Sichuan Chuanyou Natural Gas Technology occupies more than 100 mu inside Zigong’s high-tech industrial park. Its business scope spans CNG, LNG and petroleum-gas refuelling station construction, hydrogen production, storage and high-temperature hydrogen fuel cells, CNG vehicle retrofitting, gas-storage well technology, geothermal investment, chemical and petroleum equipment and pipeline installation, oilfield technology, and natural gas supply, transmission and city-gas services.

Electrical design for the refuelling stations focuses on the dominant loads: CNG compressors at 75–250 kW (the largest single-unit load on site), dispensers at 5–15 kW per unit, LNG submerged pumps, air compressors, dehydration units, lighting, the station control system with PLC and UPS, combustible-gas detection and fire suppression. Load calculation uses the demand-factor method, with compressor demand factors of 0.7–0.85, and supply is taken from the 10 kV utility, stepped down through box-type substations to 380/220 V. Below 6 kV, dry-type equipment and dry-type transformers are used throughout. Fire and automation loads are classified Class 2 and backed by either two independent circuits or a gas/diesel generator.