How to Estimate an Electrical Panel Upgrade

An electrical panel upgrade generally involves replacing or modifying existing electrical distribution equipment to accommodate the electrical requirements of a property.

Depending on the project, the work may involve:

• Replacing the existing panel
• Increasing panel capacity
• Upgrading the service
• Replacing breakers
• Installing new feeders
• Modifying grounding and bonding
• Installing new disconnects
• Reworking existing circuits
• Adding equipment
• Coordinating with the utility

The exact scope depends on the existing installation and the requirements of the new system.

Before preparing an estimate, determine what currently exists.

Review information such as:

• Existing panel size
• Service rating
• Panel location
• Number of circuits
• Existing breakers
• Feeder size
• Service conductors
• Disconnect location
• Grounding system
• Available physical space

If possible, inspect the existing installation.

Photos and field measurements can be extremely useful when preparing an estimate.

Next, determine what the customer actually needs.

For example, the project might involve:

• A 100-amp panel being replaced with a 200-amp panel
• A larger commercial distribution panel
• Additional circuits
• New equipment
• A service upgrade
• Replacement of outdated equipment

Don't assume that simply installing a larger panel is the entire project.

The service and other components may also need to be upgraded.

Identify the equipment required for the upgrade.

Depending on the project, this could include:

• Electrical panel
• Main breaker
• Branch breakers
• Disconnect
• Meter equipment
• Service equipment
• Feeders
• Grounding equipment
• Surge protection
• Enclosures
• Other electrical components

Obtain current pricing whenever possible.

Equipment pricing can vary significantly depending on the manufacturer, rating, availability, and project requirements.

Determine the conductor and raceway requirements for the upgrade.

Depending on the project, you may need to calculate:

• Service conductors
• Feeder conductors
• Grounding conductors
• Conduit size
• Conduit length
• Wire type
• Terminations
• Connectors
• Fittings

The correct conductor and raceway requirements depend on the design, applicable codes, equipment ratings, installation conditions, and project specifications.

Labor can represent a significant portion of a panel upgrade.

Consider the actual work required.

Labor may include:

• Disconnecting existing equipment
• Removing the existing panel
• Installing the new panel
• Installing breakers
• Installing conduit
• Pulling conductors
• Making terminations
• Grounding and bonding
• Circuit identification
• Testing
• Cleanup

The difficulty of the installation can significantly affect labor.

A panel located in an easily accessible electrical room may be relatively straightforward.

A panel installed in a difficult location may require considerably more time.

Many electrical projects require permits and inspections.

Determine whether the project requires:

• Electrical permits
• Utility coordination
• Inspections
• Engineering
• Additional documentation

Permit requirements and costs vary by jurisdiction and project.

These costs should be considered when developing the estimate.

Service upgrades may require coordination with the electrical utility.

Depending on the project, utility involvement may include:

• Service disconnects
• Meter changes
• Service upgrades
• Temporary power
• Scheduling
• Inspection requirements

Don't assume utility-related work is included or excluded without verifying the project requirements.

Panel upgrades can uncover additional requirements.

For example, the contractor may discover that:

• Existing wiring needs modification
• Existing grounding needs improvement
• Additional circuits are required
• Existing equipment is damaged
• The service entrance needs modification
• Equipment locations need to change

These possibilities should be considered when reviewing the project scope.

Once the material quantities are known, calculate the material cost.

A panel upgrade estimate may include:

• Panel
• Breakers
• Wire
• Conduit
• Fittings
• Disconnects
• Grounding materials
• Connectors
• Labels
• Fasteners
• Miscellaneous materials

Small items should not be ignored.

They can add up over the course of a project.

Combine the major cost categories.

A basic estimate may include:

Materials + Labor + Equipment + Permits + Other Direct Costs = Project Cost

Then account for your company's overhead and desired profit to determine the final selling price.

Only Pricing the Panel

The panel itself may be one of many project costs.

Underestimating Labor

Removing existing equipment and installing new equipment can take longer than expected.

Missing Conductors

A larger service or panel may require larger or additional conductors.

Forgetting Grounding and Bonding

Grounding and bonding requirements should be evaluated as part of the project.

Ignoring Utility Requirements

Service upgrades can involve coordination with the utility.

Not Inspecting Existing Conditions

Existing installations can contain unexpected conditions that affect the estimate.

Using Outdated Equipment Pricing

Current supplier pricing is important.

AI can assist with organizing information used during an electrical estimate.

For example, an AI estimating platform may help contractors analyze project documents, organize scope information, identify potential materials, and assist with estimating calculations.

However, AI should not be relied upon to make final electrical design or code decisions.

The contractor should verify the project requirements, equipment specifications, calculations, and applicable requirements before finalizing the estimate.

VoltTrack is an AI-powered estimating platform designed to help electrical contractors streamline their estimating workflow.

For projects such as panel upgrades, AI can assist with organizing project information and reducing repetitive estimating tasks.

The contractor remains responsible for reviewing the project, verifying the information, and determining the final price.

Learn more about how VoltTrack works on the [features page](/features) or [get started today](/signup).