Sodium-ion Battery Pilot Project Report: Industry Trends, Plant Setup, Machinery, Raw Materials, Investment Opportunities, Cost and Revenue

Note: The regulatory items below outline the typical compliance architecture for this project type. Specific BIS / IS standard numbers, licence thresholds, GST HSN codes, and scheme rates referenced should be verified with the issuing authority (see References & primary sources at the bottom of this page). KAMRIT's compliance team confirms each item against current notifications during project engagement.

Establishing a sodium-ion battery manufacturing facility in India requires navigating a multi-layered approvals architecture spanning energy, environment, quality, and industrial compliance frameworks. The regulatory sequence is sequential but partially concurrent for experienced practitioners.

• MNRE Type Approval and Grid Connectivity: Battery energy storage systems deployed for grid applications require MNRE certification confirming performance standards under specified test protocols. Grid-connected projects additionally require connectivity clearance from the respective State Load Dispatch Centre (SLDC) under the Indian Electricity Grid Code (IEGC) 2023.
• BIS Certification under Bureau of Indian Standards Act, 2016: Battery safety and performance standards (IS 16046, IS 13843) apply to electrochemical storage systems. Compliance is mandatory for domestic market sales; CMC testing at NABL-accredited labs such as ERDA Vadodara or CDRI Lucknow establishes conformity assessment.
• EIA Notification 2006 and SPCB Consent: Projects with installed capacity above 1 MWh in category B districts or above 5 MWh in category A districts require Environmental Impact Assessment clearance from the respective State Environment Impact Assessment Authority (SEIAA). State Pollution Control Board (SPCB) consent under the Water (Prevention and Control of Pollution) Act, 1974 and Air (Prevention and Control of Pollution) Act, 1981 is mandatory prior to construction commencement.
• Factories Act, 1948 and State Industrial Department Licence: Manufacturing facilities employing 20 or more workers on any day in the preceding 12 months with electrical power installed require a Factory Licence under the Factories Act, 1948. State-specific licences from the Directorate of Industrial Safety and Health (DISH) in states like Gujarat, Maharashtra, and Tamil Nadu apply for operating in designated industrial estates.
• PLI Scheme Registration for ACC Battery Storage: Eligible manufacturers must register with the National Programme on Advanced Chemistry Cell (ACC) Battery Storage under the PLI Scheme, 2021. The scheme offers incentives of ₹15,35 per kWh for battery cell manufacturing capacity, subject to minimum capacity thresholds of 5 GWh for single-location and 50 GWh cumulative across approved facilities, with five-year incentive disbursement cycles.
• GST Registration and Input Tax Credit Compliance: GST registration under the GST Act, 2017 is mandatory. Battery manufacturing attracts 18% GST (HSN 8507); manufacturers must maintain detailed input tax credit reconciliation to optimize working capital. Quarterly GSTR-1 and monthly GSTR-3B filings are required.
• GST Compensation Cess and Customs Duty Optimisation: Batteries used in electric vehicles attract GST compensation cess at graduated rates. Capital equipment imports for battery manufacturing may qualify for concessional customs duty under Project Import Regulations (PIR) for plant and machinery classified under Chapter 84 or 85.
• MCA SPICe+ Incorporation and Annual Compliance: If establishing a new legal entity, MCA SPICe+ form filing completes incorporation, DIN allotments for directors, and PAN/TAN registrations. Ongoing compliance includes annual AGM, Form 8 (for charged assets), Form 11, and Statutory Auditor appointments within 30 days of financial year close.

KAMRIT coordinates the entire approvals chain from MNRE type-approval coordination through EIA and SPCB consent applications, GST counsel, MCA compliance filings, and PLI scheme registration. Our integrated approach with empanelled environmental consultants, BIS-accredited testing partners, and PLI scheme specialists enables concurrent submissions that compress the approvals timeline to 14-18 months for pilot-scale projects.

The sodium-ion battery sub-sector occupies a distinct position in India's energy-storage landscape. Unlike lithium-ion, which dominates electric mobility at 75-80% of the stationary storage market today, sodium-ion appeals to applications where energy density is secondary to cost, thermal stability, and domestic material sourcing. Grid-scale storage for renewable integration represents the largest addressable segment, with India's 500 GW renewable target by 2030 implying 85-130 GWh of required storage capacity.

Government mandates requiring co-location of battery storage with solar and wind projects create guaranteed demand pull. The PM Surya Ghar Yojana, targeting 10 million rooftop solar installations, drives distributed storage demand for residential back-up applications. Telecom infrastructure expansion, with over 800,000 towers requiring reliable backup power, represents a 12-15% share of the stationary storage market.

Data centre UPS systems, growing at 20-25% annually driven by digital infrastructure and the Gol's data localisation mandates, constitute another 8-10% of demand. Two and three-wheeler applications, where sodium-ion is gaining acceptance for lower-range vehicles, capture an emerging 5-8% share. The IRA-driven non-China export opportunity opens markets in Southeast Asia, the Middle East, and Africa where cost-sensitive utility-scale storage procurement is expanding rapidly.

The growth gradient runs from telecom backup at 12-15% CAGR to grid storage at 35-40% CAGR, with two-wheeler applications in the 25-30% band.

Project-specific demand drivers

• India 500 GW renewable target by 2030
• PLI scheme for advanced manufacturing
• ALMM domestic preference enforcement
• PM Surya Ghar Yojana driving rooftop demand
• Battery storage co-located mandates
• IRA-driven non-China export opportunity

Sodium-ion battery manufacturing presents distinct process characteristics compared to established lithium-ion lines, creating both technology choice complexity and domestic supply-chain opportunities. The pilot project operates within a CapEx band of ₹10.7 crore for a 50-100 MWh annual capacity starter line to ₹246 crore for a 500 MWh to 1 GWh commercial-scale facility. Core process steps include cathode synthesis, anode preparation, cell assembly, electrolyte filling, and formation cycling.

