The water sector is energy-hungry, with energy consumption by the sector equivalent to all the energy used by Australia. In 2014, around 4% of global electricity consumption was used to extract, distribute, and treat water and wastewater as well as 50 million tons of oil equivalent of thermal energy.

By 2040, the amount of energy used in the water sector is likely to double due to trends including increased desalination, large-scale water transfers, and increasing demand for wastewater treatment, as well as higher levels of treatment.

The energy used to supply water and clean used water is responsible for around 3–8% of global greenhouse gas emissions. With global demand for water projected to increase by 55% by 2050, a business-as-usual scenario will see emissions increasing by 50% in the same timeframe.

Image by Michal Jarmoluk from Pixabay 

Decoupling Emissions from GDP Growth

As part of the San Diego’s Climate Action Plan, which calls for clean and renewable energy to be generated via a combination of on-site and large-scale renewables, San Diego’s Public Utilities Department has a forward-thinking renewable energy program that generates more renewable energy from water and wastewater than any other San Diego Gas & Electric customer. In addition to reducing water-energy-climate nexus challenges, the program has contributed towards the city’s 21% reduction in greenhouse gas emissions compared to the 2010 baseline (at the same time GDP growth has increased by 35%).

Utilizing Methane

One of the by-products of the wastewater treatment process at Point Loma Wastewater Treatment Plant is methane gas. The gas is used to fuel two continuously running generators that can each produce up to 2,235 kilowatts of electricity. A diesel-powered generator can also burn methane and produce an additional 1,220 kilowatts as a peaking generator. By utilizing the methane gas, it means the site is energy self-sufficient, with excess power generated sold back to the grid.

At the Metropolitan Biosolids Center, which produces dewatered biosolids that are around 30% solids and 70% water, methane produced by the digesters and from the adjacent Miramar Landfill is converted to electricity, which is used to run the facility. Thermal energy produced by the generators is used to heat the plant, as well as for air conditioning of the center.

Image from Pixabay 

The Sun’s Power

At three Public Utilities Facilities, solar photovoltaic systems have been installed:

• Alvarado Wastewater Treatment Plant has installed a 1.1-megawatt system, producing 1.4 million kilowatt-hours annually
• Metropolitan Operations Center III has installed a 30 kilowatt (AC) rooftop solar system that produces 45,000 kilowatt-hours annually
• Otay Water Treatment Plant has an 804 kilowatt (AC) system that produces 1.5 million kilowatt-hours annually​

The Takeaway

Water utilities have multiple renewable energy options available to reduce water-energy-climate nexus pressures.

About the Author

Robert is the author of Urban Water Security (Wiley), The Green Economy and the Water-Energy-Food Nexus (Palgrave Macmillan), Blue and Green Cities: The Role of Blue-Green Infrastructure in Managing Urban Water Resources (Palgrave Macmillan), Natural Resource Management and the Circular Economy (Palgrave Macmillan), and Climate Resilient Water Resources Management (Palgrave Macmillan).

He is the editor of the Climate Resilient Societies book series with Palgrave Macmillan. Robert is a contributing author for the World Bank's Water Blog, Asian Development Bank's Blog, United Nations Industrial Development Organization's Making It Magazine, and Green Growth Knowledge Platform. He has published widely on water security, water resources management, and related issues, and has conducted field research around the world, including Antarctica. He is Founder of Mitidaption, Mark and Focus, and Our Future Water.  ​

As scientists, effective communication is one of the most difficult challenges we face when discussing climate change, global warming, and other complex issues. This is particularly pressing when communicating to those who lack a scientific background or who are unfamiliar with the relevant terminology and scientific methods. During Connect4Climate’s #YouthTakeover at the United Nations (UN) Climate Summit, attendees deconstructed these barriers to tackling the critical issue of climate change. Participants from diverse scientific and non-scientific backgrounds, age groups, and geographic locations discussed their perceptions of climate change and the need for action in a way that everyone could understand.

These environmentally conscious changemakers included artists, government officials, filmmakers, fashion industry models, researchers, media specialists, high school and college students, business owners, musicians, journalists, and more. Each group of activists shared their unique perspectives in a digestible format on social media while also preserving the rigor of climate science. These groups of people, who are not typically proficient in quantitative science themselves, molded the principle of climate change into a universal language, and subsequently mobilized their followers into action toward climate change solutions. As a result, people everywhere could remotely access and understand topics such as fast fashion, climate finance, and pollution.

