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Showing posts with label Wind. Show all posts
Showing posts with label Wind. Show all posts

July 3, 2015

CERC has proposed new norms for forecasting, scheduling and imbalance handling of renewable power…

 

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The new regulations for scheduling solar and wind power for transmission through the grid could escalate prices.

If the power generator deviates from its schedule and under supplies, it would be liable for a penalty. The penalty amount, which would be calculated as per unit energy shortfall, will go in a pool - Renewable Regulatory Fund (RRF). The amount from this fund would be shared among all the states buying from that power plant in the ratio of their peak demand during the previous month. States defaulting on buying renewable power as prescribed under their renewable purchase obligation (RPO), too, would have to pay a penalty.

The Central Electricity Regulatory Commission (CERC) has proposed norms for forecasting, scheduling and imbalance handling of renewable power. It says that the power generator would be paid for the energy supplied to the grid and not the capacity tied up.

The wind or solar power generator would have to use tools to forecast power generation from its plant and then schedule power sale accordingly in the grid.

"Renewable Energy Management Centres (REMCs) are being established and these would be equipped with advanced forecasting tools... the buyer would be paying tariff for the energy scheduled to the wind/solar energy generators," said the draft regulations. The scheduling would be done by regional load despatch centres (RLDCs).

The industry finds the proposal not in sync with the government's target to add 1.75 gW of renewable power by 2022.

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February 26, 2015

Mytrah Energy bagged 220 MW Wind Project from Andhra Pradesh Government

 

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Mytrah Energy has bagged a 220 MW wind power project from the Andhra Pradesh government.

The project will be installed in Kurnool district and is expected to be commissioned within next 18 months. 

Mytrah has built an operating portfolio of 543 MW across seven wind rich states in a span of four years.

According to company, it has 300 MW under construction and 3,500 MW of identified projects in the pipeline.

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Mytrah Energy secured Rs 853 Crs loan for its 150 MW wind projects

 

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London-based Mytrah Energy Ltd has secured an Rs 853 Crs long-term loan from an unnamed Indian bank to finance 150 MW of wind projects.

The company expects to completed the said capacity in the coming 12 months, before India's 2016 wind season kicks off.

According to the company, the proposed capacity will be completed within 12 months.

With the new wind farms, Mytrah’s nominal capacity will top 690 MW.

So far, the firm has installed 543 MW of wind parks across six Indian states and it has 3,500 MW of projects in the pipeline.

Last week, Mytrah agreed to construct a 220-MW wind park in the Indian state of Andhra Pradesh within 18 months under a deal with the local government.

India aims to boost its installed renewable plant capacity to a total of 170 GW by 2022, up from 34 GW at present.

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February 25, 2015

Suzlon commissioned 350 Wind Projects in Brazil

 

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Suzlon Group has commissioned wind energy projects having a total capacity of 350 MW in Brazil.

This projects are located in the high wind states of Rio Grande do Norte and Ceara in Brazil.

The installations include 150 wind turbine generators.

These projects will contribute to reducing Brazil's carbon footprint by eliminating approximately 0.54 million tonnes of carbon dioxide emissions per annum.

The 350 MW projects completed are expected to light up one lakh households in Brazil with clean energy.

Suzlon entered the Brazilian market in 2008 and has since created a cumulative installed capacity of approximately 750 MW.

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February 21, 2015

Report on India’s Renewable Electricity Roadmap 2030—Toward Accelerated Renewable Electricity Deployment

 

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The “Report India’s Renewable Electricity Roadmap 2030—Toward Accelerated Renewable Electricity Deployment” was released at the Renewable Energy Global Investors Meet & Expo (RE-INVEST 2015).

The report was brought out by NITI Aayog with support of CII, Shakti Sustainable Energy Foundation and RAP (Regulatory Assistance Project), a global non-profit group, talks about the current scenario of renewable energy in India and what needs to be done for its accelerated deployment to address energy security concerns.


