Biomass Co-Firing Policy in Thermal Power Plants

Biomass Co-Firing Policy in Thermal Power Plants: Complete 2026 Guide for India

Introduction: Why Biomass Co-Firing Has Become a National Priority

India’s power sector is at a critical transition point. On one side, coal-based thermal power plants continue to supply more than 70% of the country’s electricity demand. On the other side, India has committed itself to ambitious climate goals, including reducing carbon intensity and increasing renewable energy usage.

Biomass co-firing in thermal power plants has emerged as a practical, immediately implementable solution that bridges this gap—allowing coal plants to reduce emissions without shutting down or undergoing massive retrofits.

The Biomass Co-Firing Policy, driven by the Ministry of Power, MNRE, CPCB, and implemented through NTPC and state GENCOs, has fundamentally changed the demand landscape for biomass pellets in India.

This article explains the policy in detail—covering mandates, technical requirements, pellet specifications, business opportunities, challenges, and future outlook—making it a complete reference for anyone involved in the biomass pellet value chain.

What Is Biomass Co-Firing?

Biomass co-firing refers to the practice of partially replacing coal with biomass pellets in existing coal-fired thermal power plants.

Instead of burning 100% coal, plants blend a certain percentage (by heat input or mass) of biomass pellets—typically made from agricultural residues like paddy straw, sawdust, or agro-waste.

Typical Co-Firing Ratios

5% biomass pellets (current mandatory level)
7% planned escalation
Pilot trials up to 10% in suitable boilers

Importantly, co-firing:

Requires minimal boiler modification
Can be implemented relatively quickly
Uses locally available agricultural waste
Reduces CO₂, SO₂, NOx, and particulate emissions

Why India Introduced Biomass Co-Firing Policy

1. Stubble Burning Crisis

Northern India faces severe air pollution every winter due to open-field burning of paddy straw. Biomass co-firing converts this waste into fuel, directly addressing the root cause.

2. Coal Import Reduction

India imports significant quantities of coal. Replacing even 5–7% coal with domestic biomass reduces foreign exchange outflow.

3. Climate Commitments

Biomass is considered carbon-neutral (biogenic carbon cycle), helping India meet:

Nationally Determined Contributions (NDCs)
Net-zero aspirations (long-term)

4. Circular Economy & Rural Income

Co-firing creates:

New income streams for farmers
Local pellet manufacturing MSMEs
Rural employment in logistics and aggregation

Evolution of Biomass Co-Firing Policy in India

Early Pilot Phase (2017–2020)

NTPC conducted pilot co-firing trials
Focused on rice husk and agro-residue pellets
Technical feasibility established

Policy Formalization (2021–2022)

Ministry of Power issued advisory to all coal-based power plants
Target of 5% biomass co-firing
Creation of SAMARTH Mission

Mandatory Implementation (2023 onwards)

Biomass co-firing made mandatory
Procurement guidelines standardized
GeM portal integration
Pellet specification norms finalized

Current Biomass Co-Firing Mandates (2025–2026)

Mandatory Co-Firing Targets

5% biomass co-firing by all coal-based thermal power plants
Planned increase to 7% in subsequent phases

Applicability

NTPC plants
State GENCOs
Independent Power Producers (IPPs)
Plants near agricultural regions prioritized

Monitoring & Compliance

Monthly reporting of biomass consumption
Penalties for non-compliance (state-specific)
Inclusion in environmental performance metrics

SAMARTH Mission: Backbone of Biomass Co-Firing

SAMARTH (Sustainable Agrarian Mission on use of Agri-Residue in Thermal Power Plants) is the flagship mission supporting co-firing.

Objectives

Promote biomass pellet usage
Create assured demand
Support pellet manufacturers
Reduce stubble burning

Key Interventions

Aggregation infrastructure
Pelletization support
Technology standardization
Capacity building

SAMARTH acts as the coordination layer between:

Farmers
Pellet manufacturers
Power plants
Government agencies

Biomass Pellet Specifications for Thermal Power Plants

Power plants accept only standardized pellets to ensure boiler safety and efficiency.

Typical NTPC / Power Plant Pellet Specifications

Parameter	Requirement
Diameter	6–8 mm
Length	< 40 mm
Moisture	≤ 10–12%
Ash	≤ 10–15%
GCV	2800–3600 kcal/kg
Fines	≤ 5%
Chlorine	Low
Bulk Density	Consistent

Non-compliant pellets are rejected, making quality control a critical success factor for manufacturers.

