POWER September 2023 - S19

SEPTEMBER 2023 | WWW.POWERMAG.COM
ENERGY STORAGE PRESENTATIONS
TECH
❯❯ Extending the Remaining Useful
Lifetime of EV Batteries in Stationary
Second-Life Applications - Insights of
the Projects EMILAS and PIONEER
Presented by: DEPARTMENT ELECTRICAL ENERGY STORAGE,
FRAUNHOFER INSTITUTE FOR SOLAR ENERGY SYSTEMS ISE
Before recycling, aged EV batteries can still be used as stationary
electric energy storage in so called second-life applications,
but with this approach fast and reliable methods
for qualification of used EV batteries is crucial. This presentation
will cover two projects - EMILAS and PIONEER
- second-life battery storage systems used for increased
PV self-sufficiency, for peak shaving and for enabling flexible
charging of electric vehicles, highlighting qualification
methods, system concepts and the gained field experiences.
❯❯ How UL 1974 Supports the Safety of
Second Life EV Batteries Used in Energy
Storage Systems
Presented by: UL SOLUTIONS
As EV batteries near the end of their performance life in a
car, typically there is sufficient life that can be repurposed
and utilized in other applications. When it comes to safety,
UL has developed safety standards for EV batteries and for
energy storage. But where does a repurposed battery fit into
a safety certification scheme? UL published UL 1974, which
is the first standard to address the processing of used batteries
for other applications such as energy storage.
❯❯ Battery Cell-Level Control
Fundamentally Changes Stationary
Battery Energy Storage: Unlocking
Improved Capacity, Cost, and Safety
While Enabling a First and Second-Life
Batteries Circular Economy
Presented by: RELECTRIFY
Conventional stationary battery energy storage systems
need significant improvement to see the exponential uptake
needed to reach U.S. decarbonization goals. This session
describes the benefits of adopting cell-level control
for stationary battery energy storage systems, technology
which has the potential to transform battery system safety,
performance longevity, and cost - to further accelerate
decarbonization of the grid. Conventional systems rely on
DC strings of battery cells, a Battery Management System
(BMS) and a separate Power Conversion System (PCS). Such
an architecture has numerous cost, safety, and operational
limitations with system performance that is limited by the
weakest cell in each string. This session describes a fundamentally
different architecture which delivers grid-compliant
AC directly from the battery pack, and achieves full
utilization of the capacity of every cell in the system.
❯❯ Experimental Evaluation of Power-toGas-to-Power
for Long-Duration Energy
Storage
Presented by: NATIONAL FUEL CELL RESEARCH CENTER,
UNIVERSITY OF CALIFORNIA, IRVINE
As the number of wind, solar, and batteries projects looking
to interconnect into the nationwide grid and climate change
increases the summer demand for peak power, " peaker "
plants are required to supply energy demand for both short
and long duration grid outages. Existing peakers emit pollutants
at a higher rate than baseload plants, spewing harmful
emissions from fossil fuel combustion into communities that
surround them, which are often already overburdened by pollution.
Zero emission peakers can reliably solve this problem
and set us on the path for a 100% carbon free grid. Seasonal
excesses and deficits of renewable energy may provide an
opportunity to meet peak load demand through the conversion
to hydrogen and reconversion of hydrogen into electricity,
otherwise known as power-to-gas-to-power (P2P). The
presentation focuses on a dynamic system simulation model,
built using Python.
❯❯ How Breakthrough Nickel-Hydrogen
Batteries Stack Up Against Traditional
Lithium-Ion Incumbents
Presented by: ENERVENUE
McKinsey projects that renewable energy will provide more
than half the world's power supply by 2035 - and 75% by 2050.
However, many of the long-duration energy storage applications
needed to complete the energy transition cannot
be addressed with lithium-ion incumbents due to technology
limitations. Additionally, the short technical life of lithium-ion
batteries necessitates augmentation over project
lifetime, which can compound project cost and inject additional
investment risk. This presentation will include a deep
dive into the unique advantages of nickel-hydrogen technology
as well as the applications and use cases where it has the
most potential to thrive.
❯❯ How Hydropower and CAES are Leading
LDES Solutions
Presented by: RYE DEVELOPMENT, HYDROSTOR
Long duration energy storage (LDES) is at the epicenter
of the clean energy transformation providing essential
flexibility, grid reliability and resiliency. With aggressive
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POWER September 2023

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