Shri Piyush Goyal, Union Minister of State (IC) for Coal, Power and New & Renewable Energy, lauded NITI Aayog for the report and said that it has instilled a lot of hope for following more ambitious targets. “We need to create an enabling environment with respect to clearance, land acquisition and other regulatory support.”

The Minister suggested that the land owners, who provide their land for setting up renewable energy projects, could be given a stake in the projects as an incentive. He urged NITI Aayog to help in creating some innovative model for the RE sector. He addressed the panelists while sitting in the audience.

Commenting on the launch of the report, Smt Sindhushree Khullar, CEO, NITI Aayog- Govt of India stated that this is the first initiative of the Aayog. “Energy and renewable energy is a core area in India. We need to see actual movement on whatever the report suggests about,” said Smt Khullar.

Mr Deepak Gupta, Senior Programme Manager- Power, Shakti Sustainable Energy Foundation, said that the report suggests possible roadmap to achieve ambitious targets in the renewable sector after assessing several best practices around the world.

The panelists were of the opinion that India needs to keep renewable energy as a matter of national importance. They suggested that the need of the hour is to move away from the current practice and make RE as an integral part of the power sector. For this a comprehensive national policy framework would be required for smoother renewable projects development in the country.

Mr Mackay Miller, Technology Innovation Analyst, NREL, congratulated the Indian government for its ambitious RE targets and intent to attain that goal. He suggested that there is need to think about policy and financing mechanism so that investments take place.

Smt Varsha Joshi, Joint Secretary, Ministry of New and Renewable Energy, lauded the report terming it as a good effort by the compilers. “It’s time that India has to look at RE as a resource across the states. There are a lot of things to be learned and a lot to be done,” she said.

Shri Sumant Sinha talked about thinking ‘out of the box’ to operationalise the issues highlighted in the report. “Why can’t we make renewable energy as the backbone of India’s electricity generation? We have to re-think our entire reliability on coal. Discoms are reluctant on buying renewable power against highly subsidised conventional power,” Shri Sinha noted.

Getting fund is seen as one of the major challenges. However, Shri Rajat Misra, VP, SBI Capital Markets Ltd is of the opinion that funding is not a constraint if there is good policy in place.

Shri SK Soonee, CEO, POSOCO, raised the issue of grid as one of the major hurdles in increasing renewable potential. The experts stressed that renewable energy could be the backbone of Indian power scenario provided existing issues are addressed. They objected to having coal as the preferred power choice just because it is available beneath the earth.

Smt Khullar stated that there is misconception in India that renewable energy is for rich. She asked everyone to be a part of this movement in renewable energy. “We are starting this journey with great hope and we should walk together to make it happen,” Smt Khullar concluded.

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February 17, 2015

Inox Wind signs MoU for 700 MW Wind Power Project with Gujarat

 

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Inox Wind has signed a Rs 4,500 crore preliminary agreement with Gujarat for setting up a 700 MW wind power plant in the state.

The MOU will be implemented over next 2 years in 3 districts of Gujarat - Rajkot, Amreli and Kutch.

According to the company, it had an order book of 1,258 MW as of December 31. Inox's customers include Green Infra, Continuum Wind Energy, Tata Power, Welspun Energy, Bhilwara Energy, ReNew Power Ventures, Hero Future Energies and a subsidiary of CESC.

In Madhya Pradesh, it is setting up an integrated wind turbine manufacturing facility.

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Mytrah Energy received contract for 220 MW Wind Power Project by AP Government

 

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Mytrah Energy ltd has received a 220 MW Wind Power project from the Andhra Pradesh Government.

The project will be installed in Kurnool district and is expected to be commissioned in 18 months.

Mytrah energy currently has an operating portfolio of 543MW across seven wind rich states.

In addition, the company has 300MW projects under construction and 3,500MW of identified projects in the pipeline.

