Energy Exchange

Why Isn’t Texas Saving Energy and Water through Solar Floatovoltaics?

By Kate Zerrenner / Published: March 1, 2016

floatovoltaics flickr Symbiosis – in which different species have a cooperative or mutually beneficial relationship – is everywhere in nature: honeybees receive vital nutrients from flowers while delivering pollen (male) directly to the female parts of the flower; pilot fish gain protection from predators, while sharks gain freedom from parasites; and dogs protect their owners, while receiving food and shelter. Cited by some scientists as a major driver of evolution, symbiosis has played an important role in the mutual survival of certain species.

Two elements in nature that are also very symbiotic are energy and water: It takes water to produce and distribute energy, while energy is used to treat, pump, and distribute water. This inextricable link is knowns as the energy-water nexus. Yet, energy and water planners do not treat these important resources as symbiotic “species,” resulting in a lot of waste – something we cannot afford with climate change on the rise.

Floating solar panels atop bodies of water, or the cleverly nicknamed “floatovoltaics,” are a possible solution for both energy and water challenges. The panels help to reduce evaporation of water – critical in hot, dry places like Texas and California – and the water helps to keep the panels cool, increasing their efficiency. Plus, compared to more traditional fuel sources, solar PV requires little to no water to produce electricity. Incorporating more solar energy and relying less on coal or natural gas means greater water savings overall.

Floatovoltaics seem like a win-win solution, but it’s not being deployed on a large scale yet. Some countries and U.S. states have surged ahead in testing this technology. So why isn’t a state like Texas, with big reservoirs, crippling droughts, and lots of solar potential, taking this bull by the horns? Read More »

Posted in Energy-Water Nexus, Solar Energy, Texas / Read 2 Responses

4 Reasons North Carolina Should Move Forward Despite the Clean Power Plan Hold

By Tanja Vujic / Published: February 29, 2016

sunrise-224756_960_720 In a surprise move this month, the U.S. Supreme Court “stayed” (or put a hold on) the Clean Power Plan, which sets common-sense carbon pollution standards for power plants, our nation’s largest source of carbon pollution. States can craft their own plans to meet the standards, including the deployment of renewable energy generation, energy efficiency, and fuel switching. The Clean Power Plan also provides incentives for increasing energy efficiency in low-income areas.

About 20 states are moving ahead and continuing work on plans to curb carbon pollution and comply with the plan. Other states – including my home state of North Carolina – are challenging the plan’s implementation. This action is unfortunate because North Carolina will benefit from the plan on many levels, and studies show that compliance is not going to be a problem for North Carolina, as opponents claim. Read More »

Posted in Clean Power Plan, Climate, North Carolina / Read 2 Responses

Paying Attention to “Orphan” Wells Pays Off

By EDF Blogs / Published: February 26, 2016

By David Lyon and Adam Peltz

There are at more than 1.5 million inactive oil and gas wells in the U.S. that remain uncapped and, in some cases, unsafe. Some are temporarily dormant, while others are fully depleted but not yet properly sealed, continuing to emit residual pollution from the days when they were active. Many are what the industry calls “orphans,” with no financially solvent owner in sight to take the responsibility for them. Long seen as a water protection issue, a new study in the journal Geophysical Research Letters now shows that properly plugging unused wells can also reduce emissions of the potent greenhouse gas methane.

The study looks at orphaned and plugged wells in four oil and gas producing regions of the country – Colorado’s Denver-Julesburg Basin; Ohio’s Appalachian Basin; Wyoming’s Powder River Basin; and Utah’s Uinta Basin. It is part of a series of 16 major studies organized by Environmental Defense Fund to better understand the scale and scope of oil and gas methane emissions. Read More »

Posted in General, Methane, Natural Gas / Comments are closed

Moving Up: New Accounting Shows Full Scale of Aliso Canyon and U.S. Methane Leaks

By Steven Hamburg / Published: February 25, 2016

A paper today in the journal Science, estimating emissions from the massive methane leak at Aliso Canyon, indicates that nearly 100,000 metric tons of methane escaped into the atmosphere over Southern California – more than previous estimates. The new findings come days after the Environmental Protection Agency released draft results of their updated accounting of methane emissions from the nation’s oil and gas supply chain that shows that emissions are up 27% above the agency’s early estimate.

The more we know about methane emissions, the higher they get. The new findings show not just the massive scale of the oil and gas industry’s methane problem, but also how critical it is to get the science right to both understand this source of a potent climate pollutant and reduce it. We know that cutting methane is one of the fastest, most cost effective ways to curb today’s warming, and when combined with critical efforts to reduce carbon dioxide pollution, substantial climate progress can be made. Read More »

Posted in Aliso Canyon, General, Methane, Natural Gas / Read 4 Responses

Regulators Take First Step to Ensure New York’s Distributed Energy Future is Clean

By Elizabeth B. Stein / Published: February 25, 2016

New York’s environmental and utility regulators are moving closer to a unified approach to building a cleaner, more robust, and affordable energy system.

The Public Service Commission (PSC), New York’s utility regulator, has been working to rethink how New York makes, moves, and uses electricity through its innovative Reforming the Energy Vision (REV) initiative. Specifically, it has been steering utilities toward a more decentralized electric grid, one that relies more heavily on distributed energy resources. These resources may be clean (such as energy efficiency or solar rooftops) but they may also be dirty (such as older diesel generators). While REV aims to encourage carbon emissions reductions, there is a risk that the initiative could cause environmental harm by driving adoption of dirty distributed energy resources. Getting environmental rules in place before REV becomes a driver of these types of emissions is a matter of real urgency. Read More »

Posted in Energy Efficiency, New York / Read 1 Response

Coming Soon: Solutions for Finding Methane Leaks Faster

By Aileen Nowlan / Published: February 25, 2016

porter-ranch-aliso-canyon-methane-gas-leak-3-1020x610 After more than four months of spewing potent methane pollution, the massive Aliso Canyon gas leak has finally been plugged. But now the state of California and the utility that owns the site, SoCalGas, are left with the responsibility of ensuring a disaster like this doesn’t happen again.

While Aliso Canyon has captured the attention of the nation, it’s important to remember that there are smaller—and far more prevalent—leaks happening throughout the country’s oil and gas supply chain every day. In fact, those emissions add up to more than 7 million metric tons of methane pollution every year. That equals over $1 billion worth of wasted natural gas at 2015 prices. Read More »

Posted in Aliso Canyon, General, Methane, Natural Gas / Comments are closed