Rivian’s Factory Batteries Come Full Circle: Old Packs Power New EVs in Redwood Deal

Rivian Automotive has turned a corner in its cost-cutting push. The electric-vehicle maker is repurposing more than 100 of its own second-life battery packs into a 10-megawatt-hour energy storage system at its Normal, Illinois, plant. Partner Redwood Materials handles the integration. This marks the largest such setup for any U.S. automaker.

The April 14 announcement lands amid Rivian’s ramp-up for mass-market models. First-quarter production hit 10,236 vehicles. Deliveries reached 10,365. Those figures align with expectations. The company holds its 2026 guidance at 62,000 to 67,000 deliveries. Yet shares hover around $16.85, down 14.5% year to date. Goldman Sachs trimmed its price target to $17 from $19, keeping a neutral stance while eyeing the R2 launch and autonomy progress, as noted in a Yahoo Finance report.

Second-life batteries retain over 50% capacity after vehicle duty. Rivian supplies the packs. Redwood’s Pack Manager technology weaves them into a unified Redwood Energy system. Dispatchable power flows on-site during peaks—like summer heat waves—slashing bills and easing grid pressure. No new infrastructure needed. Scalable from there.

“EVs represent a massive, distributed and highly competitive energy resource,” Rivian founder and CEO RJ Scaringe said in the company’s press release. “As energy needs grow, our grid needs to be flexible, secure, and affordable. Our partnership with Redwood enables us to utilize our vehicle’s batteries beyond the life of a vehicle and contribute to grid health and American competitiveness.”

Redwood founder JB Straubel, Tesla’s ex-CTO, sees broader potential. “Electricity demand is accelerating faster than the grid can expand, posing a constraint on industrial growth,” he stated in Redwood’s release. “Our partnership with Rivian shows how EV battery packs can be turned into dispatchable energy resources, bringing new capacity online quickly, supporting critical manufacturing, and reducing strain on the grid without waiting years for new infrastructure. This is a scalable model for how we add meaningful energy capacity in the near term.”

Straubel’s firm processes 20 gigawatt-hours of batteries yearly—90% of North America’s recycled lithium-ion volume. Redwood Energy launched last June with a 63-megawatt-hour microgrid for AI data center Crusoe Energy. Over a gigawatt-hour sits in the pipeline. Add 5 more gigawatt-hours next year. Projects scale to 100 megawatts.

The U.S. faces a storage crunch. Planners call for 600 gigawatt-hours by 2030. That’s Hoover Dam output for two months. EV fleets supply the fix: 5 million vehicles on roads hold 350 gigawatt-hours nearing end-of-life. Annual additions push 150 gigawatt-hours more. Second-life packs could meet half the market.

Rivian’s move fits industry patterns. Excess battery supply from slowed EV production shifts to stationary use. AI data centers devour power. General Motors feeds Redwood new and used packs. Ford plans a 2027 storage unit from idle capacity. Rivian closes its loop—old packs from R1 trucks and SUVs fuel R2 and R3 builds.

Costs drop fast. Peak power avoidance trims expenses. Grid upgrades? Skipped. Domestic assets stay home, dodging imports. Rivian’s plant gains reliability. Output steadies amid demand spikes.

But challenges linger. Rivian burns cash. Q1 deliveries met low bars. R2 production ramps next year. Investors watch margins. This deal signals efficiency gains. Yet Wall Street wants profits.

The Wall Street Journal called it a highlight of the battery-storage surge, noting Rivian’s system as the biggest repurposed setup for an auto maker in a recent article. InsideEVs framed it as EV and storage sectors converging, with Rivian leveraging packs that retain ample life post-vehicle, per its coverage.

And expansion looms. As Rivian fleets age, more packs flow in. The 10 MWh starts small. Scale follows. Grid operators take note. Manufacturers eye copycats. Redwood’s model spreads.

Rivian bets big on circularity. Batteries cycle from road to factory floor. Then recycling. Straubel pushes the chain. American edge sharpens. Demand surges. Supply adapts.

Short term: cost wins. Long term: grid transformation. Rivian’s plant proves the point.