O2 Grid designs, validates and integrates advanced battery-based energy systems for industrial, automotive and off-grid applications.
We combine battery validation, BESS manufacturing, power electronics, mechanical engineering and industrial off-grid experience into one integrated technology platform.
O2 Grid is a cleantech engineering company focused on delivering products and services that address modern energy needs. We operate across battery validation, battery repurposing, BESS design and manufacturing, power electronics, battery logistics, industrial off-grid systems and reinforced concrete energy storage infrastructure.
We work at the intersection of batteries, electronics, mechanical engineering and civil infrastructure. This allows us to develop practical, safe and scalable energy solutions based on real operational experience — not just theoretical design.
Our systems are built, tested and operated in real industrial conditions. This gives us a level of insight that goes beyond paper engineering.
// OPERATIONAL SINCE 2024
O2 Grid Sp. z o.o. — Legnica, Poland
NIP/VAT: PL 6912582549
From battery cell to grid connection — we handle the full scope of battery-based energy system engineering, manufacturing and deployment.
O2 Grid continuously operates battery disassembly, module validation and repurposing processes. We validate EV battery packs and modules using dedicated hardware, software tools and controlled infrastructure.
Our power electronics team develops BMS and EMS solutions for battery energy storage applications. We work with embedded hardware, battery communication protocols, diagnostic systems and rapid prototyping.
Full product development capabilities including risk assessment, technical documentation, device design, manufacturing support and issuance of EU Declaration of Conformity.
Featured Product: Three-Phase Rectification Unit — connecting any AC generator to MPPT inverter input.
O2 Grid is developing its own BESS product family, including large-scale industrial systems and compact sub-30 kWh solutions for residential and small commercial applications.
O2 Grid uniquely focuses on reinforced concrete battery enclosures designed for underground installation — combining energy storage, civil engineering and safety-oriented design into one integrated product.
We validate our solutions at our own industrial site. Since May 2025, our off-grid system has been operating continuously without incidents — giving us practical experience in designing, installing and operating real industrial off-grid infrastructure.
O2 Grid has experience in battery transportation across Europe and Asia, including Ukraine, Malaysia and China. Together with partners, we developed compliant logistics processes and UN 3480-compatible packaging solutions.
With in-house power electronics and mechanical engineering capabilities, O2 Grid designs custom battery modules and packs for BESS, aerial drones, ground drones and other energy systems.
Our mechanical engineering team develops custom devices, fixtures and tooling based on real shop-floor experience. We specialise in battery repurposing infrastructure, where dedicated jigs, holders and safety mechanisms are essential.
O2 Grid combines civil engineering with energy storage expertise. We work with civil engineering partners to design and construct reinforced concrete battery enclosures for safer, more durable and more resilient energy storage installations.
Combining civil engineering with battery energy storage at this level of integration is uncommon in the market. Our approach enables safer long-term deployments, particularly for industrial and utility-scale applications where ground-level installation poses fire and environmental risks.
Whether you need battery validation, BESS development, power electronics, battery logistics, off-grid integration or custom engineering support — O2 Grid can help you move from concept to operational system.