Electrical Panel Upgrade · Potomac, MD

Electrical Panel Upgrade in Potomac, MD: 2026 Costs & Local FAQs

Updated 2026-10-18 · Reviewed by the HomeServiceBud Editorial Team

Quick answer

An electrical panel upgrade in Potomac typically costs about $1,300–$3,000 nationally, with 100-to-200-amp upgrades in the same range. Adjusted for Maryland prices, plan on roughly $1,300–$3,000. In Potomac, the biggest local factors are high humidity and flooding.

Key takeaways

  • Typical cost in Potomac: $1,300–$3,000 (per installed panel); national range $1,300–$3,000.
  • Biggest local factors: high humidity and flooding.
  • How long it takes: Most panel upgrades take about 4–8 hours of labor, plus utility scheduling.
  • Permits: A permit is required, typically $50–$300; the electrician usually pulls it.
  • Best timing: Any season works; schedule with the utility in advance.
  • Before you hire: get at least three written, itemized quotes from licensed, insured Maryland contractors.

How much does electrical panel upgrade cost in Potomac, MD?

An electrical panel upgrade typically costs $1,300–$3,000, with an average around $2,150. Amperage, meter and service changes, and subpanels drive the price. Maryland prices run at the U.S. average, so a typical Potomac job lands around $1,300–$3,000. Local labor rates, permit fees and your home's specifics move the final number.

ItemTypical costNotes
100-amp panel installed$800–$1,500
150-amp panel installed$1,300–$1,600
200-amp panel / 100→200 amp upgrade$1,300–$3,000
400-amp service$2,000–$4,000
Meter box$200–$800Must match the new service
Subpanel$400–$1,750
Permit$50–$300Electrician usually pulls it

In a smaller community like Potomac, some specialists travel in from nearby cities and may add a trip charge. Ask whether travel is included, and consider bundling projects.

How we calculate costs

National ranges come from published cost surveys (cited below). Local estimates apply an approximate state cost index. Read our methodology.

Electrical Panel Upgrade cost questions for Potomac, MD

  • What is the cost of 100-amp panel installed in Potomac, MD? The typical cost of 100-amp panel installed in Potomac, MD is $800–$1,500.
  • What is the cost of 150-amp panel installed in Potomac, MD? The typical cost of 150-amp panel installed in Potomac, MD is $1,300–$1,600.
  • What is the cost of 200-amp panel / 100→200 amp upgrade in Potomac, MD? The typical cost of 200-amp panel / 100→200 amp upgrade in Potomac, MD is $1,300–$3,000.
  • What is the cost of 400-amp service in Potomac, MD? The typical cost of 400-amp service in Potomac, MD is $2,000–$4,000.
  • What is the cost of meter box in Potomac, MD? The typical cost of meter box in Potomac, MD is $200–$800. Must match the new service.
  • What is the cost of subpanel in Potomac, MD? The typical cost of subpanel in Potomac, MD is $400–$1,750.
  • What is the cost of permit in Potomac, MD? The typical cost of permit in Potomac, MD is $50–$300. Electrician usually pulls it.
  • What is the cost of move the panel in Potomac, MD? The typical cost of move the panel in Potomac, MD is $800–$3,000.
  • What is the cost of main breaker replacement in Potomac, MD? The typical cost of main breaker replacement in Potomac, MD is $200–$300. $500–$2,000 if the bus bar is damaged.
  • What is the cost of AFCI/GFCI breakers in Potomac, MD? The typical cost of AFCI/GFCI breakers in Potomac, MD is $35–$60 each. Often required by code.

What affects electrical panel upgrade in Potomac

High humidityHumid air around Potomac can corrode panels; rust is a common upgrade sign.
FloodingPanels that have been underwater in Potomac floods must be replaced, not dried out.

Potomac has humid summers and cool-to-cold winters. Any season works; schedule with the utility in advance.

Signs you need a panel upgrade

  • Breakers trip often
  • Lights flicker or dim when appliances run
  • You rely on power strips or can't run appliances together
  • The panel buzzes, feels hot or smells burnt
  • Rust or visible damage
  • A Federal Pacific or Zinsco panel, or plans for an EV charger or heat pump

Common questions about electrical panel upgrade in Potomac

How much does an electrical panel upgrade cost in Potomac, MD?

Most panel upgrades cost about $1,300–$3,000 in Potomac, MD. A 100-to-200-amp upgrade typically runs $1,300–$3,000 nationally.

Do I need a 200 amp panel?

Most modern homes with central air, electric appliances or an EV charger are planned around 200 amps. A load calculation tells you for sure.

Is a Federal Pacific or Zinsco panel dangerous?

Both are widely flagged as outdated, and many electricians recommend replacing them.

How much does a subpanel cost?

