The study has two parts, a managed charge pilot program
involving BMW i3 owners and a battery second life energy storage system. In the
managed charge pilot program, select BMW i3 owners will allow PG&E to
request a delay in the charging of their vehicles by up to an hour, when grid
loads are at their peak. The program also includes a “second life” for used
MINI E batteries, by repurposing these batteries into a stationary
solar-powered electric storage system located at the BMW Technology Office in
Mountain View, California.
BMW i ChargeForward is designed to explore how to better
match the impact of electric vehicles with other dynamic energy supply and
demand sources.
Grid efficiency through managed charging, combined with a
used EV battery “second life” system.
The goal of the pilot is to provide PG&E with 100
kilowatts of capacity at any given time, regardless of how many BMW electric
vehicles are charging, as part of a voluntary load-reduction program known as
“Demand Response.” The benefit to PG&E of more efficient use of existing
power grid resources through EV charging management is passed on in the form of
monetary incentives to program participants. Improved grid utilization, resulting
from EV charging management combined with a solar-powered “second life” battery
system, is expected to reduce stresses on the grid while supporting the
integration of renewable energy.
Program participation.
Up to 100 BMW i3
drivers located in the San Francisco Bay Area who complete a
pre-qualification survey at www.bmwichargeforward.com, starting in January
2015, will be selected to participate in the managed charge segment of the
pilot from July 2015 to December 2016. Throughout the 18 month pilot, BMW will
manage the charging of participating BMW i3 vehicles, while prioritizing the
e-mobility needs of participants based on timing by which vehicles should be
fully charged, as communicated through a smartphone app.
For each program “event,” when PG&E experiences peak
load conditions, participants whose vehicles are selected for delayed charging
will receive a text message notifying them that their vehicle will stop
charging for up to one hour, thereby temporarily reducing the load on the power
grid. Using the BMW i ChargeForward smartphone app, participants can opt out of
any request based on their driving needs, and their vehicle charging will
continue uninterrupted – for example, if they need to depart for a trip during
peak load times and need a full charge sooner.
As an incentive for participating, selected drivers will
receive $1,000 initially, and an additional reward of up to $540 at the
conclusion of the program, based on their level of participation in charging
Demand Response “events,” as well as participation in occasional BMW or
PG&E sponsored surveys or questionnaires.
BMW will begin accepting applications at
www.bmwichargeforward.com in January, and the program will kick off in July
2015.
EV battery “second
life” system using MINI E vehicle batteries.
The battery second life portion of the project involves a
full-scale stationary energy system built from eight used MINI E batteries to
store energy and return it to the power grid. This 200 kilowatt-hour system,
located at the BMW Technology Office in Mountain View, California, is one of
the largest second life systems in the world.
At the end of a vehicle’s life, these batteries still have
at least 70% of their original storage capacity available, making them suitable
for re-use. By removing them from the vehicle and installing them in a
stationary storage system with integrated solar power generation, new renewable
capacity can be added to the grid—supported by resources that once took energy
from it.
This additional power will supplement the energy load
reduction by intelligent management of BMW i3 charging, to ensure PG&E grid
needs are met, based on signals sent to BMW by PG&E as part of Demand
Response.
BMW i ChargeForward project goals.
The goal of the pilot is to make electric vehicles even more
attractive to our customers by ultimately reducing the total cost of EV
ownership while demonstrating the ability to integrate renewable energy into
the grid, extending the BMW Group’s commitment to sustainability as
demonstrated by BMW i.
Total costs of ownership could be reduced, for example, as
utility companies provide drivers with incentives to manage their electric
vehicle charge times; these incentives could offset the cost of installing a
charging station at home.
BMW brings its extensive e-mobility history full circle.
The BMW Group took a significant step in the adoption of
sustainable mobility with the MINI E pilot project in 2009, and then again with
the BMW ActiveE Field Trial in 2011. Experience from these field trials paved
the way for the first born-electric production BMW EV, the BMW i3. BMW i
ChargeForward employs both used MINI E vehicle batteries from the MINI E Field
Trial as well as a small group of on-the-road BMW i3 vehicles, to advance the
benefits of sustainable mobility.
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