Battery energy storage system is becoming a long-term operational efficiency investment for industries: Trontek’s Samrath S Kochar

How is BESS changing industrial energy economics?

Battery energy storage systems (BESS) are increasingly being viewed as a strategic tool for managing energy costs rather than just an alternative power source. With time-of-day tariffs, growing renewable penetration, and fluctuating grid prices, industries are looking at storage to optimize energy consumption, reduce peak demand charges, and improve power reliability.

A utility-scale or C&I BESS allows businesses to practice intelligent energy arbitrage—charging the system during low-tariff off-peak night hours or peak solar generation windows, and discharging it when grid tariffs spike. Beyond simple rate mitigation, BESS insulates heavy industries from open-access restrictions and volatile spot market power prices.

Advanced AI and intelligent software, deployed via an EMS (Energy Management System), acts as a critical engine to optimize operations through smart charging, peak shaving, and localized ancillary services. It enhances overall grid quality via rapid dynamic responses to both frequency and voltage variations, while boosting financial savings by managing the Deviation Settlement Mechanism (DSM) during sudden periods of inaccurate solar forecasts.

Hence, BESS gives businesses greater control over when and how they consume electricity, making energy costs more predictable.

From an industry standpoint, storage is shifting from being a capital expenditure to a long-term operational efficiency investment.

Why are industries moving beyond backup power solutions?

Industries today require uninterrupted operations, better energy quality, and lower operating costs. While diesel generators have traditionally served as backup, BESS offers additional value by supporting peak shaving, load shifting, renewable energy integration, and power quality management. It can also reduce dependence on diesel, helping industries lower both emissions and fuel expenses.

In modern decentralized energy planning, decentralized microgrids are becoming increasingly viable. However, a major operational challenge has emerged: solar PV power plants and rooftop arrays frequently trip during peak generation hours due to localized over-voltage, frequency deviations, and grid capacity saturation. Recognizing these critical stability gaps, the Government of Maharashtra pioneered a major regulatory shift through its Renewable Energy and Energy Storage (REES) Policy, mandating co-located storage for new renewable installations above 100 kW. In this framework, integrating a Battery Energy Storage System (BESS) provides the critical fast dynamic response and power conditioning required to eliminate peak-hour tripping, dramatically maximizing the efficiency, reliability, and overall commercial viability of clean energy assets.”

The conversation has therefore moved from “backup power” to “clean and energy optimization.”

As renewable penetration increases, how are storage applications evolving across grid-scale, commercial, and industrial segments?

One of the biggest challenges with renewable energy is intermittency. BESS allows excess solar or wind energy to be stored and used during periods of high demand or low generation. This improves renewable utilization while enhancing grid stability and energy security.

As India works towards its clean energy targets, storage will become a key enabler for dispatchable renewable power rather than an optional add-on.

Driven by this systemic commercial viability, a diverse array of advanced procurement and operating models is rapidly maturing across the Indian energy landscape, including FDRE (Firm and Dispatchable Renewable Energy), CfD (Contract for Difference) mechanisms, and merchant Open Access (OA) frameworks. Concurrently, storage configurations are shifting from general applications to specialized, duration-targeted sizing to optimize return on investment: 2-hour systems are being deployed to maximize fast-response ancillary services and real-time grid quality; 4-hour systems are standardizing around energy arbitrage and C&I peak shaving; and long-duration storage architectures exceeding 6 hours are being engineered to shift variable solar power into completely reliable, dispatchable, base-load green energy.

What will India’s storage market look like over the next five years?

India’s storage market is expected to witness significant growth as renewable capacity expands and policy support strengthens. Recent auctions indicate strong developer interest, while government initiatives such as viability gap funding (VGF), energy storage obligations, and large hybrid tenders are improving project economics.

Industry estimates suggest storage will become an essential part of both utility-scale and commercial & industrial energy infrastructure.

Further next five years will mark India’s transition from speculative storage pilots to multi-gigawatt-hour mainstream infrastructure.

Key growth verticals include:

Utility-Scale grid firming: The massive influx of intermittent renewable energy is making utility-scale BESS an immediate grid requirement.

C&I decarbonization: High commercial tariffs and cross-subsidy surcharges are making behind-the-meter storage highly lucrative for industries. Furthermore, strict environmental mandates—such as the rolling diesel generator bans in the National Capital Region (NCR)—are forcing a rapid switch to clean energy storage.

Solar-plus-storage ecosystems: The market is moving beyond simple battery packs toward integrated power electronics.

Further, the standard procurement architecture is shifting cleanly toward complex, dispatchable setups. Over the next five years, fixed-duration storage bids will diversify to match specific grid demands:

• 2-hour systems: Deployed to capture fast-response ancillary services, frequency regulation, and voltage support.
• 4-hour systems: Capturing the bulk of industrial time-of-day (ToD) tariff arbitrage and peak-shaving applications.
• More than 4-hour systems: Spearheading FDRE (Firm and Dispatchable Renewable Energy) and Contract for Difference (CfD) procurement models to fully replace fossil-fuel baseloads.

As battery storage projects move from pilots to large-scale deployments, what factors will determine their long-term performance and bankability?

Modern BESS projects increasingly rely on advanced battery management systems (BMS), remote monitoring, predictive diagnostics, and preventive maintenance to maximize uptime, improve battery life, and reduce unexpected failures.

Customers today evaluate not only battery specifications but also long-term service capability.

BESS are equipped with BAU, EMS and many a times with a proprietary, IoT-driven cloud monitoring platform that provides real-time remote diagnostics. This allows a specialized engineering team to identify micro-level cell anomalies weeks before a hardware fault occurs. Supported by service network and structured AMCs, a service provider can confidently provide a reliable and committed system uptime, ensuring industrial storage assets remain highly efficient and financially optimized throughout their decade-long lifecycle.

What misconceptions still exist around battery safety, lifecycle, and maintenance requirements?

One common misconception is that all battery technologies perform similarly or carry the same safety risks. In reality, battery chemistry, system design, thermal management, Battery Management Systems (BMS), and compliance with applicable standards significantly influence safety and performance.

Another misconception is that batteries require frequent replacement or extensive maintenance. With proper design and operation, modern battery systems are engineered for long service life and predictable performance.

We believe that LFP chemistry will still continue to dominate in BESS due to good safety and economy of scale. The BESS must be compliant to IEC, UL standards ensuring the safety starting from cells, rack/cluster, cabinet and container. Few of such standards can be UL9540, UL9540A, UL1973, IEC62619, IEC63056, UN38.3 and many more in the list.

What factors should industries consider when choosing among grid + BESS, solar + BESS, and hybrid systems?

There is no one-size-fits-all solution. The optimal configuration depends on the customer’s load profile, power reliability, renewable availability, and business objectives.

Generally, grid + BESS supports peak shaving and demand optimization, solar + BESS maximizes renewable utilization and lowers electricity costs, while solar + DG + BESS may be suitable for facilities requiring high reliability or operating in areas with unreliable grid supply.

For heavy manufacturing plants facing high peak-demand charges, Grid+BESS delivers immediate value via tariff arbitrage. Continuous-process industries with large rooftops deploy Solar+BESS to prevent mid-day inverter tripping and fully absorb green energy. In highly unstable grid regions,  hybrid Solar+DG+BESS matrix relegates the legacy diesel generator strictly to emergency backup, slashing fuel operational costs.