In Chengdu, the annual power supply volume is 7.958 billion Kwh. The electricity price varies according to different periods: level period, high flow period and dry season. The power supply system architecture for big power grid in Chengdu is 110 KV (powered by the state main grid) and supplies uninterruptedly to enterprises. The stability for power source is 99.89% and the Mean Time Between Breakdown (MTBB) is 50±0.2 Hz.

Items	Class of Voltage	Level Period			High Flow Period			DrySeason
Electricity for Business		Level	Peak	Valley	Level	Peak	Valley	Level	Peak	Valley
	Below 1 KV	0.7957	1.2491	0.3423	0.7957	1.2491	0.3623	0.9468	1.4909	0.4028
	1-10KV	0.7807	1.2251	0.3363	0.7807	1.2251	0.3363	0.9288	1.4621	0.3956
	Above 35-110 KV	0.7657	1.2011	0.3303	0.7657	1.2011	0.3303	0.9108	1.4333	0.3884
Electricity for common use	Below 1 KV	0.6247	0.9755	0.2739	0.6247	0.9755	0.2719	0.7416	1.1625	0.3207
	1-10 KV	0.6097	0.9515	0.2679	0.6097	0.9515	0.2679	0.7236	1.1337	0.3135
	Above 35-100 KV	0.5947	0.9275	0.2619	0.5947	0.9275	0.2619	0.7056	0.1049	0.3063