Energy Storage SystemsNew solutions for a new energy environment

Facilitating the integration of renewable energy

Saft can help

Saft’s Li-ion energy storage systemshave been purposefully designed tofacilitate the effective integration of bothsmall and large sized renewables, theoptimised use of transmission anddistribution assets, streamlined smartgrid management and greater optionsfor end user energy management.

With our storage systems on your side,you can de-link supply from demand, allwhile noticeably improving the qualityand reliability of the grid. Saft makes iteasier for you to successfully managethe challenges of renewables.

The increase in the quantity of electricity produced by renewable sources is creating new challenges for energy grids that are already stressed. Today’s electricity systems must balance supply and demand at any time, enable more flexible grid management and ensure optimised levels of energy efficiency.

With Saft energy storage solutions, you get…

• Easier integration of large renewable generation plants• Greater stability for transmission grids • Stress relief for loaded distribution grids• New options for local energy management

When it comes to innovative, robust and reliablebatteries, no one can match Saft. Building uponon decades of experience, Saft can offer energystorage solutions to meet power and energyneeds of any size, from kilowatts to megawatts.Our world-class technology is backed up withworld-class manufacturing facilities, includingone of the sector’s most technologically advancedlithium-ion battery factories, located inJacksonville, Florida (United States).

Energy Storage Systems – New solutions for a new energy environment2

Production Transmission Distribution Consumption

Energy & Power

RenewablesCapacity Firming

Smoothing, Shaving

High Power

Ancillary ServicesFrequency Control

Energy & Power

Load ManagementPeak Shaving

Voltage Control

Energy

Time ShiftingLocal Energy Management

Solutionsfrom kilowatts to megawatts

Saft has a wide range of battery systems to meet every on-grid energy storage need, no matterwhere or when it is needed – from grid stabilisation in electricity production, transmissionand distribution networks to local energy management in individual homes. Saft’s wideoffer of storage solutions presents benefits to actors across the entire energy supply chain.

Storage solutions for every step of the value chain

Energy Storage Systems – New solutions for a new energy environment 3

1 - 10 MW 10 - 50 MW 100 kW - 1MW 5 - 50kW

Energy Storage Systems – New solutions for a new energy environment4

Renewable energy generation becomes grid-compatible

• Smooth out the intermittent nature of renewable energy generation • Reduce ramp rates• Make energy production predictable

Wind and solar power are subject tosignificant peaks and troughs in output.Saft energy storage systems smooth outthis sort of intermittent generation andreduce ramp rates for medium and largesolar and wind power plants, ensuring astable level of power output.Our higher-energy systems also providecapacity firming, making renewableenergy a predictable component of agrid operator’s electricity mix.

The stabilisation of wind farms and solararrays results in very dynamiccharge/discharge behaviour at variabledepth-of-discharge. Saft’s Li-iontechnology has proved its suitability forsuch demanding cycling applications,offering just the right combination ofenergy and power output. Our highperformance solutions have a lifespanexceeding 10 years and can be scaled tomeet a wide range of power needs.

Two Saft Intensium® Max 20Econtainerised energy storage units arepart of a renewable energy storagesystem on the Big Island of Hawaii in the United States designed to increasethe Hawaiian grid’s ability to integratemore renewable energy. They will helpreduce output power volatility andoptimise power performance for anexpected service life of 15 years or more.

Production Transmission Distribution Consumption

Saft Intensium® Max, 1 - 10 MW ▼

Energy Storage Systems – New solutions for a new energy environment 5

A stable gridto face the challenges of tomorrow• Make immediately available synchronised reserves with no fuel consumption • Offer frequency and area regulation• Provide dynamic voltage support

Transmission and distribution grids arealready stressed by increasing powerdemands, especially during peakperiods, power flow fluctuations andother disturbances. The growingpenetration of intermittent renewableenergy sources is adding a significantnew source of instability.Saft’s high-power Li-ion modules arethe building blocks for multi-MW, kV-level energy storage solutions. Load levelling, peak shaving and othertypes of dynamic and rapid support areeasy to provide once such storage systemsare in place, enabling electricity utilities

to successfully manage the introductionof intermittent renewable resources. Our energy storage systems also offer arange of ancillary services that improvethe stability, reliability and capacity ofpower networks.

Saft high-power systems can be partof a variety of storage installationsdesigned to optimise the smoothintegration of renewable energy intothe grid, such as ABB’s DynaPeaQ®system which is helping compensatefor the intermittence of the energybeing produced by a wind farm in eastern England.

Production Transmission Distribution Consumption

A de-stressed grid allows operators to defer investments

Production Transmission Distribution Consumption

• Reduce feeder congestion during demand peaks • Provide voltage support• Enable black start and islanding

If a substation is operating close to its peakcapacity, network operators may feel forcedto build a new substation and reconfiguretheir distribution feeders, especially ifrenewables are added to the mix.Saft can make it possible to defer thesesorts of major capital investments, or eveneliminate them altogether. By installingrobust and reliable Saft energy storagesystems at strategic points in the network,Distribution Network Operators can relieve

their capacity constraints and increasetheir renewable hosting capabilities. Energy storage can represent asignificantly more cost-effective andimmediate approach to adding capacity,and can provide return on investment in as little as 2 to 3 years. Compact and easy to transport, Saftsolutions also provide additional benefitssuch as dynamic voltage support and theability for intentional islanding.

