Home Blog Page 304

Tech Giants Team Up to Promote Smart City Vision

Photo: Pixabay
Photo: Pixabay

Renewable energy asset management technology specialist Envision Energy has launched a new initiative to help accelerate the digitalisation of the clean energy transition.

The company late last week unveiled the Energy Internet of Things (IoT) and Smart City Technology Alliance, alongside Microsoft, Accenture and ARM. The group said it hopes to see more firms join the alliance at a later date.

The aim of the initiative is to make it easier to “unify the distributed and fragmented renewable energy space” through digital and smart technologies that integrate with renewable generation systems.

Envision Energy said the alliance would help integrate a range of different technologies that are currently being used to optimise renewables projects, such as wind and solar farms.

For example, Envision’s EnOS IoT platform helps developers operate and manage renewables assets, while Microsoft’s Azure Cloud Platform provides data storage and computing power, and Accenture’s Enterprise Service provides firms with application integration services

Envision said it was also intending to work with ARM technology to collect data from physical assets.

“[The Alliance’s] work positions the members at the forefront of the energy transition by seeking more efficient networks that interconnect buildings, industry parks, vehicles, power generation plants, electric distribution, storages and end-user consumptions that help make cities ‘smart’,” the group said.

Envision founder and CEO Lei Zhang said the group provided further evidence that the “old energy paradigm is breaking down and will be replaced by a new era of energy”.

“Envision is leading a global energy technology revolution in an open and collaborative way,” he said. “The purpose of this alliance is to accelerate the digital transition and solve challenges through great team work. Together we are dedicated to making the new era of beautiful energy a near-term reality.”

The group added that it would help deliver an increase in smart grid R&D and industry standardisation that would aid the deployment of smart city technologies.

Source: businessgreen.com

Saudi Arabia Looks Past Oil and Pushes Ahead with Wind Energy Ambitions

Foto-ilustracija: Pixabay
Photo: Pixabay

Saudi Arabia has resumed its efforts to launch the kingdom’s first large-scale wind farm, totalling 400 megawatts (MW), according to the country’s energy minister Khalid Al Falih. And there are plans for further tenders to kick off this year as part of a US$50 billion spending program on renewables within six years.

A request for qualifications for the wind project in the Al Jouf region in the north of the country was released on Sunday, marking the first step in a competitive bidding process.

The first round of Saudi Arabia’s National Renewable Energy Programme (NREP) included plans for projects that would generate 700MW of solar and wind power. However, only 300MW of solar power projects have hit the deadlines as laid out by the country’s Renewable Energy Project Development Office (Repdo).

Although the request for qualifications launch comes five months after the original target launch date of February 20, Mr Al Falih, insisted the kingdom’s renewable energy ambitions remain on target.

“As we enter the second half of the year, we remain committed to ensuring our ambitious programme remains on-track to deliver the value and opportunities targeted by the programme,” said Mr Al Falih.

After companies have been vetted to meet minimum standards, a request for proposals will be issued, currently slated for the end of August. Mr Al Falih said the timeline “ensures that we remain on course to tender 700MW in round one this year”.

The kingdom, plans to spend up to $50 billion to help meet its target of producing enough electricity from renewables to power the equivalent of 3 million homes within six years, Mr Al Falih had said in January.

The original site for the wind project was slated to be at Midyan in the north-western Tabuk province. Turki Al Shehri, head of Repdo, told The National in a phone interview that the Midyan project is still scheduled to be tendered at a future date after first completing further studies.

“Midyan is still in pre-development, but hopefully we will tender it fairly soon,” he said. “We didn’t want to postpone it too long, so we replaced (it) with the project in Al Jouf.”

Mr Al Shehri said the 24 companies that had been shortlisted for the Midyan wind project in April are being carried over into the new location, with the opportunity for new companies to join the race.

He said the ministry had seen a great deal of interest for its renewables programme, totalling around 600 expressions of interests from 48 countries. “There was a fairly large amount of companies that participated, but there were others that didn’t get the news,” Mr Al Shehri said.

The new Al Jouf location is in the same area as the 300MW solar project that is expected to be awarded in September. However, Mr Al Shehri said the projects were entirely separate, feeding power into two different substations.

Saudi Arabia, long known for its reliance on its oil and gas sector, began its shift towards economic diversification last year with its Vision 2030 plan. Among several bold initiatives for the reorganisation of the country’s economy, the plan marked the first time that the country had set out government targets for renewable energy.

In line with the vision and interim targets of Vision 2030, the kingdom is targeting the addition of 3.45 gigawatts (GW) of renewable energy to the national grid in just three years, scaling up to 9.5GW by 2023.

The Al Jouf wind project will be awarded in January, but there are more project tenders expected to come out this year.

“We aren’t done yet, you’ll see more projects this year,” Mr Al Shehri said.

