Do I Need a Panel Upgrade for My Kitchen Remodel? Load Calculations, Utility Steps and Alternatives

Short answer: not necessarily. A kitchen remodel adds required circuits, and switching to induction, a heat pump, a heat pump water heater or an EV charger adds large loads. Whether your existing equipment can handle them is answered by a load calculation for your planned equipment plus an inspection of the panel's condition, available spaces and compatibility. There are several possible answers: no change; an approved subpanel or listed breaker arrangement to solve a space problem; a new panel; a larger utility service; or load management that keeps new loads within the existing service. Start early, because anything involving the utility runs on its schedule.

This is general information verified on 3 October 2026. This guide assumes work by a licensed electrician under permit; some jurisdictions allow owners to do limited electrical work on their own homes under an owner-builder permit, with its own responsibilities and risks.

What Bay Area owners run into

A homeowner with a 100-amp panel and underground service reported being quoted widely different timelines for a 200-amp upgrade. Another owner adding a heat pump during a permitted remodel was told a calculation put the house at about 104 amps on 100-amp service. A Bay Area owner described using a load-management device to stay on 100-amp service while adding a heat pump and HPWH. An HVAC designer said they determine what the equipment actually requires electrically so the panel decision is not an assumption. Forum accounts are anecdotal; they show why the calculation and utility step need early attention.

What city handouts say

Kitchens carry fixed circuit requirements under the 2025 California Electrical Code, which applies to permits from 1 January 2026. Cupertino's current handout lists required kitchen circuits and protection and warns that the main panel may need upgrading based on field verification (Cupertino kitchen remodel handout). Pleasanton's says the existing main or distribution panel may require upgrading to accommodate required breakers (Pleasanton JLA 01.26). Both say to verify; neither says every remodel needs a new panel.

Space, capacity and condition are different problems

Panel replacement, subpanel, service upgrade: how they compare

The PG&E process, briefly

PG&E's own panel upgrade roadmap says any new load addition requires an evaluation and an application through its Your Projects portal. PG&E then assesses whether lines and transformers can serve the new load, may require an upfront advance for that assessment, and, if infrastructure work is needed, provides a design, estimate and contract before scheduling. After the panel work passes city inspection, PG&E reconnects. PG&E says timing varies with project complexity and request volume, and recommends submitting early with a full list of planned loads, site photos and the proposed panel location. Because PG&E says new load additions require evaluation, ask your electrician whether your project needs a PG&E application even when you are not upgrading service. If another utility serves you, follow its process.

Worked example: one remodel, three paths

A hypothetical 1,600-square-foot 1960s house has 100-amp service and a full panel. The owners plan a kitchen remodel with an induction range and expect to add a heat pump and HPWH within two years, and perhaps an EV charger.

• Path A, kitchen now. The calculation shows the kitchen circuits and range fit within 100 amps, but there are no spaces. The electrician evaluates whether the panel is in good condition and compatible with an approved subpanel or listed breaker option; if not, a same-size panel replacement solves space.
• Path B, everything at once with high-demand equipment. The calculated load exceeds 100 amps. That points toward a service upgrade, with the utility's evaluation and timeline, unless the design changes.
• Path C, everything with managed demand. The same goals, but with a 120-volt HPWH, a modest EV charging rate and a listed load-management device. The calculation now fits within 100 amps, subject to inspector acceptance. Exceeding 100 amps in Path B did not automatically mean a service upgrade; it meant that design choices matter.

The owners choose based on cost, timeline and certainty about future loads. This is illustrative, not a calculation for any real house.

Energy Code readiness items

The CEC's 2025 single-family mandatory measures summary includes readiness provisions that reserve panel space and wiring: "240V ready" provisions near gas cooktops, furnaces and dryers, and battery-storage readiness for single-family homes whose utility electrical service is greater than 125 amps (§§ 150.0(s), (t), (u), (v)) (CEC 2025 mandatory measures summary). How they apply to an alteration depends on scope; ask your designer and plan panel space accordingly.

Mistakes to avoid

• Assuming the main breaker rating tells you whether you have room.
• Asking about the panel only at rough-in.
• Adding non-listed or incompatible breakers to squeeze in circuits.
• Applying to the utility with an incomplete list of future loads.
• Buying appliances before the electrician confirms circuits.
• Treating forum timelines as forecasts.

Checklist

• List of planned and likely future electric loads
• Load calculation, panel-space check and panel condition assessment
• Decision among subpanel, listed breaker option, panel replacement, service upgrade or load management
• Utility evaluation or application asked about early
• Budget for possible utility deposits and infrastructure costs
• Permits pulled; inspection before reconnection
• Readiness provisions checked with your designer
• Panel work written into the contract (BPC § 7159)