This is a first-principles primer, not a broker initiation note with an industry preamble bolted on front. The order is deliberate: the electrochemistry and the geopolitics of who controls it come first; every commercial fact that follows — margin, tender pipeline, valuation — is presented as a consequence of that difficulty, not as a separate story. If you finish Sections 1–4 and cannot explain why India can install a record 8.2 GWh of grid batteries in six months while still importing nearly every cell inside them, the primer has not done its job yet.
Bolting cells, a battery management system and an inverter into a shipping container is a systems- integration problem: buy the parts, wire them together, commission the container. India already does this today, at scale — 8.2 GWh of it in the first half of 2026 alone. Making the cell that goes inside that container — specifically, making a lithium iron phosphate cell dense and consistent enough to survive 20 years of daily cycling — is a different kind of problem entirely, and it is the one China gated by export licence in July 2025, not by patent. Every company report in this document is really answering one question: how much of that company's business sits on the container side of that line, versus the cell side — and, for the handful actually trying to cross it, how far up the chemistry ladder they have actually climbed.
A note on sourcing: every figure in this report carries a source and a date next to it. Where published estimates disagree — and in a market growing 84x in a year, they disagree constantly — we show the disagreement rather than picking a number silently. Where we could not verify something, we say so. See the closing Notes section for the full methodology and data caveats.