Source: thenational.ae

Hive Energy Gets Green Light for Subsidy-Free 40MW Solar Park

Photo-illustration: Pixabay
Photo: Pixabay

Hive Energy has announced plans to develop a 40MW subsidy-free solar park in Hampshire after securing planning permission from the local council.

The renewable energy developer announced yesterday that Test Valley Borough Council has given the green light for the project to go ahead at Woodlington Farm near Romsey, with construction expected to finish next summer.

The site surrounds Hive Energy’s global headquarters and is expected to provide enough power to meet the needs of 9,100 average households using an on-site grid connection via energy supplier SSE.

According to Hive, it is estimated the solar park will save around 16,500 tonnes of carbon emissions a year, as well as enabling the firm’s R&D team to pilot and test their latest solar and storage technologies at the site.

Hive has also committed to producing a biodiversity management plan for the 25-year lifespan of the solar park, which will include the development of conservation areas, space for sheep grazing and the planting of new trees and hedgerows to encourage birds, bats, and insects. Moreover, the firm said the nearby River Blackwater would also benefit from pesticides no longer being used at the site.

Hive Energy CEO, Giles Redpath, said the firm’s latest project would help to make a “a significant contribution” towards meeting national renewable energy targets as well as boosting security of power supply.

“The project will also deliver positive social benefits for local people and support the development of innovative energy saving technology,” he said.

Founded in 2010, Hive Energy is the owner and operator of 18MW of UK solar sites and 30 commercial roof systems. The firm also previously developed the 49MW Southwick Estate Solar Park near Portsmouth, which was the UK’s largest grid connected PV when it was built in 2015.

Developers are increasingly confident that they can develop some prospective solar farms without recourse to subsidy. However, industry insiders remain concerned that a clearer route to market is still required to mobilise significant new investment in the sector.

Source: businessgreen.com

Korea Development Bank Issues $300 Million Green Bond For Renewable Energy Projects

Photo - ilustration: Pixabay
Photo-illustration: Pixabay

The Korea Development Bank has issued its first green bond aimed at funding implementation and expansion of renewable energy projects.

The Bank raised $300 million from investors in Asia, Europe, and the United States and offered “quarterly floating rate coupon of 3-month USD LIBOR plus 0.725% per annum to a maturity date of 6 July 2022.” Proceeds from the bond will be targeted at wind, solar, and biomass power projects.

Being a government-backed institution, the Bank’s bond issue was hugely popular among global investors who were willing to invest up to $650 million against the bond size of just $300 million.

Asia was allocated 46%, European accounts purchased 18%, while US-based accounts purchased the remaining 36%. By investor-type, bank treasuries took 32% of the issuance, fund managers 26%, central bank/sovereign wealth fund/agency 23%, pension 14%, private banks and others 5%.

Korea may not be a buzzing market in the global green bonds market, but it has seen some significant bond issues. Last year, the Export Import Bank of Korea issued a green bond, the first in three years, to raise $400 million. That issue, too, over-subscribed by about three times with investors willing to pour in $1.1 billion.

Hyundai Capital Services issued a unique green bond that aimed at providing debt finance to consumers buying hybrid vehicles. The $500 million bond issue attracted investment offers of $1.2 billion with more than half the investors hailing from non-Asian countries. The bond was named as the best in North Asia in 2016.

Source: cleantechnica.com

JLL UK Hits Energy Reduction Target a Year Early

Foto-ilustracija: Pixabay
Photo-illustration: Pixabay

Real estate consultancy JLL UK has hit 78 per cent of its 2016 sustainability targets, including achieving a 26 per cent reduction in absolute energy use since 2012, but missed key targets around staff training and client engagement with sustainability.

Reporting on a mixed bag of results in its 2016 Sustainability Report released late last week, JLL UK said it has made good progress on boosting recycling rates and cutting energy use across its offices. A particular achievement was the reduction of absolute energy use, it said, with JLL UK far outstripping its initial goal of delivering a 10 per cent cut by 2017.

However, it admitted progress in other areas slipped, in part due to external political and economic events. It had aimed to train 80 per cent of its staff on sustainability issues, but only 67 per cent had received such training by the end of last year. Likewise, it had planned to engage with clients to set a zero energy 2030 target aligned to EU law, but in light of the Brexit vote JLL UK CEO Chris Ireland said it had decided to “step back” from that goal.

The firm has set a new tranche of targets for 2020, including a pledge to achieve zero waste to landfill in all its corporate offices, cut absolute energy consumption a further nine per cent against 2012 levels, and source 100 per cent renewable electricity across it corporate estate.

“I want JLL to continue to play a leadership role in transforming the UK property sector and our aspiring targets for 2020 will certainly focus our efforts on achieving this,” Sophie Walker, head of sustainability at JLL, said in a statement. “By 2020, I want us to have integrated sustainability in to all our advice, supported the UK’s ongoing transition to a low carbon and circular economy and addressed the social issues where we can have the most impact.”

