LODI, CA – Members of thirteen public utilities
and entities were applauded by over 300 invited guests
and media at the dedication of the $388 million Lodi
Energy Center on August 10th. LEC is home to the
Siemens Flex-Plant 30 technology, enabling seamless
integration of renewable energy sources.
“Lodi Energy Center will be the first operating
Siemens Flex-Plant combined cycle plant in the USA
and will contribute to meeting California’s ambitious
renewable energy and green house gas reduction goals.
This innovative fast ramping gas fired plant was specifically
designed by Siemens as a solution to balance fluctuations
on diverse power grids managing both renewable
and traditional energy sources,” said Mario Azar,
President, Siemens Energy Solutions, Americas.
The LEC is owned and operated by Northern
California Power Agency. “NCPA is proud that the Lodi
Energy Center is the first generating facility in
California to utilize the Siemens Flex-Plant 30 ‘faststart’
technology. The plant’s technology will help strengthen electrical system reliability as
variable renewable resources continue to be
deployed to achieve California’s important
energy goals,” stated James H. Pope,
General Manager, Northern California
Power Agency during the dedication ceremony.
The Siemens Flex-Plant 30™ Power
Island consists of a Siemens SGT6-5000F
gas turbine-generator operating in combined
cycle mode with a Siemens SST-
900RH steam turbine-generator. To power
the steam turbine, gas turbine waste heat is
captured by a Benson-style Heat Recovery
Steam Generator (HRSG) provided by
Nooter/Eriksen. The plant uses a Siemens
SPPA-T3000 control system.
Mario Azar, President
Siemens Energy Solutions, Americas
The Siemens Flex-Plant 30™ fast-start
capability is designed to deliver about 200
MW of power capacity within only 30 minutes.
Fast-start technology will allow participants
to expand and rely more on weatherdependent
wind and solar energy resources
since LEC can provide timely backup
power. Fast-start also reduces greenhouse
gas emissions by 30% when compared to
conventional units. Other features that contribute
to start the plant very fast are innovative
piping warm-up strategies, the
Siemens’ steam turbine stress controller
(TSC), a modern water treatment system,
and optimized plant stand-by using auxiliary
steam to maintain vacuum. Using the
Siemens SGT6-5000F gas turbine as the
prime mover, the plant will provide high
power density while requiring a relatively
small plant footprint and is capable of daily
cycling at efficiencies over 57 percent. Siemens has made steady engineering
improvements to their STG6 turbine based
on 3.5 million hours of operational experience,
CO₂ and NO× emissions will be constrained
by the LEC to 2ppm each. This
amounts to a two-thirds reduction in the CO₂
emitted by these machines since the year
2000 (down from 6ppm), as well as a onethird
reduction in NO× (down from 3ppm).
LEC uses reclaimed water from Lodi’s
White Slough Water Pollution Control
Facility located adjacent to the power plant.
The tertiary-treated water is further processed
by LEC’s advanced water quality
facilities before use in the steam generation
process and in the power plant cooling system.
LEC utilizes a seven-cell cooling tower
provided by SPX Cooling Technologies, Inc.
The City of Lodi is expected to receive
approximately $1 million for the sale of
1,800 acre-feet of reclaimed water annually,
turning a water disposal liability into a
financial asset for the host city.
The site is also adjacent to the NCPA’s
existing combustion turbine STIG unit
installed in 1995. A new 2.7-mile gas pipeline
will be placed and LEC will be able to
tie directly into the power grid through the
All OEM equipment for the Lodi
Energy Center was delivered ahead of
schedule. Siemens assigns a factory load
planner to monitor the manufacturing of the
gas turbine and steam turbine for all projects
to resolve any schedule issues. For
LEC, a project expediter was dispatched by
the Siemens Orlando-Team to Finspong in
Sweden to monitor and expedite the critical
path steam turbine manufacturing progress.
Siemens also assigned a project specific
site services procurement specialist to
support unplanned or emergency needs for
parts or services. They developed a logistics
plan for special rail car usage and transit
clearance and routing to ensure the gas
turbine and the generator delivery to site
without schedule delays through the Port of
SAFETY AT LEC
Siemens followed a detailed safety program
for the site. Siemens Project Manager
and Project Engineer independently conducted
and documented a formal site Safety
Walk at every site visit. There were also regular
site audits to assure adherence to
Siemens and site procedures and prompt
action and resolution for any quality incident
reports. This focus on safety resulted in an
impressive Zero Lost Time Accidents (LTA)
for OEM or its subcontractor personnel with
over 16,000 man-hours on site.
