30 August 2018: China lead carbon battery maker Narada will hold an inauguration ceremony for a 16MW/25MWh lead carbon energy storage project in the Leipzig area of Germany on September 14.
The system, one of five planned (Narada’s second 15MW/25MWh system is under construction in the same area), will deliver primary control reserve grid services — balancing frequency and capacity changes automatically — using advanced lead carbon technology.
The project by German energy storage firm Upside Germany, part of the Upside Group, uses advanced lead carbon batteries in the central German region.
Narada says its lead carbon batteries combine the advantages of a lead acid battery and supercapacitors. “Our lead carbon battery provides high energy density, but also high power, rapid charge and discharge and a longer cycle life.”
Marc Reimer, managing director of Upside, told BESB: “We use the battery for the sole purpose of providing primary control reserve in the ENTSO-E [European Network of Transmission System Operators] area.
“Therefore the performance of lead carbon is just perfect. It is more reliable than most plain lead acid batteries we know, it has very low maintenance requirements and it is cost efficient.”
The Langenreichenbach battery system uses two medium-voltage rings at two separate network connection points in parallel, and independently in nine inverters with 1.8MVA each, each equipped with its own frequency control.
The plant has been fully operational since July 2018 and is prequalified for the provision of primary control power. After completion of the prequalification phase, the Upside Group and Narada will operate the facility.
In the plethora of lithium ion and vanadium redox flow battery storage systems, the Narada and Upside projects are interesting, but not unique to Germany, although according to the Department of Energy’s storage data base it will be the biggest in the country.
Upside has already used lead acid batteries in a 2.2MW/2MWh system at the Alt Dabar solar park in the north-eastern region of the country, which began operations in 2016.
There is also a 1.5MW lead acid system in the same area, which was developed in 2016 for regulation reserve applications. The Energy Buffer Unit is a prototype project where Belectric’s system provided millisecond grid stability services.
This July, Narada completed a 20MW/160MWh lead carbon energy storage system in China — where it has delivered around 500MW of behind the meter system this year.
The system was deployed by State Grid Zhenjiang Power Supply Company and leased by State Grid Jiangsu Integrated Energy Service.
This power station is the key project of the State Grid Jiangsu Electric Power during peak load in summer, and it is also the largest modular pre-installed energy storage power station in China.