“[…] According to Paulo Emilio, this is the most efficient hydrogen bus in the world. “A European company tested a hydrogen bus in ten cities, which consumed 25 kilos of hydrogen for each 100 kilometers; this month, the same company launched an improved version, with 14 kilos of hydrogen consumed for each 100 kilometers” where as “our bus consumes just 5 kilos of hydrogen”, he says. […]”
On the face of it, Shipping is the most efficient of freight transport modes. Intermodal shipping containers kick-started rapid growth in trade globalisation 60 years ago, and container ships, tankers and bulk carriers have been getting bigger ever since. Carrying more freight with less fuel on a tonne-mile basis, shipping has the highest energy productivity of all transport modes.
Yet looks can be deceiving. While international shipping contributes 2.4% of global greenhouse gas emissions, business-as-usual could see this explode to a whopping 18% by 2050. As trade growth increases demand, today’s fleet burns the dirtiest transport fuels, and a new report shows the market doesn’t reward ship owners who invest in the latest fuel- and carbon-efficient technologies.
When you consider the scale of the sector’s emission reductions that need to start now to contribute to the COP 21 Paris Agreement target of 1.5°C to 2°C global warming, there’s clearly an…
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You’ve heard the good news on climate: after a century or more of continuous rise, U.S. CO2 emissions have finally begun to decline, due largely to changes in the energy sector. According to the Energy Information Agency (EIA), energy-related CO2 emissions in 2015 were 12% below their 2005 levels. The EIA says this is “because of the decreased use of coal and the increased use of natural gas for electricity generation.”
Is the EIA right in making natural gas the hero of the CO2 story? Hardly. Sure, coal-to-gas switching is real. But take a look at this graph showing the contributors to declining carbon emissions. Natural gas displacement of coal accounts for only about a third of the decrease in CO2 emissions.
By far the biggest driver of the declining emissions is energy efficiency. Americans…
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Originally published on Solar Love. A new study has concluded that utility-scale solar PV systems across the US are “significantly” more cost effective than rooftop solar PV systems. Sp…
Sourced through Scoop.it from: cleantechnica.com
“[…] the study, conducted by economists at global consulting firm The Brattle Group, found that utility-scale solar PV systems were more cost effective at achieving the economic and policy benefits of PV solar than rooftop or residential-scale solar was.
The study, Comparative Generation Costs of Utility-Scale and Residential-Scale PV in Xcel Energy Colorado’s Service Area, published Monday, is the first of its kind to study a “solar on solar” comparison.
“Over the last decade, solar energy costs for both rooftop and bulk-power applications have come down dramatically,” said Dr. Peter Fox-Penner, Brattle principal and co-author of the study. “But utility-scale solar will remain substantially less expensive per kWh generated than rooftop PV. In addition, utility-scale PV allows everyone access to solar power. From the standpoint of cost, equity, and environmental benefits, large-scale solar is a crucial resource.”
The study yielded two key findings:
- The generation cost of energy from 300 MW of utility-scale PV solar is roughly 50% the cost per kWh of the output from an equivalent 300 MW of 5kW residential-scale systems when deployed on the Xcel Energy Colorado system, and utility-scale solar remains more cost effective in all scenarios considered in the study.
- In that same setting, 300 MW of PV solar deployed in a utility-scale configuration also avoids approximately 50% more carbon emissions than an equivalent amount of residential-scale PV solar. […]
The report itself was commissioned by American thin-film photovoltaic manufacturer and utility scale developer First Solar with support from Edison Electric Institute, while Xcel Energy Colorado provided data and technical support. Specifically, the report examined the comparative customer-paid costs of generating power from equal amounts of utility-scale and residential/rooftop-scale solar PV panels in the Xcel Energy Colorado system.
A reference case and five separate scenarios with varying degrees of investment tax credit, PV cost, inflation, and financing parameters were used to yield the report’s results.
The specifics of the study’s findings, which imagined a 2019 Xcel Energy Colorado system, are as follows:
- utility-scale PV power costs ranged from $66/MWh to $117/MWh (6.6¢/kWh to 11.7¢/kWh) across the five scenarios
- residential-scale PV power costs were well up, ranging from $123/MWh to $193/MWh (12.3¢/kWh to 19.3¢/kWh) for a typical residential-scale system owned by the customer
- the costs for leased residential-scale systems were even larger and between $140/MWh and $237/MWh (14.0¢/kWh to 23.7¢/kWh)
- the generation cost difference between the utility- and residential-scale systems owned by the customer ranged from 6.7¢/kWh to 9.2¢/kWh solar across the scenarios
The authors of the report put these figures into perspective, including the national average for retail all-in residential electric rates in 2014, which were 12.5¢/kWh. […]”
Photo: Top Viewed Article of the year on Water Vortex Hydro-Electric Power Plant Designs
This is going to be a fun post to write, as I get to review the statistics for 2015 and pick out the ten most viewed posts on my blog for the year. I am looking forward to performing this review, as I get to find out what works and what does not. The idea being to give me a chance to refine my techniques and improve my blog posts.
I am listing them in reverse order as we want to heighten the suspense, leading up to the most viewed article. Each post will also have the posting date and number of views for comparison. I know this technique is not perfect as some posts will have a longer opportunity to be seen than those written later in the year. Such discrepancies will be left to discussed in a future article.
This post discusses Earth’s wandering magnetic poles, the fluctuating field strengths and links to solar weather and climate change. Some rather eccentric, yet plausible explanations based on historical data that pole shifts are possible and have happened, at unpredictable, largely spaced intervals of hundreds of thousands to millions of years, the average being 450,000 years.
Posted on March 3, 2015 and received 44 views.