Source: businessgreen.com

Vivint Solar Continues Expansion With Move Into Virginia

Photo: Pixabay
Photo: Pixabay

One of the United States’ leading residential solar installers, Vivint Solar, has continued what is turning out to be an impressive year of expansion, by announcing that it has expanded into the state of Virginia.

At the beginning of the year, Vivint Solar only operated across 14 states, but that number has already grown to 20 states this year, with expansions into Rhode Island, Colorado, Vermont, New Hampshire, a return to Nevada after a two-year absence due to state-policies, and the newly announced expansion into Virginia.

The move into Virginia is both a massive opportunity and an interesting move. The US Energy Information Administration states that Virginia only generates 0.9% of its electricity from solar energy, with only 241.5 megawatts (MW) installed — though 192.4 MW of that was installed in 2016. Vivint Solar believes this represents “a great opportunity for rooftop solar in the state” — but I can’t help but wonder whether one of the reasons there is so little solar is that there is less interest in the state.

Nevertheless, Virginia Governor Terry McAuliffe has also recently signed clean energy legislation which aims to promote the use of solar and other renewable energy options around the state, giving Vivint Solar a good leg up in the state.

“We applaud Virginia’s commitment to grow its clean energy sector and are thrilled to bring Vivint Solar’s affordable solar energy services to this promising market,” said David Bywater, CEO of Vivint Solar. “With Vivint Solar, Virginia residents can take their first step toward energy independence and do so in a way that can benefit their wallets and the environment.”

Source: cleantechnica.com

India’s Tamil Nadu Allocates 1.5 Gigawatts Of Solar In Latest Tender

Photo: Pixabay
Photo: Pixabay

The south Indian state of Tamil Nadu has completed one of the largest solar power capacity allocations in the country. The state government recently confirmed that project developers have agreed to develop a 1.5 gigawatts of solar PV power capacity following a competitive auction.

Tamil Nadu Generation and Distribution Corporation (TANGEDCO) has announced that it awarded solar power projects with a cumulative capacity of 1,500 megawatts to 16 developers. All these projects have been awarded at Rs 3.47/kWh (5.4¢/kWh), the lowest tariff bid committed by 25 participating developers.

Last month, TANGEDCO received a massive response to the tender with project developers willing to set up 2.67 gigawatts of capacity against the offered 1.5 gigawatts of capacity. The bids submitted by the participating companies varied from Rs 3.47/kWh (5.4¢/kWh) to Rs 4.00/kWh (6.2¢/kWh), the maximum allowed bid.

A public sector company NLC Limited offered to place a bid to develop the entire 1.5 gigawatts capacity at Rs 3.97/kWh (6.1¢/kWh) but eventually agreed to do it to match the lowest tariff of Rs 3.47/kWh (5.4¢/kWh).

TANGDECO called upon all the developers to match the lowest bid and 16, including NLC, responded positively. Raasi Green Earth Energy, a lesser known developer in India, is believed to have bagged 100 megawatts; the company has placed the lowest bid. NLC was awarded 700 megawatts of capacity likely because some other developers refused to match the lowest bid.

The successful tendering is a major milestone for TANGEDCO which has been really struggling to attract solar project developers when compared to other states like Telangana, Karnataka, Andhra Pradesh and Rajasthan.

TANGEDCO had offered 500 megawatts solar power capacity in February 2016 but received bids for just 177 megawatts. The utility put 500 megawatts capacity on the block again in November 2016 but received bids for 300 megawatts only.

The power utility is known to be facing financial challenges accompanied by non-availability of ample grid infrastructure to support renewable energy projects. Tamil Nadu is already the largest wind energy producing state in India.

While project developers have been given up to 24 months to commission their projects, the longest ever in Indian history, they have chosen to quote tariffs which are at a significant premium to the current lowest solar power tariff in the country. ACME Cleantech Solutions currently holds the record for the lowest solar power tariff in India at Rs 2.44/kWh (3.8¢/kWh).

Source: cleantechnica.com

Porsche Installs $900,000 Solar Pylon & 1st High-Power EV Supercharger (350 kW) At New Berlin Office

Photo: Pixabay
Photo: Pixabay

Porsche is investing more than €15 million in new facilities in the German capitol region in and around Berlin. Part of that investment is represented in a pylon that stands in front of the company’s newest branch office known as the Porsche Center Berlin-Adlershof. The 80 foot high, 20 foot wide pylon is more than a corporate symbol.

Covered in 8,000 solar cells contained in 260 solar panels, the pylon in front of the new Berlin headquarters is expected to generate more than 30,000 kilowatt-hours of electricity every year — enough to meet the energy needs of the entire building it sits in front off. The photovoltaic pylon cost $900,000 to build. Completed in 16 weeks, the finished pylon weighs 88 tons.

