BESS Products
125kW to 5MWh — India
From a 125 kW cabinet to a 5 MWh container — every unit designed, installed and managed by PWRNXT. Fixed quarterly lease. Zero upfront capital. Sub-10ms switching. 98.5% uptime SLA.
CHOOSE YOUR BESS UNIT.
Four configurations from a 125 kW indoor cabinet to a 5 MWh hi-cube container — every unit on a fixed quarterly OpEx lease with zero upfront capital and PWRNXT's contractual 98.5% uptime SLA.
BUILT ON TIER-1 TECHNOLOGY
Every component is bankable, internationally certified, and chosen to outlast your lease. LFP chemistry, sub-10ms switching, aerosol fire suppression as standard across all variants.
| Parameter | PX-125 Cabinet |
PX-500 10ft Container |
PX-2000 20ft Container |
PX-5000 20ft Hi-Cube |
|---|---|---|---|---|
| Battery Chemistry | LFP | LFP | LFP | LFP |
| Nominal Energy | 261 kWh | 1,045 kWh | 2,000 kWh | 5,000 kWh |
| Usable Energy (90% DoD) | ~235 kWh | ~940 kWh | ~1,800 kWh | ~4,500 kWh |
| Cycle Life | 6,000+ cycles @ 80% DoD | |||
| Calendar Life | Up to 15 years | |||
| Depth of Discharge | Up to 90% usable (default 80% for longevity) | |||
| Battery Management | Active cell balancing · SoC / SoH / SoP · Fault isolation · Full protection suite | |||
| Physical Footprint | ~2.4 × 0.9 m | 3.0 × 2.4 m | 6.0 × 2.4 m | 6.0 × 2.4 m (HC) |
| Parameter | PX-125 Cabinet |
PX-500 10ft Container |
PX-2000 20ft Container |
PX-5000 20ft Hi-Cube |
|---|---|---|---|---|
| AC Rated Power | 125 kW | 500 kW | 1,000 kW | 500 kW × N |
| AC Output Voltage | 415 V ±10%, 3-phase — custom LT / HT on request | |||
| Round-Trip Efficiency | ≥ 88% | |||
| Grid Performance | ||||
| Switch-Over Time | <10 ms — PLCs and CNC machines never detect an outage | |||
| Grid Modes | Grid-tied · Islanding · Peak shaving · Time-of-Day arbitrage · Demand charge reduction | |||
| Solar Integration | Optional | Optional DC / AC | DC & AC coupled | DC & AC coupled |
| EMS & Monitoring | ||||
| Energy Management | PWRNXT proprietary EMS — optimises charge cycles against live tariffs in real time | |||
| Remote Monitoring | 24/7 Remote Operations Centre · State-of-Health analytics · Automated anomaly alerts | |||
| Uptime Guarantee | 98.5% contractual SLA — written into every lease | |||
Safety & Compliance Architecture
Each PWRNXT BESS deployment is engineered to meet rigorous international standards across every subsystem — from cell chemistry to grid interconnection — ensuring lender, insurer, and regulatory confidence.
Every unit ships with a full compliance dossier: cell-level certification (UL 9540A, IEC 62619), rack-level battery management (UL 9540A), PCS certification (UL 1741), fire and gas detection (IFC, NFPA 72), and complete installation signoff (NFPA 70, IEEE C2).
We Build It. We Run It. We Guarantee It.
Not a broker. Not a reseller. A fully integrated engineering operator with contractual skin in the game.
Design & Engineering
Custom sizing and architecture for every site — chemistry, PCS, thermal management, grid interface.
Tier-1 Procurement
Tier-1 cell and inverter OEMs — CATL, BYD, Sungrow, Delta — with multi-year capacity warranties.
EMS Operations
Proprietary EMS optimises every charge cycle against live tariffs and battery health in real time.
Critical Spares
Pre-positioned critical spares at every site — so faults get fixed in hours, not days.
We Don't Just Monitor. We Guarantee.
Monitoring is table stakes. We write performance into the contract.
Contractual Uptime SLA
Not a target. A contractual commitment — written into your lease, enforceable from day one.
On-Site MTTR
On-site engineer response within 24 hours for critical faults. Critical spares pre-positioned at every site.
Predictive Failure Window
We flag degradation 2–4 weeks before it becomes a failure. Zero surprise downtime events.
Remote Operations Centre
Continuous State-of-Health analytics and automated anomaly alerts — across every PWRNXT asset in the field.
Insight Before Investment. Decision-Ready Analysis.
PWRNXT's structured assessment methodology converts your operational reality into a board-ready investment case — rigorous diagnostics, precise sizing, and the commercial numbers your leadership needs to act.
- True diesel LCOE quantified per site — hidden costs surfaced and benchmarked against grid tariff
- Outage archaeology: frequency, duration, and production-loss cost per event
- Time-of-Day tariff mapping and demand-charge reduction opportunity scan
- Facility risk classification by operational criticality and power-quality exposure
- Load-profile analysis and demand characterisation across operating shifts
- BESS right-sizing: power (kW) and energy (kWh) matched to your actual load curve
- Infrastructure assessment — grid interconnect, civil, and single-line review
- Phased deployment sequencing to de-risk and stagger capital exposure
- IRR, NPV and payback modelled against your actual DG and grid costs
- Portfolio prioritisation: Tier 1/2/3 sites ranked by ROI, criticality, and ESG impact
- Board-ready scenario analysis — sensitivity runs on diesel price, tariff, and policy
- OpEx lease structure vs outright purchase — full TCO comparison
Share your energy bills and DG logs. We scope and revert within 2 business days.
Tell Us About Your Site.
Our engineering team reviews every enquiry and responds within 2 business days with a unit recommendation and lease indicative.
Write to us.
contact@pwrnxt.in
Tell us your site's power requirement and location. We'll recommend the right BESS unit and provide a lease indicative within 2 business days.
Prefer WhatsApp?
💬 Chat with us on WhatsApp →In the meantime, feel free to WhatsApp us or call +91 99717 73884.
YOUR BESS. YOUR USE CASE.
Every PWRNXT product is built for a specific operating reality. Choose the application that matches your site.
Replace Your Diesel Generator
Diesel is costing you ₹25–30/kWh all-in. PWRNXT BESS delivers the same backup power for ₹7–8/kWh — with sub-10ms switching your PLCs never detect, zero NOx or PM2.5 emissions, and a contractual 98.5% uptime SLA replacing your current "no formal SLA" DG arrangement.
Solar ROI Recovery — Maharashtra
Free banking is over. Maharashtra's MERC policy means every unit exported earns ₹2.82 but every unit imported in the evening D-zone costs ₹14.31 — a ₹11.49/unit gap that destroys your solar ROI. PWRNXT BESS closes that gap by storing your solar generation and dispatching it precisely during peak hours.