Rivian and Redwood Plan Second-Life Battery Storage at Illinois EV Plant

Industrial Power Demand Is the Bigger Story

The partnership is not only about recycling or sustainability. It is also about electricity demand. Straubel said demand is rising faster than the grid can expand, creating a constraint on industrial growth. At the same time, the United States already has a growing base of domestic battery assets in the market. Redwood’s thesis is that those batteries represent an energy resource, not just future recycling feedstock.

For Rivian, the system offers a way to deploy stored power at its own factory during expensive or constrained periods. That can reduce peak grid demand and help the company avoid buying more expensive electricity when demand is high. In a manufacturing setting, where energy use is large and schedules matter, storage can become an operating tool rather than a demonstration project.

The project also illustrates how EV supply chains and grid infrastructure are beginning to overlap. Automakers, battery recyclers, storage developers and large electricity users are increasingly working across boundaries that used to be separate. A battery pack can be part of a vehicle, then part of a factory energy system, and eventually a source of recoverable materials.

A Scalable Model, If the Operations Work

Rivian said Redwood’s storage system is scalable and offers cost benefits by using proven EV batteries. The most important test will be operational: whether second-life packs can be aggregated, monitored and dispatched reliably enough to meet industrial energy needs.

If that model works, it could create a bridge between today’s EV battery fleet and tomorrow’s grid storage demand. The U.S. market is accumulating more battery packs each year as EV deployment grows. Not all of those packs will be suitable for reuse, and each project will need safety, diagnostics and integration work. But the supply base is real, and so is the demand for fast-deploying storage.

The Rivian-Redwood project is modest in grid terms, with an initial 10 MWh system, but it is meaningful because it connects circular battery use to a live manufacturing site. It shows how energy storage can be built from assets already inside the domestic EV ecosystem, potentially reducing the need to wait for new grid infrastructure before adding flexible capacity where power demand is rising.

This article is based on reporting by Utility Dive. Read the original article.