Author Archives: Kate Zerrenner

Why Water Utilities Need an Energy Plan – and How Texas is Making Progress

water-tower-1420989568vmuWhen you prepare the Thanksgiving meal, do you ask each person to make a dish of their choosing, with no coordination for an overall cohesive meal? Probably not. Most likely, you plan, because you want everything to fit together.

Now imagine a water utility with different departments like water quality, finance, and administration. Most water utilities have high energy costs, so each department needs to manage and reduce its energy use – but typically there’s no plan to synchronize these efforts. With such a piecemeal approach, the utility may get overall energy savings, but it’s not maximizing the potential to meet ambitious efficiency goals or reduce power costs.

Enter the Energy Management Plan (EMP), a tool that sets up an organization-wide strategy for energy use. By creating a coordinated vision, an EMP establishes clear efficiency goals and gives departments the flexibility and direction for meeting them. That’s what this summer’s EDF Climate Corps fellow focused on at Tarrant Regional Water District (TRWD), which supplies water to 2 million users in the Fort Worth area. The TRWD fellow found opportunities where an EMP could improve the utility’s energy efficiency and management, leading to potential savings and less wasted water. Read More »

Posted in EDF Climate Corps, Energy-Water Nexus, General| Leave a comment

Home is Where the Smart Is: First-of-its-Kind Study Reveals Importance of Smart Technology and Low-Water Clean Energy

Dustin McCartney, senior data analyst at Pecan Street, co-authored this post.

Have you ever thought about how much water your dryer needs to dry your clothes? (And no, I don’t mean your washing machine.)

Every appliance in your home has a water intensity, or the amount of water needed to make and send the electricity that powers it. On the flip side, all water – like in your faucet, toilet, and irrigation system – has an energy intensity, the amount of electricity needed to treat, distribute, or heat the water. Chances are, you probably haven’t given much consideration to the water intensity of your home energy, or the energy intensity of your water. There hasn’t been any data at the household level – until now.

Environmental Defense Fund (EDF) recently teamed up with Pecan Street, Inc. to examine these combined metrics in a new study. Pecan Street, a research group running the most extensive energy-tracking in U.S. history, analyzed the energy and water costs of a group of Austin homes and their appliances.

By gathering granular data on how much energy and water households use, as well as their associated energy and water intensities, this study reinforces the need for smart technology to help us better understand and manage energy and water. Moreover, in order to safeguard water supplies, the analysis demonstrates the importance of powering our lives with low-water clean energy resources. Read More »

Posted in Energy-Water Nexus| Comments are closed

New Study: Solar, Energy Efficiency Can Help the Texas National Guard Save Money and Water

HeroBannerMain24 croppedThis year has seen historic flooding across the South. In addition to the devastating rains that recently hit Louisiana, severe floods pummeled Texas earlier this year. In both cases, the states’ National Guards were first responders, rescuing families, delivering meals and supplies to survivors, and providing local agencies with high-water trucks, boats, and helicopters.

As the frequency of extreme weather events like these increases, it is imperative that the National Guard can continue devoting resources to critical, first-responder services. But in Texas, those services could be threatened by the state’s dwindling water supplies.

A new study from CNA Analysis & Solutions, funded by Environmental Defense Fund and in collaboration with the Texas Army National Guard (TXARNG), shows many Texas defense facilities are in water-stressed counties. Over time, this could result not only in higher water costs, but also power production constraints, since it requires a lot of water to produce and move electricity from traditional energy sources like coal and natural gas. Both of these challenges pose a direct threat to the budget and operating capabilities of the TXARNG. Fortunately, the analysis also indicates these same areas have great potential for solar energy, which requires little to no water to meet power needs on-site.