These climate activists publicized key facts about human-induced impacts on the environment that pertain to their followers’ fields of interests, expressed the urgency to act on climate change, and articulated how to transition to more environmentally conscious practices to abate these human-caused damages. Models from the fashion industry informed their social media followers about science in a way that captured the attention of like-minded individuals. For example, the models explained that many clothing designers do not consider the environment during the manufacturing process, and that the amount of energy and water required to produce those clothes results in adverse unintended consequences for the natural environment. Changemakers of all backgrounds contributed to and echoed this sentiment: musicians performed songs about caring for the environment; artists created masterpieces on the dangers we are currently facing and predicted to face; and CEOs of well-known businesses explained how carbon pricing can positively impact their industries and increase competitiveness. Moreover, youth encouraged other youth to engage in the growing climate movement. 

The most effective component of the weekend event was the collaboration among all of these  people, as global citizens, to work towards solving the problems of climate change and to push for concerted action towards achieving the 17 UN Sustainable Development Goals. When people from a variety of backgrounds join together to work on a specific issue, stronger, more diverse and more achievable solutions emerge than when everyone stays confined to their own discipline. This could be observed at the Youth Policy Jam on Unlocking Climate Finance, where attendees of the Youth Climate Summit were divided into groups of ten to discuss how to procure more funding for youth programs combating climate change. Participants ranging from high school students to established World Bank and government officials provided their input, collaborating to produce a wealth of ideas that the young organizers of the Policy Jam, Youth Climate Lab, presented later that week during the UN General Assembly.

Another segment of the UN event featured Pollution Pods, an installation created by the artist Michael Pinsky and other urban planners, researchers, and activists. The pods simulated air quality from five different cities around the world: London, New Delhi, Beijing, São Paulo, and Oslo. These simulations included temporal changes in the concentrations of various pollutants from fossil-fuel-burning emissions, namely carbon dioxide, sulfur dioxide, ozone, nitrous oxide, and particulate matter. In some regions, such as New Delhi and Beijing, the pods were very hot, smelly, and hazy. Experiencing the air quality conditions in other cities worldwide was truly eye-opening. It is one thing to learn about pollution in school and universities but another to experience first-hand how these pollutants impact the natural environment and our own bodies. The collaborative effort behind the creation of these pods was remarkable, which made me hopeful that people who come from non-science backgrounds can grasp the weight of human-induced impacts on the environment and that the science community can communicate complex processes in simple and understandable terms to a general audience.  

Connecting and working with people from non-technical backgrounds on the issue of global climate change is of utmost importance in our time. Although effective science communication is challenging, and some of its barriers persist, it gave me immense hope to see that creativity and partnerships can get the word out to many individuals who otherwise might disengage from science discussions because of the daunting jargon and nuances. Connect4Climate’s #YouthTakeover proved that effective dialogue is possible and that the steps we have already taken toward breaking down these communication barriers will catalyze climate action for our generation and those yet to come.

Banner image courtesy of Kaia Rose, Connect4Climate. Other images courtesy of the Connect4Climate #YouthTakeover team.

The human rights nonprofit Amnesty International is well known for its support of humanitarian causes around the globe; its ambitious goals include ensuring the rights of refugees and abolishing the practice of torture. In today’s world, climate change, too, has become a human rights issue, with more and more displaced each year by rising sea levels and increasingly intense natural disasters—a situation with the potential to grow exponentially worse absent swift and decisive action in line with the Paris Agreement of 2015.  As Amnesty International’s Secretary-General Kumi Naidoo said on Monday at George Washington University, “The right to a liveable planet is essentially Article Zero of our basic human rights as a people.”

In recognition of the ongoing climate crisis and the amazing work youth activists around the world have been doing to raise awareness of it and spur concrete action, Amnesty chose to confer this year’s prestigious Ambassador of Conscience Award on School Strike for Climate founder Greta Thunberg and the regional leaders of the international #FridaysForFuture movement that her efforts in Sweden galvanized.

“All around the world, Amnesty is gathering to lift up these inspiring young climate activists who are ringing the alarm bell,” Amnesty USA Executive Director Margaret Huang stated at the awards ceremony Monday evening.

