Josh's Battery – a more even relationship with the grid | Renewable Energy and Environmental Sustainability

Sustainable energy systems for the future

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Table 4

Proposed modelling parameters and variables.

	Value	Comment
Variables
DESS storage capacity	10 kWh	Existing
PV array size	3 kWp	Existing
PV inverter size	2.5 kW	Existing
Load factor	1	No adjustment of load

Parameters
Maximum depth of discharge	95%	As set in real system
Discharge efficiency	95%	Calculated from data set^a
Maximum discharge rate	9 kW	Specification
Charging efficiency	95%	Calculated from data set^a
DESS parasitic load	182 W continuous	Established to create best match to observations

The observed efficiency is a 90% “round trip” efficiency. The charge/discharge efficiencies are set to give this combined result.

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