Option 3 fueling capacity determined by time limit?

Erica
we have used an average (4 hrs/charge) and got it accepted. Mind you this was quite a while back.
Good luck!

Erica, we uploaded the cut sheets for the charging stations. My observation and experience is that reviews have become more detailed, and if I had to do it today I would include documentation that supports the case of 4 hours being a reasonable average.

Yes. Our project was awarded the credit using this approach. We needed to provide additional explanation after the preliminary review that I have included below.

Technical Advice: LEED interpretation 10410 states “Preferred parking for low-emitting and fuel-efficient vehicles must be provided for 5% of the total parking capacity, as required in Option 1. Fueling stations may be substituted for preferred parking spaces to meet this threshold, such that one fueling station is equivalent to 1.67 preferred parking spaces.” Using these guidelines an excel worksheet has been uploaded with calculations showing that 68 preferred parking spaces are planned for Bldg. A. Additional detail of our electric vehicle policy can be found below.

Response: All employees and visitor must adhere to our Electric Vehicle Supply Equipment Use Policy and Guidelines. Electric Vehicle Supply Equipment (“EVSE”) - commonly known as charging stations, and associated Eco-Commuter/Electric Vehicle parking spaces are available on a first come, first serve basis for all employees and visitors with plug-in electric vehicles (“EV”) in accordance with the following Use Policy and Guidelines (Document uploaded). There is no fee for the vehicle charge.
Our intent is to have 2 parking spaces for every charging station. There may be some confusion with the term “charging station” as some of the EVSE units are a single pedestal with two charging cords. Therefore we call each individual cord a “charging station”. Our design is for 18 charging (fueling) stations (manufacturer documentation has been uploaded) serving 34 parking spaces. Employees parking in the EVSE Eco-Commuter spaces must limit charging times to no more than 4 hours per day.
This allows 2 vehicles to charge for 4 hours and have 2 vehicles waiting in the reserved spaces. Once the 2 initial vehicles have finished charging the cords can be swapped to the waiting vehicles while the 2 vehicles that have just finished charging can move making room for 2 additional vehicles needing to charge. This is the policy that we use throughout campus to great success.
By using our EVSE, the EV owner consents for their vehicle to be unplugged when the EVSE indicates their vehicle is fully charged. This will better enable vehicles parked adjacent to existing EVSE the opportunity to charge. Authorized personnel may disconnect your vehicle at any time. An abbreviated policy is adhered to each charging station as well
Manufacturer documentation providing the charging capacity for the EVSE has been uploaded.

We used a combo of preferred spaces and EV only spaces. If you reserve 2 spaces for each charging station, one of those can be multiplied by 1.67. Essentially giving you 2.67 preferred parking spaces for each charging station. We counted "waiting" spaces as charger spaces. This allowed us to provide preferred parking for 5% of the total parking capacity.
Search for LEED Interpretation 10410 for additional information about combining Option 1 and Option 2.