Two other young advocates of climate action, Takota Iron Eyes (16) and Ramona Sarsgaard (12), made it abundantly clear in their speeches why Thunberg and the #FridaysForFuture team were deserving of Amnesty’s highest honor. “At 16, I am worried about what it would look like if I want to have kids,” Iron Eyes candidly told the audience, her frustration at the lack of action on the part of older generations apparent. Sarsgaard echoed this sentiment, saying that “A child should not have to have this responsibility. But in order to make change, we cannot pretend that everything is okay.”

Thunberg has always maintained that it should not be the job of children to fix problems created and subsequently neglected by their parents. Her activism and that of the overarching #FridaysForFuture campaign is grounded in the use of public demonstrations to illustrate the gravity of the situation on the world stage and bring about transformative policy changes in government and industry.

“Right now, I think an awakening is taking place,” Thunberg asserted in her acceptance speech. “Activism works. So what I’m telling you now to do is act. See you on the streets.”

Innovate4Climate 2019 saw hundreds of climate leaders congregate in Singapore to hash out knotty green finance issues and brainstorm about the road to global sustainable living. In addition to veteran eco-advocates, though, the organizers of Innovate4Climate were sure to highlight the achievements of younger people and up-and-comers in the movement. One of the most exciting examples of this was the Pitch Hub Competition, in which hundreds of teams representing groundbreaking green start-ups submitted concepts to a panel of discerning judges. Of an initial 239 high-quality entries from teams spanning 81 countries, the judges selected 5 finalists to pitch their ideas live in Singapore for a chance to win thousands of Amazon Web Services dollars to infuse into their businesses.

The Wastezon team, who "envision a waste-free world," delivered a pitch on a mobile app that would allow its users to interface directly with the recycling industry, enabling them to regiment their consumption and disposal much more effectively and to be active participants in a circular, waste-free economy. The app was also built to be of use to manufacturers, who can capitalize on its blockchain features to get discarded products recycled and back in consumer hands much more efficiently. Everybody wins.

Positive Energy Ltd. centered its presentation on renewable energy, pushing for a "drastic shift from large fossil fuel infrastructure to smaller solar and wind distributed assets." Seeking to help people passionate about sustainable energy avoid the usual discouraging inefficiencies of non-specialized investors and local banks, Positive Energy offers a blockchain-driven service that pairs project developers with investors free of middle men in a secure digital environment.

Mellowcabs, which earned the third-place spot on the Pitch Hub podium, shared its concept of a fully electric minicab taxi service that urban travelers could enlist at will via a dedicated mobile app. Specifically, Mellowcabs wants to cut back on the substantial carbon emissions arising from short-range trips in trafficky city conditions. The app will be tapped in to public transit options as well to give users the most efficient, pleasant, and eco-friendly trips possible, and the sides of the taxis will be emblazoned with advertising from green-minded sponsor organizations.

Nodis took second place for its presentation on revolutionary window technology. By suspending sheets of color-coated nanoparticles between panes of laminated window glass, Nodis is able to produce windows whose tint can be set by consumers with the push of a button and changed whenever desired. Any degree of tinting, from fully translucent to fully opaque, is possible for purchasers of Nodis windows, and the levels of tinting can be preprogrammed by building managers or homeowners to maximize eco-efficiency and minimize headaches.

Sinba was unanimously awarded the Pitch Hub Competition's top prize for plan to cultivate a world "sin basura" (without waste). In particular, Sinba's focus is the food industry: its business model centers on buiding relationships with restaurants and other food businesses and helping them cut back on costs by sustainably integrating their organic waste back into their own supply chains. Instead of getting dumped in landfills, food waste can be reprocessed for use as future fertilizer or pig feed, saving food vendors money and helping to save the planet too.

In addition to Amazon's cash infusions for the winning teams, all five teams who reached the finals were awarded the chance to attend a three-day start-up strategy boot camp put on by ImpacTech.

We at Connect4Climate offer our congratulations to all these teams of game-changing innovators, including the hundreds of entrants who didn't make it onto the podium this time around but who clearly have great ideas for a greener future.

On the occasion of World Environment Day 2019, celebrated on June 5, the Jadir Taekwondo Association launched the third edition of AJTKD Environment Week. Several activities were planned and executed throughout the week aiming to raise awareness of the importance of the environment and its preservation.

The event began with lectures on the themes "Sustainable Use of Energy" and "The Sustainable Development Goals", carried out by prof. Paulo Rocha, Ph.D. in Electrical Engineering at COPPE-UFRJ and volunteer at AJTKD.

