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Case Study: Off-grid cattle farm
Energy Storage Solutions
Alberto Tubella Australia Asia Pacific Manager [email protected]
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Livestock farms for dairy
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170,000€/year
Farm – charge profile
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EXPECTED OUTCOME
- 52% OF POWER NEEDS
- 89,000 €/year
PROPOSAL
- PV: 380 kWp
- BATTERY STORAGE: 172 kWh
COST OF
COMPONENTS
PERFORMANCE OF
EQUIPMENT
PHYSICAL SPACE
FINANCIAL CAPABILITY
Criteria
Engineering decisions
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Consumption/Production on a December day – All Panels
Solar Energy kWh – All Panels Consumption kWh
Consumption/Production on a June day – All Panels
Solar Energy kWh – All Panels Consumption kWh
Solar system Generation
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C-RATE: 1C TEMPERATURE RANGE: -10ºC -50ºC HUMIDITY: 80% EFFICIENCY: 98% CYCLES: 6,000 SAFETY: No risk of explosion / inflammation SPACE CONSTRAINTS: Yes. Best energy density.
Battery requirements
CAPACITY: Initially, 172 kWh …
… but expandable
VOLTAGE: 480 Vdc (inverter related)
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String of 24 eBicks in parallel (206 kWh)
eBick Module: 48V 8,6 kWh
Batteries – Base Module
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LFP No danger of thermal runaway or fire No toxic elements No ventilation required No cooling required No safety monitoring equipment required Able to withstand high temperature environments
Battery Chemistry – Density vs Security
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Batteries – Solution to voltage (and space)
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Communications: CAN BUS or MOD BUS Protocols Temperatures: -10ºC -55ºC Cyclability: More than 6,000 cycles (1C, 85% DoD, 20ºC) Installation: Plug & Play Internal connections preassembled External connections: 1 Energy connector 1 Communications cable Protections: Overcharge Over discharge Short-circuit Over-current Over-temperature Passive balancing
Batteries – Additional points
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Expected Consumption and Production
Monthly consumption of kWh
Direct consumption from panels + battery (kWh)
Direct consumption from panels
January February March April May June July August September October November December
What about the savings?
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Batteries – Solution to scalability
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Company
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