The solar pylon is also a powerful symbol of Porsche’s commitment to electric automobiles. It is working feverishly on the first such car — a fully electric 4 door sports car called the Mission E, due out in 2019. Porsche expects the Mission E to also serve as the basis for more electric car products in coming years.

The company is also incorporating plug-in hybrid technology into several of its traditional models, starting with the Panamera sedan.

Don’t lose sight of the fact that Porsche is owned by Volkswagen, which has reclaimed its title as the largest auto manufacturer in the world, a distinction it lost in the aftermath of the diesel emissions cheating scandal that swept over it beginning in September, 2015. So, everything Porsche knows about building electric cars, Volkswagen knows, and vice versa.

One area critical to the success of electric cars that Porsche is anxious to address is high-speed charging infrastructure. Porsche CEO Oliver Blume told Top Gear last fall, “We are in contact with other manufacturers and suppliers around the world to build a fast charging network. Everybody has the same need. It sounds easy but getting the details agreed is hard. We already have the clear technical concept. It can even work with Teslas, with an adapter.”

The new Berlin office also features one of these high-power superfast-charging stations. The charging cords are water cooled, can charge various types of cars (including Teslas, with an adapter), and have a max power output of 350 kW (compared to the ~120 kW of a current Tesla Supercharger).

The charging station is supposed to be operational in autumn, but it’s not clear yet if Volkswagen or Porsche will have any EVs capable of going above 100 kW in the coming year or two.

Elon Musk once begged other carmakers to build “compelling electric cars.” Porsche says it is up to the challenge and anxious to join the ranks of top electric car manufacturers.

Source: cleantechnica.com

GE Energy Financial Services Will Invest $90 Million Into RattanIndia Solar

Photo-ilustration: Pixabay
Photo-illustration: Pixabay

GE Energy Financial Services will make a new investment in India’s renewable energy sector.

RattanIndia Solar will receive a $90 million investment from GE Energy Financial Services to develop 500 megawatts of solar power capacity across India. The two companies shall jointly develop the capacity. GE Energy Financial Services will have a 51% share in the venture while the balance will be owned by RattanIndia Solar.

RattanIndia Solar, a subsidiary of the RattanIndia Group, has participated in several competitive solar power auctions in a number of states. GE Energy Financial Services has already made investments in 210 megawatts of solar power capacity owned by RattanIndia Solar. These projects are located in Rajasthan, Uttar Pradesh, Karnataka, and Maharashtra.

GE Energy Financial Services has made several investments in India in the past. Among the most significant was the acquisition of equity stake in a 156-megawatt solar project of Welspun Energy. The project was the largest solar power plant in India at the time of the deal.

RattanIndia Power was in the news last year when it announced plans to replace its planned coal-based power plant in Punjab with a large-scale solar power project.

RattanIndia Power is reportedly planning to use 324 hectares of land in the northern state of Punjab originally earmarked for a coal-based power plant to set up a 200 MW solar power plant.

The company has dropped plans for the coal-based power plant after it failed to receive assurance of domestic coal supply. The issue of consistent fuel supply has dogged Indian thermal power plants for years and importing coal from other countries has not solved the problem either.

Thermal power plants in India, especially those owned by private companies, continue to face coal supply and cost issues. Operators like Tata and Adani are facing increased imported coal prices and have been vying the regulators to increase their tariffs at a time when solar power tariffs have become cheaper than cost of thermal power.

Source: cleantechnica.com

The Largest Wind Farm In The US Is Being Built In Wyoming, And Lawmakers Want To Raise Wind Tax

Photo-ilustration: Pixabay
Photo-illustration: Pixabay

There’s the Wyoming you see on postcards — the snow-dusted mountains and caramel-colored prairies where movie stars build their second homes. But there’s another Wyoming — the one that powers America’s homes and businesses. The Cowboy State churns out more coal than all of Appalachia, and it’s home to some of the strongest winds on the continent. The Rocky Mountains funnel air across flat, open prairies, producing winds that rival the most powerful ocean gales.

In Carbon County, Wyoming — so named for its abundant reserves of coal — conservative billionaire Philip Anschutz is building the country’s largest wind farm. Its 1,000 turbines could generate enough electricity to power every home in Los Angeles and San Francisco — electricity that will be shipped to California by way of a brand new 700-mile transmission line.

Anschutz, who owns the conservative news outlets The Weekly Standard and The Washington Examiner, has given millions to Republican politicians. But, despite his political leanings, and the promise of hundreds of construction jobs in Carbon County, his project — and others like it — have faced persistent headwinds in the Republican-dominated state legislature.

Earlier this year, legislators tried to prevent Wyoming utilities from selling wind power. The bill went nowhere, but it points to an undercurrent of hostility toward wind. Wyoming is currently the only state to tax wind power, and legislators have pushed to raise the wind tax from $1 per megawatt hour to $3 or $5. Anschutz’s business fought both proposed tax hikes, which died in committee.

Republican legislator Mike Madden, who championed these measures, made his feelings clear. “These wind guys,” he said, “they feel that they are just too good to be taxed.”

