Challenges & Solutions in India’s Bus Electrification

Bus transportation continues to be the backbone of urban mobility worldwide. They carry over 60 billion passengers annually and serving as the most accessible form of public transport. Across developing and developed nations alike.

However, road transport accounts for 12% of India’s energy-related CO2 emissions. It is among the fastest-growing end-use sectors in terms of greenhouse gas (GHG) emissions. As cities grapple with mounting environmental pressures, bus electrification has emerged as a critical pathway for sustainable urban transport.

Current Market Size

The global electric bus market has witnessed remarkable momentum, sales grew by 30% in 2024, reaching over 70,000 units worldwide. The global market is valued at USD 64.2 billion, projected to reach $187.8 billion by 2032. According to recent projections, municipal buses are expected to electrify at an unprecedented pace. Electric variants are anticipated to represent 60% of sales by 2030, reaching 83% by 2040. This is a fundamental shift in how cities approach sustainable mobility infrastructure.

India is at the forefront of this revolution, with the government plans like the PM e-Drive Scheme and FAME-II (more on these later). India’s electric bus market has already shown solid growth, with registrations increasing by 65% in 2022. Bengaluru emerges as a flagship destination, set to receive 4,500 electric buses. It is the largest allocation under the current phase, followed by Delhi with 2,800 units and Hyderabad with 2,000 units.

Source: IEA Global EV Outlook 2025

Key Elements of Electric Fleet Transition

Battery Technology

Battery chemistry selection represents perhaps the most critical decision point when purchasing electric vehicles. Currently, Lithium Iron Phosphate (LFP) and Nickel Manganese Cobalt (NMC) technologies dominate current deployments.

• LFP batteries offer superior safety characteristics, longer cycle life exceeding 8,000 cycles, and enhanced thermal stability. Particularly advantageous in India’s challenging climate conditions.
• NMC variants provide higher energy density. This enables extended range capabilities that prove essential for intercity operations and routes with limited charging infrastructure.

Current market trends indicate a decisive shift toward LFP technology for bus applications. This is driven by total cost of ownership considerations and operational reliability requirements.

By 2030, LFP batteries are projected to power 60% of entry-level electric vehicles, while NMC maintains dominance in premium and long-range applications.

Charging Infrastructure

Planning for this one needs a good understanding of operational patterns, grid constraints, and technology interoperability.

Depot charging remains the predominant model for most fleet operations, offering predictable energy costs and simplified operational procedures. However, opportunity charging at strategic locations along high-frequency routes enables reduced battery pack sizes and improved vehicle utilisation rates. Grid integration challenges require careful load management strategies. Particularly in urban areas where transformer capacity constraints and peak demand charges significantly impact operational economics.

The transition from mechanical to electric drivetrains fundamentally transforms maintenance paradigms, generally reducing operational complexity while requiring specialised diagnostic capabilities. Electric buses eliminate numerous maintenance-intensive components, including diesel engines, transmissions, exhaust systems, and complex hydraulic assemblies. This transformation typically reduces maintenance costs by 70% over the vehicle lifecycle while dramatically improving vehicle availability. Achieved through reduced scheduled maintenance intervals and fewer catastrophic failure modes.

Depot digitisation emerges as a critical differentiator in electric fleet operations. Enabling predictive maintenance strategies, real-time performance optimisation, and comprehensive energy management. Modern electric buses generate vast quantities of operational data — battery state of charge, energy consumption patterns, charging session analytics, and vehicle performance metrics.

Kazam’s solution addresses this complexity through a single dashboard that puts together information from charging infrastructure, vehicle telematics, and operations. This approach enables fleet operators to implement predictive maintenance strategies preventing costly downtime, optimising energy use and charging schedules based on real-time grid conditions and operational requirements.

Regulatory Factors

India’s regulatory landscape provides substantial support for electric bus adoption.

