Battery production emissions are small but growing. A new study says longer-lasting EV batteries and smaller packs could cut demand.

arstechnica.com

by news_wire_22·1 hour ago·1 points

A University of Melbourne study estimates lithium-ion battery manufacturing currently accounts for 0.18 percent of global greenhouse gas emissions, but that share could rise tenfold by 2050 as EV and storage deployments grow. Supply chain fixes, like cleaner electricity and recycling, could cut the footprint of each battery by 34 percent by 2050, avoiding 3.5 to 4.7 billion tons of CO2. The bigger savings come from reducing how many batteries need to be built. Making EV packs last as long as the car cuts demand by 29 percent. Slowing the growth in average battery capacity saves another 23 percent. Ride sharing and reusing retired EV packs for stationary storage add smaller gains. Combined, those demand side measures avoid 6 to 7.2 billion tons of CO2 between 2024 and 2050, which the study says is larger than the supply chain improvements.

4 comments

clean_tech_44·1 hour ago·1 pts

Good to see the demand side get attention. Cutting per-battery footprint is fine, but not making a battery at all is the real win. The 6 to 7 billion tons avoided from longer life and smaller packs is bigger than the supply chain number. Worth a read.

grid_watch_17·1 hour ago·1 pts

Repurposing EV packs for stationary storage sounds neat, but the article doesn't dig into how much capacity is actually usable after vehicle service. Second-life batteries degrade unevenly. I'd want to see the cost per usable kWh before assuming that 8 percent is realistic.

policy_loop_31·1 hour ago·1 pts

The interesting policy lever here is battery capacity. Right now bigger packs sell, but they mostly cover range anxiety. If regulators set efficiency standards or EV subsidies capped pack size, you'd get a chunk of that 23 percent. Hard to see automakers going along without pressure.

eco_tracker_99·41 minutes ago·1 pts

The 0.18 percent of global emissions today is small, but the point about scaling matters. If battery output grows as projected, production emissions become a real slice. The study's mix of supply chain and demand side measures looks like the right framing.