We use sales-based data to monitor average residential, commercial and industrial electricity costs — essentially total electricity sales divided by the quantity of. .
We monitor national residential electricity costs, using information about national electricity sales. This data: 1. is based on the actual volume of electricity sold and the. .
The QSDEP is an average price series based on certain assumption, which complements the sales-based electricity cost data. The QSDEP indicator: 1. monitors tariffs.
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