Central Government Initiatives:

• FAME II Scheme: Provides subsidies of ₹7,090 per kWh for electric buses up to 250 kWh capacity. Over 6,862 buses are sanctioned and 5,135 are supplied as of February 2025.
• PM e-Drive Scheme: ₹10,900 crore allocation for deploying 14,028 electric buses across major cities from April 2024 to March 2026
• National Electric Bus Program (NEBP): Ambitious target of 50,000 electric buses by 2030, coordinated through Convergence Energy Services Limited

State-Level Policy Initiatives:

• Karnataka: Leading state with comprehensive EV policy including dedicated charging infrastructure mandates and operational incentives
• Maharashtra: New Electric Vehicle Policy 2025 targeting 30% EV adoption by 2030
• Delhi: EV Policy 2.0 is aiming for 95% of new vehicles registered as electric by 2027. Full transition of Delhi’s bus fleet to electric, and expansion of charging infrastructure is expected.
• Gujarat: Focus is on manufacturing hub development. 800 e-buses are operational, and expansion of charging infrastructure is under the Gujarat State Electric Vehicle Policy

Cost of Ownership

Electric buses cost around ₹1.5 crore to ₹3.5 crore vs diesel alternatives for around ₹80-90 lakhs. However, operational cost advantages of ₹7-9 per kilometre versus ₹20-25 per kilometre for diesel variants create favourable lifecycle economics. 

Analysis indicates that capital costs and financing constitute 44-52% of electric bus TCO. Financing costs alone representing 23-34% of total ownership expenses. Here, depot digitization plays a key role in bringing down costs.

Operation model – GCC

In the GCC model, all bus operators get paid per kilometre. Within this per-kilometre payment, a portion covers fixed costs while the remainder addresses variable costs.

To increase profit margins in electric bus fleet operations, operators must focus on reducing fixed costs. These fixed costs encompass several critical areas:

• Workforce and maintenance costs: Efficient staff allocation and preventive maintenance scheduling can significantly reduce operational expenses.
• Electricity consumption: Strategic charging during off-peak hours can lower energy costs substantially.
• Vehicle depreciation: Proper maintenance extends vehicle lifespan and preserves asset value.
• Battery lifecycle management: Extending battery life through optimal charging practices directly impacts long-term profitability.

Charger downtime represents a significant hidden cost. Even 30 minutes of charger unavailability can severely impact depot operations and fleet readiness. To maximize battery lifespan, operators should implement AC charging during optimal nighttime hours.

Proper charger management is equally important. After completing a charging cycle, chargers require approximately 10 minutes to cool down before initiating the next session. Monitoring these cooling intervals helps extend charger lifespan and reduces maintenance costs.

Digitization emerges as the cornerstone of reduced operational costs. With digital monitoring systems, operators can:

• Track charger status and performance in real-time
• Implement intelligent charging schedules based on battery health metrics
• Monitor charging equipment for potential issues such as overheating or connector degradation
• Maintain high fleet uptime through proactive maintenance

Comprehensive monitoring systems are particularly valuable for tracking charger health, as these units are susceptible to overheating issues, and charging connectors (guns) can deteriorate with repeated use. Advanced software solutions provide actionable intelligence on these critical components, ensuring reliable operations and minimizing unexpected downtime.

Analysis indicates that capital costs and financing constitute 44-52% of electric bus TCO, with financing costs alone representing 23-34% of total ownership expenses.

Source

Meanwhile, innovative financing models are emerging to address the capital intensity of fleet electrification:

• Central government electric bus financing facility: Proposed to provide concessional financing and aggregate demand across multiple state transport undertakings.
• Battery-as-a-Service: Separation of battery ownership from vehicle operations, reducing upfront capital requirements and transferring battery performance risk to specialised providers.

Deployment Challenges

Infrastructural Challenges

The operations of electric bus fleets in India encounters many technical and operational challenges needing co-ordinated solutions and among multiple stakeholders.

Interoperability between charging standards represents a critical concern, with Bharat AC/DC specifications, CCS2 protocols, and proprietary charging systems creating potential compatibility issues.

The absence of universal charging standards forces fleet operators to make strategic decisions about charging infrastructure investments while considering long-term vehicle procurement flexibility and maintenance standardisation requirements.

Charging speed variations compound these interoperability challenges, with slow charging systems operating at 30-60 kW requiring 6-8 hours for complete charging cycles, while fast charging alternatives at 120-150 kW can complete charging in 2-3 hours.

Ultra-fast charging systems exceeding 200 kW enable opportunity charging scenarios but require substantial grid infrastructure investments ranging from ₹40-50 lakhs per charging point plus associated electrical infrastructure costs.

Skill development challenges

Workforce upskilling represents another challenge requiring comprehensive training programs for drivers, maintenance technicians, and operational management personnel.

Electric bus operations demand understanding of high-voltage safety procedures, battery management protocols, charging system operations, and diagnostic procedures that differ significantly from conventional diesel bus maintenance.

Successful implementations require structured training programs addressing both technical competencies and operational safety requirements while building organisational capabilities for ongoing technology evolution.

