Market Segment:  Renewable Energy     

The Background

In early 2017, EPSA was engaged by Joule Energy in their partnership with Northern Adelaide Waste Management Authority (NAWMA) on an innovative first-of-its-kind project to combine solar and methane gas in an energy production farm. EPSA provided a turnkey solution for the 1.15MW(ac) PV solar plant providing engineering, design, construction and commissioning..

The Power

A key feature of the solar plant control is the dynamic reactive power control – since this solar plant is exporting to the grid, the grid voltage is affected with higher export values. To counter the ever growing problem of grid voltage stability, the solar plant is able to dynamically change the output power factor to import or export 100 per cent of the plant’s output in reactive power in a trade-off for active power. This means that the plant can help stabilise the local grid voltage throughout the day.

The Product

The PV solar modules are arranged into 46 mini power blocks each feeding a dedicated 25kW (SMA) inverter – the strings are then split into three separate arrays, with AC output from each collected to supply the EPSA-supplied HV transformer kiosk. The kiosk transforms the voltage to 11,000V AC for supply to the grid via the client-operated power station.
Control of the plant is achieved using an optical fibre network that controls each inverter via an EPSA-developed control system, which relays the information back and forth to each of the 46 inverters. The controller features a web-connected online portal to provide the client with up-to-date information on the solar plant status including current plant output, daily yield and alarms. 


Energy Power Systems Australia (EPSA) is Australia’s specialised Cat® engine dealer, supplying Australia, Papua New Guinea and the Solomon Islands with the world’s finest power systems for any application, from marine propulsion to industrial power, electric power generation, oil and gas drilling and offshore production. With an extensive model range, EPSA can configure a solution to meet the needs of any application using a choice of diesel or gas engines.

EPSA also has a national fleet of rental generators, air compressors and temperature control units. Rent the latest technology and products with no maintenance and storage costs. Rent for a day or however long you need with a quick response anywhere in Australia.

EPSA is also a solutions provider, offering design, engineering, procurement and construction for turnkey projects of all sizes and across a broad range of applications.

EPSA’s network of offices across Australia and PNG delivers you technically superior Cat engines with unmatched engineering support, technical advice and after sales support.

Caterpillar® is your guarantee of ongoing dependability, reliability and efficiency.

Supplying Australia with the world’s best power systems.