The US-Israel war on Iran has driven India to reassess its heavy reliance on imported oil and gas. With the transport sector consuming about half of the country's oil use - of which about 90% is imported - it offers the clearest opportunity to reduce dependence. In response, GoI has proposed amendments to Central Motor Vehicles Rules (CMVR) to formally enable higher ethanol blends, including E85 (85% ethanol) and E100, allowing vehicles to run on near-pure ethanol.
Creating regulatory space is sensible. But it shouldn't preclude alternative pathways. Optimal role of ethanol in the fuel mix must be guided by rigorous life-cycle assessment. At current tech levels, scaling ethanol implies greater use of sugarcane, rice or maize, raising concerns around groundwater depletion, land use and food security. These trade-offs extend to pricing conflicts between crops and fuel, as well as broader social impacts. Proposals to import GMO maize, for instance, from the US may ease supply constraints or support trade negotiations, but risk replacing one import dependence with another. Costs and embedded emissions of transporting ethanol also warrant scrutiny. On the demand side, vehicle design should prioritise fuel-flexible engines that can accommodate varying ethanol blends without efficiency losses. Advances in 2nd- and 3rd-gen ethanol technologies for vehicles could materially reshape this choice matrix.
As GoI awaits feedback from stakeholders on proposed amendments, the key question is: what are the best options to reduce both import dependence and the transport sector's carbon footprint? Ethanol will likely be part of the mix, alongside EVs and fuel cells. A 360° assessment is essential before final decisions are made.
Creating regulatory space is sensible. But it shouldn't preclude alternative pathways. Optimal role of ethanol in the fuel mix must be guided by rigorous life-cycle assessment. At current tech levels, scaling ethanol implies greater use of sugarcane, rice or maize, raising concerns around groundwater depletion, land use and food security. These trade-offs extend to pricing conflicts between crops and fuel, as well as broader social impacts. Proposals to import GMO maize, for instance, from the US may ease supply constraints or support trade negotiations, but risk replacing one import dependence with another. Costs and embedded emissions of transporting ethanol also warrant scrutiny. On the demand side, vehicle design should prioritise fuel-flexible engines that can accommodate varying ethanol blends without efficiency losses. Advances in 2nd- and 3rd-gen ethanol technologies for vehicles could materially reshape this choice matrix.
As GoI awaits feedback from stakeholders on proposed amendments, the key question is: what are the best options to reduce both import dependence and the transport sector's carbon footprint? Ethanol will likely be part of the mix, alongside EVs and fuel cells. A 360° assessment is essential before final decisions are made.
