Footprint Network Blog - 07/2014

The Effect of Rising Temperatures on the Energy-Water Nexus

Chris Nelder, Policy Officer - 07/27/2014 10:36 PM

May and June this year were the hottest ever since record-keeping began in 1880, according to a new National Oceanic and Atmospheric Administration report. 2014 could go down as the warmest year yet, exceeding the previous records set in 2003 and 2013.

There’s no question that the Earth is warming, ancient ice is melting and sea levels are rising. Friends of Global Footprint Network are well aware of many of the risks that anthropogenic climate change poses, particularly to the world’s poorest regions.

A risk that remains under-appreciated, however, is the impact that water availability will have on energy, and that constrained energy supply will have on water.

After food production, electricity generation is the second-largest consumer of water globally. Thermal power plants – those powered by coal, natural gas, oil and nuclear – consume vast amounts of water in their cooling cycles. A single nuclear reactor can consume over 15 million gallons of water per day. Power generation accounts for 41 percent of freshwater withdrawals and about three percent of freshwater consumption (3.3 billion gallons of water per day) in the United States.

Warmer temperatures have been taking a toll on these thirsty facilities. Every summer, a lack of water (or of water that is sufficiently cold) forces power plants to shut down. Inadequate and irregular rainfall has also forced hydropower facilities to shut down, such as the Shivanasamudra plant in southern India this month.

Just as producing power requires water, producing water requires power. In California, one-fifth of the state’s electrical power is used to pump, treat, transport, heat, cool and recycle water. Agriculture consumes 80 percent of the water in the state, which produces one-third of the vegetables and two-thirds of the fruits and nuts consumed in the United States.

This year is on track to be the driest in the history of recorded rainfall in the state, and has already forced cattle ranchers to pare down their herds and almond farmers to plow under their trees. Food prices across the nation have crept up due to the drought.

California is emblematic of the predicament that the world now faces. A growing population puts water, food, and energy supplies under even more pressure even as they are increasingly strained by climate change. But the most accessible solutions often lead to destructive feedback loops. For example, California’s current plan to replace the 2.2 gigawatts of power generation from the San Onofre Nuclear Generation Station, which was shut down in 2012, is likely to rely substantially on new power generation from natural gas, which will pump even more CO2 into the atmosphere and increase the probability of future droughts.

As we anticipate the announcement of Earth Overshoot Day this year, which will arrive earlier than ever, it’s worth contemplating how we can find a way out of our predicament, and find real and enduring solutions to the knot of problems in the energy-water nexus. As many have observed, it is really an energy-water-food-economy-security-and-everything nexus, because energy and water are so fundamental to life. Eliminating waste, and using the precious resources we have as efficiently as possible, is the obvious place to start – and that’s a challenge we can all help to answer.

Categories: Carbon Footprint, Ecological Limits


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World Cup Footwork and Footprints: Who Are the Winners and Losers?

07/11/2014 10:10 PM

As the final World Cup match quickly approaches, we couldn’t help but kick around some Ecological Footprint numbers describing the diverse nations competing in this year’s games.

The eight nations who made it to the quarter-finals represent vastly different lifestyles. If all people on Earth lived like residents of those countries, how many Earths would it take? If we all lived like the Argentineans, it would take us 1.6 Earths. In contrast, living like the Belgians would require us to juggle 4.3 planets – not a small feat. The Colombian lifestyle would lead us to juggle the fewest Earths – just slightly more than one.

 

Do Big Footprints Give Teams a Leg Up in Football?

Do big Footprints produce big World Cup wins? After all, big Footprints may mean big budgets. Big budgets can buy more expensive players. But are they really better? When comparing the number of goals scored before the round of 16 (which evens the playing field because all teams competed in three games), the number of goals does not seem to correlate with a country’s Footprint size, as revealed on our soccer field below:

 

The U.S. and Belgium, for instance, have the largest Footprints per person, but their teams racked up only four goals – the same as the country with the lowest Footprint, Côte d’Ivoire. And the two countries that nailed the most goals have vastly different Footprints: Colombia, with 9 goals, has a Footprint of less than 2 global hectares per person, while the Netherlands with 10 goals has a Footprint of more than 6 global hectares per person.

World Cup football is exciting – nearly as exciting as the global sustainability game. The rules are similar. In both, the players strive to play their best within a given field. For soccer, the field is roughly 1 hectare for 22 players. For sustainability we have about 1.7 global hectares for each citizen of the planet. Can we all live well within that field? Imagine the cheers if we can! The Colombians are closer to winning that game than the Belgians. And if the Germans played the U.S. team in terms of energy transition, it may look as ugly for the U.S. as it did for the Brazilians on the soccer field earlier this week.

If we had to choose our favorite of the two finalists who face off on Sunday based on how little demand they place on nature, we would have to root for Argentina over Germany. GOOOOOLLLLLL!

Curious about the Footprints of individual countries? Visit this page and select a country from the dropdown menu: http://www.footprintnetwork.org/countrytrends.

Categories: Ecological Limits, Footprint for Government


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