Energy storage milestone: PG&E, Tesla begin building 730MWh battery system

Utility-scale battery storage took a
Major leap forward this past month since Pacific Gas & Electric and Tesla started construction to a 182.5-MW lithium ion system in Monterey County, California.

PG&E will Have the facility at
Its substation at Moss Landing, however, the construction design and maintenance
operations will be joint effort both by the San Francisco-based utility as well as the
battery life and EV producing giant. The partners say, once finished, Moss
Landing will be the greatest utility-owned, li-ion battery energy storage system
in the world.

“Battery energy storage plays
An integral role in improving overall grid efficiency and reliability,
while decreasing dependency on fossil fuel production including renewable sources. It can act as an alternative to more expensive cables options, leading to lower costs for our customers,” stated Fong
Wan, senior vice president, Energy Policy and Procurement, PG&E. “The
scale, the endurance and purpose of the Moss Landing Megapack system allow it to be a
milestone in the development and installation of batteries. ”

It includes installation of 256 Tesla Megapack battery units on 33 cement slabs. The Megapack, that was launched with the firm last year and has been made in the Tesla Gigafactory1 at Nevada (pictured), can save up to 3 MWh of power per unit.

Each unit homes batteries and
Power conversion equipment in a single cabinet. Transformers and switchgears
will also be installed together with the Megapacks to join energy stored in the
batteries together with an 115 kilovolt (kv) electric transmission system.

The BESS will have the potential
Shop and dispatch up to 730 MWh of energy to the electrical grid in a maximum
rate of 182.5 MW for up to four weeks during periods of high demand. PG&E’s
agreement with Tesla contains an upsize option that can increase the ability of this machine up to half an hour or 1.1-GWh total.

Moss Landing BESS will take part
In the California Independent System Operator (CAISO) markets, supplying energy
and ancillary service–such as serving as an operating reserve that can easily be discharged to make sure there is sufficient generation to meet load — to the
CAISO-controlled grid.

“Energy storage is Crucial in
Achieving California’s energy targets, and also the California ISO looks forward
to working with PG&E in advancing its storage projects,” stated Mark
Rothleder, vice president, Market Quality & California Regulatory Affairs,
CAISO.

Back in February 2017, PG&E deployed
Its very initial lithium-ion energy storage system, including Tesla Powerpack
technology, in its Browns Valley substation (roughly 50 km north of
Sacramento).

As of May 2020, PG&E has
Contracts for battery energy storage projects totaling over 1,000
MW capability to be deployed through 2023 throughout its service region.
Third-party owned projects comprise a transmission-connected 300 MW BESS (also
to be situated in Moss Landing), also a transmission-connected 75 MW BESS located
near town of Morgan Hill, Calif, and a 2 MW BESS in PG&E’s Gonzales
substation at the Salinas Valley. PG&E-possessed projects comprise a 20 MW BESS
situated at PG&E’s Llagas substation at Gilroy, Calif..

In accordance with 50 PG&E workers and
Contractors will assemble the machine, and all COVID-19 security protocols
including a health check, physical distancing, and face sheets will probably be followed closely. The BESS has been approved by the California Public Utilities
Commission at November 2018 and by the Monterey County Planning commission in
February 2020.

CAISO functions about 80 percent of California and also a part of
Nevada. California state leaders are currently mandating 100 percent clean energy
production including 33% at this year’s end.

Energy Storage backers say that batteries may
Smooth out the so-called & ldquo; rdquo & duck curve; impact of solar penetration during the day when demand is comparatively low, however, production drops as requirement rises in the day. California is the state ’therefore leading
solar energy nation, with over 27,400 MW installed capacity as of last
year,” according to the Solar Energy Industries Association.

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