ICCT maps India's EV battery needs through 2040

The International Council on Clean Transportation has published a study tracking how India's electric vehicle adoption could shape the country's battery capacity needs between 2026 and 2040. The report, dated September 29, 2026, sits at the intersection of two policy tracks: fuel economy regulations for conventional vehicles and the electrification pathways that would replace them.

India's fuel economy norms have long set the efficiency bar for petrol and diesel cars. The ICCT analysis looks at what happens when those same regulatory tools get pointed at electrification, and how much battery manufacturing capacity the country would need to build to keep pace.

Why the two tracks are linked

Fuel economy rules push automakers to squeeze more kilometres out of every litre. Electrification pathways push them toward plugging in instead. The ICCT study treats these as connected levers rather than separate policies. A tighter efficiency standard buys time; a faster EV shift changes what gets built and where.

The 2026, 2040 window matters because battery plants take years to plan, permit and commission. If India's EV sales grow faster than its cell manufacturing, the gap gets filled by imports. If capacity arrives ahead of demand, plants sit idle. The ICCT report lays out the adoption range and the corresponding capacity range.

What the numbers cover

• Electric vehicle adoption trajectories for India from 2026 to 2040
• Battery capacity needs tied to those adoption pathways
• The role of fuel economy regulations in shaping both

The study does not offer a single forecast. It maps scenarios. That's the honest way to do it, given how much depends on policy decisions that haven't been made yet. Battery prices, domestic cell manufacturing incentives, charging infrastructure and state-level EV policies all move the needle.

India has been pushing domestic battery production through schemes aimed at cutting import dependence. Several giga-factory announcements have followed. But the ICCT's framing suggests the question isn't just how many plants get built. It's whether the timing lines up with the vehicle parc.

The regulatory question

Fuel economy regulations in India are set by the Bureau of Energy Efficiency under the Energy Conservation Act. The current norms run through 2022, 2023, with discussions on the next phase ongoing. How strictly those norms are enforced affects how quickly automakers pivot to electric drivetrains.

The ICCT has tracked India's fuel economy standards for years. This latest report extends that work into the electrification era, treating battery capacity as a downstream consequence of upstream regulatory choices.

For policymakers, the takeaway is a planning problem. Battery capacity doesn't appear on demand. It needs years of lead time, land, water, skilled labour and a stable policy signal. The ICCT study puts a number on how much capacity the 2026, 2040 period might require under different adoption speeds.

The report is available on the ICCT website. It runs through 2040, which is far enough out to be useful for infrastructure planning and close enough to be relevant to current investment decisions.