Headline tells it all. Large bank caught helping clients evade taxes and launder illegally obtained money through bank accounts.
Posted on February 9, 2015 and received 48 views.
Coal is unclean to burn and becoming costly to do operate due to emissions, resulting in coal fired plant closures, 9 by one Michigan utility.
Posted on February 10, 2015 and received 50 views.
This article simply reprises, in part, the LCCA (Life-Cycle Cost Analyisis) procedure used for buildings as originally posted by WBDG.
Posted on February 15, 2015 and received 57 views.
The article discusses the role of large scale energy efficiency programs as an investment and means to achieve certain goals when viewed as the “cheapest” fuel. The graphic depicts a hierarchy of waste minimization correlating to cost and energy usage and effects with the environmental resources.
Posted on January 8, 2015 and received 59 views.
According to the latest “Energy Infrastructure Update” report from the Federal Energy Regulatory Commission’s (FERC) Office of Energy Projects, renewable energy sources (i.e., biomass, geothermal, hydroelectric, solar, wind) provided nearly half (49.81 percent – 7,663 MW) of new electrical generation brought into service during 2014 while natural gas accounted for 48.65 percent (7,485 MW).
Posted on February 4, 2015 and received 62 views.
Tens of thousands of Fukushima residents remain in temporary housing more than four years after the horrific disaster of March 2011. Some areas on the outskirts of Fukushima have officially reopened to former residents, but many of those former residents are reluctant to return home because of widespread distrust of government claims that it is okay and safe.
Posted on July 22, 2015 and received 65 views.
The company plans to employ 150 full-time Apple staff at the Mesa, Arizona, facility… In addition to the investment for the data center, Apple plans to build a solar farm capable of producing 70-megawatts of energy to power the facility. […] Apple said it expects to start construction in 2016 after GT Advanced Technologies Inc., the company’s sapphire manufacturing partner, clears out of the 1.3 million square foot site.
Posted on February 11, 2015 and received 73 views.
With regard to [battery] energy storage systems, many people erroneously think that the only cost they should consider is the initial – that is, the cost of generating electricity per kilowatt-hour. However, they are not aware of another very important factor. This is the so-called LCOE, levelized cost of energy (also known as cost of electricity by source), which helps calculate the price of the electricity generated by a specific source.
Posted on January 27, 2015 and received 109 views.
Austrian engineer Franz Zotlöterer has constructed a low-head power plant that makes use of the kinetic energy inherent in an artificially induced vortex. The water’s vortex energy is collected by a slow moving, large-surface water wheel, making the power station transparent to fish – there are no large pressure differences built up, as happens in normal turbines.
Posted on June 11, 2015 and received 109 views.
Efficient Drivetrains and American Repower are partnering to convert a fleet of six armored vans to run on compressed natural gas with a plug-in hybrid.
Sourced through Scoop.it from: www.autoblog.com
>”When hauling around massive amounts of money and valuables around Southern California, security is generally a much bigger concern than fuel economy. However, the need for vehicles to become more efficient is hitting every segment, even armored vans. That’s why Efficient Drivetrains Inc. and North American Repower are teaming up to convert six of these 26,000-pound behemoths run on natural gaswith a plug-in hybrid offering additional help. The first one should be hauling riches for Sectran Security around Los Angeles in 2016.
All three companies are already positioning the upcoming conversion as a win-win solution to current issues. The armored vehicles can still do their job of hauling money around the LA area but with a claimed 99.9 percent reduction in emissions from the current diesel engines. Generally, the vans make frequent stops while at work but must stay running for security reasons. This can potentially run afoul of California’s rule not to let diesels idle more than five minutes. With this upcoming version, drivers will be able to go electrically between stops and then will use the natural gas when cruising.
This work combines the strengths of both firms working on these vehicles. North American Repower already specializes in natural gas engine management and conversions, and Efficient Drivetrains is very familiar with the world of plug-ins. The funding for the project includes a $3-million grant from the California Energy Commission, plus the same amount in private funds.”<
North American Repower and Efficient Drivetrains, Inc. to Deliver First PHEV-RNG Armored Truck
Collaboration reduces emissions by 99.9 percent
OCEANSIDE, Calif. & MILPITAS, Calif.–(BUSINESS WIRE)–Two global leaders in developing and manufacturing advanced transportation vehicles have teamed up to manufacture a first-of-its-kind fleet of Class-5 armored vehicles that combine the benefits of Renewable Natural Gas (RNG) and zero emission Plug-In Hybrid Electric Vehicle (PHEV) technology.
“We’re excited to be partnering with EDI on this breakthrough innovation”
North American Repower—California’s leading natural gas engine management and conversion technology company— and Efficient Drivetrains, Inc.—a global leader in developing high-efficiency Plug-in Hybrid Electric Vehicle solution—will convert a fleet of six 26,000 pound, Class-5 medium-duty armored vehicles operated by Sectran Security into PHEV vehicles that run on electricity and renewable natural gas—known as “Zero Emission with Range Extension” vehicles. The collaboration supports the dramatic acceleration in California toward a zero emissions environment. Today, the Sectran Security trucks make frequent stops as part of their highly congested urban routes. At each stop, the engines are kept idling for security purposes, but now risk violating California’s strict diesel idling regulations, which prohibit idling the engine for more than five minutes. With the modernized trucks, Sectran can completely eliminate engine idling by operating in all-electric mode during stop-and-go operations on urban routes and in hybrid-mode during highway operations. When complete, the vehicles possess impressive performance statistics—the demonstration trucks will enable Sectran to reduce annual diesel consumption by 31,000+ gallons, significantly reduce annual fuel costs, and reduce emissions by 99.9 percent. […]”<