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February 16, 2015

Andhra Pradesh signs MoUs for 4200 MW of Renewable Energy Projects and unveils policies for Solar & Wind Energy

 

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Andhra Pradesh Government signed Memorandum of Understanding (MoUs for generation of 4,000 MW of wind power and 200 MW of hybrid power in the State during the first Renewable Energy Global Investors Meet and Expo (RE-INVEST).

Andhra Pradesh Government also policies for the wind and solar power projects. 

According to the State Government, around Rs 8.5 billion investment is expected in the transmission & distribution and a huge investment in solar power projects.

The State Government has assured the green energy investors speedy clearances, several exemptions, faster execution schemes, vast land bank, committed bureaucracy and political will for the effective and efficient development of Renewable Energy Projects in the State.

The State Government has proposed the investors to enter into tripartite agreements with the State Discoms and State Government.

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February 15, 2015

Welspun Renewables Makes a Green Energy Commitment of 11,001 MW

 

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Welspun Renewables, India’s leading renewable energy generator has pledged to set up mega 11 GW solar and wind projects across the country.

The 11001 MW capacity will be developed as 8660 MW of solar and 2341 MW of wind power projects. . In line with supporting Prime Minister Narendra Modi’s vision of 100 GW, Welspun Renewables will be formally announcing this commitment in the presence of Honorable Shri Modiji and other prominent global and national policymakers tomorrow morning at RE-INVEST.

Statement made by Mr. Mittal on this occasion: “We believe in Honorable Prime Minister Modi’s vision and are committed to doing our utmost in exponentially increasing India’s green energy capacities. Under the aegis of Shri Modiji India has emerged as one of the most conducive regions for renewable energy development. Our 11001 MW commitment is a direct reflection of how the solar and wind energy industries will be growing in the future. We would like to thank both the MNRE and the state governments for giving us their support in developing our current and previous projects.”

Welspun Renewables will be commissioning over 1 GW of solar and wind capacities well within this calendar year - December 2015.

Source: Welspun Press Release

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2,66,000 MW Renewable Energy Projects commitment given by 293 companies

 

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During the first Renewable Energy Global Investors Meet (RE-Invest), commitment to develop as much as 2,66,000 MW of Renewable Energy Projects has been given by around 293 companies. 

Some of them have also assured to put up equipment manufacturing plants as well.

 

  • Renewable energy companies including Suzlon and Gamesa have committed to manufacture equipment to help generate 11,000 MW and 7,500 MW of power respectively to be used in the non conventional energy side.
  • Country's largest power producer NTPC has also said it would generate 10,000 MW of power through green sources in the next five years.
  • Among others are Welspun Energy with a target to generate 11,000 MW renewable energy, followed by ReNew Power 11,500 MW capacity, Reliance Power 6,000 MW, Hindustan Powerprojects 10,000 MW and Sun Edison 15,000 MW.

Country's biggest lender SBI has said it will finance 15,000 mw renewable energy over the next five years.

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SBI commit Rs 75,000 Crs loan for 15,000 MW of Renewable Energy Projects

 

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State Bank of India (SBI) committed Rs 75,000 Crs for the 15,000 MW capacity of Renewable Energy Projects to be executed in next 5 years.

Current exposure of SBI is Rs 1,78,000 Crs in the power sector including conventional energy projects as well as Distribution Utilities.

However, SBI has denied any concessional rate of interest for the Renewable Energy Projects as per the current norms. According to it the rate be reduced provided RBI classifies the renewable energy in the priority sector lending category which would provide incentives to banks for lending to this segment.

As per RBI norms, banks have to necessarily lend 40 per cent of the total loans towards priority sector category.

 

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January 27, 2014

Orient Green Power's generation capacity crosses 500 MW…

 

Orient Green Power's generation capacity crosses 500 MW…

Orient Green Power, part of the Shriram Group, today announced its generation capacity has crossed 500 MW and it is keenly evaluating major opportunities to propel growth.

"Post commissioning of biomass plants at Madhya Pradesh (Narsinghpur), Rajasthan (Kishanganj) and Andhra Pradesh (Marikal), the on ground operational capacity of the company now exceeds 500 MW," Orient Green Power Ltd (OGPL) said in a release.

