Hornsdale Wind Farm Battery Energy Storage System


The 100MW Hornsdale Battery Energy Storage System will be the world’s largest lithium ion battery installation.

Installed adjacent to the Hornsdale Wind Farm in the mid-north of South Australia, the battery system will charge using renewable energy from the Hornsdale Wind Farm and then deliver electricity during peak hours to help maintain the reliable operation of South Australia’s electrical infrastructure.

We designed and constructed the battery energy storage yard and the 275/33kV substation.

The Hornsdale Wind Farm BESS project included:

  • The construction of the battery energy storage yard, including earthworks and foundations
  • Installation of Tesla battery power packs and inverters
  • Installation and commissioning of 33 x 33kV step up transformers
  • Supply and installation of 33kV MV cables linking the battery energy storage system to the new 275/33kV substation located within 400m
  • Construction and commissioning of the new 275/33kV substation

Wandoan South Battery Energy Storage System 132/33kV Substation Energisation

The objectives of the project included:
  1. Provide a BESS capable of generating a net 100 MW output at a power factor of 0.93, in accordance with the National Electricity Rules (NER) and approved Generator Performance Standards (GPS), into the 132 kV network at the Connection Point to Powerlink’s Wandoan South Substation;
  2. Provide energy storage discharge capacity of 150 MWh at the Connection Point;
  3. Participate in the wholesale energy market;
  4. Provide frequency control ancillary services (FCAS);
  5. Provide reactive power and voltage control at the 132 kV Connection Point bus.

The Project includes battery systems, power conversion systems, step-up transformer(s), 132 kV Substation, control systems and all other electrical, civil, mechanical and auxiliary plant works necessary for a fully functioning BESS installation. The Project is connected to the Powerlink network via a 132kV underground transmission cable provided by Powerlink.

CPP was engaged by Doosan GridTech Inc and was responsible for the successful design, construction and commissioning of the following;

132/33kV Substation design and construction

132 kV Equipment:

  • Surge arresters
  • Voltage transformers
  • Current transformers
  • Earth switch
  • Circuit breaker
  • 132 kV underground line terminating structure
  • Protection cabinet for 132 kV Circuit Breaker
  • Circuit Breaker Control Panel for 132kV Yard including RTU for monitoring/control

33kV Transformer side surge arrestors

33kV switchroom building:

  • 1 x incomer panel 2500A
  • 5 X feeder panel 1250A
  • 1 x VT
  • 1 x busbar earth switch
  • 12 x protection relays
  • SCADA System and associated testing and commissioning
  • UPS and DC system (if required) to be 10 hour rated
  • Fire Suppression System in BESS

Electrical earthing for substation, bonding of BESS earth grid and coordination of earthing to Wandoan South Powerlink Substation

NER (Neutral Earthing Resistor)

Installation of Power Quality Meters, 1 x at 132kV level, 1 x at 33kV incomer level and 3 x 33kV outgoing circuits

33kV cabling (PCC Transformer to 33kV Switchboard; supply, install and termination of 33kV cable onto switchboard by others)

All trenching needed for the substation power, control and communication cables

Free issued equipment:

  • Main Power Transformer
  • Plant Control Panels x 2