Case Studies

Real results. real possibilities.

Reducing Diesel Costs for Remote Irrigation in Western Australia

  • Location: Western Australia — Remote Irrigation Infrastructure
  • System Details: 105 kWp solar PV with 482 kWh battery storage powering a 37 kW continuous bore pump load
  • Impact: $199,655 annual savings, ~70% reduction in diesel use, 2.2–2.3 year payback period

Modular solar and battery storage designed to reduce diesel reliance for remote irrigation operations in Western Australia, with projected diesel savings of approximately 70%.

Location: Western Australia — Remote Irrigation Infrastructure

‍System Deployed: 2 × PHNXX Integrated Power Modules

‍System: S35B241+S70B241 (105kWp Solar · 482kWh BESS)

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The Numbers

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Solar Rating: 105 kWp

‍Battery Storage: 482 kWh BESS

‍Load: 37 kW irrigation pump

‍Renewable Cover: ~70% of 24/7 load

‍Annual Diesel Savings: $199,655

‍Payback Period: 2.2–2.3 years

‍System Lifespan: 30 years

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The Challenge

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Reliable irrigation in remote Western Australia depends on uninterrupted power. Running a 37kW bore pump around the clock consumes approximately 888kWh of energy per day.

With no grid access, this load was met entirely by diesel generation. At WA's prevailing diesel price of $2.20 per litre, daily diesel consumption reached 355 litres per day. That equates to a daily fuel cost of $781 and an annual diesel expenditure of $285,065, before accounting for fuel delivery logistics, generator maintenance, or exposure to fuel price increases.

For a remote operation, the cost and complexity of diesel dependency compounds over time. Fuel delivery delays create operational risk. Generator downtime creates irrigation gaps. And with diesel prices subject to ongoing volatility, the annual cost is unpredictable and rising.

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The Solution

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Two PHNXX Integrated Power Modules replace diesel generation for the operation, delivering 105kWp of solar generation paired with 482kWh of battery storage for continuous 24/7 pump operation.

System configuration:

  • 2 × PHNXX Integrated Power Modules
  • 105kWp combined solar generation
  • 482kWh combined battery storage (BESS)
  • Integrated Energy Management System for optimised solar and battery cycling
  • 37kW continuous pump load

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Energy Coverage

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Peak sun hours assumed (WA): 5.5 hrs/day

‍Renewable share of 24/7 load: ~70%

‍Diesel displaced — daily: 248 litres

‍Daily savings @ $2.20/L: $547

‍Annual savings @ $2.20/L: $199,655

The system covers approximately 70% of the 24/7 pump load from renewable energy. The remaining 30% is met by reduced diesel generation, retained as backup for extended low-generation periods.

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The Results

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$199,655 Annual diesel savings at $2.20/L

2.2–2.3 years Payback period — against a 30-year system lifespan

248L Diesel displaced per day

~70% Renewable share of continuous pump load

At $199,655 in annual diesel savings, the system cost is recovered in approximately 2.2–2.3 years — against a 30-year system lifespan. Every year beyond payback is pure operating cost reduction.

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Why PHNXX

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No Grid Required Fully self-contained — no grid connection, no infrastructure upgrades, no waiting on utilities.

Uninterrupted Irrigation Power Battery storage keeps irrigation running on schedule — not subject to weather or fuel delays.

Deploy in Days Pre-assembled before leaving the factory. Minimal groundwork, no construction delays.

Modular and Scalable Add modules as your operation grows — no system redesign required.

Remote Monitoring Integrated EMS provides real-time visibility of energy generation, battery state, and diesel usage from anywhere.

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Running a remote irrigation operation on diesel? PHNXX can model your site's savings potential before you commit. Get in touch.

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