San Francisco Parking Strain & the EV Opportunity: Start with LED, Then Add EV Chargers

Aug 29, 2026  ·  T&G Consulting and Design

The Parking Reality in San Francisco

San Francisco's parking ecosystem is under measurable strain. The city has approximately 442,000 public parking spaces: roughly 275,500 on streets and 166,500 in private garages and lots, based on a 2014 parking census. [1] A state law prohibiting parking within 20 feet of a crosswalk approach eliminated approximately 13,775 on-street spots — roughly 5% of all street parking. [2] Nearly half a million registered vehicles compete daily for what remains.

For residents of multi-family HOA buildings with secured subterranean garages, a deeded parking space is a critical fixed asset — and EV charging access is quickly becoming part of its value.

Step One: Replace Incandescent Bulbs with LED

Before planning any EV charging deployment, the most cost-effective first step is replacing all common-area incandescent light bulbs with LED equivalents. This single change frees meaningful electrical panel capacity at a fraction of the cost of a panel upgrade.

Each fixture replacement cuts draw from ~14 W to 11 W total (7 W bulb + 4 W driver). Across an entire garage or building corridor — where dozens or hundreds of fixtures run continuously — the aggregate reduction on dedicated lighting circuit breakers approaches 50%. That headroom is directly available for Level 2 EV charger circuits without touching the main panel capacity.

Choosing the Right EV Charging Infrastructure

Not all EV charging solutions are equivalent for multi-family residential settings. The right choice depends on building age, electrical capacity, HOA structure, and which state utility rebates are available. Below is a comparison of the leading brands across California and the rest of the United States.

California vs. the Rest of the U.S. — Key Differences

Top Integrated Hardware & Network Brands

These manufacturers produce both the physical charging hardware and the backend management software.

Hardware-Agnostic / Open Protocol (OCPP) Brands

OCPP (Open Charge Point Protocol) hardware prevents vendor lock-in — the software platform can be swapped without replacing physical chargers. Preferred by property managers seeking long-term flexibility.

Software-First Platforms (Bring Your Own Hardware)

In multi-family properties, the network software managing tenant access is as critical as the hardware. Leading multi-tenant platforms:

• EV Connect (owned by Schneider Electric) — manages mixed-brand charger setups; widely used nationally.
• AmpUp — popular in NY, CA, and FL for small-to-midsize apartment buildings needing simple load management and tenant billing.
• SWTCH Energy — specializes in multi-family and multi-tenant real estate with advanced load-sharing for older buildings.

Mobile / Transitional Solutions

• Portable units (e.g., EVSafeCharge Ziggy) provide flexibility during transition periods.
• Associated electrical permit work establishes conduit and panel reservations, future-proofing spaces for permanent Level 2 EVSE.

Key Features to Require for Multi-Story Garage Deployments

• Dynamic power management — 4 to 8 chargers sharing a single 40A or 50A breaker, throttling output based on active sessions.
• Cellular / mesh connectivity — multi-story concrete blocks standard cellular. Look for hardwired Ethernet or local Wi-Fi mesh support, or deploy a carrier-authorized 4G LTE / 5G signal extender (booster) to beam coverage underground. POE-backed distributed antenna systems (DAS) are the most reliable solution for deep subterranean garages.
• Sub-metering & reimbursement — automatic tenant billing with payment remittance to the HOA or property manager.
• Utility rebate eligibility — Energy Star Certified and OCPP-compliant hardware required by California (CALVIP), New York (NYSERDA), Washington (PSE), and select Florida utilities.

Maximizing EV Capacity Without Expanding the Electrical Room

Replacing aging switchgear while adding high-capacity EV charging — without expanding the physical electrical room footprint — is achievable by swapping legacy gear for high-density, smart distribution equipment. The four major U.S. electrical equipment manufacturers each offer space-saving solutions designed for exactly this scenario.

The "Big Four" U.S. Manufacturers

Smart Retrofit & EVEMS Options (No Full Switchboard Replacement Required)

When replacing the main utility switchboard is cost-prohibitive, UL-listed EV Energy Management Systems (EVEMS) multiply tenant charging capacity on existing or slightly downsized service footprints.

Key Architectural Strategies for Small Electrical Rooms

• Shift logic to software (EVEMS): Per NEC 625.42, a certified EV Energy Management System allows electrical engineers to calculate panel sizing based on managed load rather than peak potential load — enabling 4× to 8× more EV ports on the same main service size.
• Overhead cable trays: Run home-run conduits from high-density main panels directly to ceiling-mounted cable trays that exit into multi-story parking structures, clearing wall space in cramped electrical rooms.
• Sub-metering / smart breakers: Consolidate tenant billing using revenue-grade sub-metering embedded directly into the central switchboard rather than installing banks of physical utility meters.

Connectivity in Subterranean Garages

Networked Level 2 chargers depend on continuous connectivity for billing, load balancing, and remote monitoring. Subterranean concrete and steel garages block cellular signals entirely. Installing POE-backed 4G/5G boosters or Wi-Fi 6 throughout the garage ensures chargers stay online and future-proofs the space for connected EV platforms. For assistance with LTE / 5G network coverage in underground parking, contact T&G Consulting.