The company's operating capacity stands at 502 MW comprising 416 MW of wind assets and 86 MW of biomass assets.

Orient Green Power has its wind assets located across various states namely, Tamil Nadu, Andhra Pradesh, Gujarat and Karnataka.

Its biomass plants with a total capacity of 86 MW are situated in Tamil Nadu, Rajasthan, Madhya Pradesh, Andhra Pradesh and Maharashtra.

The company said it is keenly evaluating major opportunities arising in the space especially wind business, which could further propel its growth of the business.

"This milestone of 500 MW represents capacities which are installed and operating with fuel sourcing arrangements and power off take contracts in place," S Venkatachalam, Managing Director OGPL, said.

He added, "In addition to our existing capacity, we are close to commissioning another 40 MW of capacity under our wind and biomass verticals which will help us to further consolidate our position as a leading player in the renewable energy business."

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January 23, 2014

Renewable energy projects worth Rs 30,000 crore being implemented in Madhya Pradesh…

 

Renewable energy projects worth Rs 30,000 crore being implemented in Madhya Pradesh…

Renewable energy projects worth Rs 30,000 crore are being implemented in Madhya Pradesh, which have quietly reached out to companies and attracted GE, Reliance Power, Spanish wind major Gamesa and others, giving tough competition to Gujarat in the sector.

The buzz of activity has catapulted the state to the top slot of renewable energy in the country where Narendra Modi's Gujarat was hailed as the most successful state in the sector. MP's Chief Minister Shivraj Singh Chauhan has accelerated the state's drive for renewable energy, helping it expand rapidly and kickstart many projects, including 4,600 mw of being executed, state government officials said.

The state invited proposals in November 2012, seeking investments to the tune of Rs 10,000 crore, with the full backing of Chauhan. "The chief minister gave us a blank cheque and complete support to go ahead with our plan to develop renewable energy in the state.

The idea was to set a plan in place and first see the results on the ground rather publicise just a policy on paper," said S R Mohanty, secretary, new and renewable energy department, Madhya Pradesh. The state has made things easy for investors.
Renewable energy projects worth Rs 30,000 crore being implemented in Madhya Pradesh To set up a wind project, the developer has to just submit a resource assessment report of any site in the state. It applies for solar, bio and hydel as well, where if the selected site is government's land, the developer gets it for the life of the project i.e. 25 years.

In case of private land, the government facilitates the acquisition. Finding a good site and getting clearance for it is a major hassle in the wind sector. So when the land is made available by the government, it simplifies the whole process. The state's policy, no doubt is simple and transparent," said Sunil Jain, managing director, Hero Future Energies.

Hero has 208 mw of wind and 50 mw of solar power project underway in the state. While there is a National Solar Mission at the central level, state policies on solar power are quite ambiguous, the only exception was Gujarat.

The Modi-ruled state was an early mover in the sector even before the PM announced the national solar mission. In 2010, Gujarat signed around 88 solar power purchase agreements with 75 developers for 25 years with tariff as high as Rs 12.54 per unit without competitive bidding. But Gujarat backtracked on the tariff last year as tariffs of new projects fell to half of Gujarat's rates, compelling the state to appeal to apex electricity regulator for revision in tariff.

Gujarat has an installed capacity of 852 mw in solar and 3,114 mw in wind as on March 2013. MP however has given developers much more freedom to sell power. They can sell outside the state; take the national solar mission or renewable energy certificate route, or sign a PPA. Sanjay Chakrabarti, partner & cleantech sector leader at Ernst & Young said MP is the new Gujarat for renewable power producers.

"In the last one year, maximum addition in renewable based power capacity has happened in MP. More than the policy, it's the strict execution and political stability that has helped invite investments in the state," he said.