Types of Biomass Used for Co-Firing

1. Paddy Straw Pellets

Highest priority due to stubble burning
Abundant in Punjab, Haryana, UP, MP
Requires proper drying and densification

2. Agro-Residue Pellets

Wheat straw
Mustard stalk
Cotton stalk
Maize cobs

3. Wood-Based Pellets

Sawdust
Wood chips (limited availability)
Generally higher GCV, lower ash

4. Blended Biomass Pellets

Mix of agro residues for optimized properties

How Biomass Pellets Are Used in Power Plants

Feeding Methods

Direct blending with coal on conveyor
Separate biomass feeding system
Dedicated biomass bunkers

Boiler Compatibility

Pulverized coal boilers (with modifications)
Fluidized bed boilers (better adaptability)

Key Technical Considerations

Slagging & fouling risk
Ash behavior
Fuel handling safety
Storage fire prevention

Role of NTPC in Biomass Co-Firing

NTPC is the largest driver of biomass pellet demand in India.

NTPC Initiatives

Long-term pellet procurement tenders
Vendor registration portals
Transparent QC norms
Dedicated biomass storage yards

NTPC Demand Impact

Millions of tonnes of pellets annually
Stable baseline demand
Bankable offtake for pellet plants

Business Opportunity for Biomass Pellet Manufacturers

Market Size Outlook

5% co-firing translates into 20–25 million tonnes of pellets annually
Demand expected to rise with 7%+ targets

Who Can Enter This Business?

MSMEs
Agri-entrepreneurs
Energy companies
EPC players
Export-oriented pellet plants

Pellet Plant Capacities in Demand

1 TPH (local supply)
2–5 TPH (cluster supply)
10+ TPH (large NTPC-linked hubs)

Government Support Linked to Co-Firing

1. MNRE Biomass Programme

Capital subsidy (CFA) for pellet plants
Capacity-linked assistance
Pre-commissioning approval required

2. CPCB One-Time Assistance

Focused on paddy straw pelletization
High support in NCR / stubble regions

3. PMEGP (MSME Route)

Credit-linked subsidy
Useful for small pellet units

4. Priority Sector Lending

Biomass notified under PSL
Easier bank financing

Challenges in Biomass Co-Firing Implementation

For Power Plants

Pellet availability consistency
Storage & fire risk
Handling system upgrades
Seasonal biomass supply

For Pellet Manufacturers

Raw material seasonality
Quality consistency
Logistics cost
Working capital cycle
Pellet price volatility

How to Succeed as a Pellet Supplier for Co-Firing

1. Focus on Quality First

Lab testing
Consistent moisture control
Low fines

2. Secure Raw Material Supply

Farmer tie-ups
Aggregation centers
Seasonal inventory planning

3. Choose Right Machinery

Dryer capacity matching
Ring die pellet mills for durability
Proper cooling & screening

4. Align with Power Plant Logistics

Location near plant
Bulk handling
Covered transport

Environmental Impact of Biomass Co-Firing

Emission Reduction

CO₂ reduction proportional to biomass %
Lower SOx and NOx
Reduced PM emissions

Waste Utilization

Converts crop residue into energy
Reduces open burning

Rural Sustainability

Farmer income support
Decentralized energy economy

Future of Biomass Co-Firing in India (2026–2035)

Expected Trends

Increase beyond 7% co-firing
Torrefied biomass adoption
Dedicated biomass power blending hubs
Export-grade pellet plants

Policy Direction

Stricter emission norms
Carbon credit linkage
Digital tracking of biomass usage

Biomass co-firing is expected to remain a core transition strategy until large-scale renewable + storage fully replaces coal.

SEO-Focused FAQs (for Google Featured Snippets)

Is biomass co-firing mandatory in India?

Yes, the Government of India has made 5% biomass co-firing mandatory for coal-based thermal power plants, with plans to increase the percentage.

What type of biomass pellets are used in thermal power plants?

Non-torrefied agro-residue pellets (6–8 mm) with controlled moisture, ash, and GCV are commonly used.

How much biomass pellet demand is generated by co-firing?

At 5% co-firing, India generates demand of over 20 million tonnes of biomass pellets annually.

Is biomass co-firing profitable?

Yes. It reduces coal cost, emissions, and creates stable demand for pellet manufacturers supported by government policy.

Conclusion: Biomass Co-Firing Is a Structural Opportunity, Not a Short-Term Policy

The Biomass Co-Firing Policy is not a temporary scheme—it is a structural shift in how India manages:

Coal dependency
Agricultural waste
Emission reduction
Rural energy economics

For pellet manufacturers, machine suppliers, EPC players, and investors, this policy opens a once-in-a-generation opportunity to build scalable, government-aligned businesses.

Those who focus on quality, compliance, and long-term planning will benefit the most as India accelerates toward cleaner thermal power.