How to Read China's Green Certificate Market: GEC Issuance, One-Trade Rule, Two-Year Validity and the Consumption Weights Behind Demand

Short answer. A Chinese green electricity certificate (绿证, GEC) is a state-issued record that 1,000 kWh of renewable electricity was generated. The supply side is mechanical — monthly issuance to registered projects. The demand side is policy — provincial consumption-responsibility weights that provinces must meet mainly with physical electricity, and industry green-power ratios that key sectors must meet with certificates. The two tracks use different accounting, and most confusion about the market comes from mixing them. This guide sets out the rules as written in the 2023–2025 documents and the Energy Law. It quotes no price or volume.

What a certificate is

Document 1044 (发改能源〔2023〕1044号) defines the certificate as the sole proof of the environmental attribute of renewable electricity and the sole voucher for recognising renewable power production and consumption, one certificate per 1,000 kWh. The Energy Law (effective 1 January 2025) places the instrument in statute: the state establishes a green-energy consumption promotion mechanism through systems such as the certificate, encourages users to prioritise renewables, and requires public institutions to procure clean low-carbon energy first.

Supply: who issues, to whom, for what

The NEA's Issuance and Trading Rules (国能发新能规〔2024〕67号, 26 August 2024) assign policy design to the NEA, issuance to the NEA's 电力业务资质管理中心, and data support to grid companies, trading centres and the National Renewable Energy Information Management Centre. Sellers are registered (建档立卡) generators or project owners; buyers are legal persons, unincorporated organisations and natural persons meeting state rules; each participant holds one real-name account in the national system, and sellers must undertake to claim only Chinese certificates and not to claim other certificates of the same attribute. That last undertaking is the Chinese system's answer to double counting against foreign instruments.

Coverage is broad but tradability is narrower. Document 1044 extends issuance to all electricity from registered wind, solar (including distributed PV and CSP), conventional hydro, biomass, geothermal and ocean projects; tradable certificates are issued for exported electricity of these projects, while existing conventional hydro gets non-tradable certificates transferred free with the electricity, except fully market-based hydro commissioned from 1 January 2023. The 2024 Rules restate this: certificates are issued monthly; tradable certificates cover exported electricity of wind, solar, biomass, geothermal and ocean projects and of fully market-based conventional hydro commissioned from 1 January 2023, while self-consumed electricity and pre-2023 conventional hydro receive certificates that are not yet tradable; sub-1,000 kWh remainders carry to the next month. For a distributed PV owner, only the exported share produces tradable certificates.

The 2025 Opinions tighten timing: last month's connected projects are to be registered and last month's certificates issued automatically in batch, in principle within the current month.

Trading: where, how, how often

Certificates may be traded unbundled or bundled with the electricity (with quantity, price and delivery stated separately in the contract); unbundled trading runs on the China Green Certificate Trading Platform and the Beijing and Guangzhou power exchanges, inter-provincial green-power trading on the Beijing, Guangzhou and Inner Mongolia exchanges, and intra-provincial green-power trading on provincial exchanges. At present a certificate may be traded only once; the minimum lot is one certificate priced in yuan per certificate; methods include listing, bilateral negotiation and centralised bidding with market-formed prices; and the national system synchronises with all platforms so the same certificate cannot be sold twice. Document 113 adds that third-party stockpiling and resale are forbidden, that compulsory allocation of purchase tasks and restrictions on cross-provincial trading are forbidden, and that NDRC and NEA monitor prices to keep them in a reasonable range.

A certificate is valid for two years counted from the calendar month of generation (inclusive); no unit may interfere with the market by compulsory means, including interfering with price formation or restricting trading regions. One trade, two years: this is not a commodity that can be banked, re-sold or hedged through intermediaries, and a procurement plan should treat it as a flow matched to consumption years rather than as inventory.

Verification is built in. Logging into an account or scanning the certificate QR code returns the certificate code, project name, project type and generation date; the NEA centre publishes monthly issuance and trading reports and discloses issuance volume, trading volume, average trading price and cancellation information; records are kept for at least five years. A buyer presented with a certificate can check it directly.

Cancellation closes the loop. Under the 2025 Opinions, certificates declared as consumed are cancelled against the consumption-certification voucher or other declaration; untraded or undeclared certificates are cancelled automatically after expiry; and certificates matching CCER-registered deep-sea offshore wind or CSP reductions are cancelled; no region may restrict trading.

