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Residential Line Extension Estimator

Step 1: Site Info

Please answer the following questions regarding how electrical facilities may be extended to your property.

1. Select the state where you would like a ballpark estimate for new electric service.
Please select a state
2. What is the distance in feet from the nearest electrical facility to where your meter would be located?

Measure along a clear, accessible, path you suspect the power lines would be constructed. Enter a footage less than 2,640' (1/2 mile).

A number between 1 and 2639 is required
3. Choose one of the seven illustrations below that best reflects the existing electrical facilities at your site and how you think power might be extended to your home.

For new extensions, orange represents low-voltage lines that serve the home, while red indicates high-voltage lines that may be required due to distance or load. Dashed lines represent underground facilities.

Be sure to pick the illustration that best indicates whether the existing power lines, as well as the new extension to your home, are underground or overhead, or could be both.

Low Voltage (LV) Only (Power is near the home) ?

Short Overhead

Short Underground
Short Underground from Underground
Show Details Hide Details
Existing Facilities
Overhead HV
Overhead HV
Underground LV
New Line Extension
Overhead LV
Underground LV
Underground LV
Transformer
Existing or New
Existing or New
Existing or New

High Voltage (HV), New Transformer & Low Voltage (for longer extensions) ?

Long Overhead
Long Overhead & Underground (UG)
Long Underground
Long Underground from Underground
Show Details Hide Details
Existing Facilities
Overhead HV
Overhead HV
Overhead HV
Underground HV
New Line Extension
Overhead HV & LV
Overhead HV & UG LV
Underground HV & LV
Underground HV & LV
Transformer
Overhead - New
Overhead - New
Padmount - New
Padmount - New
3a. If high voltage lines need to be extended into your property, do you want them:

Calculator Legend

See the legend below for details on the diagram seen in this section.

  • red line HV(Aerial)
  • yellow line LV(Aerial)
  • red dashed line HV(Underground)
  • yellow dashed line LV(Underground)
  • gray line Existing HV
  • gray block Overhead Transformer
  • house Residence
  • square Existing Padmount Equipment
  • green square with T New Transformer
  • square with T Existing Transformer
Close

Calculator Legend

See the legend below for details on the diagram seen in this section.

  • red line HV(Aerial)
  • yellow line LV(Aerial)
  • red dashed line HV(Underground)
  • yellow dashed line LV(Underground)
  • gray line Existing HV
  • gray block Overhead Transformer
  • house Residence
  • square Existing Padmount Equipment
  • green square with T New Transformer
  • square with T Existing Transformer
4. Is the nearest electrical facility a transformer (either ground-level padmount or overhead on a pole)?
Close

Here are some clues to determine if the nearest electrical facility you are measuring from has a transformer or not.

a. Facilities with transformers:

Pole with transformer
Pole with transformer
Padmount transformer
Padmount transformer

b. These are NOT transformers:

Pole without transformer
Pole without transformer
Pole without transformer
Pole without transformer
Padmount switch cabinet
Padmount switch cabinet
Transformer diagram

To determine if padmount equipment is a transformer, consider the following:

  • Transformers are mostly square. Switches are more rectangular being more wide than deep.
  • Transformers may produce a slight humming sound.
  • Transformers may have stickers with sizes like: 25, 50, 75, 100, or 167.
  • Transformers have nameplates with clues like Kva size, High & Low voltages (look for 120/240), or the word "transformer".

Your ballpark estimate is $9,001

Short extensions from existing transformers are outside the scope of this calculator. Most customer advances of this type fall inside a range of $0 to $4,000.

Trenching and conduit costs are the responsibility of the applicant and are NOT INCLUDED in this ballpark estimate.

This is a ballpark estimate only based on typical situations for the information you have provided.

Specific site situations can have a significant impact on actual charges.

The Line Extension Estimator is not intended to determine a design, specify route or identify how facilities will be installed on your site. Actual design and advance payment determined after you meet on site with an estimator.

When is the right time to apply for new electrical service?

In most cases, you should meet ALL the requirements below before applying for service. If you have already started excavating the foundation of your home, you should apply promptly. Check the items below that apply to you, then click "Am I Ready?"

In most cases, the ballpark estimate is sufficient until the criteria above have been met.

You may be ready to apply for service, make payment and sign contracts. Click here to find out more.

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