VoltSeal, a distributed battery storage company serving commercial and industrial consumers, has raised $1.5 million in a pre-seed funding round led by Theia Ventures.

Rainmatter by Zerodha, Momentum Capital, Social Alpha, and angel investors also participated in the round.

The company deploys behind-the-meter lithium-iron-phosphate battery systems at commercial and industrial sites. It pairs the systems with a software-driven optimization layer.

The systems are designed to reduce reliance on diesel generators, shift electricity consumption across tariff periods, lower demand charges, and support electric vehicle charging loads.

Theia Ventures said the funding will support VoltSeal as it builds a distributed battery intelligence platform for India’s commercial and industrial sector.

India added nearly 547 MWh of battery energy storage capacity in 2025, around 26% year-over-year increase from over 433 MWh, as per Mercom India Research’s India’s Energy Storage Landscape 2H and Annual 2025 Report. India’s cumulative installed battery energy storage capacity reached almost 1,082 MWh as of December 2025.

VoltSeal installs modular batteries directly at the C&I sites. The company said each installation functions not only as a backup system but as a controllable energy asset that can store, discharge, and optimize power usage based on real-time conditions.

According to the company, its systems support time shifting, also called energy arbitrage, by storing electricity when power is cheaper or more abundant and discharging it during higher-priced periods.

VoltSeal also said its systems can provide peak shaving by discharging during short periods of high consumption, reducing demand charges for commercial and industrial consumers.

The company said it retains operational dispatch control over every deployed unit as a condition of each sale. This allows VoltSeal to operate the batteries as a network rather than only as site-level backup assets.

As deployments increase, the company plans to aggregate these systems into virtual power plants capable of providing grid-balancing services.

VoltSeal investor Rainmatter had made another energy storage investment deal earlier this year, investing in Delectrik Systems, a manufacturer of vanadium redox flow batteries.

This interest in energy storage investments can be seen on a global scale, with VC funding raised by energy storage companies in Q1 2026 increasing 9% YoY, with $1.2 billion in 26 deals compared to $1.1 billion in 18 deals in Q1 2025, and a 44% increase in deal count, according to Mercom’s Q1 2026 Funding and M&A for Energy Storage report.