All posts by Mngereza Mzee

About Mngereza Mzee

Field area : Energy resources, Sustainable energy development and Renewable energy technologies.

Renewable Energy Saves Significant Amounts of Water, Says New Report

IRENA newsroom

Realising the renewable energy plans of the Gulf Cooperation Council region (GCC) will result in a 20% reduction in water withdrawals in the power sector, according to a new report by IRENA.

The water saving potential of renewable energy is among the major findings in Renewable Energy in the Water, Energy and Food Nexus, released today on the sidelines of the World Future Energy Summit and International Water Summit in Abu Dhabi. The report provides a detailed analysis of how renewable energy can help address some of the most pressing challenges across the water, energy and food sectors.

NEXUS_FigE3

During the power generation stage, water needs for solar photovolatics and wind are negligible compared to conventional generation, which could require substantial amounts of water for cooling. Solar PV or wind use up to 200 times less water than a coal power plant to produce the same amount of electricity.

“Globally…

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The Job Creation Shuffle

Energy Institute Blog

Renewable energy proponents and advocates of the Keystone pipeline finally agree on something: that the right way to count “job creation” is to focus narrowly on the jobs in the industry they want to boost and ignore the overall impact on employment.  Unfortunately, researchers who actually study employment are not on board.

The “green jobs” movement is currently having a break out moment in California, just as the fight over Keystone is headed towards a final showdown, with proponents bellowing more about the thousands of workers who will briefly be employed building the pipeline than the dozens who will operate it.

LetsCreateJobs

Photo Credit: Forbes.com

The “job creation” justification for government energy policies isn’t new, but its support among economists remains in the range of, well, zero.[1]  In the last couple weeks I’ve pinged leading macro, labor and environmental economists – many of whom have worked in the Obama…

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Comparison between biofuels and hydrogen as alternative energy sources

Energy Vulture

The European Union (EU) considers both biofuels and hydrogen as viable sources of energy to replace fossil fuels.  Sobrino et al. (2010) examined, from an economic perspective, the advantages and disadvantages of replacing fossil fuels with biofuels or hydrogen in European vehicles.  Although each alternative source of energy has different reasons for being a plausible fuel replacement, the authors found more reasons for hydrogen to be the more environmentally friendly and economically sound choice. — Jenny Ward 
Fernando Herna ́ndez Sobrino, Carlos Rodrı ́guez Monroy, Jose ́ Luı ́s Herna ́ndez Pe ́rez. 2010. Critical analysis on hydrogen as an alternative to fossil fuels and biofuels for vehicles in Europe. Renewable and Sustainably Energy Reviews 14, 772–780

 The authors first discussed the different reasons for promoting the use of biofuels and hydrogen, which include: reducing the EU’s reliance on foreign oil, constraining the price growth of…

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Subsidies—Love Them or Hate Them, It’s Better to Target Them

iMFdirect - The IMF Blog

By Masood Ahmed

(Version in عربي)

For decades, countries in the Middle East and North Africa have relied heavily on food and fuel price subsidies as a form of social protection. And, understandably, governments have recently raised subsidies in response to hikes in global commodity prices and regional political developments.

Like many things, there may be a time and a place for using subsidies.But, they need to be better targeted. And, often, there will be better alternatives. Alternatives that do a better job of protecting the poor.

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Global Energy Subsidies Are Big—About US$5 Trillion Big

iMFdirect - The IMF Blog

By Sanjeev Gupta and Michael Keen

(Versions in 中文, Français, 日本語Русский and Español)

In their blog, Ben Clements and Vitor Gaspar make the points that global energy subsidies are still very substantial, that there is a strong need for reform in many countries, and that now is a great time to do it. This blog sets out what we mean by “energy subsidies,” provides details on their estimation, and explains how they continue to be high despite the recent drop in international energy prices (Chart 1).

Slide1

Our latest update of global energy subsidies shows that “pre-tax” subsidies—which occur when people and businesses pay less than it costs to supply the energy—are smaller than a few years back. But “post-tax” subsidies—which add to pre-tax subsidies an amount that reflects the environmental, health and other damage that energy use causes and the…

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What to do about gas prices?

