Battery Energy Storage Systems — Engineering-First EPC

Store Energy.
Cut Costs.
Never Stop.

Reduce electricity bills by up to 40%. Eliminate downtime. Store excess solar. Scale from 20 kWh to 20 MWh.

Peak Shaving Backup Power Solar Storage DG Replacement

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Custom sizing — Financial model — ROI analysis in 48 hours

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MW Storage Deployed
0
% Avg. Bill Reduction
4.9/5
Client Satisfaction
7+
Years Experience
The Problem

Why Businesses Need Energy Storage

Four challenges every industrial and commercial facility faces — and one solution that addresses them all.

Rising Electricity Costs

Tariffs increase 5-8% annually. Industrial rates are among the highest in Asia.

Maximum Demand Charges

40-60% of your bill comes from peak demand penalties, not units consumed.

Frequent Power Interruptions

Grid instability causes production losses, equipment damage, and safety risks.

Wasted Solar Energy

Excess daytime solar is exported cheaply. You need it after sunset.

Battery Energy Storage transforms these challenges into opportunities.
What is BESS?

Store Energy When It Is Cheap.
Use It When It Is Not.

A Battery Energy Storage System (BESS) captures electricity — from solar, grid, or DG — and stores it in advanced lithium batteries. When your demand peaks, the battery discharges instantly, shaving your costs and keeping operations running.

Think of it as a reservoir for electricity. Fill it during off-peak hours or with excess solar. Release it when tariffs spike or the grid fails. No fuel. No noise. No emissions. Just intelligent energy management.

< 20ms
Switchover Time
90%+
Round-Trip Efficiency
6000+
Cycle Life
15-20
Year Lifespan

How BESS Works

Solar / Grid / DG
Energy sources charge the battery
Battery Storage
LFP cells store energy efficiently
Factory / Facility
Discharge during peak hours or outages
Grid
Export excess or import during low-tariff
Benefits

What BESS Does for Your Business

Six powerful benefits that transform how you manage energy.

Reduce Electricity Bills

  • Peak shaving — discharge during peak tariff hours
  • Time-of-Day optimization — charge cheap, discharge expensive
  • Load shifting — move consumption to off-peak

Store Excess Solar

  • Do not waste generation — store instead of exporting at low rates
  • Use it after sunset — self-consumption up to 95%

Backup Critical Loads

  • Zero interruption — <20ms switchover
  • DG replacement — reduce diesel runtime by 80%
  • UPS enhancement — hours of backup, not minutes

Improve Power Quality

  • Voltage stability — regulate sags and surges
  • Frequency support — grid-compliant operation
  • Power factor improvement — avoid penalties

Reduce Carbon Emissions

  • Lower diesel usage — cut DG runtime dramatically
  • Lower CO2 footprint — meet ESG targets

Future Ready

  • Electric vehicles — EV charging integration
  • Microgrids — island-mode capability
  • Virtual power plants — grid services revenue
  • AI energy management — predictive optimization
Industries

Where BESS Works Best

From tea gardens to data centres — if you use electricity, you need storage.

Tea Estates

Cold Storages

Rice Mills

Food Processing

Manufacturing

Hospitals

Hotels

Commercial Buildings

Warehouses

Data Centres

EV Charging Stations

Shopping Malls

Solutions

Solutions for Every Scale

From a small commercial setup to utility-scale installations.

Residential

5 – 20 kWh

Home backup, solar storage, and time-of-day arbitrage for villas and apartments.

POPULAR

Commercial

20 – 200 kWh

Offices, hotels, hospitals, and retail. Peak shaving and backup for critical operations.

Industrial

200 kWh – 2 MWh

Factories, cold storages, and processing plants. Full demand management and DG replacement.

Utility

2 – 20 MWh+

Grid-scale storage, renewable firming, and virtual power plant participation.

Technology

AC Coupled vs Hybrid

Choose the right architecture for your facility.

Feature Hybrid AC Coupled
Existing Solar
New Solar
Retrofit CompatibilityLimitedExcellent
DG IntegrationGoodExcellent
Installation ComplexitySingle inverterSeparate inverters
Best ForNew installationsExisting solar + retrofit

Not sure which is right for you? Our engineers assess your existing infrastructure and recommend the optimal architecture.

Get a free assessment.

Applications

Ten Ways to Use BESS

One system. Multiple revenue streams and savings.

