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Issue 1.2
Tariffs and accounting
© Gyr
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– E470 Series 3 SMETS2 100 mm – ZCX310 – User Manual and Functional Description
17
Tariffs and accounting
17.1 Tariff structure in credit and prepayment modes
The meter holds a tariff pricing scheme to allow energy usage costs to be
calculated, displayed and notified over the HAN. In addition, a daily
standing charge may be applied.
The tariff data can be updated remotely via remote command.
A tariff scheme can be configured which becomes active at a predeter-
mined date and time. If that date is in the past, then the meter will activate
the tariff immediately. If that date is in the future the meter will activate the
tariff when that date arrives.
17.2 Energy accumulation
The meter accumulates energy in tariff registers per time-of-use (TOU) and
energy consumption.
Consumption or ‘block’ pricing is always implemented as a combination of
TOU and block pricing. The energy values accumulated in these registers
are multiplied by price information held in the price matrix to determine the
energy charge.
There is a total of 80 tariff energy registers used to determine prices.
These are made up of 48 TOU registers and 32 combined Block/TOU
registers (comprising 8 TOU rates with 4 consumption blocks per TOU
rate).
In addition to the 32 total Block/TOU registers there are 32 rising block
counters.
The total registers are never reset; they accumulate energy for the lifetime
of the meter.
The rising block counters are reset at the end of the block period.
17.2.1 Current and future tariffs
Two tariff schemes are held ‒ current and future.
The current scheme is the one currently being utilised. Future tariff
schemes are configured in the background for later use. The activation of
future tariffs is controlled by an activation date.
The future tariff scheme will be activated if the current date becomes newer
than the activation date. When activating the future tariff scheme, the
currently active tariff is overwritten and the future tariff scheme is cleared.
17.2.2 Tariff types
The meter may be configured with the following tariffs:
TOU only tariffs (up to 48 rates),
TOU with block tariffs (up to 8 rates each with up to 4 blocks).