CARBON COMPLIANCE AND EXPORT COMPETITIVENESS OF LITHIUM BATTERIES BASED ON SPATIOTEMPORAL ELECTRICITY-CARBON ACCOUNTING: A CASE STUDY OF EVE ENERGY’S JINGMEN BASE

Against the backdrop of increasing regulatory attention to lifecycle emissions and product-level traceability, lithium-ion battery exporters need credible carbon footprint information. This study takes the Jingmen base of EVE Energy as a case to analyze how the temporal and spatial resolution of electricity carbon factors affects the visibility of green electricity benefits. The study comprehensively reviews the rooftop photovoltaic and energy storage investments, Hubei grid factors, and third-party verification records reported in the case. The case report shows that the rooftop photovoltaic installed capacity is 92.30 MW, with electricity generation of 104,602.54 MWh, and an estimated emission reduction of 59,654 t CO₂e; after recalculation using refined factors, the carbon emission intensity associated with electricity consumption for energy storage cell production changes from 5.5214 to 3.4477 kg CO₂e/kWh, and the accounting granularity is reported to have improved by 25%. The analysis distinguishes the visibility of carbon accounting from independently verified actual emission reductions, and summarizes the roles of hourly matching, localized grid factors, third-party verification, and digital product records. These measures help improve the auditability of electricity-related performance and enhance export compliance readiness, providing a reference for carbon management optimization for lithium battery exporters.