Tag Archives: Coal

Renewables & Energy Efficiency Can Cut Power Plants’ Water Use 97% by 2050

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Investing in renewables and energy efficiency could reduce power plants’ water withdrawals by 97 percent from current levels by 2050 and cut carbon emissions 90 percent from current levels, according to a study by the Union of Concerned Scientists…

Duane Tilden‘s insight:

>The report warns that a “business-as-usual” approach would keep emissions within 5 percent of current levels and water withdrawals would not drop significantly until after 2030. And while utilities’ ongoing shift to natural gas would decrease water use in the coming decades, the study says its ongoing requirements could still harm water-strained areas. This shift to natural gas also would do little to lower the power sector’s carbon emissions.

More than 40 percent of US freshwater withdrawals are used for power plant cooling, the report says. These plants also lose several billion gallons of freshwater every day through evaporation.

Further, increasing demand and drought are putting a greater strain on water resources. Low water levels and high water temperatures can cause power plants to cut their electricity output in order to avoid overheating or harming local water bodies. Such energy and water collisions can leave customers with little or no electricity or with added costs because their electric supplier has to purchase power from elsewhere, as occurred during the past two summers.<

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It’s Time Our Policies Reflect The Fact That Energy And Water Are Fundamentally Intertwined

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For a long time, we’ve overlooked the inextricable relationship between water and energy use.  Coal, nuclear and natural gas plants use enormous amounts of steam to create electricity.  Producing all of that steam requires 190,000 million gallons of water per day, or 39% of all freshwater withdrawals in the nation.

Duane Tilden‘s insight:

>The longstanding division between energy and water considerations is particularly evident in the case of energy and water management.  These resources are fundamentally intertwined: Energy is used to secure, deliver, treat and distribute water, while water is used (and often degraded) to develop, process and deliver energy.

Despite the inherent connection between the two sectors, energy and water planners routinely make decisions that impact one another without adequately understanding the scientific or policy complexities of the other sector.  This miscommunication often hides joint opportunities for conservation to the detriment of budgets, efficiency, the environment and public health, and inhibits both sectors from fully accounting for the financial, environmental or social effects they have on each other.

This lack of collaboration between energy and water planners is especially dire considering Texas is in midst of an energy shortage that is exacerbated by the multi-year drought.  Without adequate planning, we could someday have to choose between keeping our lights on and turning on the faucet.<

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The Obama Administration Proposes $8 Billion in Loans for ‘Clean’ Fossil Fuel Technologies

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As part of President Obama’s new energy initiative, the U.S. Department of Energy has proposed $8 billion in loan guarantees for fossil fuel technology projects that are able to reduce the country’s greenhouse gas emissions.

Duane Tilden‘s insight:

> […]the U.S. Department of Energy has proposed $8 billion in loan guarantees for fossil fuel technologies to reduce the country’s greenhouse gas emissions. The proposal would fund schemes such as waste heat recovery and carbon dioxide capture, however it has unsurprisingly received criticism as it would draw focus away from green technology projects such as renewable energy and electric vehicles.

Speaking about the new proposal, Energy Secretary Ernest Moniz stated:  “Coal and fossil fuels still provide 80% of our energy and 70% of electricity, and they will remain an important part of our future, as the president noted.”<

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The Amazing Energy Race

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The United States is falling behind. To catch up, we need to reorder our priorities, find cleaner and smarter fuels and develop new technologies.

Duane Tilden‘s insight:

>“In reducing coal’s historic dominance, the president is formalizing a market trend that was already taking shape,” remarked Andy Karsner, who was an assistant secretary of energy in the last Bush administration. His bigger message, though, was “no matter where you find yourself on the political spectrum, it’s useful for the nation to discuss, debate and consider a strategy for climate change. The consequences of inaction are potentially greater than all the other noise out there.”<

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Is Gasification Better Than Incineration? Read: Global Markets for Gasifiers – WSJ.com

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NEW YORK, April 15, 2013 /PRNewswire/ — Reportlinker.com announces that a new market research report is available in its catalogue:

Global Markets for Gasifiers

Duane Tilden‘s insight:

INTRODUCTION

Gasification is a centuries–old thermochemical energy conversion technology that has slowly achieved modernity over the decades. The technology is undergoing its third evolutionary surge. Fuel shortages in WWII spurred widespread adoption for vehicle fuels. The oil crisis 1973 spurred a re–evaluation and renewed development. Rising oil prices, globally increasing fuel demand, and overwhelming scientific evidence of climate change have spurred this last leg to full industrialization.

