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AI supply chain term

BESS (Battery Energy Storage)

BESS is a large-scale battery installation that stores electricity and discharges it on demand to balance supply, smooth peaks, and back up the grid.

What it means

A Battery Energy Storage System (BESS) is a grid-scale array of batteries, usually lithium-ion, that charges when power is abundant and discharges when it is scarce or expensive. In the AI supply chain, BESS sits alongside the grid and on-site generation as a way to firm up intermittent renewables, shave demand peaks, and bridge short outages so a data center can keep drawing steady power. As grid interconnection becomes the binding constraint on AI buildout, storage has become the standard workaround, letting operators and utilities extract more usable capacity from existing connections. That makes BESS a lever against the power bottleneck, but also a dependency of its own: it adds cost, relies on battery cell supply chains, and shifts rather than eliminates the underlying scarcity of firm generation.

Why it matters to investors

Battery storage is becoming a default response to grid constraints, so demand flows to system integrators and the battery-cell makers behind them. It relieves some of the power bottleneck for AI operators while creating exposure to lithium-ion cell supply and pricing.

See BESS in the AI value chainIts live model score, why it matters, and every company exposed to it.

Companies on this part of the chain

Fluence Energy, Inc.FLNCVistra CorpVSTNextEra EnergyNEEContemporary Amperex Technology Co., Limited300750.SZ

Named to show where the term sits in the AI supply chain — research, not advice, and never a recommendation to buy or sell.

Related terms

Data-center powerPower Usage Effectiveness — total facility power divided by IT power; lower is more efficient.Interconnection queueThe interconnection queue is the waiting line of projects seeking approval and physical connection to the power grid before they can draw or deliver electricity.Behind-the-meter powerBehind-the-meter power is electricity generated on-site at a data center, on the customer's side of the utility meter, rather than drawn from the public grid.PPA (Power Purchase Agreement)A PPA is a long-term contract in which a data center or its operator agrees to buy electricity from a specific generator at a set price and volume for years at a time.

See BESS in the live AI chain.

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THE ENTITY is an educational read on the AI supply chain — research, not investment advice. It explains how the chain works and who sits where, never price targets or buy/sell calls.