supports residential tiered、C&I TOU vs flat tariff，quickly calculate monthly bill from consumption。free、no registration required。
residential tiered（example）：using the common three-tier structure as an example，monthly consumption ≤2160 kWh at 0.538 yuan、2160–4800 at 0.588 yuan、>4800 at 0.838 yuan（varies by location，adjust to local tariffs）。C&I peak-valley：peak/flat/sum each period energy times its tariff。flat tariff：consumption×unit price。
residents can applytime-of-use (TOU) peak-valley tariff，move the washing machine、shift charging etc. to the night valley period；commercial and industrial can combine withstoragecharge during the valley period、peak-period discharge，further dilute electricity cost。