Madden, like his colleagues, is trying to fill a hole in the state budget. Wyoming has no income tax. Oil, gas and coal royalties supply most of the state’s revenue. Now, coal is in decline. Consumption is waning, and workers are losing their jobs. This has produced a budget shortfall for which there is no easy fix.

Under the current system, Wyoming effectively imports its tax revenue. Most coal is shipped to power plants out of state, meaning ratepayers in Texas, California and elsewhere pay the tax on coal. If you buy electricity from a power plant anywhere in the United States that burns Wyoming coal, you are helping to put Wyoming teachers in Wyoming schools and lay Wyoming asphalt on Wyoming roads.

In recent years, falling demand for coal has starved the state of essential revenue. Legislators need to fill the budget gap, but there is little interest in imposing an income tax. So they are slashing expenditures and looking to other sources of revenue.

Together, Wyoming’s powerful winds and budget woes have produced a peculiar cast of characters — in Anschutz, a conservative media magnate pushing for renewable energy, and in Madden, a pugnacious libertarian furiously trying to raise taxes.

Madden says he harbors no ill feelings toward wind. His motives are ideological. Asked if he felt a responsibility to protect coal jobs — which are fleeing the state in droves — he said, “I’m not interested in picking one of our resources and protecting it. That obviously is not my philosophy at all. I want the free market to pick it, not to have government politicians pick it.”

Madden is nothing if not consistent, and his approach to tax policy would strike many as reasonable. But experts warn against raising the wind tax at a time when the state is trying to attract developers and create new jobs.

“Wyoming is perceived by many wind developers to be kind of anti-wind,” said University of Wyoming economist Robert Godby. “Suddenly the state is suggesting that we might raise the tax by four or five times? That’s not conducive to economic development. Tax uncertainty is almost as bad as having high taxes.”

Wind is a multi-billion dollar opportunity for Wyoming. Anschutz’s wind farm and transmission line come with an $8 billion price tag. Renewable energy developer Viridis Eolia is building a $3 billion wind project. And Rocky Mountain Power is spending $3 billion in Wyoming on another wind farm and transmission line.

Godby fears the state’s perceived hostility toward wind could ward off future projects: “Imagine you’re in the board room of a major wind developer, and you’re suggesting a billion-dollar investment, and you say I’m going to put it in New Mexico or Nevada or Wyoming. The board might say, ‘Well, we’re not putting it in Wyoming.’”

Notably, Wyoming’s attitudes toward wind are about more than just money. Many in the Cowboy State see turbines as a blight on the landscape. Wyoming is defined by its jagged mountains and open prairies. Wind farms threaten to mar its most treasured vistas.

“You can be camping on the plains, maybe a sleeping bag rolled out on the ground, not even a tent over your head, and you can feel like you are on the same plains that Native Americans have experienced for millennia,” said Godby. “But then you turn around and look behind you, and the entire horizon might be red blinking lights from the wind turbines, and those really kind of infuriate people.”

A wind developer, who asked to remain anonymous, recalled a trip to the state capital: “One legislator in particular said, ‘We don’t want more wind. We want you to burn more coal.’ They say, ‘I hate wind. I hate seeing those turbines. They’re killing our landscape, and I just don’t like it.’”

Of course, attitudes may change. Wind turbines, now regarded as an eyesore, may come to represent industry, security and prosperity. To that end, Godby said legislators should leverage tax policy to attract more wind jobs.

“We could say, ‘Hey, If you build a wind facility, and the manufacturing of some of those components occurs in Wyoming, we will give you a tax break,’” he explained. This would draw new wind projects and manufacturing outfits, delivering a wealth of jobs and tax revenue. Wind energy, said Godby, “is the biggest opportunity presenting itself to the state.”

Wyoming finds itself in an unusual place. Nationwide, the shift to clean energy will likely create millions of jobs, but there will be winners and losers. Wind-rich Iowa will cash in on demand for cheap, low-carbon power, while coal-dependent West Virginia stands to lose more jobs than it gains. Wyoming straddles both sides of the energy divide.

Coal from Wyoming’s Powder River Basin is among the cheapest and purest around. Decades from now, when the final shipment of American coal heads to the last remaining coal-fired power plant, it will depart from a Wyoming mine. Along the way, that train will pass some of the most productive wind farms in the country.

How fast will the future come? It’s hard to say. Reflecting on the fate of wind in Wyoming, Rep. Madden conceded, “It’s a resource in a like manner to coal and natural gas and so on.” He then paused for a moment before returning to his favorite talking point: “I just think that it’s fair not to pick a favorite.”

Source: cleantechnica.com

Coral Reefs Show Signs Of Both Climate Stress & Resilience

Photo: Pixabay
Photo: Pixabay

Coral reefs are home to a vast array of ocean creatures. They provide food, protection against storm damage, sustain tourism and inspire wonder. “If we lose corals, we lose a vital piece of our planet,” said Kiho Kim.

