Case Studies

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AES Energy Storage Angamos:

Battery Energy Storage System (BESS)

In 2011, AES Gener, in cooperation with its subsidiary Empresa Eléctrica Angamos, completed construction on a 544MW thermal power plant in the town of Mejillones in Northern Chile. The plant provides electricity to this important mining region.

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Trane St. Lucie Case

It’s all about the kids and St Lucie, Florida public schools kept that in mind when they reduced the annual cost of energy by more than $5M, using thermal energy storage to generate ice at night and help cool the buildings during the day. This savings allowed for 70 new teachers and significantly reduced class size. – A win for the kids, the administration and local taxpayers!

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Capturing the Multi-Faceted Value of Energy Storage

S&C Electric Company

In late 2014, Minster executed a power purchase agreement with Half Moon Ventures for the supply of power from a new 4.2-MW photovoltaic solar facility. The project goal was to expand the city’s electrical department’s footprint in renewable energy and provide cost-effective power. During design of the photovoltaic plant, Half Moon Ventures recommended expanding the project scope to include energy storage. For the inclusion of energy storage to make financial sense, the system had to capture multiple revenue streams.

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Delivering 100% Commercial Reliability:

AES Los Andes Battery Energy Storage System (BESS)

AES Gener’s Los Andes substation is located in the Atacama Desert in Northern Chile and provides electricity to this important mining region. To ensure grid reliability against transmission or generation losses, power generators in the region each hold back capacity to meet system response for primary and secondary reserves. If an alternate solution could qualify to meet the critical grid reliability needs, then AES would be able to supply more needed energy generation to this important region of Chile.

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Earning Revenue via Multiple Value Streams:

Kaheawa Wind Farm Dynamic Power Resource (DPR®) Energy Storage

First Wind built a second phase to the Kaheawa Wind Project (KWP II) adding an incremental 21 MW of wind generation on the island of Maui on the Maui Electric Company’s 69 kV electric system. In order to mitigate the effects of wind volatility on an island grid, Xtreme Power designed a 10 MW Dynamic Power Resource® (DPR) to integrate with the 21 MW KWP II facility operating on a 80-200 MW grid. Wind development in high penetrations requires grid flexibility.

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Energy Storage System:

Helps Aussie Utility Improve Rural Power Reliability

Powercor, one of Australia’s largest utilities, faced a situation where customers along a rural powerline were experiencing poor reliability. These customers, located in Buninyong, a suburb of Ballarat in Victoria, experienced three 90-minute outages on average per year, resulting in lost revenue for local business and inconvenience for residential customers. Powercor decided to investigate energy storage as a possible solution to quickly increase reliability and network capacity instead of waiting for 2017 and 2019 to conduct capital upgrade works. The utility’s engineers believed an energy storage system could power the line from the battery during grid outages and peak-shave during times of high demand to reduce stress on the network’s assets.

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Frequency Regulation Services and a Firm Wind Product:

AES Energy Storage Laurel Mountain Battery Energy Storage (BESS)

AES Laurel Mountain is a 98MW wind power generation plant located in Belington, WV that is built to supply more than 260,000MWh of renewable energy annually to the PJM Interconnection. However, since wind generation is variable, wind power plants are unable to supply capacity services to assist with grid reliability or earn additional revenue associated with those services like most other power plants.

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Hawaii’s Big Island integrates renewable energy:

Saft’s Li-ion technology

Saft’s two lithium-ion (Li-ion) Intensium® Max 20E containerized energy storage systems (ESS) provide Hawaii Electric Light Company (HELCO) with the technology required for the Big Island to integrate an even greater amount of renewable resources with its grid. While the state of Hawaii is well placed to generate energy from natural sources, it historically has a high dependence on oil. It is targeting 40% of its energy to come from renewables by 2030, which it will achieve partly through intermittent sources such as solar and wind power.