By tapping into that potential and pursuing bolder energy efficiency initiatives, TXARNG could ease pressure on the electric grid and reduce utility bills, all while safeguarding residents and precious water supplies. Read More »

Posted in Energy-Water Nexus, Solar Energy| Comments are closed

Going for the Green: Rio Olympics Show Link between Environment, Economy, Health

OlympicHandOlympic Games are historically about gold, silver, and bronze – not green. Even the “greenest” Olympics, held in London in 2012, used nearly 400 temporary generators, which release harmful pollution, including carbon monoxide and nitrogen oxides among many others. Nevertheless, when Brazil won its bid in 2009 to host the 2016 Olympics in Rio de Janeiro, the country pledged to host the "Green Games for a Blue Planet,” a festival with sustainability at its core.

Brazil, nearly as large as the U.S. and holding 60 percent of the Amazon rainforest, currently uses renewable energy to make about 85 percent of its electricity (compare that to the U.S., where only 13 percent of our electricity comes from renewable sources). With renewable energy success like that, who better to host the “Green Games?”

Yet, despite Brazil’s ambitious goals, years of planning, and an advantage in existing renewable energy resources, Brazil is falling short of its goal for a cleaner, greener Olympics. This is because serious social, political, environmental, and health challenges tangent to the Olympics have constrained the nation’s ability to realize the sustainability goals Brazil thought achievable in 2009.

Read More »

Posted in Energy-Water Nexus, Texas| Comments are closed

Texas’ Evolving Energy Reality: Clean Energy Uses Less Water

wind water flickrIt’s been an interesting time for water in Texas. Beyond the incredibly wet and cool spring we’ve been having, Memorial Day saw the second year in a row of record-breaking floods.

And a few weeks ago, the Texas Water Development Board (TWDB) asked for comments on the draft 2017 State Water Plan. The TWDB is the state agency responsible for water planning, and every five years it produces a strategy that “addresses the needs of all water user groups in the state – municipal, irrigation, manufacturing, livestock, mining, and steam-electric power.”

In the five years since the last state water plan, Texas has gone from one extreme to the other in terms of water: from the throes of a devastating drought to historic flooding that resulted in some reservoirs being full for the first time in 15 years.

In this climate of feast or famine, we need to better understand our water supplies and conservation efforts, both of which have a strong tie to our energy choices. That’s why Environmental Defense Fund (EDF) weighed in on Texas’ draft water plan. Not only does the state significantly overestimate the amount of water needed to make electricity, but a more comprehensive view of energy in relation to water demand and supply would benefit the 2017 State Water Plan and future plans. Read More »

Posted in Energy-Water Nexus, Natural Gas, Renewable Energy, Texas| Read 1 Response

Holistic Energy-Water Planning: Hedging Your Bets in a Water-Stressed World

ewn road to resilienceYou probably have some sort of insurance – for your healthcare, car, house, or apartment. Acting on climate change is also like insurance. It is all about managing the risks.

We can’t know for certain what the future brings, but recent research predicts a 40 percent shortfall of available water across the globe by 2030. In the face of this prediction, a new report from the World Energy Council, “The Road to Resilience – Managing the Risks of the Energy-Water-Food Nexus” helps lay some groundwork to ensure we plan for the climate risks that will affect our most essential resources.

I have talked about the reliance of energy on water and water on energy (the energy-water nexus), and touched on their connection to food. But let me make that linkage clearer: 70 percent of available global freshwater is used by the agricultural sector, and energy is the second-largest freshwater user globally after agriculture (although this varies from country to country and region to region). Relatedly, about 15 percent of total U.S. energy demand is for the food sector (this includes both agriculture and processing), and roughly 13 percent of U.S. energy use is for water-related purposes.  Read More »

Posted in Energy-Water Nexus| Read 4 Responses
  • About this Blog

    EDF Energy Exchange - Accelerating the clean energy revolution

    EDF's energy experts discuss how to accelerate the transition to a clean, low-carbon energy economy.

    Follow EDFEnergyEX

  • Get blog posts by email

    Subscribe via RSS

  • Categories

  • Authors