Kim, a professor in the department of environmental sciences at American University, has been studying the fate of corals in our warming and increasingly polluted world — and he’s worried about what he’s found.

Recently, he and his colleagues examined the effects of nitrogen from sewage plants and septic tanks on coral skeletons in Guam, a U.S. territory that has undergone dramatic ecological changes over the last 60 years. Their research appears in the journal Marine Pollution Bulletin.

The diverse ecosystems that comprise coral reefs are suffering worldwide as a result of climate change, overfishing and pollution. Recently, scientists found warmer waters killed whole sections of Australia’s Great Barrier Reef.

Kim is concerned, but he also is optimistic, believing the much of the damage seen thus far is reversible. “We definitely see signs of pollution stress,” he said. But, “in general, reefs are resilient and can come back if the stressor is removed.”

His study didn’t look at the effects of ocean acidification, a result of carbon pollution. However, “acidification and warming exacerbate the impact of pollution,” he said, adding: “If we can clean up our coastal waters, perhaps the corals and other creatures can better adapt to climate change.”

He also notes that in areas where reefs lie near human settlements, “pollution probably plays a more important role than acidification in how healthy a reef is because changes in pollution levels have been so much greater,” he said.

When coral grow, they put down layers of skeleton, a process Kim likens to erecting an apartment building. “It starts with a single room, a single coral polyp which looks like a tiny anemone, that divides and builds another room occupied by a genetically identical coral polyp derived from the first one,” he explained.

“This allows the coral to grow horizontally,” he continues. “In addition, the coral grows vertically by adding additional floors. In the case of corals, only the top floor is occupied by the coral polyps. So when you take a core, you can see annual growth layers, or ‘floors.’ You actually have to take an x-ray of the core after you split it because the layers are not obvious to the naked eye.”

The team worked with coral on the eastern side of Guam, in the Togcha River watershed, where a community sewage plant dumps waste that flows downstream to the reefs. Kim and his colleagues extracted a single skeleton from a colony of massive coral near the mouth of the river, in water about 20 feet deep. They used a high pressure air drill attached to a scuba tank to remove a core more than two feet long.

They then capped the hole with a cement plug. Upon examining it later, they found coral tissue growing over the plug, indicating the coral was still healthy.

The researchers then measured the ratio of nitrogen isotopes in the coral. In the case of nitrogen, there are two isotopes: 15N and 14N, the numbers referring to the number of neutrons in the nucleus. Scientists measured the relative abundance of 15N and 14N isotopes in a biological sample by detecting the different weights of the two isotopes.

“For our study, we focused on nitrogen, which is commonly used in pollution studies because different sources of nitrogen have distinct ratios of heavy nitrogen (15N) to light nitrogen (14N),” he explains.

“Fertilizer, for example, has a low ratio of heavy nitrogen to light nitrogen,” he adds. “Sewage, on the other hand, has a higher ratio of heavy nitrogen to light nitrogen. By analyzing the ratio of heavy to light nitrogen in the biological material, we can figure out where most of the nitrogen came from. Often, it’s either fertilizer or sewage, the two common sources of nitrogen in coastal environments.”

In this case, not surprisingly, the damage came from sewage-derived nitrogen.

The scientists used a new method — a chemical technique developed by Princeton University scientist and study co-author Xingchen Wang — to extract the nitrogen from the coral skeletons for isotope analysis. The new process requires much less coral skeletal material, thus conserving more of the skeleton.

“The new method is able to analyze the actual skeleton rather than tissue remnants left in the skeleton,” he said. “Tissue remnants are not abundant, which means that the conventional method requires sampling a lot of skeleton in order to get enough tissue for the isotope analysis. With our new method, much less skeleton is required for sampling.”

The nitrogen pollution recorded by the researchers correlated with Guam’s population increases over the past 60 years. Between 1960 and 1980 alone, the population of the Togcha watershed grew tenfold.

The people of Guam “can do something about pollution,” Kim said. “Technology is available to remove nutrients like nitrogen from sewage, although it’s very expensive… But we have to weigh the costs of upgrading treatment plants against the costs of losing the reefs and the ecosystem. With the proper accounting, the math generally favors paying to protect the coral reefs and other coastal ecosystems.”

Source: cleantechnica.com

LONDON: New Waste to Energy Facility Opened

Photo-illustration: Pixabay
Photo-illustration: Pixabay

A new anaerobic digestion (AD) facility capable of processing more than 160,000 tonnes of food waste every year has been opened in London.

The waste to energy plant in Dagenham is expected to generate 14 million m3 of biogas – enough to power around 12,600 homes every year.

Developer ReFood claims it will help displace 73,600 tonnes of CO2, the equivalent of taking more than 14,400 cars off the road.

It is also expected to help London businesses reduce food waste costs by up to 47% – compared to a landfill disposal.

