1.Project Overview
Background: Responds to “Dual Carbon” strategy & urban green transportation
Configuration: 625kW PV array + 1MWh energy storage system (upgraded from existing PV infrastructure)
Core Model: “PV generation → energy storage → nighttime bus charging” closed loop, 100% off-grid
2.Core Transformations
Energy Attribute: From “grid-dependent power sales” to “100% self-consumption” (solves peak-valley price/grid load issues)
Scenario Adaptation: Matches buses’ “day operation, night charging” via time-shifted energy supply (no municipal power needed)
Benefits: From single economic benefit to “ecology + economy + operation” triple value
3.Technical Advantages
Stability: PV-storage synergy eliminates PV intermittency; 24h reliable power (Meizhou: >1,100 annual effective generation hours)
Low-Carbon: Annual 780,000kWh power → saves 234t standard coal, cuts 640t CO₂ (eq. 35,000 trees)
Economy: O&M cost = 1/5 diesel power; annual savings >500,000 CNY; payback 6-8 years
Flexibility: PV uses idle spaces (roofs/shelters); modular storage expandable; high replicability
