North East Arnhem Land

LHAC: 6 Aboriginal Homeland Communities

Solar Hybrid

Containerised Solar Diesel Hybrid System optimisation and design for 8 Aboriginal homeland communities in North East Arnhem Land and Kakadu.

Key Achievements:

  • Working with Laynhapuy (Arnhem Land) and Gundjeihmi (Kakadu)Aboriginal corporations on the design and tender specification of remote solar diesel hybrid power systems.
  • Projected Power usage profiles were generated based on limited data using extrapolating from communities with more data available, accounting for seasonal variation and from collaboration with clients on the ground.
  • PVsyst analysis and simulations to size appropriate solar hybrid systems: arrays, batteries and generator use for each site, taking into account community goals to reduce diesel dependency and save money in areas where diesel generation is very expensive compared to solar power.
  • Feasibility Assessments and detailed tender design and specification.


Technical design file of a solar and smart energy system.

Project Scope

  • Electrical load modelling from existing diesel usage data, population patterns and known electrical loads;
  • PVsyst standalone power system modelling & system sizing;
  • Battery performance/ROI analysis;
  • Detailed design and documentation of containerised solar diesel battery hybrid systems;
  • Tender specification, documentation and tender evaluation;
  • Project management

Project Details

  • Containerised Solar Diesel Hybrid Systems for 6 Aboriginal homeland communities in North East Arnhem Land.
  • The homeland communities are currently supplied solely on diesel generators.
  • The project aim is to decrease diesel usage by 95%, and minimise diesel usage between 11pm and 7am to decrease noise levels.
  • Off grid hybrid systems comprise ground mount solar PV arrays between 80kW and 230kW with a total project capacity of 800kW.
  • Autonomous hybrid control systems, for the batteries, solar arrays and existing diesel gensets.
  • The solar array installation conducted independently by LHAC solar experienced electricians and staff with Enhar providing module, mounting and electrical specifications for these works.
  • Containerised enclosure for batteries, inverters and controls delivered to site.
A man working on electrical schematics at an ergonomic desk
A man working on solar panels on a roof

Project Challenges

  • Ensuring that the majority of system construction can be completed off site to minimise expensive travel and onsite work.
  • Extraordinary numbers of battery chemistries and controls systems, various system suppliers and conflicting information regarding battery performance.
  • Remote area logistics for both installation, ongoing performance and maintenence of the asset.
  • Risk/project management requirements and difficulties associated with a remote region of Northern Australia.

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