Energy storage systems

Energy storage system can actually store energy and use the stored energy whenever the need arises.
As the need for clean energy arises, the need to replace current existing power plants have become a global issue.
NEED OF ENERGY STORAGE
Supply and Demand mismatch
Utilize storage for peak periods.
Reliable power supply.
Reduce the need for new generation capacity.
Electrical vehicles
Emergency support.
Energy storage systems are the set of methods and technologies used to store various forms of energy.
There are many different forms of energy storage
Batteries: a range of electrochemical storage solutions, including advanced chemistry batteries, flow batteries, and capacitors
Mechanical Storage: other innovative technologies to harness kinetic or gravitational energy to store electricity
Compressed Air: utilize compressed air to create energy reserves. Electricity can be converted into hydrogen by electrolysis. The hydrogen can be then stored and eventually re-electrified. 
Pumped hydro-power: creates energy reserves by using gravity and the manipulation of water elevation
Thermal: capturing heat or cold to create energy
The choice of energy storage technology is typically dictated by application, economics, integration within the system, and the availability of resources.

1. PREPARED BY:
GAGANDEEPKAUR
ASSISTANT PROFESSOR
CCAE, CHITKARA UNIVERSITY

2. INTRODUCTION
➢Itisparticularlyimportantforthedevelopmentandintegrationofrenewableenergy
technologies.Somerenewableenergysourceshaveintermittentgenerationprofiles,which
meansthatelectricityisonlyproducedwhenthesunisshiningorwhenthewindisblowing.This
createssupplyanddemanddiscrepanciesbecauseconsumersmaystillrequireelectricitywhen
renewablessourcesarenotproducing.
➢Energystorageenablesalower-costgeneratingsourcetoproduceelectricityatadifferentpoint
intimetobestoredandthenusedtomeettimesofpeakdemand.This‘flexibility'hasthe
potentialtotransformhowweproduceandconsumeelectricity.

3. ENERGY STORAGE SYSTEM
➢Energystoragesystemcanactuallystoreenergyandusethestoredenergywhenevertheneed
arises.
➢Astheneedforcleanenergyarises,theneedtoreplacecurrentexistingpowerplantshave
becomeaglobalissue.

4. NEED OF ENERGY STORAGE
➢SupplyandDemandmismatch
➢Utilizestorageforpeakperiods.
➢Reliablepowersupply.
➢Reducetheneedfornewgenerationcapacity.
➢Electricalvehicles
➢Emergencysupport.

5. TYPES OF ENERGY STORAGE
➢Energystoragesystemsarethesetofmethodsandtechnologiesusedtostorevariousformsofenergy.
➢Therearemanydifferentformsofenergystorage
•Batteries:arangeofelectrochemicalstoragesolutions,includingadvancedchemistrybatteries,flow
batteries,andcapacitors
•MechanicalStorage:otherinnovativetechnologiestoharnesskineticorgravitationalenergytostore
electricity
•CompressedAir:utilizecompressedairtocreateenergyreserves.Electricitycanbeconvertedinto
hydrogenbyelectrolysis.Thehydrogencanbethenstoredandeventuallyre-electrified.
•Pumpedhydro-power:createsenergyreservesbyusinggravityandthemanipulationofwaterelevation
•Thermal:capturingheatorcoldtocreateenergy
➢Thechoiceofenergystoragetechnologyistypicallydictatedbyapplication,economics,integrationwithin
thesystem,andtheavailabilityofresources.

6. BATTERY ENERGY STORAGE SYSTEMS (BESS)
➢BESSforPVsystems:DC/DCconvertersareused
ProvidingDClinkvoltagetotheinverterfrom
battery.
➢BESSforUtility:BidirectionalInverter(DC/AC
orAC/DC)areused.DC/ACconversiontoAC
gridandAC/DCconversiontochargingbattery
Efficiency of BESS is between 65 to 95% depending upon the type of battery.
LimitedLifecycle.

7. HYDROGEN ENERGY STORAGE SYSTEMS (HESS)
➢Hydrogenasfuel
➢Electrolyser:DecomposingwatertoHandO2thenHstoredinahighpressuretankasfuelstorage
➢Fuelcell:generatingDCpowerbyreactionofHandO2andWaterorsteamreleasedaswaste
➢Hydrogenabletobetransportedviagaspipes
➢OverallHESSaround30%efficiencywhichismuchlowerthanBESS

8. PUMPED HYDRO STORAGE (PHS)
➢Employsoffpeakelectricitytopumpwaterto
areservoiroflowelevationtohigherelevation
andrundowntohydroturbinetogenerate
electricity..
➢Canbesizedupto1GW.
➢Efficiency80-85%.
➢Life50-60years.
➢Sitingissue
➢Expansivetobuild.

9. PUMPED HYDRO STORAGE PLANTS IN INDIA

10. COMPRESSED AIR ENERGY SYSTEM (CAES)
➢Airiscompressedadstoredandislaterusedingasturbinestations.
➢Canbesizedunderground400MW.Aboveground3-50MW.
➢Efficiency70%.
➢Life30years.
➢Sitingissue.
➢Expansivetobuild.

11. MECHANICAL ENERGY STORAGE SYSTEM (MESS)
➢Flywheels
➢Energyisstoredintheformofmechanical
energy.
➢Life20years.
➢Efficiency70-80%
➢Asmostenergyislostduetofrictionflywheels
areoperatedinenclosedvacuumspace.
➢Lowenvironmentalimpact.
➢Suitableforshorterduration
➢Highcost.
➢Addmoreweighttocars.

12. STRATEGIC APPROACH

13. BARRIERS

14. CONCLUSIONS
➢ESSforbalancinggridisalongtermsolution.
➢Researchcentersshouldbeestablishedtocarryouttheresearchandfortestinginthis
field.
➢Countrieswhohavenotyetexploredtheirrenewableenergypotentialshouldexplore
potentialofstorageinparallel.
➢Properpoliciesshouldbedeveloped.
➢Explorepublicprivatepartnership

15. “Energy earns or simply burns, choice is yours.
Energy misused cannot be excused.”