We Need a Better CO2 Metric. Here It Is.
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Airlines are routinely reporting their fuel consumption.
Good. Airline CO2 emission models are improving and becoming more accessible.
Good. Companies are estimating their travel-related carbon emissions. Good.
Buyers are using the wrong KPIs to judge airlines on CO2
emissions. Not good. Travelers are using the wrong metric to choose the
least-harmful flight itinerary. Not good.
There is no question that measuring the absolute
quantity, e.g., 2,000 metric tons, of travel-CO2 emissions is necessary. This
absolute measure is vital, as it reports what must be reduced to protect the
climate.
The Relative Problem
The problem is with relative metrics, those designed to
compare CO2 emissions from one airline or travel program to another’s. Examples
of current relative metrics are CO2 per passenger or CO2 per mile flown. These current
metrics seem well-suited for the task of comparing airlines, benchmarking travel
programs and judging the climate impact of the various flight options in a city
pair.
It seems obvious that a smaller number, e.g., 200
kilograms CO2 per passenger, is better than a larger number. If that were true
(it’s not) then we should support anything that helps drive down this relative key
performance indicator. Let’s think harder about that.
Consider The Consequences
How can an airline make its CO2 per passenger or mile
flown metric smaller? One way is to place more economy seats in its aircraft.
The more seats, the bigger the denominator and the smaller the metric’s
value. How does an airline fill those
extra seats? By reducing its fares which increases the demand for travel. The
higher the demand, the more people flown, the more fuel burned.
Note there is no need for this airline to improve its
fuel efficiency or reduce its CO2 emissions. This airline will get good marks
on the per-passenger KPI purely as a result of its low fare, dense seating
business model. Worse, the low fares leave the airline little margin to invest
in sustainable aviation technology.
Corporate travel programs using the current CO2 per
passenger or mile KPI risk steering their travelers to airlines with a low-cost
business model. Travelers looking at the CO2 per passenger metric in a shopping
tool will think the low fare, high density carrier is the best choice,
climate-wise.
But low-priced tickets mean more trips taken from the
corporate travel budget. Low trip costs make it easier to approve travel for
low-value meetings. The result is more low-value travel, not less, and less
profit margin for airlines.
Are those the outcomes we want from a climate
perspective?
What’s The Goal?
Achieving any significant climate goal requires aligning
actions by airlines, companies and their travelers. The critical question is to
which goal are we aligning?
Reducing the quantity of airline CO2 emissions is a very
different goal from improving the airline industry’s CO2 efficiency. The reduction
goal reduces the airline industry’s impact on the climate, full stop. The CO2
efficiency goal can be achieved while increasing an airline’s absolute
emissions.
These are starkly different goals. One reduces airline
emissions. The other lets them grow so long as they grow at a slower pace than
the growth in passengers or miles flown. These goals are not compatible. Which
one should we choose?
Reducing Emissions Is Best
The only way to significantly reduce airline CO2 in the
short term is to travel less. This should be the north star for every
environmentally responsible travel program. The questions are how to achieve
this goal and how to judge one’s progress.
One option is to slash the travel budget. This will
reduce travel, but it harms the airline industry’s ability to fund investments
in sustainable aviation.
Another option is to make flights more expensive by
adding a substantial carbon tax to each flight. This will reduce demand for
low-value travel (good) and help airlines fund their sustainable aviation
efforts (good). But it does nothing to make
the trip better, nor does it provide a better KPI for making climate-aligned
travel decisions.
Decarbonize the Spend
The key is to decarbonize our spend on air travel. The
KPI to track this is CO2 per dollar of airfare. For example, a ticket with 500
kilograms of CO2 and a price of $500 has 1.00 kgs CO2 per dollar of
airfare. This “CO2 per $” KPI creates a
powerful alignment of actions and consequences for all parties striving to
reduce airline emissions.
Airlines can reduce this KPI by decarbonizing their
flight operations and – this is important – by raising prices. Higher airfares
will shrink the KPI’s value while reducing demand for travel. Higher airfares
will make it harder to justify low-value trips and will chew up travel budgets
faster, so fewer low-value trips will be taken. Airlines will have more profit margin,
not less for investing in sustainable aviation technology.
How do travelers benefit from making this KPI smaller? By
displaying this metric in the booking tool, the traveler can be guided to purchase
a more expensive but less-carbonized ticket. The higher-priced fare may qualify
the traveler for better service by the airline should there be any disruption. These
higher fares will more quickly earn the frequent traveler higher status and better
privileges.
Companies committed to a “less travel, better results”
travel strategy can offer first and business class seating to their travelers,
subject to finding fares that have an acceptable combination of low carbon and
justifiable price. Think “lowest carbonized airfare” as a new travel policy
plank.
What Really Matters
This new KPI reveals each airline’s progress at
decarbonizing their flight revenues, an important factor for today’s
procurement teams. A recent analysis of US airline data by Flight BI shows that
Delta had the lowest amount of CO2 per dollar of flight revenue. Yet Delta
ranked near the worst when using the CO2 per passenger and per mile flown
metrics. Procurement teams need to choose their metrics wisely.
The idea of willingly paying higher prices for airfares
will not sit well with managers stuck in a cost-first travel strategy. They
should their ask senior management if low prices still take priority over
reducing travel emissions. For many companies the answer is no, that the higher
priorities are fewer but more successful trips taken by healthy, productive and
willing travelers. See tClara’s white paper “How We Meet Matters” for evidence
supporting this claim.
Low fares and more low-value trips are not compatible
with sustainable corporate travel. It’s time to embrace the strategic benefits
of taking fewer trips at higher prices with less carbon. This new KPI reveals
how committed we are to these actions. Adopt it now.
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