Regulatory deferral account
From ACT Wiki
The balance of any expense (or income) account that would not be recognised as an asset or a liability in accordance with Financial Standards, but qualifies for deferral because it is included, or is expected to be included, by a rate regulator in establishing the rate(s) that can be charged to customers
Rate regulations allow the supplier to recover specified costs and other amounts through the prices charged to customers. To protect the interests of customers, rate regulation may defer the recovery of these amounts in order to reduce price volatility.
The supplier usually keeps track of these deferred amounts in separate regulatory deferral accounts until they are recovered through future sales of the regulated goods or services.