Companies have been talking about carbon neutrality for several years, but when it came time to actually implement it, they realized that the easiest reductions had already been made, and what remained was the hardest part. Industry insiders call this the “last mile.”

I. How Are Zero-Carbon Factories Built?

First, maximize energy efficiency by replacing equipment with high-efficiency models wherever possible; next, install solar panels on the roof to generate your own electricity; if green electricity isn’t enough, purchase it—either by buying green power directly or acquiring green certificates; then add energy storage and a digital carbon management system to track every metric ton of emissions. This is a two-pronged approach combining hardware and management.

II. What Exactly Is a Green Certificate?

A green certificate proves that the environmental credits corresponding to every megawatt-hour of green electricity you use belong to you. In China, there are Green Energy Certificates (GEC), while internationally there are I-RECs; in addition, there are green electricity trading, Certified Voluntary Emissions Reductions (CCERs), and mandatory carbon market allowances. They may look similar, but they serve different purposes.

Tools Essence What to Solve
Green Energy Certificate (GEC) Environmental Rights Certificates Verifying the Green Electricity Status
Green Electricity Trading Bundled Purchase of Green Electricity and Rights Using Green Electricity + Holding a Certificate
CCER Voluntary Emission Reductions Offset One's Own Emissions
Carbon Allowances Mandatory Emission Caps Compliance and Contract Performance

III. The Most Common Pitfalls

First, there is the issue of double counting—the environmental attributes of the same green electricity cannot be claimed for credit on both sides. Second, there is the question of who actually owns the environmental credits from green electricity; if this is not clearly specified in the power purchase agreement, it leads to disputes. Third, Scope 3 emissions—that is, emissions from upstream and downstream supply chain sources—are often even more challenging to address than those from one’s own factory. The risk of greenwashing lies in the practice of “buying credits without reducing emissions.”

The real challenge of the "last mile" is to first cut out everything that can be cut—no matter how small—and then use compliant documentation to fill in the gaps, rather than the other way around.

There are no shortcuts to carbon neutrality; green certificates and carbon trading are stopgap measures, not a fig leaf. Companies that take a steady approach first ensure their own factories are environmentally sound before even considering those certificates.