Which paper mill upgrades qualify for SIDBI's Green Climate Fund loan?

SIDBI's September 2026 assessment for pulp and paper lists 43 technologies its Green Climate Fund programme can finance, from high-efficiency refiners, shoe presses and drum pulpers to fluidised bed boiler conversions and condensate recovery. Mill equipment is Category B and needs a site-specific plan; effluent treatment, ZLD and captive solar are low-risk Category C.

The list, by mill section

• Pulping: high concentration pulper, hi-consistency pulper, drum pulpers, bleached chemi-thermo-mechanical pulp, extended delignification for wood cooking.
• Refining and screening: high-efficiency refiner, low consistency refining, multi-functional combined screen, and punched metal and slit screens with a maceration machine for waste paper.
• Pressing and drying: shoe press, high-concentration size press, pocket ventilation, dryer bars inside the dryers.
• Drives: VFDs replacing Dyna drives, AC drives for the paper machine and winder, rewinders with VFD controls, vacuum blowers.
• Steam and heat: conversion from stoker to fluidised bed boiler, boilers fired on paper sludge and other solid waste, heat recovery boilers, steam recompression heat pump, cascaded condensate recovery, seven-effect falling film evaporator, oxyfuel burner.
• Chemical recovery and washing: recovery unit for spent liquor, black liquor gasification, modern brownstock washers, screw washer.
• All of the above are Category B. Category C: captive solar within the mill, electric vehicles and charging, effluent treatment or ZLD, rainwater harvesting and green buildings.

Your mill's CPCB colour

• Agro and wood based pulp and paper, bleached or unbleached: Red.
• Waste-paper based with bleaching: Red.
• Waste-paper based without bleaching, 15 tonnes a day or more: Red; below 15 tonnes a day: Orange.
• Corrugated boxes and paper products without pulping or boilers: White.

What SIDBI checks before sanction

Before sanction SIDBI's officer and environmental expert verify that your Consent to Establish, Consent to Operate and factory licence are valid. Category B projects then go through detailed due diligence and carry a site-specific environmental and social management plan. A Red category mill with a lapsed consent should renew it before applying, because a lapsed consent stops the file before the upgrade is even assessed.

Choosing what to put in the application

The list is indicative, and the final category is decided case by case after a site visit. Pick the upgrade whose saving you can show from your own records: refiners, drives and vacuum systems show up in the power bill, while boiler conversions and condensate recovery show up in coal or biomass per tonne of paper.

Low consistency refining at a 60 tonne a day kraft mill (assumed figures)

• Mill type: waste-paper kraft, unbleached, 60 tonnes a day, so Red category (15 tonnes a day or more)
• Refining power: 80 kWh per tonne now, 60 kWh per tonne after (use the supplier's guarantee)
• Power saved: 20 kWh x 60 tonnes x 330 days = 3,96,000 kWh a year
• CO2 avoided: 3,96,000 kWh x 0.675 kg per kWh (CEA grid factor, FY 2025-26) = 2,67,300 kg, about 267 tonnes a year

If the refiners are not separately metered, a month of sub-meter readings before the change gives the before figure SIDBI will want.

What Senseible does here

Senseible reads your power bills and coal or biomass invoices into kWh and fuel per tonne of paper, month by month: the baseline a refiner, drive or boiler upgrade is measured against, and the after figure once it runs. SIDBI decides the loan.

• Green loan readiness check
• Paper mill carbon footprint per tonne
• Is a paper mill covered by CCTS?
• Finance for ETP or ZLD upgrades

Sources: SIDBI, GCF-FMAP ESIA and ESMP, Direct Finance, Pulp and Paper sector (2 September 2026): 43-item technology list with categories, CPCB classification table, pre-sanction consent checks, CEA, CO2 Baseline Database for the Indian Power Sector, version 22.0: 0.675 kg CO2 per kWh for FY 2025-26

Last reviewed 2026-10-30. SIDBI revises its sector assessments; re-check the Green Pathways e-series page every quarter.