Cathode materials for sodium-ion use layered oxide (NaxMO2), Prussian Blue Analogue (NaxM[Fe(CN)6]), or polyanionic compounds (Na3V2(PO4)3), each offering different energy density and cost trade-offs. Layered oxide cathodes deliver 120-140 Wh/kg energy density at ₹1,800-2,200 per kg. Prussian Blue Analogues offer lower cost at ₹800-1,200 per kg but with reduced energy density of 90-110 Wh/kg.

Anode technology centres on hard carbon derived from biomass or petroleum pitch, a critical differentiator where Indian manufacturers can establish domestic supply chains. Hard carbon production at 150-200 tonnes per annum pilot scale costs ₹600-900 per kg. The dry room, maintaining less than 1% relative humidity, represents ₹3-5 crore of CapEx for a 500 square metre facility with HVAC and desiccant systems from Munters India or Desert Air Technologies.

Cell assembly equipment including electrode coaters, calendaring mills, winding or stacking machines, and tab welding systems from suppliers like Forte Healthcare (India), Manz (Germany), or Kokusan (Japan) defines line throughput. Formation and testing equipment, including cycle testers from Arbin Instruments (USA) or Maccor (USA), requires ₹2-4 crore for a 100 MWh pilot line. Operating benchmarks for Indian conditions include energy cost of ₹3.80-4.50 per kWh for HT industrial supply in Gujarat and Rajasthan states, labour rates of ₹28,000-42,000 per month for skilled technicians in western Indian industrial clusters, and cycle efficiency of 88-92% for well-optimised sodium-ion chemistry.

Catl and BYD have commercialised sodium-ion production in China, achieving cell costs below $90 per kWh. In India, fully-loaded cell costs at pilot scale reach ₹18,000-22,000 per kWh, declining toward ₹12,000-15,000 per kWh at commercial scale of 1 GWh or above. The CapEx-per-kWh of annual output benchmark is ₹8-12 crore per GWh at pilot scale, compressing to ₹4-6 crore per GWh at commercial scale with automation upgrades.

The project's CapEx range of ₹10.7 crore to ₹246 crore defines the financing architecture. For the pilot-scale entry point of ₹10.7 crore to ₹50 crore, KAMRIT recommends a Debt:Equity ratio of 60:40, with promoter equity at minimum ₹4.3 crore for the ₹10.7 crore facility. IREDA (Indian Renewable Energy Development Agency) offers preferential lending for battery storage projects at 7.5-8.5% ROI, making it the primary debt institution for projects exceeding ₹20 crore. SIDBI provides working capital and term loan support for MSMEs in the battery manufacturing space at 8-10% ROI. State Bank of India and HDFC Bank offer project finance for manufacturing with 10-12 year tenors at 8.5-9.5% ROI. For projects in the ₹50 crore to ₹246 crore band, ICICI Bank, Axis Bank, and Bank of Baroda have dedicated renewable energy financing desks with capability for syndicated loans. The PLI scheme for ACC Battery Storage provides production-linked incentives of ₹15,035 per kWh for five years from commencement of commercial production, providing a material subsidy that improves project IRR by 3-5 percentage points. Gujarat's Renewable Energy Policy 2023 offers additional capital subsidy of up to 10% for battery storage manufacturing in designated industrial parks. Tamil Nadu's EV and Battery Manufacturing Policy provides similar incentives for facilities in Sriperumbudur and Oragadam clusters. Working capital requirements follow a 45-60 day operating cycle: raw material procurement of cathode precursors and hard carbon requires 15-20 days, cell manufacturing through formation testing requires 20-25 days, and finished goods inventory plus receivables requires 30-45 days. The project's payback period of 3.5 to 5.5 years translates to IRR of 18-24% in the base case scenario with 50-60% capacity utilisation from year three onward. Debt service coverage ratio of 1.35-1.5x is achievable under conservative demand assumptions.

Three risks require structured mitigation in the bankable DPR. First, technology maturation risk: sodium-ion chemistry continues to evolve, with energy density improvements and cycle life enhancements ongoing at global laboratories. Mitigation involves securing technology licensing agreements with established developers like Faradion (acquired by Reliance) or AMTE Power, building process flexibility into cell assembly equipment for chemistry pivots, and structuring the pilot project with 18-24 month technology assessment windows before full commercial commitment.

Second, raw material supply concentration risk: hard carbon anodes and certain cathode precursor chemicals remain largely sourced from China and Taiwan. KAMRIT advises establishing supply agreements with domestic chemical manufacturers including Tata Chemicals (for soda ash and sodium compounds) and Anupam Rasayan for specialty chemicals, with 12-month inventory buffers for critical inputs during the pilot phase. Third, lithium-ion cost deflation risk: global lithium-ion cell prices have declined at 12-18% annually since 2022, reaching ₹160-200 crore per GWh in 2024.

Continued cost erosion could compress sodium-ion's price advantage. The PLI incentive of ₹15,035 per kWh effectively subsidises this risk for domestic manufacturers, and the natural abundance of sodium carbonate in India (estimated reserves of 21.4 billion tonnes) provides structural cost advantages that lithium-ion cannot replicate. Sensitivity analysis scenarios show that at 55% capacity utilisation with ₹190 crore per GWh cell costs and PLI benefits included, the project achieves 4.2 year payback.

Under conservative assumptions of 40% utilisation and ₹230 crore per GWh costs, payback extends to 6.1 years without PLI but 5.2 years with PLI incentives factored in.