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Improving Grid Stability and Integrating Wind Energy:

Younicos Battery Park

Duke Energy is using Younicos controls technology to manage operations for a 36 megawatt Battery Energy Storage System (BESS) at the site of Duke Energy’s 153 MW Notrees wind farm in West Texas. The Notrees BESS, funded in part by a U.S. Department of Energy Smart Grid award, was constructed by Duke Energy in 2012, and is the largest wind-integrated storage resource in North America. The integrated facility at Notrees provides environmentally friendly and flexible capacity to the Electric Reliability Council of Texas (ERCOT), which operates the grid and manages about 75% of the deregulated market in the state. The BESS is in a 20,000-square-foot building adjacent to the wind farm substation. It is tied in at distribution-level to the wind farm’s 34.5kV system, and connects to the ERCOT grid through the same point of interconnect as the wind farm.

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Increasing Revenues While Reducing Reserves:

Younicos Battery Park

The Maui Electric Company (MECO) owns and operates the electric grid and most of the generation assets on the island of Maui, Hawaii. The island has a peak load of 200 megawatt (MW) and a minimum load of 85 MW, with available firm generation of approximately 268 MW. Most of this generation is fueled by various forms of imported oil. Prior to 2012, the 30 MW Kaheawa Wind Power I (KWP I) project was the only operating wind farm on Maui. However, adding the KWP II (21 MW) and Auwahi (21 MW) wind farms in 2012 increased available wind power capacity to 72 MW, or 36 percent of the island’s peak demand.

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Intelligence for Europe's Biggest Storage Project:

Leighton Buzzard Battery Park (UK)

This Smarter Network Storage (SNS) project aims to carry out a range of technical and commercial innovations to tackle the challenges associated with the low-carbon transition and facilitate the economic adoption of storage. It is differentiated from other LCNF electrical storage projects by its demonstration of storage across multiple parts of the electricity system, outside the boundaries of the distribution network.

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Long-Duration Energy Storage on a Grid Scale:

Highview Power Storage LAES

Liquid Air Energy Storage (LAES) is sometimes referred to as Cryogenic Energy Storage (CES). The word “cryogenic” refers to a gas in a liquid state at very low temperatures. The working fluid is Liquefied Air or Liquid Nitrogen (78% of air). The systems share similar performance characteristics to pumped hydro and can harness industrial low-grade waste heat/waste cold from co-located processes, converting it to power. Size range extends from around 5MW/15MWh to >50MW/250MWh and with capacity and energy being de-coupled, the systems are very well suited to long duration applications.

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Making Batteries a Business:

Schwerin Battery Park

gas nationally, it also operates a regional distribution grid in western Mecklenburg, northern Brandenburg and Lower Saxony through its subsidiary WEMAG Netz GmbH. WEMAGs’ wind-swept grid already has an installed renewable generation capacity of more than 800 megawatt (MW). In 2014 these assets generated more than 100 percent of the energy volume distributed to consumers in the 8,600 km² grid area.

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Participating in New Markets Through Innovative Storage Solutions:

Younicos Battery Park

In 2013, a major solar farm was installed in Texas. OCI Solar Power decided to look at incorporating energy storage into the mix, and turned to Younicos to launch its first energy storage initiative. The customer wanted to install the storage system alongside its solar farm, taking advantage of existing equipment and interconnection facilities. To preserve the versatility of the system, it was important to select a chemistry that could reliably participate in the markets for energy storage today, namely Fast-Frequency-Regulation-Service (FRRS). The team selected the LG Chem JP1 batteries.

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Peak Shaving and Demand Charge Avoidance:

Prudent Energy Vanadium Redox Battery Energy Storage System (VRB-ESS®)

Gills Onions operates one of the largest, most innovative and sustainable fresh-cut onion processing plants in the world. Its Advanced Energy Recovery System (AERS) that went into operation in July 2009 converts all of the plant’s daily onion waste into a combination of renewable energy and cattle feed. The result is increased energy independence, elimination of a significant waste stream, reduced operational costs and a smaller carbon footprint.

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Peak Shaving to Reduce Energy Costs:

EaglePicher Power Pyramid™ Hybrid Battery

The Power Pyramid ™ system provides seamless power to the load via multiple input sources. In this demonstration project, the input sources will include 10 kW wind turbine, 20 kW solar comprised of multiple solar panels and multi-tier battery storage comprised of multiple electro-chemistries.

