Maturity status
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Supported domains
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HEMS
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Overview
When Program Charge mode is active, Tariff-Timer may temporarily delay EV charging when current electricity prices are higher than forecasted future charging periods.
During this time, the vehicle can remain plugged in without actively charging while the optimization waits for a lower-cost charging window.
The optimization continuously evaluates:
forecasted electricity prices,
charging constraints,
and the configured departure target & desired SoC
to determine the most cost-efficient charging schedule while still ensuring the desired departure SOC is reached whenever technically feasible.
User Interface & Logic Transparency
To help users understand why EV charging is currently delayed, the XENON UI provides transparent optimization insights.
The insight includes:
the delay period,
the current electricity price causing the charging delay,
and the planned lower-price charging window scheduled by the optimization.
This helps users understand that the charging delay is intentional and economically optimized.
Example Tariff-Timer decision insight:
