Many Los Angeles homes can add a Level 2 EV charger without a panel upgrade by using an energy management system that keeps the total electrical load within the service rating. NEC Article 625.42 recognizes this approach, and the California Electrical Code (Title 24, Part 3) is based on the NEC. A panel upgrade typically costs $3,500–$6,500, and $5,000–$7,000 when the service or meter changes, so avoiding it can matter. The right method depends on a load calculation for your home, your panel space and your utility. Kilowire runs that calculation, pulls and manages the permit, and tells you plainly when an upgrade is the better choice. Start with a free estimate and bring a photo of your panel.
Why a 100 Amp Home Struggles With EV Charging
A Level 2 charger can draw a large continuous load, often as much as an electric range. Add an air conditioner, dryer and water heater, and an older 100 amp service can be pushed to its limit on a hot evening. The traditional fix is a bigger service. Load management is the alternative: the charger slows down or pauses when the rest of the house needs the power, so the peak never exceeds what the service can carry.
Load Management Options
| Option | How it works | Best for | Limits |
|---|---|---|---|
| Energy management controller (for example DCC-12) | Monitors the service and limits the charger | Homes with a tight 100A service | Needs a load calculation and a compatible charger circuit |
| Smart splitter (for example NeoCharge) | Shares one 240V circuit between a charger and an appliance | Dryer or range circuit near the garage | Depends on the existing circuit |
| Meter socket adapter (for example ConnectDER) | Adds a circuit at the meter without opening the panel | Panels with no free space | Utility approval and availability vary by area |
| Panel upgrade to 200A | Raises the service capacity | Homes planning several large loads | $3,500–$6,500, or $5,000–$7,000 with a service or meter change |
Is It Code-Compliant?
Load management must be done with listed equipment installed to the manufacturer’s instructions and the adopted electrical code, and it requires a permit and inspection like any EV circuit. Do not add a 240 volt circuit or bypass a breaker yourself; this work happens inside the panel and should be done by a licensed electrician. We pull and manage the permit for you; depending on your city we file with the right agency, for example LADBS in the City of Los Angeles. See permits and inspection coordination.
When a Panel Upgrade Is the Better Choice
Load management is not a cure for every home. If the panel is a Federal Pacific or Zinsco model, if the service conductors are undersized, or if you also plan solar, a battery or a heat pump, upgrading usually makes more sense. Our panel upgrade service and the panel upgrade guide cover that path, and the full charger process is in our Level 2 EV charger guide. The overview page EV charging without a panel upgrade compares the options for your home.
Frequently Asked Questions
Q1: Can I install an EV charger on a 100 amp panel?
A1: Often yes. A load calculation decides, and an energy management system can limit the charger so the service is never overloaded.
Q2: Does an energy management system need a permit?
A2: Yes. The charger circuit and the controller are installed under an electrical permit and inspected by your city or county.
Q3: How much does it cost compared with a panel upgrade?
A3: A panel upgrade typically costs $3,500–$6,500 in Los Angeles County. Load management hardware is priced after a load calculation, because it depends on your panel and charger.
Q4: Will my charger be slower with load management?
A4: Only when the rest of the house is using a lot of power. Most of the time the charger runs at full speed, especially overnight.
Get a Free Estimate
Questions about your home? Call (626) 600-0818 or request a free estimate. A diagnostic visit is $99. We pull and manage the permit for you; depending on your city we file with the right agency.
Prices are for general reference. The price of each project is individual and depends on the building and the scope of work, and is confirmed after an estimate. Permit rules, fees, codes and utility requirements vary by city and change over time. Please confirm the details on the official website of your city's building department and your utility before starting work.
Written by the KiloWire Team. Kilowire Electric is a d/b/a of SKILL SEE SERVICES INC, CSLB License #1110475 (B, C-10), 6018 Washington Ave, Whittier, CA 90601.