In 2021, India's Ministry of Power issued a landmark directive mandating that all coal-based thermal power plants (TPPs) co-fire at least 5% biomass pellets by weight in their coal feed. This directive — updated and reinforced in 2022 and 2023 — is now actively enforced with financial penalties for non-compliant plants. Understanding what it means, who it applies to, and how to comply is essential for plant managers and procurement officers in 2026.
Scope: Who Does the Mandate Apply To?
The 5% co-firing mandate applies to all grid-connected coal-based thermal power plants above 100 MW capacity in India — including:
- Central sector plants (NTPC, NHPC subsidiaries)
- State sector plants (GENCOs — Gujarat, Maharashtra, Rajasthan, MP, etc.)
- Private sector IPPs with long-term PPAs
- Captive power plants above 100 MW (though compliance timeline varies)
Distribution companies (DISCOMs) are also required to include biomass co-firing obligations in new power purchase agreements.
Eligible Biomass Specifications for Co-firing
The Ministry of Power's biomass co-firing guidelines specify:
| Parameter | Specification |
|---|---|
| Form | Pellets or torrefied biomass (loose biomass not permitted) |
| Diameter | 6mm (±1mm) |
| GCV (as-received) | Minimum 3,500 Kcal/kg |
| Moisture content | Maximum 12% |
| Ash content | Maximum 6% (preferred: <2%) |
| Chlorine content | Maximum 0.3% |
| Feedstock | Agricultural residues only — no MSW, no treated wood |
BBI's standard biomass pellets meet all specification parameters: GCV 4200–4600 Kcal/kg, moisture <10%, ash <2%, chlorine <0.05% (agro-waste feedstock).
Compliance Timeline & Current Status (2026)
The original 2021 directive set a March 2023 deadline. After industry pushback citing pellet supply constraints, the timeline was extended. As of 2026:
- All plants above 500 MW: 5% co-firing mandatory, non-compliance invites financial disincentives
- Plants 100–500 MW: 3% co-firing mandatory, with ramp-up to 5% by March 2027
- CEA (Central Electricity Authority) is tracking plant-level compliance data quarterly
Financial Penalties for Non-Compliance
Under the Electricity Act 2003 and the Ministry directive, non-compliant plants face:
- Reduction in merit order dispatch priority
- Disincentive payments to DISCOMs for coal-only generation above approved limits
- Public CEA compliance report publication — reputational risk for listed utilities
Supply Volumes Required
A 1,000 MW coal plant consuming 4 million tonnes of coal per year requires 200,000 MT of biomass pellets annually for 5% co-firing. India's total coal-based capacity of ~200 GW implies a biomass pellet demand of 40 million MT/year at full compliance — versus current domestic production of approximately 2 million MT/year. This structural supply gap is why co-firing pellet prices remain firm.