Energy Smart

americansunitedforchange.org

Americans United for Change has launched a campaign to Free Our Oil! While an interesting response to the Republican focus on lying to support drilling, I challenged this campaign, stating that this effort supports a quite dangerous framing of the problems and solutions.

If we make this just about gas prices, we are caught into a very dangerous framing. “Lowering” gas prices gets people thinking back to cheaper energy unit costs days. We need people, the nation thinking about enery as a system, as a “cost to own” rather than “cost to buy”. We (the nation) should foster upfront investment (help it) that will lower total “cost to own” by reducing wasteful use of polluting energy. While difficult in a robocall, every single message (I would argue) should avoid getting captured in messaging that fosters thinking that we can go back to days of cheaper gasoline. Over the…

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Petronas Gas’ pre-tax profit and revenue up in Q1

Wata - Malaysian Oil and Gas Engineer

Dateline 2015-05-12, TMI:

Petronas Gas Bhd’s pre-tax profit rose to RM571.29 million for the first quarter ended March 31, 2015 from RM543.21 million recorded in the same period last year.

Revenue increased to RM1.1 billion from RM1.05 billion.

In a filing to Bursa Malaysia, Petronas Gas attributed the better performance to higher gas transportation and gas processing revenues, which recorded an improvement of RM26.1 million and RM21.5 million, respectively.

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Metocean Services International (MSI) has now established a new company based in Maputo, Mozambique

Top Logistic Provider | Custom Clearing Agents in Mozambique | Top Website | Despachante Aduaneiros |

Metocean Services International_1Metocean Services International

(2015-05-26) Metocean Services International (MSI) has now established a new company based in Maputo, Mozambique. Sondamar LDA, the third company in the MSI stable, has been officially registered in Mozambique to support clients in the oil and gas, port and harbour development and coastal engineering industries. The name Sondamar directly translates to ‘Survey of the Sea’ and reflects the values and experience of its parent company.

Metocean Services International in Mozambique
MSI has a track record in Mozambique spanning over 10 years, with a wide spread of experience geographically throughout the country, including the long term deployment of its personnel and the training of Mozambican nationals in the field of oceanography.

Most recently MSI has been working on a multiple location, multiple year metocean measurement project in Mozambique’s Rovuma Basin, for one of the world’s largest independent oil and natural gas exploration and production companies. The programme comprises…

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Malaysia committed to cut oil revenue dependence, says minister

Wata - Malaysian Oil and Gas Engineer

Note to self – search for new career.

Dateline 2015-04-23, TMI:

Minister in the Prime Minister’s Department Datuk Seri Abdul Wahid Omar said Malaysia had continued its effort to reduce national dependence on crude oil revenue, amid lower prices of the commodity.

Wahid, who is in charge of economic planning, said the country hoped to reduce dependence on oil to below last year’s contribution of about 30% to national income.

He said the country had been diversifying its economy.

“We have been consistently diversifying the economy to reduce dependence on the oil and gas sector,” Wahid said at the Invest Malaysia 2015 event in Kuala Lumpur today.

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From Carnegie: “Linking superconductivity and structure”

Science Springs

Carnegie Institution for Science
Carnegie Institution for Science

May 26, 2015

1The collapsed tetragonal crystal structure of , with arsenic (As) atoms in a 5-fold coordination, courtesy of Alexander Goncharov.

Superconductivity is a rare physical state in which matter is able to conduct electricity—maintain a flow of electrons—without any resistance. It can only be found in certain materials, and even then it can only be achieved under controlled conditions of low temperatures and high pressures. New research from a team including Carnegie’s Elissaios Stavrou, Xiao-Jia Chen, and Alexander Goncharov hones in on the structural changes underlying superconductivity in iron arsenide compounds—those containing iron and arsenic. It is published by Scientific Reports.

Although superconductivity has many practical applications for electronics (including scientific research instruments), medical engineering (MRI machines), and potential future applications including high-performance power transmission and storage, and very fast train travel, the difficulty of creating superconducting materials prevents it from being used to…

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