The central concept of gasification is that by raising carbon–rich materials to high temperatures in an oxygen–deficient containment, the material will break down thermochemically instead of burning. If the same material is combusted (burned), it emits carbon monoxide and a host of pollutants, besides being incompletely consumed. If gasified, the products are hydrogen (H2), carbon monoxide (CO) and carbon dioxide (CO2). This is synthetic gas, simply called “syngas.” It can be burned, captured, stored, or its molecules rearranged to form fuels and chemical feedstocks.

The process is moderately more efficient than incineration, has significantly fewer emissions and waste, and the syngas can be shaped into a myriad of products for power production, chemical industries, liquid fuels, and heat.

Feedstock for gasification can be coal, the organic components of municipal waste, industrial waste streams, chemical feedstocks, forestry residues, forest products and crop residues, medical waste, unrecycled plastic or, in the case of plasma gasifiers, almost any nonradioactive material.

A gasifier is the central component of a gasification plant. Surrounding it are the feedstock conditioning and delivery systems, oxygen, steam and air input systems, waste removal components, syngas cooling and cleaning systems, power plants, heat recovery units, Fischer–Tropsch molecule rearrangers, and so on. This report focuses on the markets for gasifier units that are in place and will be installed by application segment and geographic location through the year 2017.

See on online.wsj.com

What Will Be the Next Technological Breakthrough in Energy?

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What technological breakthrough is most likely in the next 10 years that could completely change the energy equation as we now see it?

Duane Tilden‘s insight:

Jeffrey Ball: Information Technologies to Increase Efficiency, and Solar Power Seem Promising

Predicting new-energy technological breakthroughs tends to be a fool’s errand. A decade ago, few envisioned the breakthrough that has most rocked the U.S. energy world: the one-two punch of fracking and horizontal drilling that has unlocked huge stores of shale gas from California to New York.

Right now, two broad areas of new energy technology seem particularly promising: information technologies that could spur major energy-efficiency improvements; and cheaper and more-reliable solar power. […]

Study after study has pegged energy efficiency as the lowest-cost way to curb fossil-fuel consumption and the resulting greenhouse-gas emissions. The problem has been figuring out how to unlock those efficiency improvements in the real world. Today, creative minds are at work developing electronic systems to track and display the energy use of institutional and individual consumers in ways that could make those users much more conscious both about how much energy they consume and about precisely what they could do to cost-effectively consume less. More information, in short, could equal less power.

See on online.wsj.com

Renewable energy now cheaper than new fossil fuels in Australia | Bloomberg New Energy Finance

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Sydney, 7 February 2013 – Unsubsidised renewable energy is now cheaper than electricity from new-build coal- and gas-fired power stations in Australia, according to new analysis from research firm Bloomberg New Energy Finance.

Duane Tilden‘s insight:

[…] research on Australia shows that since 2011, the cost of wind generation has fallen by 10% and the cost of solar photovoltaics by 29%. In contrast, the cost of energy from new fossil-fuelled plants is high and rising. New coal is made expensive by high financing costs. […] New gas-fired generation is expensive as the massive expansion of Australia’s liquefied natural gas (LNG) export market forces local prices upwards. […]

[…] Australia’s fleet of coal-fired power stations built by state governments in the 1970s and 1980s can still produce power at lower cost than renewables, because their original construction cost has now been depreciated.

“New wind is cheaper than building new coal and gas, but cannot compete with old assets that have already been paid off,” Bhavnagri said. “For that reason policy support is still needed to put megawatts in the ground today and build up the skills and experience to de-carbonise the energy system in the long-term.”

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Emissions: First-time reports from industry reveal massive methane emissions — 02/06/2013 — www.eenews.net

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U.S. EPA’s addition of oil, gas and coal methane emissions to its online greenhouse gas tracking tool revealed an 82.6-million-metric-ton increase in carbon dioxide equivalents over numbers from the previous year, when those figures were not…

Duane Tilden‘s insight:

Coal power still dominates emissions

Last year, EPA completed standards requiring hydraulically fractured gas wells to use technology that will cut toxic emissions and smog-forming pollution by 2015.

As a co-benefit, the upgrades will also reduce methane by up to 1.7 million tons, said EPA. However, environmental groups have said that the methane issue must be addressed separately from other pollutants (ClimateWire, April 19, 2012).

Coal-fired power plants are the largest source of carbon emissions, outpacing the second-largest source — petroleum and natural gas systems — by a factor of almost 10-to-1. Power plants accounted for two-thirds of total greenhouse gas emissions.

See on www.eenews.net