Saft solutions were a key element of the European Union GROW-DERS (Grid Reliability and Operability withDistributed Generation using FlexibleStorage) project that successfully created a transportable flexible storage system andassessment tool for distribution networkmanagement. Field tests of two 50 kW Li-ionbatteries showed the benefits of energystorage and the grid operators involved were positive about the opportunities.

Saft 230 V, 7kWh/70 kW Li-ion unit

▼

Saft, 700V, 60kWh Energy Storage Unit▼

Energy storage enables cost savings for homes and businesses

Production Transmission Distribution Consumption

Energy Storage Systems – New solutions for a new energy environment6

• Maximize local consumption of PV production• Time-shift availability of PV energy to when it is most valuable • Power critical loads even when the grid is down

More and more frequently, electricityproviders are encouraging theircustomers to adopt “storage behind themeter” schemes as a contribution to therobustness of the overall energy system.Storage behind the meter also enhancescost savings and creates a moreoptimised management of local energyproduction and consumption in homes,buildings and industrial sites.

Peak power reduction and time-shiftingare some of the ways spending can beoptimised thanks to demand-sidemanagement of energy. Residential

Saft is powering the California city ofSacramento Municipal Utility District’s(SMUD) photovoltaic (PV) storage pilotprogram at Anatolia–Ill, a high penetrationPV community. Saft’s battery systemprovides efficient energy storage so solarpower can be time-shifted to support SMUD’s“super-peak” hours from 4 p.m. to 7 p.m.Our Li-ion technology met the project’s need for 20-year battery life in a range ofdemanding environmental conditions.

Time-shifting capabilities

owners of a photovoltaic (PV) systemmight be remunerated for their surplusenergy at a higher tariff during peakdemand periods. Industrial customerscan use energy storage as a cost-effectiveapproach to peak demand reduction andan alternative to using diesel generators.

Saft’s highly modular energy storagesolutions are already playing a crucialrole in the development and roll-out ofdistributed residential and smallcommercial renewable energy solutionslike these. Our battery kits fit a widerange of user configurations and needs. Saft 48 V, 2.2 kWh Synerion® module▼

PV ProductionHousehold consumption

Li-ion: the right choice for energy storage

Energy Storage Systems – New solutions for a new energy environment 7

Beyond merely providing a Li-ion battery,Saft integrates its technology intocomplete energy storage systems thatcan include battery management,temperature management and safetyfunctions, as well as power managementand power conversion functionalities.Furthermore, Saft experts provide projectqualification and pre-testing services at the early stages of your project,turnkey installation and commissioning,and ongoing maintenance.

Don’t waste your budget on unexpectedcosts or improper components: bychoosing a full-service contract fromSaft, you benefit from a seamless andfast deployment, optimised for yourspecific application, as well as extremelyhigh levels of certainty in your project’stiming, cost and proper functionality.

Saft has over 15 years of experience using lithium-ion technology in a very wide range of industrial applications. Our Li-ion batteries offer many valuable features for energy storage systems, including:• High energy density (135 Wh/L) • Very short response time, limited only by power electronics • High power capability both in charge and discharge (800 W/L) • Excellent cycling capability • High round-trip efficiency (better than 95%) • High charge retention • Long life (20 years with daily deep cycles) • Maintenance-free and self-diagnosing• Significantly lower environmental footprint than other technologies, thanks to their high recyclability

System integration from Saft: more than just a battery, get a completely customised energy storage system

Battery

AuxiliariesTMS: Temperature Management SystemSMS: Safety Management SystemBMS: Battery Management System

Power

Services

As part of its environmentalcommitment, Saft gives priority to recycled raw materials over virgin raw materials, reduces its plants’ airand water releases year after year,minimizes water usage, reduces fossilenergy consumption and associated CO2

emissions, and ensures that itscustomers have recycling solutions for their spent batteries.

Regarding industrial nickel-basedbatteries, Saft has had partnerships for many years with collectioncompanies in most EU countries. This collection network receives anddispatches our customers’ batteries at the end of their lives to fully approvedrecycling facilities, in compliance withthe laws governing trans boundarywaste shipments.

Saft has selected a recycling processfor industrial lithium-ion cells with very high recycling efficiency.A list of our current collection pointsis available on our web site. In othercountries, Saft assists users of itsbatteries in finding environmentallysound recycling solutions. Pleasecontact your sales representativefor further information.

Saft is committed to the highest standards of environmental stewardship

Document N° 21822-2-0412Edition: April 2012Data in this document is subject to change without noticeand becomes contractual only after written confirmation.Photo credits: Saft, Fotolia.Attitudes design&communication – C189Printed on FSC paper by GMK, an Imprim’ Green member© Saft – Société par Actions Simplifiée au capital de 31 944 000 €RCS Bobigny B 383 703 873

Saft12, rue Sadi Carnot93170 Bagnolet - FranceTel. : +33 1 49 93 19 18Fax : +33 1 49 93 19 64www.saftbatteries.com