ATTACHMENT III
EV Charging Requirements
Hayward’s Current
Reach Code
(% of dwelling
units)
2022 CalGreen
(% of parking spaces)
2022
Model Reach Code
2022
Model Reach Code
Affordable Housing
Option A Option B
Multi-Family
(more than 20 dwelling units)
25% Level 2 EV
Capable
75% Level 2 EV
Ready
10% Level 2 EV Capable
25% low power
Level 2 EV
Ready
5% high power Level 2 EVSE
60% Level 1 EV Ready
40% high power Level
2 EVSE
60% Level 1 EV Ready
25% low power Level
2 EV Ready
15% high power Level
2 EVSE
60% high power Level
2 EV Ready
40% high power Level
2 EVSE
80% low power Level 2 EV
Ready
20% high power Level 2
EVSE
Costs for a
100-unit
Multi-Family
Project*
L1 Ready 60 60
L2 Capable 25 15
L2 Low Power Ready 38 25 80
L2 High Power Ready 75 60
L2 High Power EVSE 8 40 15 40 20
Total Ports 100 61 100 100 100 100
Total Cost $146,421 $194,185 $175,635 $397,801 $273,079 Cost/Port $2,400 $1,942 $1,756 $3,978 $2,731
% of dwellings w/access 100% 40-60% 100% 100% 100% 100% % of total const. cost** 0.3% 0.4% 0.4% 0.8% 0.6%
* Costs are estimated for 2022 and do not include the cost of transformers or increase panel capacity. Assuming 1.5 parking spaces per dwelling unit. ** The “% of total construction cost” may be as high as double as what is when accounting for transformers, etc. This is especially true of ‘Option A’ which includes the highest power requirements.
ATTACHMENT III
EV Charging Requirements (continued)
2019 CalGreen Hayward’s Current Reach
Code 2022 CalGreen Model Reach Code
(potential requirements) Recommended
Multi-Family ≤20
dwelling units
100% Level 2 EV
Ready space
10% Level 2 EV Capable
25% low power Level 2 EV
Ready
(35% total)
40% high power Level 2
EVSE
60% Level 1 EV Ready
(100% total)
15% high power Level 2 EVSE;
25% low power Level 2 EV
Ready
60% Level 1 EV Ready
(100% total)
TBD
Single Family &
Townhome
One Level 2 EV
Capable for one
parking space per
dwelling unit
Two Level 2 EV Ready
spaces per dwelling unit
No changes from 2019
CalGreen
One Level 2 EV Ready space
One Level 1 EV Ready space
Two Level 2 EV Ready
spaces per dwelling unit
Non-Res Office
6% Level 2 EV
Capable
20% Level 2 EVSE;
30% Level 2 EV Capable
5% Level 2 EVCS;
10% Level 2 EV Capable
20% Level 2 EVSE;
30% Level 2 EV Capable
Non-Res Non-Office
15% Level 2 EVSE
10% Level 2 EVSE;
10% Level 2 EV Capable
Hotel/
Motel NA NA NA
5% Level 2 EVSE;
25% low power Level 2 EV
Ready
ATTACHMENT III
EV Charging Cost Estimates
The following cost estimates are from a 2019 study1 prepared for Peninsula Clean Energy (PCE) and Silicon Valley Clean Energy (SVCE) analyzing the costs for: 1) a 60-unit multi- family project; 2) a 150-unit multi-family project; and 3) an office building with 60 parking spaces. The costs below are for EV Ready and do include costs for transformers. This study does not include costs for EVSE, and does not include and has a overall 20% contingency to account for ADA compliance. ADA can be a significant source of cost and in this study is only intended to capture a limited scope of ADA compliance.
Figure1. Cost Break-down for 60-unit Multi-family Residential Project
1 https://bayareareachcodes.org/wp-content/uploads/2020/03/PCE_SCVE-EV-Infrastructure-Report-2019.11.05.pdf
ATTACHMENT III
Table 1. Estimated Incremental Cost of installing EV Infrastructure: 60-unit Multi-family Residential Project
NC = New Construction
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Figure2. Cost Break-down for 150-unit Multi-family Residential Project
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Table 2. Estimated Incremental Cost of installing EV Infrastructure: 150-unit Multi-family Residential Project
NC = New Construction
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Figure 3. Cost Break-down for Office Building with 60 Parking Spaces
ATTACHMENT III
Table 3. Estimated Incremental Cost of installing EV Infrastructure: Office Building with 60 Parking Spaces
NC = New Construction