"Gujarat had an ambitious feedin tariff policy while MP has a bigger focus on projects not getting feed-in tariff. For such projects, the efficiency rate in MP is higher as there is government support in getting clearances, choice of sale of power and transmission infrastructure," said Bharat Bhushan Agrawal, senior analyst (solar) at Bloomberg New Energy Finance. Sumant Sinha, founder and CEO of Renew Power said that MP could become an interesting state for investment in renewable.

"The state would see a good addition in solar and wind.It has a lot of room for investment with the government adopting a high degree of openness and facilitation," he said. Investors seem bullish about MP may be due to the ease of getting land, clearances and grid connectivity," said Agrawal.

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SJVNL's Maharashtra wind energy project starts generation…

 

SJVNL's Maharashtra wind energy project starts generation…

Public sector hydropower major Satluj Jal Vidyut Nigam Ltd's (SJVNL) maiden wind energy project in Maharashtra has started generation, a senior company official said in Shimla Wednesday.

"Fifteen of the 56 wind power turbines of 47.6 MW Khirvire project in Ahmednagar district have started generating energy," SJVNL deputy general manager Vijay Verma told agency.

The project, with an annual energy generation of 85.65 million units of electricity, would be fully commissioned by March this year, he said.

For its commissioning, SJVNL has entered into an agreement with Spanish company Gamesa Corporacion Tecnologica.

SJVNL is a joint venture between the central and the Himachal Pradesh governments. The former holds 74.5 per cent stake, while the remaining 25.5 per cent is held by the state government.

However, the central government sold 10 percent equity in May 2010.

SJVNL's maiden project in Kinnaur district of Himachal Pradesh started generation in 2004-05.

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January 21, 2014

Suzlon to list REpower on LSE this year: Sources…

 

Suzlon to list REpower on LSE this year: Sources…

Debt-ridden  Suzlon Energy is looking to list its 100 percent owned German subsidiary REpower on the London Stock Exchange this year. IPO size is likely to be around USD 600-750 million, with Suzlon diluting 40-50 percent of its total stake.

This pegs REpower’s expected valuation at USD 1.2 billion. Sources say Suzlon Energy will use the proceeds from the IPO to repay German banks and domestic lenders. REpower owes as much as 750 million euros to German banks, who have ring-fenced the company’s finances.

This has been Suzlon’s biggest challenge as the wind turbine maker is unable to access the Germany subsidiary’s cash reserved to repay its debt. Suzlon's total debt stands at Rs 14,155 crore, of this, Rs 9500 crore is getting restructured under the Corporate Debt Restructuring (CDR) cell.

The company had repaid its first tranche of FCCBs worth USD 360 million in July 2012. It is understood that the company is now looking to settle another USD 500 million worth FCCBs with the bondholders.

Suzlon has been reporting losses for the past 3 years Suzlon Energy had acquired REpower in 2007 for Rs 8000 crore.

The German subsidiary accounts for nearly 40 percent of Suzlon’s total order book of USD 7.1 billon. Key bankers like SBI had earlier suggested that the company merge REpower with itself to reduce debt.

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Peak power deficit in India rises to 4.2 per cent in December: CEA…

 

Peak power deficit in India rises to 4.2 per cent in December: CEA…

India's peak power shortage increased to 4.2 per cent, or 5,547 MW, in December from a month earlier due to lower hydroelectric and wind power production, according to official data.

Electricity demand in the country last month was 1,32,786 MW, of which 1,27,239 MW was met, data with the Central Electricity Authority (CEA) showed.

The peak power deficit, or shortfall in electricity supply when demand is at the maximum level, was 3.7 per cent, or 4,803 MW, in November, according to the CEA.

"The prime reasons for increased power shortage is decrease in hydel and wind generation and increase in load, mainly in north India, due to winters," a CEA official told PTI.

The northern states of Delhi, Haryana, Uttar Pradesh, Himachal Pradesh and Uttarakhand were the worst affected with a deficit of 7.1 per cent, or 2,912 MW. Electricity demand in the region was 40,812 MW and supply was 37,900 MW.

