Last month I argued that the primary reason Chinese wind farms underperform versus their U.S.-based counterparts is that China’s grid operators deliberately favor operation of coal-fired power plants. Such curtailment of wind power has both economic and technical roots, and it has raised serious questions about whether China can rely on an expanding role for wind energy. New research published today appears to put those concerns to rest, arguing that wind power in China should still grow dramatically.
The report today in the journal Nature Energy projects that wind energy could affordably meet over one-quarter of China’s projected 2030 electricity demand—up from just 3.3 percent of demand last year.
In fact the researchers, from MIT and Tsinghua University, project that modest improvements to the flexibility of China’s grid would enable wind power to grow a further 17 percent. That, they argue, means that China’s non-fossil resources could grow well beyond the 20 percent level that China pledged to achieve under the Paris Climate Agreement. Continue reading →
Last month the U.S. EPA admitted it was way off in its estimate of how much methane producers leak into the atmosphere in the process of wresting natural gas from the ground and piping it across the continent. It’s a big deal since methane is a far more potent greenhouse gas than carbon dioxide and likely responsible for a substantial fraction of the climate change we’re already experiencing. And it’s been a long time coming. For many years now methane measurements by airplanes and satellites have strongly suggested that methane emissions from the oil and gas patch could be double what EPA figures captured.
Today the online earth observation pub Earthzine has my take on an unusual research project that helped convince EPA — and the industry — to change their tune on methane emissions. Take me to the article…
What do you get when you mix a desert beetle, a pitcher plant, and a cactus? Pick the right parts and you get an extremely slippery surface with an uncanny capacity to condense and collect water, according to research reported today in the journal Nature.
The advance could be a big deal for the energy world because, when it comes to energy efficiency, condensation lies somewhere between a necessary evil and a major drag. Nuclear, coal, and thermal solar power plants, for example, require large heat exchangers to condense the steam exiting from their turbines so that they can raise a new round of hotter steam. For other devices, such as wind turbines and refrigerator coils, condensation is the first step towards energy-sapping ice formation. Continue reading →
One month after the terror attacks that traumatized Paris, the city has produced a climate agreement that is being hailed as a massive expression of hope. On Monday the U.K. Guardian dubbed the Paris Agreement, “the world’s greatest diplomatic success.” Distant observers may be tempted to discount such effusive language as hyperbole, yet there are reasons to be optimistic that last weekend’s climate deal finally sets the world on course towards decisive mutual action against global climate change.
The birthing process clearly sets Paris apart from earlier efforts at global climate action, such as the Kyoto Protocol crafted in 1997. Only last-minute intervention by then U.S. Vice President Al Gore clinched a deal at Kyoto Continue reading →
EN GARDE! Paris treaty pledges are still too rich, and contain some iffy ingredients
Three weeks before the start of the Paris climate talks, negotiators working to craft an international agreement to curb rising global greenhouse gas emissions are staring into a wide gulf between what countries are willing to do and what they need to do. Most countries have stepped up with pledges to meaningfully cut carbon emissions or to at least slow the growth of emission totals between 2020 and 2030. However, national commitments for the Paris talks still fall short of what’s needed to prevent the average global temperature in 2100 from being any more than 2 degrees Celsius warmer than at the start of this century—the international community’s consensus benchmark for climate impact.
Worse still, the national pledges employ a hodgepodge of accounting methods that include some significant loopholes that ignore important emissions such as leaking methane from U.S. oil and gas production and underreported coal emissions from China. How the promised emissions reductions will be verified post-Paris is “a big debate right now and it makes a massive difference in the numbers,” says Jennifer Morgan, global director for the climate program at the World Resources Institute (WRI), a Washington, D.C.-based non-governmental organization. Continue reading →
But, upsetting as any killing of birds is, avian mortality is a downside common to many modern human creations—including buildings, highways, and powerlines. The best data on bird mortality at Ivanpah, macabre as it might be, shows the death rate to be small and likely of little ecological significance.
Meanwhile, operational adjustments at both Ivanpah and Crescent Dunes are pushing avian impacts even further below levels that could threaten local bird populations. “The data does support a low level of avian mortalities and hopefully, through adaptive management and deterrence, it will go even lower,” says Magdalena Rodriguez, a senior environmental scientist with the California Department of Fish and Wildlife. Continue reading →
Readying refrigeration lines to create a 30-meter-deep frozen barrier against groundwater
Japan’s TEPCO is about to flip the switch on the infamous ‘ice wall’ intended to divert flowing groundwater around its crippled reactors at Fukushima and thus help stem the contamination of fresh groundwater at the site. The widely mischaracterized and maligned installation—which is a barrier of frozen soil rather than a wall of ice—has every chance of delivering the hoped for results, say radiation cleanup experts at U.S. national laboratories and feedback from initial system tests.
“The frozen barrier is going to work,” predicts Brian Looney, senior advisory engineer at the U.S. Department of Energy’s Savannah River National Laboratory in South Carolina and co-author of an independent assessment of TEPCO’s frozen barrier. The report, produced in collaboration with researchers at Looney’s lab and at Pacific Northwest National Laboratory, was completed in February but only released late last month; it found the system’s design to be sound and within the bounds of prior practice. Continue reading →