본문 바로가기

05Improving the Quality of Electricity

Steag Project in Germany,
the World’s Largest of Its Kind

Improving the Quality of Electricity
with Energy Storage Technology

Improving the Quality of Electricity
with Energy Storage Technology

Electricity is generally regarded as a form of energy with a very short lifespan, consumed almost immediately. Conventional power systems are notoriously inefficient, allowing significant amounts of electricity go to waste before it can be utilized. Invention of the Energy Storage System (ESS), however, has revolutionized energy generation and consumption. ESS brings greater efficiency to the power system through storage of electricity for on-demand supply.

ESS plays a variety of roles throughout the process of electricity generation and supply. During generation and during consumption, ESS enhances the efficiency of new and renewable energy systems, such as those for wind and solar energy, where output fluctuates significantly in accordance with weather conditions. ESS also serves to provide emergency power.

Charge: Charge when grid
frequency increases, Discharge: Discharge when grid frequency decreases

Energy quality matters today

During the transmission and distribution phase, ESS helps to maintain the quality of electricity, whose demand varies from region to region, and from time to time. The frequency waves of transmission systems change accordingly, causing the quality of electricity to change in the process. Power plants and substations require a tool to aid in managing changes in the frequency waves within a certain range.

ESS here serves as an important instrument for quality stabilization. When supply exceeds demand, the frequency waves of electricity transmission rise. The transmission network can send the surplus energy to ESS to bring the frequency waves down. In the opposite scenario, the transmission network can release electricity from ESS to bring the frequency waves up.

An energy storage technology recognized by Germany, a world leader in energy

Germany is the undisputed leader of the latest energy trends worldwide, as the German government’s energy policy has steadily expanded the share of new and renewable energy in the country’s energy mix since 1970 to over 30 percent today.

There is a major energy project taking place across six states of Germany today, extending from Nordrhein-Westfalen to Saarland, which involves installing ESSs for frequency control. In this undertaking by Steag, a German power company, LG supplies ESS batteries along with Nidec. The ESSs to be installed, with an aggregate capacity of 140 MWh, make the project the largest of its kind in the world, capable of providing over 76,000 new volts, or enough energy to power 10,000 households.

LG’s ESS boasts superior energy density, which is a measure of how much energy a given unit of volume can hold.
LG has successfully raised energy density by 15 percent, from 355 Wh per liter to 410 Wh per liter, making LG’s ESS batteries more compact and more efficient. The container-type ESS used in the Steag project requires 50 percent less space than conventional ESS.

Pietro Gallone (COO of Nidec ASI Gbmh)

“It is very important for us to have a partner who is very knowledgeable in all different aspects from providing products on time to providing safe, reliable technology. For sure one of the most significant aspects for storage solutions is energy density for which, at least for the time being, LG Chem seems to beat the competitors. This was a very important factor in this project because it allowed Nidec ASI to deliver battery storage systems within a smaller footprint to match the space requirements of the project.”

  • 140MWh Battery supply

  • Deliver enough energy to supply 10,000 households per day

  • 7,600 electric vehicles can charge at the same time

Higher Density, Less Space
(50% reduced space)50%

ESS in six regions of
Germany

  • Nordrhein-Westfalen provincs
  • Saarland province

Energy storage technology for a better world

With 22 years of experience and expertise in electric cells, LG continues to lead the global ESS market. The company’s advanced energy storage technology ensures reliable supplies of quality energy across a wide range of industrial fields and daily activities, contributing to improving our quality of life.

LG is pioneering a new future with state-of-the-art technology in energy storage.

1.6GWh(As of May, 2016)

World-leading Grid-scale ESS supplier with extensive experience and
Proven reference Projects

*Cumulative amount of installed/awarded projects

  • 190MW/140MWhNRW/Saarland, Germany
  • 2210MW/20MWhReunion & Corsica, France
  • 310MW/11MWhFeldheim, Germany
  • 42MW/1MWhEisenhuettenstadt, Germany
  • 51MW/500kWhSardinia, Italy
  • 617MW/51MWhYeongyang, Korea
  • 77.5MW/44MWhIksan & Ochang, Korea
  • 884MW/30MWhKEPCO (4 Substations), Korea
  • 962MW/31MWhHokkaido, Japan
  • 104MW/16MWhYeongheung, Korea
  • 111MW/500kWhSeattle, WA
  • 128MW/32MWhTehachapi, CA
  • 1320MW/9MWhLee Dekalb, IL
  • 1418MW/6MWhMeyersdale, PA
  • 151MW/2MWhCedartown, GA
  • 190MW/140MWhNRW/Saarland, Germany
  • 2210MW/20MWhReunion & Corsica, France
  • 310MW/11MWhFeldheim, Germany
  • 42MW/1MWhEisenhuettenstadt, Germany
  • 51MW/500kWhSardinia, Italy
  • 617MW/51MWhYeongyang, Korea
  • 77.5MW/44MWhIksan & Ochang, Korea
  • 884MW/30MWhKEPCO (4 Substations), Korea
  • 962MW/31MWhHokkaido, Japan
  • 104MW/16MWhYeongheung, Korea
  • 111MW/500kWhSeattle, WA
  • 128MW/32MWhTehachapi, CA
  • 1320MW/9MWhLee Dekalb, IL
  • 1418MW/6MWhMeyersdale, PA
  • 151MW/2MWhCedartown, GA
  • redPeak Shifting/Multi Purpose
  • yellowRenewable Integration
  • grayFrequency Regulation

LG Chem

Global No1.
Li-ion Battery

Contact Us

LG Chem

ESS Partner Portal

Contact Us