PES 1 Integrated Solar Storage System

The Muswellbrook project utilises the PES 1 model solar storage system. PES1 is a truly complete AC output fully integrated solar storage system with excellent power characteristics that is reliable, flexible, scalable and suitable for a multitude of off-grid and on-grid applications, from remote communities to facilities with high power needs.

PES1 is the conclusion of many years of development work and full scale reference deployment data to find an optimal solution using readily available tried and tested technologies in one integrated system. The system is built around our professional supervisory control and data acquisition SCADA controls which are highly reliable and use smart algorithms to optimise performance and extend battery life.

The whole system is remote monitored and controlled with a manned control room and technical support 24 hours a day. The system uses top quality maintenance free Valve Regulated Lead Acid sealed batteries combining extreme current capacity, long design life, deep cycling and inherent reliability and safety.

Battery charging and AC power is delivered through tried and tested island and grid-tied inverters that supply high quality true sinewave, low THD power. PES1 is delivered in special tempered insulated 20 foot containers, pre-configured and tested and ready to install with minimum on-site works even in hard to reach locations.


The broadcast tower is powered by a 39 kWp solar power installation using 216 kWh of batteries and has a 8 kVA diesel back-up system for emergencies. The technology – 156 solar panels, 72 BAE batteries (supplied by R+J batteries), 3 SMA inverters and a monitoring system – is mostly Made in Germany.

Communication towers are a vital – not only for entertainment, but of course also in emergency situations – it is absolutely paramount that the tower is operational 24/7. The project designers made sure that the quality of the components and operations are at the highest possible level and can ensure an uptime of 100 per cent, with the backup generator and several safety elements playing a key role.
The positioning and mounting of the PV panels too was specifically designed and adapted to these special circumstances. To ensure that the tower is absolutely operational all year long, the panels are installed at a slightly higher slope than usual to maximise solar irradiation in the winter months.
The climate too presented a challenge for the project engineers. A significant range of temperature over the year puts a strain on the hybrid power system. The technology container, which houses the battery rack, is equipped with a smart combination of a freecooling unit and an active AC to guarantee an effective temperature control to extend the lifespan of the batteries. The monitoring and controlling system, using Domat technology and Photon Energy know-how, is continuously monitoring a large number of parameters.

Germany is one of the “founding countries” when it comes to Solar Energy. The German government’s decision to switch off its nuclear power stations and instead focus on Renewable Energy lead to a boost in the development of solar energy technology in Germany. Up to date Germany has installed more than 35 GWp of Solar installations. Some federal countries already run largely on renewable energy. Paired with the reputation of German know-how and technology, the brand Renewables Made in Germany provides world-class component for energy installations around the globe. Since 2002 the German government has been closely involved in supporting the global dissemination and transfer of technologies for renewable energies, under the brand “renewables – Made in Germany”. The responsible authority, the Federal Ministry for Economic Affairs Energy, is thus making a significant contribution to international climate protection while promoting the worldwide acceptance and use of renewable energies.

Photon Energy uses the following components:

  • Solar panels: 156x 255Wp poly-Si modules supplied by Q-Cells
  • Inverters: 3x SMA Sunny Island 8.OH
  • Batteries: 72x BAE 10 PVV1500 solar batteries, 1500 Ah, 2V, 216 kWh / C10
  • Photon Energy monitoring system

Download technical data sheet

A large part of the system is designed to fit in a technology container, where the PV modules are connected to MorningStar TriStar TS-MPPT-60 solar controllers. The controllers charge three racks of BAE 10PVV1500 batteries.

Technology Container datasheet 

AC Output (load)
Nominal power 12000 W
Maximum power 5 min 18000 W
Number of phases 3
Rated output voltage 400 V
Frequency 50 Hz
Maximum efficiency 96%
Waveform True sine THD<4%
DC Input PV array
Nominal PV power 39000 Wp
Max. input voltage 150 V
Max. input current 780 A
Number of MPPT’s 13
Inputs per MPPT 1
AC Input backup generator
Nominal input power 11500 W
Number of phases 3
Rated input voltage 400 V +-15%
Frequency 50 Hz +-20%
Battery bank
Energy storage capacity 216 kWh
Batery type VRLA-GEL
Charging stages Bulk, Absorption, Float, Equalize
Protective devices
AC output short circuit Yes
AC output overload Yes
AC output overvoltage protection Class II
AC input short circuit Yes
AC input overload Yes
PV array short circuit Yes
PV array overload Yes
PV array disconnection Yes
PV array overvoltage protection Class II
Battery deep discharge Yes
Battery earth fault Yes
Overtemperature Yes
Solar irradiance sensor Yes
Wind speed sensor Yes
3G modem Yes
Ethernet Yes
RS485 Optional
Relay outputs 8
Web-based monitoring portal Yes
General data
Dimensions (L x W x H) 6055 x 2435 x 2590 mm
Gross weight 9750 kg
Operating temperature range -10°C … 45°C
Protection rating IP54 Outdoor

The electricity from the batteries is converted using three SMA Sunny Island 6.0H inverters.

The data communication is provided using SMA Sunny Remote Control, Sunny Webbox, Sunny Sensorbox components and Domat control systems. The monitoring for the PV storage system is provided by Photon Energy.

Inverters: SMA Australia
Batteries: BAE
Batteries supplied by: R+J Batteries
Monitoring: Photon Energy