The northeastern region of Assam, Manipur, Meghalaya, Arunachal Pradesh, Tripura, Nagaland and Mizoram recorded a deficit of 5.9 per cent. The demand for power was 2,009 MW and supply 1,890 MW.

The eastern states were the least affected with a 1.5 per cent peak power shortage. The electricity requirement of states including West Bengal, Odisha, Bihar and Jharkhand in December was 13,814 MW and supply was 13,604 MW.

The western region, which includes Chhattisgarh, Gujarat, Madhya Pradesh, Maharashtra and Goa, reported a power shortage of 1,031 MW, or 2.5 per cent, on demand of 41,335 MW.

The peak power deficit in the south -- Andhra Pradesh, Karnataka, Kerala, Tamil Nadu, Lakshadweep and Puducherry -- was 3.7 per cent, or 1,275 MW, with demand at 34,816 MW.

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January 20, 2014

TPG Growth cuts stake in clean energy producer Greenko Group…

 

TPG Growth cuts stake in clean energy producer Greenko Group…

TPG Growth, an arm of global private equity major TPG, has sold around a quarter of its stake in clean energy producer Greenko Group plc nearly four years after its initial investment.

TPG Growth sold a little over 2 per cent stake over the last six months in London’s AIM-listed Greenko, reducing its holding to 5.96 per cent.

According to VCCircle estimate, the stake has been sold for $6 million to $8.5 million. A large chunk of the stake has been sold earlier this month as Greenko's scrip reached over 170 pence per unit.

In January 2010, TPG Growth led a $116-million round of funding in Greenko Group plc. The PE firm will pick up a little over 10 per cent stake for around $35 million. TPG's remaining stake is worth $26 million, according to Greenko's current trading price.

Shares of Greenko were trading at 178.75 pence, up 2.14 per cent on Monday morning in London.

Greenko Group plc reported a 74.6 per cent increase in operational capacity from 244 MW in March 2013 to 426 MW by end of September 2013.

The company, backed by a slew a private equity funds, reported an 18 per cent increase in revenues to €27.9 million for the six-month period. On a constant currency basis, revenues grew by 32.4 per cent.

Adjusted EBITDA increased 49 per cent to €24.6 million, despite being affected by adverse currency movements and lower generation from biomass assets, said the company. Adjusted profit after tax increased 151 per cent to €10.5 million from €4.2 million during the same period in 2012.

Greenko Group plc raised $150 million or £100 million from GIC

Singapore, one of the world’s largest sovereign wealth funds, last year. Greenko, one of India’s largest independent power producers in the renewable energy space, raised money through its Mauritius arm.

Other investors in Greenko include Aloe Private Equity, Standard Chartered Private Equity, GE Energy Financial Services and Capital Group.

Greenko has a portfolio of wind, run-of-river hydropower, natural gas and biomass assets. The company is now focused on building new utility scale wind farms and hydropower projects across India. Greenko's goal is to reach 1,000 MW of operational capacity in 2015 and approximately 2,000 MW in 2018.

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India, UAE to cooperate for solar, wind energy...

 

India, UAE to cooperate for solar, wind energy...

India and the United Arab Emirates (UAE) have signed an agreement to enhance cooperation in renewable energy, especially in the areas of solar and wind power.

India's Minister of New and Renewable Energy Farooq Abdullah and Sultan Ahmed Al Jaber, minister of state and the UAE's special envoy for energy and climate change, Saturday signed a Memorandum of Understanding (MoU) for cooperation in these areas in Abu Dhabi.

Both the countries also agreed to form a Joint Working Group for better coordination through joint research on subjects of mutual interest, exchange and training of scientific and technical personnel, exchange of available scientific and technologies information and data, according to a statement released here Sunday by the ministry of new and renewable energy.

India and UAE have also agreed to cooperate in organisation of workshops, seminars and working groups, transfer of know-how, technology and equipment, on non-commercial basis.

Abdullah, who is on an official visit to Abu Dhabi, held talks with UAE minister Al Jaber.