 – We’re committed to helping drive up London’s recycling rates as well as making London zero carbon by 2050 – Shirley Rodrigues, Deputy Mayor for Environment and Energy said.

 – This new facility, the first of its kind in London, is exactly the type of solution we need to help achieve this. Not only will it deal with London’s food waste but it will also produce clean biogas to help cut the carbon emissions of the gas grid – said Rodrigues.

ReFood Dagenham is the company’s third facility in the UK, adding to existing sites in Doncaster and Widnes.

Source: energylivenews.com15

This Dress Measures Air Pollution & Makes It Visible (VIDEO)

PrintScreen: YouTube/Nexus Media News
PrintScreen: YouTube/Nexus Media News

When Dominque Paul walks down the street, people stop and stare. Sporting silver go-go boots, a metallic wig and light-up dress, she looks like a David Bowie fever dream.

Paul’s outfit is more than just a fashion statement. It makes pollution visible. A device attached to her handbag measures airborne particulate matter and assigns a color to her dress based on the Environmental Protection Agency’s Air Quality Index. When the air is safe to breathe, her dress lights up green. When the air is contaminated, her dress turns yellow, orange, red or purple, depending on the level of pollution.

Paul debuted the dress as part of a residency with IDEAS xLAB, a nonprofit that uses art to raise awareness of public health issues. She has taken the dress out for walks in the South Bronx, which has some of the poorest air quality in New York City. Her goal is to spark conversations about air pollution.

Paul recently joined a walk organized by South Bronx Unite. The group’s president, Mychal Johnson, led a crowd through Mott Haven and Port Morris, neighborhoods in the South Bronx. They stopped every few blocks to talk about economic and environmental issues facing residents. Paul explained how the air monitor attached to her handbag measures fine particulate matter, microscopic bits of dirt and soot floating through the air. Vehicle exhaust is one source of particulates, which are small enough to enter the bloodstream and have been linked to lung and heart disease.

PrintScreen: YouTube/Nexus Media News

As she walked, Paul explained the Air Quality Index to those assembled. “Green is good,” she said. Yellow is worse. Orange means children and the elderly are at risk, and red means everyone may experience health effects. When it’s red, Paul said, “you might want to consider wearing a mask.” She raised her makeshift breathing mask like a flight attendant miming a safety demonstration.

“Right now, it’s fairly good,” Paul said, pointing to the lights on her dress, which oscillated between green and yellow. It was a weekend morning, she pointed out, with no rush-hour traffic, and the wind was blowing.

But, as the crowd paused on a walkway over the Major Deegan Expressway, Paul’s dress started to flicker between yellow and orange. The South Bronx is surrounded by freeways and overrun with diesel-powered garbage trucks. The asthma hospitalization rate among children living in Mott Haven and Port Morris is around three times the city average.

The air quality dress is not Paul’s only foray into wearable art. A previous dress changed color to represent the median annual household income in the surrounding neighborhood. Poorer neighborhoods registered red or orange. Wealthier neighborhoods registered yellow or green. Paul noted her median-income and air-quality dresses are nearly interchangeable. Poorer neighborhoods tend to be the most polluted, turning both outfits red. The heavily contaminated South Bronx is one of the poorest neighborhoods in the city.

Johnson raised his megaphone and shouted over the thunder of traffic. “We’re going to be doing monitoring of the air here, which we think is going to have extremely high rates of black carbon and [particulate matter] and other carcinogens that are found in vehicle emissions,” he said. Johnson pointed to a Fresh Direct distribution center being built along the river, which he said will bring more trucks to the neighborhood.

Johnson then introduced Markus Hilpert, associate professor of environmental health sciences at Columbia University, who is partnering with South Bronx Unite on an air quality study. Like Paul, Hilpert wore a portable air quality monitor. He took the megaphone and explained that his study would measure air pollution and truck traffic in the area.

“What’s very unusual is that you have major traffic arteries running through the community,” Hilpert said, “which carry around 100,000 vehicles a day.” He snapped his fingers: “On average, every second — boom, boom, boom — there’s a vehicle!”

Paul stood next to Hilpert, mask raised to her face and dress blinking, drawing the attention of those assembled. “You can stop people on the street wearing this,” she said. “There’s something about technology and lights changing color that attracts people’s attention. And once you get their attention — if you link it to their environment — then they’ll tell you their stories.”

Source: cleantechnica.com

ZZ Capital International Seals an International Renewable Energy Deal With Investment in Building Energy

Foto: Promo
Photo: Promo

ZZ Capital International Limited (‘ZZCI’), a global investment firm, announced that it has signed an agreement to invest in Building Energy 1 Holdings plc (‘Building Energy’). Building Energy is a global, vertically integrated, multi-technology (wind, solar, hydro and biomass) independent power producer (’IPP’). The investment will be made by way of purchase of convertible bond and equity interests.

