ELECTRIFICATION

Plan EV charging with voltage, load and capacity in one model

Modern EV chargers are predominantly power-electronic loads. Within their permitted input range, reducing voltage does not normally reduce the energy required to charge a vehicle. The opportunity is broader: manage voltage-dependent building load, protect minimum-voltage margin and coordinate charging controls so existing electrical capacity is used intelligently

A capacity-planning sequence
  • Confirm transformer, switchboard, feeder and contractual constraints.
  • Model unmanaged and managed charging against vehicle dwell time and required energy.
  • Measure existing building load and estimate the voltage-dependent share.
  • Assess the achievable voltage strategy without compromising charger or remote-load requirements.
  • Coordinate VO, charger load management, BMS, solar PV and batteries.
  • Commission worst credible combinations and retain expansion margin.
Potential project value

Where site evidence supports it, VO may reduce the coincident demand of voltage-responsive existing loads and contribute to headroom for electrification. The result must be calculated at the relevant electrical boundary and should not be presented as charger-energy savings.

Deliverables

A defensible study produces the load model, voltage envelope, capacity constraint, control responsibilities, expansion assumptions, protection review and commissioning tests.

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