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Providing 100% Renewable Power to Large Residence:

Protected Kona Coast

In 2014, Aquion Energy completed installation of a 1 MWh battery system as part of an off-grid solar microgrid at Bakken Hale on the Island of Hawaii. Bakken Hale, a private residential estate, is located along the environmentally sensitive Kona Coast and cannot be connected to the grid. The Aquion battery system stores energy generated from a large on-site solar installation and enables Bakken Hale to operate entirely from self-generated solar power.

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S&C Electric Company PureWave® Storage Management System

Helps Reduce the NOx Emissions on Catalina Island, California

Catalina Island—a historic landmark 22 miles off the coast of Long Beach, California—has a population of approximately 3,700 people. There’s no utility tie to the mainland. The island microgrid has a peak load of 5 MW which is served by Southern California Edison (SCE) through a combination of six diesel generators and 1.4 MW of micro-turbines. The diesel generators were deemed to be high emitters of mono-nitrogen oxide (NOx) gases by the South Coast Air Quality Management District. To mitigate these smog causing emissions, SCE installed emissions control systems which convert the gases into water. But the catalyst for this conversion is only effective at a specific temperature range, which is reached when the generators are run above 80% load. SCE needed a solution that would allow the generators to run more efficiently, and thus reduce NOx emissions on the island.

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S&C Electric Company:

Canada’s First Utility-Scale Energy Storage System Islands Remote Town During Outages

S&C’s solution includes a 1-MW NGK sodium-sulfur (NaS) battery and an S&C PureWave® Storage Management System (SMS), which controls battery charging and discharging. It also includes S&C’s IntelliRupter® PulseCloser for fault detection, S&C’s System VI™ Switchgear, and S&C’s IntelliTeam® SG Automatic Restoration System for peak shaving and transitions between the battery and grid. S&C SpeedNet™ Radios provide fast, two-way communication to help speed restoration.

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S&C Electric Company:

First Wind Energy Storage Application in the U.S.

Xcel Energy—a major wind energy supplier—wanted to maximize the value of the renewable energy generated by the turbines at their Minwind Energy wind farm, in Beaver Creek, Minnesota. Part of Xcel Energy’s Smart Grid strategy involves testing emerging technologies and energy storage devices, which they believe are a key to expanding the use of renewable energy. To this end, they contracted with S&C to furnish and install an S&C Smart Grid Storage Management System.

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S&C Electric Company:

PureWave® Storage Management System Fortifies California Jail’s Microgrid 

S&C engineered and commissioned a highly reliable energy storage solution. They supplied and integrated a 2-MW PureWave® Storage Management System (SMS) into the jail’s microgrid. Originally engineered by S&C for a sodiumsulfur (NaS) battery, the system was re-engineered for a 2-MW/4-MWh lithium-ion battery by S&C’s p oject team, which coordinated with both battery suppliers to ensure proper operation of the system. S&C provided engineering services and project management for the PureWave SMS and battery installation. 

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S&C’s Energy Storage Solution:

Improves Power Quality in Australia’s Outback 

Electricity utility Ergon Energy was looking to improve power quality on its Single Wire Earth Return (SWER) lines, which were developed a century ago to bring power to remote parts of Australia and New Zealand. A single SWER line may stretch for hundreds of kilometers, with distribution transformers positioned at intervals along its length. The primary purpose of the SWER schemes was to accommodate basic domestic and farm loads. 

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Saft Li-ion batteries:

Gran Canaria’s STORE project integrate renewables 

Installing Saft’s energy storage system (ESS) on Gran Canaria is an ideal opportunity to evaluate the technical and economic viability of innovative solutions by making reserves of energy available in isolated locations, distribution substations and for energy arbitrage. Endesa, part of the Enel Group and Spain’s largest utility, operates two, large thermal power plants, as well as the transmission and distribution network on the island of Gran Canaria. 