Abdullah briefed the UAE minister on the progress made by India in renewable energy with special reference to the National Solar Mission launched in 2010 under the National Action Plan on Climate Change.

He also briefed the minister on India's efforts in promoting energy for remote and un-electrified areas, the statement said.

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January 18, 2014

Renewable Energy Sector in India may miss target 2 years in a row...

 

Renewable Energy Sector in India may miss target 2 years in a row...

The country’s renewable energy sector is likely to miss its capacity addition target for the second year in a row. As against the annual target of 4,325 MW, only 1,922 MW has been achieved during the first nine months of the current fiscal, according to the Ministry of New and Renewable Energy.

However, amid concern over slow progress, the installed capacity for wind power has crossed 20,000 MW this fiscal, while the overall grind-interactive renewable power capacity is set to cross 30,000 MW shortly. With the addition of 1,922 MW in nine months (marginally higher when compared with 1,763 MW in the year-ago period), India’s total grid-interactive renewable energy capacity addition stood at 29,989 MW as on December 31, 2013.

During April-December 2013, wind and solar segments contributed 1096 MW and 495 MW respectively, while the rest was contributed by small hydro, bagasse co-generation, biomass and waste-to-energy categories. Besides, 67 mw of off-grid/ captive power generation capacity from different renewable energy sources were also added during the period.

Presently, wind makes up 67 per cent of India’s total installed capacity of green power. Of the total cumulative capacity of 29,989 MW, wind sector contributed 20,149 MW, followed by small hydro power at 3,763 MW, bagasse cogeneration power at 2,513 MW, solar at 2,180 MW, biomass at 1,285 MW, and waste-to-energy at 99 MW. The cumulative off-grid/ captive power generation capacity from different renewable energy sources in the country stood at 945 MW by the end of December 2013.

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January 15, 2014

Micro-windmills could power your cellphone…

 

Micro-windmills could power your cellphone…

Researchers at the University of Texas at Arlington have designed a micro-windmill that generates wind energy and may become an innovative solution to cell phone batteries constantly in need of recharging and home energy generation where large windmills are not preferred.
 
Smitha Rao and J C Chiao designed and built the device that is about 1.8 mm at its widest point. A single grain of rice could hold about 10 of these tiny windmills. Hundreds of the windmills could be embedded in a sleeve for a cellphone.

Wind, created by waving the cellphone in air or holding it up to an open window on a windy day, would generate the electricity that could be collected by the cellphone’s battery.

Rao’s designs blend origami concepts into conventional wafer-scale semiconductor device layouts so complex 3-D moveable mechanical structures can be self-assembled from two-dimensional metal pieces utilising planar multilayer electroplating techniques that have been optimized by WinMEMS Technologies Co., the Taiwanese fabrication foundry that took an initial interest in Rao’s work.

“The micro-windmills work well because the metal alloy is flexible and Smitha’s design follows minimalism for functionality.” Chiao said. These inventions are essential to build micro-robots that can be used as surgical tools, sensing machines to explore disaster zones or manufacturing tools to assemble micro-machines.
 
The micro windmills were tested successfully in September 2013 in Chiao’s lab. The windmills operate under strong artificial winds without any fracture in the material because of the durable nickel alloy and smart aerodynamic design.

“The problem most designers have is that materials are too brittle,” Rao said. “With the nickel alloy, we don’t have that same issue. They’re very, very durable.” The micro-windmills can be made in an array using the batch processes.
 
The fabrication cost of making one device is the same as making hundreds or thousands on a single wafer, which enables for mass production of very inexpensive systems.

“Imagine that they can be cheaply made on the surfaces of portable electronics,” Chiao said, “so you can place them on a sleeve for your smart phone.

When the phone is out of battery power, all you need to do is to put on the sleeve, wave the phone in the air for a few minutes and you can use the phone again.”

Chiao said because of the small sizes, flat panels with thousand of windmills could be made and mounted on the walls of houses or building to harvest energy for lighting, security or environmental sensing and wireless communication.

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