Siemens also provided in house
expertise to assist in interfacing and obtaining
design approval of specialty engineering
designs including CBO, Fire Marshal, and
authorized ASME Inspector approvals.
The Northern California Power
Agency (NCPA) is a California joint-action
agency originally established in 1968 that
owns and operates a portfolio of electricity
generation resources that are 95% carbonemission
Nine of NCPA’s 16 members, along
with four other public entities, are sharing in
LEC’s investment and benefits. The City of
Santa Clara’s Silicon Valley Power is a major
participant in the LEC with a 25 percent
share of the project. The San Francisco Bay
Area Rapid Transit District (BART) will use
its portion of LEC’s output to help power its
transit system trains. The Modesto
Irrigation District and the municipal utilities
serving Lodi, Gridley, Ukiah, Healdsburg,
Biggs, Lompoc, and Azusa will receive LEC
energy, along with the Plumas-Sierra Rural
Electric Cooperative, and the Power and
Water Resources Pooling Authority.
The largest participant, DWR, with a
33.5 percentage will pump water along the
California Aqueduct to benefit millions of
Central and Southern Californians.
In the Bay Area, Silicon Valley Power
will use energy to help power Santa Clara’s
high-tech and internet communications
businesses. BART will use the LEC to
power their trains throughout the Bay.
The benefits of this new power plant
will be felt as far north as the Plumas-
Sierra Rural Electric Cooperative, headquartered
in Plumas Count, and as far
south as the City of Azusa in Los Angeles
The NCPA member communities of
Lodi, Lompoc, Gridley, Ukiah, Healdsburg,
and Biggs will utilize their energy shares to
serve their homes and businesses.
The Power and Water Resources
Pooling Authority will distribute its share
of energy to nine irrigation districts located
in the Sacramento and San Joaquin
Valleys and in coastal counties north and
south of the Bay.
The Modesto Irrigation District will
provide LEC energy to its residential, commercial
and agricultural customers.
REVENUE BOND FINANCING
Based upon LEC Power Sales
Agreement obligations, NCPA issued revenue
bonds in 2010 on behalf of 13 participants.
MID financed its portion independently.
A portion of the bonds were issued
as “Build America Bonds” under the
American Recovery and Reinvestment Act
of 2009, resulting in a $23 million savings in
project financing costs.
During the more than two years LEC
was under construction, it created hundreds
of high paying jobs for Central Valley workers.
A minimum of 80 percent of the 300
skilled LEC workers resided within 50 miles
of the Lodi area. Under the “Helmets to
Hardhats” program, three percent of the
construction workers were military veterans.
FLEX-PLANT 30 IN TEXAS
Panda Temple Power completed
financing for a 758 MW gas fired combinedcycle
power plant and selected a turnkey
construction consortium of Siemens and
Siemens will deliver the power island
including two gas turbines, one steam turbine,
three generators and the instrumentation
and control system, using FLEXPLANT
Bechtel will be responsible for the
engineering, procurement, construction
and commissioning of the facility. The 250
acre facility is in Temple, TX, south of
Dallas. Commercial operations of the plant
are expected to begin in 2014.
FLEX-PLANT 10 IN CALIFORNIA
The El Segundo Energy Center was
originally designed as a redevelopment project
in 2000 when it submitted its application
to the California Energy Commission for
certification. It was designed as a 630-MW
gas-fired combined cycle power plant and
would replace two of the four existing generating
units built by Southern California
Edison in the 1950’s. At the time, it was
jointly owned by Dynegy and NRG.
The CEC approved the project in
2006, not without controversy. Emissions
permits were at the heart of the controversy,
along with once-through ocean cooling
which the existing generators use.
In 2007, the company submitted a
request to the CEC to amend the plant’s
license. El Segundo proposed eliminating
the use of ocean water as the cooling watersource for the project by redesigning the
facility to use Siemens’ new fast-start
R2C2 turbines and dry cooling, changing
the nominal plant capacity from 630 MW
to 560 MW.
Additional changes were proposed
to support this change in design and to
address a new laydown area and new
equipment delivery options, including
ocean delivery over the beach and a new
The CEC approved the redesigned
project in July 2010. Construction began
in May 2011.
Siemens has successfully completed
over 330 projects worldwide; over 105
turnkey projects were completed in the