Personnel need to adapt to this technology as a helpful tool rather than working blindly at the depots. Skill development involves more than teaching on-ground staff how to plug in the bus or manage charging schedules and driving techniques.

They must understand that electric vehicles require gentler handling than diesel vehicles. Additionally, staff need to become comfortable with the technology itself and comprehend why the metrics displayed on their screens are important for effective operation.

Geography-based Challenges

Real-world performance challenges in India’s diverse climate conditions test the resilience and efficiency of electric bus systems. Monsoon seasons introduce concerns about electrical system integrity, charging infrastructure protection, and operational continuity during extreme weather events.

High ambient temperatures during summer months impact battery performance and air conditioning system energy consumption, while dust and particulate matter exposure requires enhanced filtration and maintenance protocols.

Temperature extremes ranging from below-freezing conditions in northern regions to temperatures exceeding 45°C in desert areas demand battery thermal management systems capable of maintaining optimal performance across these operational environments.

Adoption Patterns

Urban fleet electrification has progressed more rapidly than intercity applications, driven by supportive infrastructure availability, shorter route distances, and concentrated operational patterns that align well with current battery technology capabilities.

Major metropolitan areas including Bengaluru, Delhi, Hyderabad, and Mumbai have emerged as early adopters, benefiting from dedicated charging infrastructure investments and operational expertise development through pilot deployments.

Municipal corporations have taken leadership roles in driving adoption through procurement policies, infrastructure development, and operational integration with existing public transportation systems.

State Transport Undertakings (STUs) face more complex challenges related to financial sustainability, route optimisation across diverse geographical conditions, and coordination with state-level policy initiatives.

Private operators are increasingly participating in electric bus deployments through innovative financing arrangements and partnership models that leverage their operational expertise while accessing capital through specialised financing facilities.

Original Equipment Manufacturers (OEMs) have significantly influenced adoption patterns:

• Tata Motors: 1,431 electric bus registrations in 2024, 40% market share.
• Olectra Greentech: 17.7% market share.
• JBM Auto: 15.6% market share.

To streamline operations and effectively maintain their fleets, these OEMs partner with fleet management and EV fleet digitization vendors like Kazam throughout India.

How Kazam is supporting fleet electrification

Any prospective solution for this transition has to be grounded in a deep understanding of the technical, operational, and financial realities of the Indian market.

Kazam’s partnership with bus operators and depot managers begins well before the first electric bus ever rolls out. Our engagement starts at the drawing board, with deep consultations to help fleet owners plan the most suitable charging infrastructure for their specific business and operational realities.

Through years of field experience, we’ve seen how pivotal it is to select the right mix of chargers, ensure correct sizing of electrical infrastructure, set up robust contracting with third-party vendors, and even train on-ground personnel for day-to-day operations and safety.

Kazam provides holistic, hands-on support at every step: from infrastructure design to vendor selection, capacity planning, and workforce enablement.

Once the foundation is set, Kazam’s Charge Point Management System (CPMS) becomes the nerve centre of ongoing bus depot operations. Uniquely, Kazam’s CPMS is hardware-agnostic, integrating seamlessly not just with Kazam-branded chargers, but every other OCPP-compliant charging station available in the market today. This means our clients are never locked in; they enjoy flexibility across vendor ecosystems and backward compatibility as technologies advance.

The sophistication of Kazam’s CPMS extends to every detail of the charging process. It orchestrates smart vehicle queuing: determining which bus should charge, on which charger, and when, based on route assignments, battery state-of-charge (SOC), depot and en-route charging opportunities, and time-based priorities.

For operators managing both city and intercity routes, the system analyses routes and identifies optimal charging points along the operational corridor, always aiming to maximise mileage and ensure zero unplanned stoppages.

Optimising for per-kilometre costs

At the core of our software is a focus on improving per-kilometre returns on investment (ROI), a top priority for every fleet operator in today’s cost-sensitive environment.

Kazam’s system actively minimises wasted charge cycles, reduces operational idle time, and intelligently loads shifts to non-peak energy periods, driving both operational savings and improved vehicle health.