Rocha explained how "the efficient use of electric energy reduces the emission of greenhouse gases and contributes to the environment," and how "it minimizes electricity bill expenses at the end of the month."

Youth participants then had the opportunity to watch a cartoon animation about the UN's Sustainable Development Goals, which reinforced the importance of preserving the environment in order to keep the planet sustainable.

Perhaps most exciting of all for the students was a virtual reality experience whereby they got the opportunity to visit the largest rainforest in the world - the Amazonia. Virtual reality makes it possible to take students into places that would otherwise be physically unviable.

Parque Madureira, the third largest public park in the city of Rio de Janeiro, was the host of the sports activities held during the event. Several Taekwondo classes were held, as well as presentations aimed at students, their families and the community.

The park has an area of ​​109,000m², and is home to more than 800 planted trees.

Banner image from Jens Hausherr. Others courtesy of the Jadir Taekwondo Association.

Global investors have enthusiastically embraced a national Netherlands 5.98 billion euro green bond designed to fund projects to cope with current and future climate change impacts and an advanced low-carbon economy. Much of the bond focuses on using coastal and river ecosystems as a safeguard for negative climate impacts such as high flood risk. Investors responded to the bond immediately, oversubscribing the issuance by more than 15.2 billion euros. 

This green bond is the first globally to employ resilient nature-based solutions certified using the Water Infrastructure Criteria of the Climate Bonds Standard. A consortium of organizations led by the Climate Bonds Initiative, the Alliance for Global Water Adaptation (AGWA), the World Resources Institute (WRI), CDP, and Ceres launched water resilience bonds criteria in May 2018 to inform investors about the climate risks and solutions embedded in the green bonds market. Globally, the green bonds market reached about 168 billion USD in 2018. 

Niels Vlaanderen, Policy Advisor for International Affairs at the Department of Infrastructure and Water Management for the Netherlands, commented: “We realized that we needed new solutions — automatically building flood dykes higher was no longer a sustainable solution. We had to change a system we had worked with for centuries and broaden our goals. We must future-proof our country by incorporating cultural and ecological values into our adaptive decision making.”

According to John Matthews, Executive Director of the Alliance for Global Water Adaptation and lead author of the Water Infrastructure Green Bonds Criteria, “For the past thousand years, the Dutch have reclaimed land from the sea. Today, the sea and their rivers are growing higher in a country where half of the country is already below sea level. With this bond issuance, the national government is signaling to investors the scope of the financing needed to adjust to climate change — and how we must link economies and ecosystems together to secure a joint future in a shifting climate.”

The bond also plays a role in sustainable development according to Henk Ovink, Special Envoy for International Water Affairs, Kingdom of The Netherlands Sherpa to the UN/WB High Level Panel on Water, adding, “This green bond is spot on, aimed at creating added values across the board of the sustainable development goals, leveraging investments for social, cultural, economic and environmental needs and challenges. Using water as leverage to catalyze transformative climate action.”

Justine Leigh-Bell, Deputy CEO at Climate Bonds Initiative (CBI) in London, stated, “Resilience is a powerful new target for investment. The Netherlands has just shown that investors are eager to see policymakers investing in long-term resilience and in working with rather than against nature. Using the Water Infrastructure Criteria rewards issuers and investors together, providing market and citizen confidence for innovative approaches such as nature-based solutions to flood risks.”

Niels Vlaanderen continued, “In Dutch, we say, ‘Als er één schaap over de dam is, volgen er meer,’ or ‘We need only a few to lead.’ Indeed, this bond is the beginning of a very promising area where we expect large funding requirements in the near future. We have proven that the Netherlands can shift strategies to prepare for a changing climate. With our room for the river projects, we have shown that we can combine flood protection and social values through nature-based solutions.”

The benefits of this bond are not limited to at-risk communities and ecosystems. The Netherlands’ Minister of Finance, Wopke Hoekstra, stated, “Our aim is to give an extra boost to the Dutch green capital market through the issuance of the Green Bond.”

The green bond finances low-carbon projects (renewable energy, energy efficiency, clean transportation). Perhaps the most innovative aspects of the bond, however, are projects designed to help the Netherlands adjust to climate change adaptation through sustainable water management, particularly the use of nature-based solutions and green infrastructure approaches for reducing increasing flood risks in coastal and low-lying areas.

Banner and thumbnail images courtesy of, respectively, Michael Gaida and Andželina Hanke from Pixabay.