A subpanel typically costs $400–$1,750 installed and can add circuits for a garage, addition or EV charger.

Timeline, permits and DIY in Potomac

How long it takes

Most panel upgrades take about 4–8 hours of labor, plus utility scheduling.

Permits

A permit is required, typically $50–$300; the electrician usually pulls it. Check with the Potomac building department for local rules.

DIY or hire a pro?

Not a DIY job: a licensed electrician must do the work and coordinate with the utility.

Questions to ask Potomac contractors

Ask every bidder the same questions so you can compare quotes apples to apples.

  • Did you do a load calculation for my home?
  • Does the quote include the meter, permit and utility coordination?
  • Which breakers will be AFCI or GFCI to meet code?
  • Will the power be off, and for how long?

Maintenance that prevents costly repairs

  • Have the panel inspected if breakers trip often
  • Never ignore buzzing or burning smells
  • Label circuits clearly

How to hire for electrical panel upgrade in Potomac

  1. Use a licensed, insured electrician.
  2. Ask for a load calculation to size the new service.
  3. Confirm the permit, inspection and utility coordination are included.
  4. Get the warranty for parts and labor in writing.

Electrical Panel Upgrade in Potomac: FAQs

How much does an electrical panel upgrade cost in Potomac, MD?

Nationally, most upgrades cost $1,300–$3,000. Local permit fees and utility requirements change the final price.

Do I need a permit for a panel upgrade in Potomac?

Yes. A licensed electrician typically pulls the permit and coordinates with the utility.

Will I need a panel upgrade to add a heat pump in Potomac?

Possibly. Ask for a load calculation; many older homes need 200-amp service for heat pumps and EV chargers.

How much does electrical panel upgrade cost in Potomac compared to the national average?

With Maryland's regional cost index of 1.00, expect roughly $1,300–$3,000 in Potomac, versus $1,300–$3,000 nationally.

How long does electrical panel upgrade take in Potomac?

Most panel upgrades take about 4–8 hours of labor, plus utility scheduling. Permit and inspection scheduling in Potomac can add a few days.

Do I need a permit for electrical panel upgrade in Potomac?

A permit is required, typically $50–$300; the electrician usually pulls it. Confirm with the Potomac or county building department.

Which Potomac ZIP codes does this guide cover?

This guide applies to Potomac ZIP codes 20854, 20859, plus the surrounding area.

Electrical Panel Upgrade near Potomac

Rockville, MD
5 mi away · pop. 66,980Bethesda, MD
6 mi away · pop. 60,858Cabin John, MD
4 mi away · pop. 2,280Great Falls, VA
4 mi away · pop. 15,427Travilah, MD
5 mi away · pop. 12,159North Bethesda, MD
5 mi away · pop. 43,828North Potomac, MD
5 mi away · pop. 24,410McLean, VA
6 mi away · pop. 48,115Garrett Park, MD
6 mi away · pop. 1,044

Other home services in Potomac

HVACAC, furnace and heat pump repair, replacement and costs$7,000–$12,000RoofingRoof replacement, leak repair, hail damage and insurance$6,700–$25,000Kitchen RemodelingKitchen remodel costs, timelines, permits and ROI$10,000–$70,000Bathroom RemodelingBathroom remodel costs, timelines, showers and ROI$6,600–$18,000Water Damage RestorationLeaks, floods, burst pipes, drying and insurance$1,300–$5,400Fire Damage RestorationFire, smoke and soot cleanup, odor removal and insurance$2,900–$38,300Mold RemediationMold removal, testing, costs and insurance$1,500–$5,000Garage Door RepairSprings, cables, openers, off-track doors and costs$80–$680Foundation RepairCracks, settling, piers, slab repair and costs$2,200–$7,800Water Heater ReplacementTank, tankless and heat pump water heater costs, permits and haul-away$880–$1,800Sewer Line Repair & ReplacementSewer line repair, dig replacement and trenchless pipe bursting or lining costs$1,400–$5,300Slab Leak RepairFinding and fixing leaks under a concrete slab: detection, reroute and lining$630–$4,400Window ReplacementNew window costs by type, frame material and installation method$300–$2,100Siding ReplacementSiding costs per square foot by material, plus removal, labor and permits$8,500–$20,000Gutter InstallationGutter costs per linear foot by material, plus downspouts, guards and removal$620–$1,700Attic InsulationAttic insulation costs by type, recommended R-values and when to add more$1,700–$2,500

Sources: This Old House — Cost to upgrade an electrical panel · Angi — Cost to upgrade an electrical panel. Ranges are rounded estimates; see our editorial policy.

Local risk factors reflect general Maryland climate patterns; check FEMA's National Risk Index for county-level ratings. Local estimates apply an approximate regional cost index to national ranges.