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Saft Li-ion battery energy storage:

Harnesses wind power in Saskatchewan, Canada 

Saft’s successes in integrating energy storage systems (ESS) with renewable energy installations provide the perfect foundation for the Cowessess First Nation (CFN) project to demonstrate the benefits of lithium-ion (Li-ion) energy storage in enhancing the value of wind energy. In 2012, CFN was selected as one of 20 Clean Energy Fund (CEF) projects to receive funding from various Canadian government bodies to support the development of the High Wind and Storage Project 

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Saft Li-ion energy storage:

Smooths grid integration for Acciona Energia’s large PV power plant 

The Innovative Li-ion System (ILIS) project demonstrates the technical and financial benefits of using containerized energy storage, conversion and management systems to provide grid ancillary services and power management to smooth plant output. Saft deployed a turnkey Intensium® Max ESS with Li-ion storage technology characterized by long life, high energy-efficiency and zero maintenance. The ESS is rated for 730V, 1MW and 560kWh energy storage capacity. Its adaptability allows for easy scaling as operational needs change, and has a control and communication interface with main plant control center. 

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Saft Li-ion technology:

Plays a key role in E.ON’s innovative smart grid for Pellworm Island 

Saft’s premium lithium-ion (Li-ion) technology proves ideal for the Smart Region Pellworm project. This project allows Pellworm Island to increase its energy autonomy through enhanced integration of renewable resources into an already congested distribution grid. It will enable a higher level of self-consumption, flexible load management and improved control technology. The island located off the North Sea coast of Germany generates electricity from wind, solar photovoltaic and combined heat and power, yet still relies on subsea cables to connect to the mainland grid. 

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Saft’s Li-ion batteries:

Help save 10% on energy bills with train braking 

Saft’s premium lithium-ion (Li-ion) technology was an ideal solution for Southeastern Pennsylvania Transportation Authority’s (SEPTA) challenge to capture energy from braking trains. A first-of-its-kind endeavor, turns train brakes into generators delivering a 10 percent savings on energy bills. SEPTA runs the public transport system for the city of Philadelphia and its surrounding area, serving 3.9 million. SEPTA was looking for a way to both make the most of its operating budget and boost its green credentials. 

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Saft’s Synerion®

24M medium-power Li-ion batteries help New York City grid become smarter 

Saft’s lithium-ion (Li-ion) energy storage systems (ESS) provide Green Charge Networks (GCN) with the resources to install and operate a network of Smart Storage and Generation Units to overcome peaks in demand and communicate directly with Consolidated Edison (ConEd). ConEd operates one of the largest, most complex and reliable electric power systems in the world, including 130,000 miles of underground and overhead cables. The electrical infrastructure in New York is under great pressure, and ConEd is very limited in the upgrades it can make since underground conduits have little to no physical space for additional cabling. ConEd was tasked with identifying, developing and testing new technologies within the electric delivery system to help build a smarter, more efficient grid. 

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SMUD and Sunverge:

Demonstrate the Potential of Aggregated Distributed Energy Storage & Solar 

Forward-thinking utilities like Sacramento Municipal Utility District (SMUD) are searching for technology solutions to meet ever-increasing demands for reliable power and grid optimization. With the Sunverge Solar Integration platform, SMUD and Pacific Housing successfully demonstrated a wide range of these benefits at scale. 

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Solar PV-Storage:

Lanai Sustainability Research Dynamic Power Resource (DPR®) Energy Storage 

Lanai Sustainability Research constructed the 1.2 MW La Ola PV solar farm to operate on Lanai’s 4 MW grid with the objective to provide clean power to the island’s residents and resorts. Upon installation, however, the solar farm represented 30% of the island’s peak generation.  

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Sunverge Energy Storage:

Helps Glasgow Electric Plant Board Meet Demand and Increase Load Factor

The Glasgow Electric Plant Board installed Sunverge energy storage units in 165 existing homes in Glasgow, KY (pop. 14,000). The devices capture power from the electric grid when demand and cost are lower, and release that power to customers when demand and costs are high, reducing the need to supply additional power from traditional generating plants. Glasgow EPB was faced with demand charges from Tennessee Valley Authority (TVA) as part of the network. With a new tariff program in January 2016, every resident would then pay their portion of the demand charges each month, factoring in the 5 highest 30-minute interval in the month as demand response (DR) events.