This guide is intended to help developers, property owners and property managers to understand the electric vehicle charging requirements for new construction or modifications to existing development.
The guide is consistent with the Elk Grove Municipal Code and the 2022 California Green Building Standards Code ("CALGreen", Title 24, Part 11). More detailed information is provided in CALGreen and the California Electrical Code.
Types of EV Charging Equipment
| Level | Application | Result |
|---|---|---|
| Level 1 | Residential |
Adds 3 to 5 miles of range per hour Standard 120V outlet |
| Level 2 | Residential and Commercial | Adds 20-40 miles of range per hour 20 ampere minimum circuit |
| Level 3 | Residential and Commercial | Adds 20-40 miles of range per hour 40 ampere minimum circuit |
| Direct Current Fast Charger (DCFC) | Commercial | Adds 60-100 miles of range per 20 minutes 480V outlet |
EV Compliance Levels (Definitions)
EV Capable
A vehicle parking space with electrical panel space and load capacity to support a branch circuit and necessary raceways, both underground and/or surface mounted, to support EV charging
EV Ready
Means an EV capable space, terminating in a receptacle or a charger
EVSE Installed
Means an EV ready space with installation of electric vehicle supply equipment (EV chargers), Level 2 or DCFC
Residential and Hotel/Motel
Residential EV parking requirements are included in CALGreen 4.106.4
Single Family, Duplexes and Townhouses with Attached Private Garage.
An EV Capable space in each garage. Installation needs to include a 40-ampere 208/240-volt minimum dedicated branch circuit.
Mutli-Family, Hotels/Motels, Residential Parking Facility
| Development Size | EV Capable Spaces | Spaces EV Ready for Future EVSE | EVSE Installed |
|---|---|---|---|
| Less than 20 Units/Guest Rooms | 10% of total capable of supporting future Level 2 EVSE | 25% of total equipped with low-power Level 2 EV charging receptacles | N/A |
| 20 or more Units/Guest Rooms | 10% of total capable of supporting future Level 2 EVSE | 20% of total equipped with low-power Level 2 EV charging receptacles | N5% of total installed with Level 2 EVSE |
| Alterations of Existing Parking Facilities* *alterations which involve the addition of new parking spaces will need to meet this requirement. |
10% of new spaces capable of supporting future Level 2 EVSE | N/A | N/A |
Non-Residential (Other than Hotel/Motel)
Non-Residential EV parking requirements are included in CALGreen 5.106.5
| Total Number of Actual Parking Spaces | Number of Required EV Capable Spaces | Number of EV Capable Spaces with EVSE Installed |
|---|---|---|
| 0-9 | 0 | 0 |
| 10-25 | 4 | 0 |
| 26-50 | 8 | 2 |
| 51-75 | 13 | 3 |
| 76-100 | 17 | 4 |
| 101-150 | 25 | 6 |
| 151-200 | 35 | 9 |
| 201 and over | 20% of total parking spaces | 25% of EV capable spaces |
New non-residential projects must include dedicated EV parking spaces that include both EVSE installed and EV capable spaces. The number of EV Capable and EVSE Installed depends on the number of parking stalls, as shown in the table.
- The EVSE installed may be provided by any combination of level 2 and DCFC, with at least one level 2 required.
- The installation of each DCFC EVSE shall be permitted to reduce the minimum number of required EV capable spaces without EVSE by 5.
- The number of required EVSE installed spaces also count toward the number of EV capable spaces. For example, a parking lot with 200 spaces will require 9 EVSE installed and an additional 26 EV capable spaces, for a total of 35 EV spaces.
- Calculations for spaces are rounded up to the nearest whole number.
Medium- and Heavy-Duty
Medium and heavy-duty EVSE requirements are included in CALGreen 5.106.5.4
Warehouses, grocery stores and retail stores with off-street loading spaces will also need to comply with requirements that support the future installation of medium and heavy-duty EVSE. Based on the number of off- street loading spaces required for the development, additional capacity is required for raceway or busway and transformer and panel to allow for the future EVSE installation.
Per the EGMC 23.58.110: Off-street loading requirements for Commercial uses: One space for first 10,000 SF and one space for each additional 35,000 SF. The table below reflects these requirements.
Grocery and Retail
| Building Size (SF) | Required Number of Off-Street Loading Spaces | Additional Capacity Required (KVA) |
|---|---|---|
| 10,000 to 79,999 | 1 or 2 | 200 |
| 80,000 or more | 3 or more | 400 |
Warehouse
Per the EGMC 23.58.110: Off-street loading requirements for Industrial uses: One space for first 10,000 SF and one space for each additional 20,000 SF. The table below reflects these requirements.
| Building Size (SF) | Required Number of Off-Street Loading Spaces | Additional Capacity Required (KVA) |
|---|---|---|
| 10,000 to 49,999 | 1 or 2 | 200 |
| 50,000 or more | 3 or more | 400 |
KVA - kilovolt-ampere, or 1,000 volt-amperes
Exemptions
On a case-by-case basis, the City may determine EV charging and infrastructure are not feasible where there is no local utility power supply, where the local utility is unable to supply adequate power, or where the off-site power supply costs would be prohibitively expensive. Such determination shall be made by the designated approving authority for the subject project based upon a recommendation, if made, by the electrical service provider. Accessory Dwelling Units that are not subject to additional parking requirements are also exempt.