When evaluating per kilometre costs under a Gross Cost Contract (GCC) system for electric bus fleets, it is essential to account for all operational, infrastructure, and long-term asset risks. Each of the following components significantly impacts the overall cost and the fleet’s profitability:

• Workforce Costs
  • Includes salaries, benefits, and training for drivers, schedulers, on-ground operational staff, and depot management.
  • Covers continuous upskilling required due to emerging electric vehicle (EV) technologies, high-voltage safety, and operational compliance.
• Maintenance and Service
  • Regular and preventive maintenance of buses, chargers, energy management systems, and depot infrastructure.
  • Covers service contracts, spares inventory, and rapid response teams to reduce downtime.
  • Incorporates technology-specific care, such as periodic battery health checks and charger calibration, which are critical for long-term asset health.
• Electricity Costs
  • Comprises energy consumed for traction (bus propulsion), auxiliary loads (lighting, HVAC, depot operations), and charging losses (AC-DC conversion, idle chargers).
  • Factors real-time electricity tariffs, including time-of-day (TOD) billing, peak load charges, sanctioned load penalties, and possible demand response incentives.
• Risk of Battery Life and Lifetime Value
  • Recognise the depreciation and replacement risk of on-board batteries, a key variable for total cost of ownership (TCO).
  • Incorporates projected battery life in cycles or kilometres, performance degradation, warranty/guarantee terms, and possible value realisation from second-life or repurposing.
  • Includes financial provisions for mid-life battery swaps (if required) and factors in the residual value at contract end.

Reporting and Data Visibility

Kazam’s EV Depot Digitization suite provides comprehensive reporting for fleet owners and operators through transparent, actionable metrics across every aspect of depot energy and fleet utilisation. Some of the reports are as follows:

• Charger Gun Cycle Report: Monitor connector health by tracking usage out of 10,000 charge cycles to plan timely replacements.
• Hub Load Profile Report: Analyse hourly energy use across devices to optimise sanctioned load and unlock up to 30% more capacity.
• Temperature Report: Track inlet-to-outlet charger temps per session to prevent heat-related shutdowns.
• Device Utilisation Report: Pinpoint chargers operating below 20% capacity to improve infrastructure ROI.
• Hub Usage Profile: Compare available vs. consumed energy, highlighting hubs running at <50% utilisation for growth planning.
• Bus Charging Session Report: Group 4-hour session windows to identify retries, cutting session failure rate by up to 25%.
• Battery Ageing Report: Track changes in kWh per 1% SoC gain to detect battery degradation early, often before range loss is visible.
• Charging Attempt Tracker: Flag chargers or vehicles needing >2 attempts per session to boost first-time success rate.
• SoC Start-End Report: Visualise charging behaviour and identify >30% sessions exceeding healthy SoC thresholds (20–80%).
• Dual Session Report: Spot dual-gun usage within 5-minute windows to improve load distribution on high-demand chargers.
• Carbon Footprint Report: Quantify emissions from kWh consumed, helping report savings on CO₂ per hub/month.
• EV Current and Demand Report: Detect sub-threshold current dips and reduce charge-time anomalies

Benefits

This end-to-end transparency allows operators to monitor and manage energy flow at every stage, grid intake, charging infrastructure, and vehicle consumption, enabling precise identification and mitigation of losses, as well as optimised energy allocation. The main benefits are:

• Reduction in Operational Downtime and Charging Bottlenecks: Automated, data-driven charging management has led to smoother shift transitions and higher vehicle availability, directly improving service reliability.
• Improved Fleet Utilisation Rates and Battery Lifecycle Extension: Intelligent load balancing and predictive maintenance have resulted in fewer unplanned outages and slower battery degradation, keeping vehicles on the road longer and maximising return on investment.
• Enhanced Data-Driven Decision-Making: Real-time analytics and historical performance data empower fleet managers to optimise routes, align charging schedules with operational demand, and adapt deployment strategies for greater efficiency and cost savings.

Beyond analytics, all of this knowledge serves a single focus: to support operators in running high-ROI, future-proof electric fleets. With our consultative engagement, robust and flexible CPMS software, and full-spectrum depot intelligence, Kazam not only addresses the complexities of electric fleet operations, but empowers operators with the clarity and tools they need to scale with confidence.

Conclusion

The combination of supportive policy frameworks, improving technology economics, and growing operational expertise positions India’s electric bus sector for accelerated growth over the next decade. As the industry matures, continued innovation in battery technology, charging infrastructure, and operational management systems will further enhance the value proposition for electric bus operations across India’s diverse transportation landscape.

Through platforms like Kazam’s integrated management solutions, fleet operators gain access to the sophisticated data analytics, energy optimisation capabilities, and predictive maintenance tools necessary to maximise the benefits of electric bus operations while solving for the complexities of this transition.