Peak Shaving

Load Shifting

Backup

Time-of-Day

Demand Mgmt

Microgrid

EV Charging

DG Optimization

Grid Support

Renewable Firming

Interactive Tool

SolarLogix Smart BESS Payback Calculator

Complete financial model for battery energy storage investment

Solar PV: 100 kWp
Battery PCS: 100 kW
Battery Energy: 100 kWh (1H BESS)
Project Cost: ₹70,00,000
GST: 12%
Total: ₹78,40,000

1 Customer details

2 Solar inputs

Annual generation130,000 units
%/year
%/year
₹/unit

3 Battery inputs

kW
kWh
Backup duration1.0 hour
%
%
Usable battery95 kWh
%/year

4 Factory consumption

units
kW
kVA

5 Power cut analysis

Annual downtime hours120 hours
%
Operational saving₹54,00,000

6 Diesel generator saving

DG saving₹1,10,000

7 Demand charge saving

₹/kVA
kVA
Annual demand saving₹1,26,000

8 Time of day saving

₹/unit
₹/unit
Difference₹4/unit
units
TOD saving₹1,31,400

9 O&M

%
%
%
Annual O&M₹1,05,000
Total project cost (with GST)₹78,40,000

Annual benefits

Solar saving₹10,40,000
DG saving₹1,10,000
Operational saving₹54,00,000
Demand charge saving₹1,26,000
TOD arbitrage saving₹1,31,400
Gross saving₹68,07,400
Less: O&M-₹1,05,000
Net annual saving₹67,02,400

Simple payback

Without GST1.0 year
With GST1.2 years
Payback
05 yrs

Financial KPIs

₹78.4L
Project cost
130K
Solar units/year
₹67.0L
Net annual saving
1.2
Payback (years)
855%
ROI
85%
IRR
₹6.1Cr
NPV (10%)
₹16.8Cr
Lifetime (25Y)

Environmental impact

106.6
Tonnes CO₂/year
5,076
Trees equivalent

12 Lifetime savings (25-year projection)

Year Solar saving Battery cap Tariff Net saving Cumulative CO₂ (t)

16 Analytics & charts

Solar generation (25 years)

Battery capacity fade

Electricity tariff increase

Annual cash flow

Cumulative cash flow

Investment vs savings

Carbon savings

Battery SOC illustration

85% DoD (Usable)

Usable: 95 kWh of 100 kWh

Before vs after electricity bill

Payback timeline

Our Process

From Consultation to Commissioning

A rigorous 9-step engineering process that ensures your BESS performs exactly as designed.

Consultation

Understand needs

Energy Audit

Baseline data

Load Analysis

Profile patterns

Simulation

Model behavior

Financial Model

ROI projection

Engineering

Detailed design

Installation

EPC execution

Commissioning

Testing & handover

Monitoring

SCADA & cloud

Technology

Our Technology Stack

End-to-end architecture from cell to cloud.

Battery Cells

LFP / NMC

Battery Pack

Modular design

Rack System

Scalable racks

BMS

Cell balancing

PCS

Power conversion

EMS

Energy mgmt

Transformer

Voltage step-up

SCADA

Local control

Cloud

Remote monitoring

Safety First

Built for Zero Compromise

Multi-layer safety architecture that exceeds international standards.

Thermal Runaway Protection

Cell-level temperature monitoring with predictive algorithms and automatic isolation.

Multi-Layer BMS

Three-tier battery management: cell, module, and system level protection with real-time balancing.

Fire Detection

Multi-sensor early warning: smoke, heat, gas, and VOC detection with zoned alerts.

Fire Suppression

Aerosol / clean agent suppression systems with automatic activation and manual override.

IP Rated Enclosure

IP54+ rated outdoor containers with thermal management for Indian climate conditions.

Emergency Shutdown

E-Stop at multiple levels with remote shutdown capability and fail-safe contactors.

Remote Monitoring

24/7 cloud monitoring with AI anomaly detection and predictive maintenance alerts.

Cyber Security

End-to-end encryption, secure protocols, and access control for critical infrastructure.

International Standards

IEC 62619, UL 9540A, UN 38.3, and CEA compliance for complete peace of mind.

Why Us

Why SolarLogix for BESS

This is where competitors lose. We do not just install batteries — we engineer energy solutions.

Engineering-First Approach

Every system is custom-engineered. No cookie-cutter solutions. No oversizing. No undersizing.

Customized Sizing

We simulate your actual load profile before recommending capacity. Not guesswork. Data-driven design.

Solar + BESS Expertise

We understand both generation and storage. That integration knowledge is rare and critical.

End-to-End EPC

From feasibility to commissioning to AMC — one partner, one accountability, one relationship.

SCADA Integration

Real-time monitoring dashboards with historical analytics, alerts, and performance reports.

