Mandatory efficiency and energy-intensity standards across China’s photovoltaic value chain will accelerate the retirement of legacy manufacturing capacity, raise technology thresholds, and reshape industry competition ahead of their 2027 enforcement.
On July 2, the Ministry of Industry and Information Technology (MIIT), together with the National Development and Reform Commission (NDRC) and the State Administration for Market Regulation (SAMR), released three mandatory national standards for the photovoltaic sector, representing one of the most significant regulatory interventions in the industry’s history. Together, they establish binding efficiency and energy-consumption requirements spanning the entire manufacturing chain from upstream silicon production to photovoltaic modules and inverters.
- GB 47834-2026: Minimum allowable values of energy efficiency and energy-efficiency grades for crystalline silicon photovoltaic modules and photovoltaic inverters
- GB 47835-2026: Norm of energy consumption per unit production of monocrystalline silicon
- GB 29447-2026: Norm of energy consumption per unit production of polysilicon and germanium
All three standards take effect on January 1, 2027, establishing mandatory performance thresholds across monocrystalline silicon, polysilicon, wafers, modules, and inverters. For much of the industry, the regulations mark the beginning of a countdown to either substantial technology upgrades or the retirement of non-compliant assets.
A regulatory reset for PV manufacturing
The standards introduce a three-tier efficiency grading system, with Grade 1 representing best-in-class performance and Grade 3 defining the minimum level required for market access.
More importantly, they shift the industry’s upgrade cycle from market-driven competition to regulatory compliance. Products and manufacturing lines that fail to meet the prescribed thresholds will no longer be eligible for sale or deployment in China, fundamentally changing the economics of capacity investment.
For crystalline silicon modules, the minimum conversion efficiency is set at 23.2% for mainstream architectures and 23.5% for BC modules. Inverter efficiency requirements are similarly aligned with current mainstream technologies, including TOPCon, HJT, and BC.
For the widely used 2382 × 1134 mm module format, the efficiency requirement translates into a minimum power output of approximately 630 W, effectively establishing a new floor for the domestic market.
Raising the technical baseline
The standards codify a significantly higher minimum technical benchmark for commercial PV manufacturing:
- Minimum module efficiency
- 23.2% (TOPCon, HJT)
- 23.5% (BC)
- Minimum module output
- ~630 W (2382 x 1134 mm mm format)
- Maximum environmental stress degradation
- ≤8.6%
- Minimum bifaciality
- TOPCon ≥75%
- HJT ≥85%
- BC ≥70%
These requirements largely reflect the capabilities already achieved by leading manufacturers, effectively embedding next-generation technologies into China’s regulatory baseline.
By Q2 2026, most leading products had already surpassed these thresholds. Mainstream 210R TOPCon modules typically deliver 635–650 W, while 182R products generally reach 620–635 W, making 630 W an industry baseline rather than an aspirational target.
However, a substantial share of pre-2024 manufacturing capacity—including PERC production lines, early-generation TOPCon platforms, and older wafer and module formats—remains below the new requirements.
Accelerating the retirement of legacy capacity
The new standards have immediate implications for China’s large installed manufacturing base.
In 2025 procurement tenders, modules rated below 600 W accounted for 21.9% of bids. Industry estimates suggest that more than 300 GW of existing manufacturing capacity could fall below the new 630 W threshold.
The policy therefore functions as a de facto capacity-rationalization mechanism, using mandatory technical standards to accelerate the retirement of less competitive assets.
The most exposed segments include:
- P-type PERC production lines
- Early-generation TOPCon facilities using non-rectangular wafer architectures
- Older 182 mm and legacy module formats
By contrast, most modern 210R TOPCon production lines already comply with the new standards, widening the competitive advantage of leading manufacturers.
Upstream pressure: stricter polysilicon energy limits
The upstream standard (GB 29447-2026) imposes significantly tighter limits on energy intensity in polysilicon production. Key benchmarks include:
- Maximum energy consumption: 6.4 kgce/kg
- Fluidized-bed process requirement: 5.0 kgce/kg
Current industry performance varies considerably:
- Conventional Siemens process (trichlorosilane route): approximately 7.05 kgce/kg
- Legacy modified Siemens processes: 7.6–8.5 kgce/kg
- Fluidized-bed (silane route): typically 4.55 kgce/kg
Leading producers have moved substantially ahead of these requirements. GCL’s granular silicon process is reported to achieve energy consumption of approximately 1.7 kgce/kg, comfortably below the Grade 1 benchmark of ≤3.6 kgce/kg.
The new standards therefore reinforce a widening technological divide between industry leaders and legacy producers.
From market competition to regulatory consolidation
The regulations represent a structural shift in China’s PV industry, replacing a decade of price-driven expansion with compliance-led industrial upgrading. Three mechanisms are likely to drive industry restructuring:
- Mandatory technology replacement: Legacy production lines that fail to meet minimum efficiency standards will lose access to the domestic market, regardless of cost competitiveness.
- Accelerated balance-sheet pressure: TOPCon, now the industry’s dominant technology, also accounts for much of today’s excess capacity. Given typical five-year depreciation schedules, assets commissioned during 2022–2023 are likely to face their greatest financial pressure during 2027–2028.
- Faster industry consolidation: Manufacturers operating non-compliant assets will face three choices: invest in major retrofits, sell to stronger competitors, or exit the market.
It is also worth closely observing the trends in BC and HJT technologies, which were expected to rapidly displace TOPCon but have not yet done so. BC adoption has progressed more slowly than anticipated, while HJT continues to face cost challenges at scale. As a result, TOPCon may continue to improve in efficiency and cost performance, extending its competitive position and delaying a broader technology transition.
A hard reset rather than a gradual transition
Unlike previous industry transitions from multicrystalline to monocrystalline silicon or from PERC to TOPCon, which were driven primarily by economics and market adoption, the 2027 standards impose a fixed regulatory deadline for technological compliance.
By the end of 2027, much of China’s legacy manufacturing capacity is expected to have been:
- Retrofitted to meet the new standards
- Written down or impaired
- Consolidated or permanently retired
The result is likely to be a rapid balance-sheet cleansing across the sector, with adjustment pressures concentrated in older TOPCon assets and other mid-generation production lines.
China’s new photovoltaic efficiency and energy-intensity standards represent far more than a technical update. They constitute a powerful industrial policy tool designed to accelerate consolidation in a sector long characterized by structural overcapacity.
By embedding minimum technology standards into mandatory regulation, China is fundamentally reshaping competition in solar manufacturing—from one centred on capacity expansion to one increasingly defined by efficiency, capital intensity, and technological leadership. The result is likely to be a smaller, more concentrated, and more technologically advanced photovoltaic manufacturing industry by 2027.