parcel two miles from a 230kV substation with headroom beats a parcel with a 345kV line directly overhead and no interconnection point for twenty miles.

The easement question

If transmission crosses your land, there is an easement, and it has terms. Worth knowing before any negotiation:

• How wide is the right of way, and how much of your acreage does it consume?
• What restrictions apply within it? Usually no structures, limited vegetation.
• Does it split your parcel into pieces too small to develop?

An easement bisecting a 120-acre parcel into two 55-acre halves has materially reduced what can be built, even though the acreage is unchanged.

Proximity is not availability

This is the point landowners most often miss, and the one most often exploited in a sales conversation. DataCenterScope states it directly: proximity to a transmission line alone does not establish a utility commitment, a delivery schedule, or sufficient capacity.

A 345kV line over your property is a genuinely good fact about your land. It is not, by itself, a reason to expect premium pricing. The four stages of powered →

Next

• How close is close enough →
• The interconnection queue →
• Who pays for the substation →

General technical description. Voltage classes and requirements vary by utility and region. Verify specifics with the serving utility.