Remote Monitoring

24/7 cloud-based monitoring with AI anomaly detection and predictive maintenance.

Preventive Maintenance

Scheduled health checks, firmware updates, and capacity testing to maximize battery life.

Lifetime Support

Dedicated service engineers, spare parts inventory, and 24/7 response for critical issues.

Performance-Focused Design

We optimize for total cost of ownership, not just upfront cost. That is the SolarLogix difference.

Knowledge Hub

Frequently Asked Questions

Everything you need to know about Battery Energy Storage Systems.

LFP (Lithium Iron Phosphate) batteries typically last 6,000 to 8,000 cycles, which translates to 15-20 years of operational life with proper maintenance. NMC batteries offer higher energy density but slightly shorter cycle life. SolarLogix designs systems with conservative depth-of-discharge (DOD) limits to maximize longevity.
LFP (Lithium Iron Phosphate) is generally preferred for stationary BESS due to longer cycle life, better thermal stability, and zero cobalt. NMC (Nickel Manganese Cobalt) offers higher energy density but is more suitable for mobile applications. For commercial and industrial BESS, we primarily recommend LFP for safety and longevity.
In many cases, yes. A properly sized BESS can replace DG for backup power, especially for facilities with predictable outage patterns. For sites with very long outages (6+ hours), a hybrid approach — BESS + smaller DG — often provides the best economics. Our energy audit determines the optimal configuration.
Absolutely. BESS can charge from the grid during off-peak hours and discharge during peak hours — a strategy called "grid arbitrage" or "time-of-day optimization." This is particularly effective in regions with significant peak-off-peak tariff differences, like many Indian states.
Yes, the EMS (Energy Management System) can be programmed to charge from the grid during low-tariff periods and discharge during high-tariff periods. This is a core revenue strategy for many commercial BESS installations. The system intelligently decides the optimal charge/discharge schedule based on your tariff structure and load profile.
With proper engineering, very safe. SolarLogix implements multi-layer protection: thermal runaway detection, fire suppression systems, IP-rated enclosures, emergency shutdown, and 24/7 remote monitoring. We use LFP chemistry which is inherently safer than NMC due to higher thermal stability. All installations comply with IEC 62619 and local fire safety norms.
BESS requires minimal maintenance compared to DG sets. Annual tasks include: capacity testing, thermal imaging, connection torque checks, firmware updates, and cooling system inspection. SolarLogix offers comprehensive AMC packages that include quarterly health checks and 24/7 remote monitoring.
SolarLogix provides: 5-year comprehensive system warranty, 10-year battery performance warranty (with capacity retention guarantees), and 5-year PCS/inverter warranty. Extended warranties and insurance options are available. All warranties are backed by manufacturer support and our service infrastructure.
Our LFP battery systems are rated for 6,000+ cycles at 80% DOD. At one cycle per day, that is over 16 years of daily operation. With conservative DOD settings (70%), cycle life extends to 8,000+ cycles. We design systems to never exceed safe DOD limits, ensuring you get the full rated life.
Our AC-coupled systems achieve 85-90% round-trip efficiency (from grid/solar to battery to load). Hybrid systems can reach 90-92% due to fewer conversion stages. This means for every 100 units you store, you get back 85-92 units — significantly better than pumped hydro or other storage technologies.
LFP batteries operate optimally between 15-35 degrees C. Our containerized systems include active thermal management (HVAC) to maintain ideal temperatures year-round. In extreme Indian summers, the cooling system ensures performance does not degrade. We also offer outdoor-rated enclosures with IP54+ protection.
Yes. Our modular rack-based design allows you to add battery modules as your needs grow. The EMS automatically recognizes and balances new modules. Many clients start with a smaller system and expand after seeing the savings. We design the initial infrastructure (PCS, transformer, switchgear) with expansion headroom.
Approvals vary by state and system size. Typically: electrical inspector approval, DISCOM net metering approval (if grid-connected), fire department NOC, and building plan approval for container placement. SolarLogix handles all approvals as part of our turnkey EPC service.
Currently, standalone BESS subsidies are limited in India. However, BESS integrated with solar may qualify for PM Surya Ghar or state-level solar subsidies. Some states offer capital subsidies for energy storage in specific sectors. We guide clients through available incentives and financing options.
Payback varies by application: 3-5 years for peak shaving in high-tariff states, 4-6 years for solar + storage, and 5-7 years for backup-only systems. With rising electricity tariffs and falling battery costs, payback periods are improving every year. Our financial models provide accurate projections based on your specific tariff structure.

Still have questions? Talk to our BESS engineers.

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