The deal was sourced and led by ZZCI, which will be investing alongside Zhongzhi Capital (‘ZZC’) and which was introduced by ZZCI as co-investor . ZZCI is listed on the GEM Board of the Hong Kong Stock Exchange. The total amount of ZZCI’s and ZZC’s investment in Building Energy will be approximately €70 million. In addition to ZZC, ZZCI will also be investing alongside Synergo and Three Hills Capital Partners, which already hold stakes of 30% and 7%, respectively in Building Energy.

As part of the transaction, Building Energy will be redomiciled from Italy to the UK to benefit from the depth of London’s capital markets, the breadth of expertise in renewable energy in the UK and the supportive environment for high growth companies.

With operations already in more than 20 countries globally, Building Energy’s management team will work closely with ZZCI to expand the company’s footprint into China and other Asian markets.

ZZCI’s investment in Building Energy aligns closely with China’s 13th Five-Year Plan regarding initiatives in renewable energy, advanced technology and strategic transformation.

– Building Energy fits well within our investment strategy, which is focused on investing in entrepreneur and management-led companies operating in five key sectors and helping them to develop their business in China. Building Energy has a proven track record in the renewable energy sector, which is experiencing growing demand on a global scale. We look forward to working with Mr Zago and his management team to significantly expand the company’s operations and help build the business in China – commented the European Head of ZZ Capital International, Sergio D’Angelo.

– With the backing and expertise of ZZCI, Building Energy now has the ability to take advantage of growth in the Asian renewable energy market. We believe that the sector will continue to grow and that with the support of our partners at ZZCI we will expand significantly into China and other Asian markets – said Fabrizio Zago, CEO of Building Energy.

New Stacked Solar Cell Absorbs Energy from Almost the Entire Solar Spectrum

Photo: Pixabay

Most traditional solar cells aren’t able to convert long-wavelength photons into electricity. A team of researchers led by Matthew Lumb at The George Washington University is hoping to change that in order to capture more power. They’ve designed a solar cell that can harvest just about all of the energy in the solar spectrum – and it could become the world’s most efficient solar cell with an efficiency of 44.5 percent.

Photo: Pixabay

The scientists created a prototype of their solar cell that differs from most others: they stacked multiple solar cells to create a single device that can capture nearly all the solar spectrum’s energy. And as opposed to the solar panels that adorn many rooftops, this new solar cell utilizes concentrator photovoltaic (CPV) panels that concentrate sunlight onto micro-scale cells using lenses.

The cell works something like a sieve for sunlight, as each layer absorbs a certain set of wavelengths, to capture nearly half of available energy – most traditional cells only capture around one quarter.

Efficiency is one of the main goals of any researcher working on solar cells, and these scientists obtained what could be the highest efficiency in the world using materials based on gallium antimonide (GaSb) substrates. A technique called transfer-printing allows the tiny cells to be constructed with great precision.

But this groundbreaking solar cell wasn’t cheap. Still, though the materials utilized were expensive, the scientists think the technique to build the cells is promising to show how efficient a solar cell could be. In the future they think a similar product could hit markets “enabled by cost reductions from very high solar concentration levels and technology to recycle the expensive growth susbtrates.”

The journal Advanced Energy Materials published the research this week. 12 scientists from the United States Naval Research Laboratory and other American institutions collaborated with Lumb on the paper.

Source: inhabitat.com

Sustainable Solar Housing with Urban Farming to Take Root in Eindhoven

Foto: mvrdv.nl
Photo: mvrdv.nl

A sustainable green design is taking root in the Dutch city of Eindhoven. The city just selected MVRDV and SDK Vastgoed (VolkerWessels) as the winners for the redevelopment competition of the inner city area around Deken van Someren Street. The project, called Nieuw Bergen, comprises high-quality and sustainable residences topped with green roofs and powered by solar.

Billed as a contemporary and hyper-modern development, Nieuw Bergen will add 29,000 square meters of new development to Eindhoven city center. The project’s seven buildings will comprise 240 new homes, 1,700 square meters of commercial space, 270 square meters of urban farming, and underground parking. The sharply angled and turf-covered roofs give the buildings their jagged and eye-catching silhouettes that are both modern in appearance and reference traditional pitched roofs. The 45-degree pitches optimize indoor access to natural light.

“Natural light plays a central role in Nieuw Bergen, as volumes follow a strict height limit and a design guideline that allows for the maximum amount of natural sunlight, views, intimacy and reduced visibility from street levels,” says Jacob van Rijs, co-founder of MVRDV. “Pocket parks also ensure a pleasant distribution of greenery throughout the neighborhood and create an intimate atmosphere for all.”

Each of Nieuw Bergen’s structures is different but collectively form a family of buildings that complement the existing urban fabric. Gardens and greenhouses with lamella roof structures top several buildings. A natural materials palette consisting of stone, wood, and concrete softens the green-roofed development.

Source: inhabitat.com