Demand track 1: provincial consumption weights (physical electricity)

The 2019 notice (发改能源〔2019〕807号) defines the renewable electricity consumption responsibility weight as the share of renewable electricity each provincial region's consumption must reach, split into a total weight (all renewables) and a non-hydro weight; a minimum weight is set for each province and an incentive weight a certain margin above it. Obligated entities are (class 1) grid companies, independent retailers and distribution-retail companies supplying end users, bearing a quantity tied to annual sales, and (class 2) wholesale-market users and enterprises with captive power plants, tied to annual consumption; agricultural use and separately metered heating are exempt; voluntary purchase of certificates counts the corresponding electricity as consumption.

The annual notices set the numbers and the accounting. The 2024 notice (发改办能源〔2024〕598号) makes the 2024 weights binding and the 2025 weights indicative; performance is computed on physical consumption and any shortfall is carried to the next year; it introduces a green-power consumption ratio for aluminium smelting, computed with certificates and only monitored in 2024. The 2025 notice (发改办能源〔2025〕669号) adds ratios for steel, cement, polysilicon and new data centres at national hub nodes; provincial weights are computed mainly on physical consumption with provincial-account purchases of out-of-province certificates as a supplement; the 2025 weight must be met in-year with no carry-over to 2026; industry ratios are computed with certificates; aluminium is assessed in 2025 and the new sectors only monitored.

So the province meets its weight with electrons first and certificates second; the industries meet their ratios with certificates. Reading a provincial weight as certificate demand overstates it; reading an industry ratio as physical demand understates certificate demand.

Demand track 2: industry ratios and energy-intensity accounting (certificates)

Document 113 (发改环资〔2024〕113号, 27 January 2024) excludes non-fossil energy from total-energy-consumption and intensity control, treats the certificate as the basic voucher for renewable consumption in the 14th Five-Year Plan provincial energy-saving assessment, counts electricity that was not in a cross-provincial market or green-power trade but whose certificates were traded cross-provincially toward the receiving province (and no longer the sending province), and caps certificate-based deductions at in principle 50% of the energy saving a province needs for its intensity target. This is the link between certificates and the energy-intensity targets that provincial governments are assessed on.

The 2025 Opinions (发改能源〔2025〕262号, 6 March 2025) set the direction to 2030. They target a basically complete trading system by 2027 combining mandatory and voluntary consumption with nationwide free flow of certificates, and a further-improved system by 2030 with effective international application. On mandatory consumption: steel, non-ferrous, building materials, petrochemical and chemical enterprises, data centres and other key energy users should reach a green-power share in principle not below the national average total consumption weight by 2030; new data centres at national hub nodes should rise above an 80% base; the weight is to be pushed down to key energy users with certificates used for weight accounting; and green-power consumption is to enter listed-company ESG reporting. On market design they call for a certificate price index, price formation in green-power trades by reference to unbundled certificate prices, medium- and long-term certificate purchase agreements, provincial certificate accounts, a certificate-based consumption accounting and certification system, and international recognition of Chinese certificates.

Interaction with the 2025 tariff reform

Document 136 (发改价格〔2025〕136号) requires green-power trades to state energy price and certificate price separately, and provides that electricity settled under the sustainable-development price-settlement mechanism does not also receive certificate revenue. A generator's certificate income therefore depends on how much of its output it placed in the mechanism; a buyer of bundled green power should see two prices on the contract.

Reading a certificate position

• Supply check. Is the project registered, and is the electricity exported (tradable) or self-consumed (not yet tradable)?
• Vintage check. Validity is two years counted from the generation month, that month included; match certificate vintages to the consumption year being claimed.
• Chain check. One trade only, no intermediaries — the seller should be the project or its agent, not a reseller.
• Purpose check. Provincial weight (physical first) or industry ratio (certificate-based)? The documents the buyer must file differ.
• Double-claim check. The seller's undertaking not to claim other attribute instruments, and no certificate revenue claimed on electricity settled under the price mechanism.

Scope limits

No price, volume or provincial weight value is quoted; the weight tables and Document 807's accounting-method attachment were not downloaded. International recognition of Chinese certificates by voluntary corporate schemes is outside scope. Rules only; not investment or compliance advice.