Electric, E20 or hydrogen: which fuel is actually better?

Ask which fuel is better and you will hear three confident answers, usually from three people selling three different things. The battery maker says electric. The ethanol industry says E20. The electrolyser company says hydrogen. Each answer is true somewhere and wrong somewhere else, and the quickest way to spot a weak argument in this debate is to notice that it comes with no conditions attached. For a business deciding where its vehicles or operations go next, the useful question is not which fuel wins in general. It is which fuel wins for your duty cycle, your geography, your grid and your timeline. That is a mapping exercise, not a slogan, and this article sketches the map.

Battery electric

The case for electric rests on physics. A battery drivetrain converts far more of its input energy into motion than any combustion engine, and it emits nothing at the tailpipe, which matters enormously in cities where air quality is the immediate problem. Running costs per kilometre are typically lower, and maintenance is simpler.

The honest caveats are real. An electric vehicle is only as clean as the grid that charges it, and India still generates a majority of its electricity from coal, even as renewable capacity grows quickly. Most lifecycle studies still find that an EV emits less over its life than an equivalent petrol vehicle even on today's grid, but the advantage is modest now and widens as the grid cleans up. Charging infrastructure remains uneven outside cities, upfront prices are higher, and the battery supply chain carries its own footprint and its own geopolitical concentration.

E20

E20 is petrol blended with 20 per cent ethanol, and its defining advantage is that it requires almost nothing of you. India has already made it the standard grade at pumps nationwide, so the existing fleet and the existing fuel network carry it today, with no new vehicles, chargers or refuelling stations to buy. The ethanol is produced domestically, which displaces some imported crude and gives the programme a genuine energy security and rural economy rationale.

The limitations are equally structural. Ethanol carries less energy per litre than petrol, so a tank does not take a vehicle quite as far, which is the root of a lively public argument we return to below. Scaling ethanol raises feedstock questions, because crops grown for fuel compete for land and water with crops grown for food. Vehicles built before manufacturers moved to E20 compatible materials were not designed for the blend, and above all, E20 is still mostly petrol. A blend reduces fossil fuel use at the margin. It does not remove it.

Hydrogen

Hydrogen's appeal is energy density and speed. It stores a lot of energy per kilogram and refuels in minutes, which is attractive for heavy, long distance duty cycles where batteries become weight and charging stops become lost revenue.

The caveats here are the largest of the three. Making hydrogen from renewable electricity, compressing or liquefying it, moving it and converting it back into motion loses well over half the energy along the way, far more than charging a battery loses. Most hydrogen produced today is made from fossil fuels rather than renewables, so a hydrogen vehicle is only as clean as the hydrogen behind it. Refuelling infrastructure barely exists, and in India the transport application sits at the pilot stage, with government backed trials of hydrogen trucks and buses running on selected routes under the National Green Hydrogen Mission. Costs per kilometre currently sit well above diesel, which is why hydrogen transport is a pathway to watch rather than one to buy today.

So which is better?

It depends, and the dependence is not a dodge. It is the answer. The deciding variables are duty cycle, geography, grid intensity, timeline and what you already operate, and different combinations genuinely produce different winners.

A city delivery fleet on short, predictable routes that return to a depot every night is close to the ideal electric case: tailpipe emissions matter most in cities, depot charging sidesteps the public infrastructure gap, and high daily mileage lets the lower running costs pay back the purchase price. An existing petrol car or two wheeler fleet in the near term does not really face a choice at all, because E20 is what now comes out of the pump, and the practical work is checking compatibility across the older end of the fleet rather than debating pathways. Long haul heavy trucking and high temperature industrial heat are where hydrogen deserves a place on the watchlist, because batteries struggle hardest there, but anyone modelling that route should count the conversion losses and ask where genuinely green hydrogen would come from before committing.

This is the same logic we apply to sustainability decisions generally: the move that fits depends on the situation you are actually in, which is why we map strategy by scenario rather than by framework. The mapping only works if you know your own numbers first, which usually means getting the underlying data in order before picking a pathway.

A note on the E20 mileage debate, since it is live in India: carmakers and many motorists report that vehicles cover somewhat less distance per litre on E20 than on lower blends, which is consistent with ethanol's lower energy content. The government's position is that extensive testing found no compatibility or performance risk and that real world mileage depends on many factors beyond the fuel itself.

Frequently asked questions

Is an electric vehicle really cleaner if the electricity comes from coal?

On the current Indian grid, most lifecycle studies find a modest advantage for the EV over an equivalent petrol vehicle, mainly because the drivetrain is so much more efficient. The more important point is directional: the same vehicle gets cleaner every year the grid does, while a combustion vehicle never improves after purchase.

Should we wait for hydrogen before committing to anything?

For most road fleets, no. Hydrogen transport in India is at the trial stage, the fuel is costly, and most of today's supply is not green. Watching the heavy duty pilots is sensible. Deferring an otherwise clear electric or E20 decision because hydrogen might arrive is usually just a way of doing nothing.

Does E20 harm older vehicles?

Vehicles built before manufacturers adopted E20 compatible materials were not designed for the blend, and this is where the public debate concentrates. Official testing reports no compatibility problems, while some manufacturers and owners remain cautious. For a fleet, the practical step is to check each model's stated compatibility rather than rely on either side of the argument.