Get the price timeseries for a tariff over the requested interval. Works for both periodical and dynamic tariffs, returning one unified shape - see TariffShowResponse. properties.energyUnit and properties.timezone are only present for periodical tariffs; rates are quoted per energyUnit, and the tariff's schedule is defined in local time (timezone) even though interval/values come back in UTC.

Authorization: tariffId must be either the import or export tariff of one of the caller's sites.

Pagination: omit interval to get the most recent 7 days. With an explicit interval, the server walks backwards in 7-day pages from interval.end; pass the returned nextToken to fetch the previous page. nextToken: null means there are no more pages.