BARRELA StenJaan Group enterprise

Manufacturing, IoT-backed and AI-powered.

Solar PV modules, inverters, UPS and batteries built on automated production lines, plus balance-of-system products for every power vertical through our OEM tie-ups.

An industrial robot and a technician in a cleanroom production line

Core product lines.

Made in-house on connected, automated lines, and backed by data from every unit in the field.

Solar PV modules

Latest-technology modules from a fully automatic, robotic production line, with every module tested and traced before it leaves the factory.

  • High-efficiency monocrystalline and bifacial formats
  • Robotic cell stringing, lay-up and framing
  • Inline EL and IV testing on every module
  • Serial-level traceability in BARREL OS

Inverters and UPS

Power electronics with IoT connectivity and AI-assisted monitoring built in, from rooftop systems to utility plants and critical loads.

  • String and central solar inverters
  • Hybrid inverters for solar plus storage
  • Online UPS for homes, businesses and critical loads
  • Remote monitoring, alerts and firmware updates

Batteries

Lithium battery packs engineered for each application, from a single home to the grid, each with a connected battery management system.

  • Cell selection, pack design and assembly
  • Battery management system on every pack
  • Live state of charge and health over IoT
  • Second-life and recycling pathways

Residential

Home backup and rooftop solar storage

Power equipment and tools

Packs for cordless tools and portable power equipment

Solar lighting

Batteries for solar street, area and garden lights

Grid-scale storage

Containerised BESS for utilities and C&I sites

IoT inside. AI on top.

Every product we make is connected, so it keeps reporting long after it is installed, and BARREL AI turns that data into better products and better plants.

Connected at the source

Every product ships with IoT telemetry, so performance data flows from the first day of operation.

AI-assisted monitoring

Anomaly detection and predictive maintenance flag faults before they cost generation.

Robotic, data-driven production

Automated lines record every step, so each unit is traceable from cell to dispatch.

One record in BARREL OS

Warranty, service history and field performance sit with the project that uses the product.

Balance of system, through OEM tie-ups.

Manufactured with OEM partners or imported, for every vertical and every stage of the power value chain.

Cables and accessories

Power, solar and control cabling with the accessories to terminate, route and protect it.

  • LT and HT power cables
  • Solar DC cables
  • Control and instrumentation cables
  • Lugs, glands and terminations
  • Cable trays and ducts
  • Earthing and lightning protection

Planning a power project? Let's build it on BARREL.

Tell us about your project, portfolio or requirement — our team will get back to you.

© 2026 Bharat Atom Renewable Resources Energy Limited