Peak demand events

Why was my curtailment adjusted downward?

If you have a Rate D service contract with the Winter Credit Option and the energy curtailed (curtailment) during a peak demand event exceeds 40 kilowatthours (kWh), this triggers a verification of the reference energy calculation.

Following the verification, the curtailment may be adjusted downward if the data
used to calculate the temperature adjustment reveals significant differences that
would infer that someone intentionally took action to increase the consumption
limit for the event, and therefore the credit amount.

In some cases, the curtailment may be adjusted downward even if no intentional
action was taken. This measure is designed to reflect the fair value of the curtailment. Please note that it is still possible to reach a curtailment of more than 40 kWh with this new rule.

In summary, only the temperature adjustment calculation differs from that of
previous seasons when the reference energy is being determined.

To maximize the credit on your bill, learn the five golden rules to follow to get the most out of the Hilo service during peak demand events.

5 golden rules for peak demand events

For more information about the temperature adjustment, please refer to Section 8
of the document entitled Electricity Rates 2025.