Monday 19 May 2014

Modi Needs To Reform Electricity To Power India Recovery


  • Narendra Modi's crushing election win has given rise to hopes for an economic revival in India, but much will depend on whether he can replicate the electricity success of his home state.
  • India's financial markets have been buoyed by Modi's victory, betting that the Hindu nationalist politician can work the same economic wonders for the whole country that he did while running the western state of Gujarat for 13 years.
  • The alliance led by Modi's Bharatiya Janata Party (BJP) won 336 of the 543 seats in India's lower house of parliament when election results were announced last week, giving India a majority government for the first time in a quarter of a century.
  • While Modi's authority will be bolstered by the massive win and his legislative programme will be easier to implement given he doesn't need to negotiate with coalition partners, the scale of the challenge facing him is enormous.
  • India is structurally short of electricity, and it's hard to see how the economy can be ramped up significantly, especially in power-hungry sectors such as manufacturing, without the provision of reliable power at prices high enough to ensure sustainable supply, but not so high as to choke growth.
  • One of Modi's key accomplishments in Gujurat is said to be his reform of the power sector, making the state the only one with a consistent power surplus.
  • What Modi's government did in Gujarat was less to do with building new power plants and more to do with reforming how electricity was distributed and paid for.
  • His government re-negotiated purchase agreements with private power companies, set up a police unit to stop thieving of electricity and ended unmetered supplies to rural areas.
  • What Modi didn't do was have the state build more power plants, rather its share of generation has gone down while that of the private sector has gone up.
  • Modi's accomplishment in Gujarat was to improve the reliability of supply at the cost of higher prices, a bargain that has apparently been successful.
  • Whether this formula can be replicated across India is very much open to debate, given that the central government has limited authority over state electricity boards.
  • Politicians at state level have for years used power as a populist football, regulating for cheap electricity that has meant losses for both private and public generators and distributors.
  • A recent example of the chaos afflicting India's electricity sector is the Supreme Court's intervention to order state-run power producer NTPC Ltd to supply distribution companies in the capital New Delhi in order to prevent blackouts.
  • The distributors claim that low tariffs mean they can't afford to pay the generator, while the government of Delhi has threatened to cancel the distributors' licences and examine their finances.
  • In some ways it doesn't matter who is right or wrong in the Delhi power dispute, what matters is that any company contemplating investing in the region would have serious concerns about the reliability of electricity supply.
  • Sorting out the disconnect between retail prices and the actual cost of producing and distributing electricity is also just the tip of the iceberg in ensuring sufficient power for economic growth.

RELIANCE ON COAL
  • India is reliant on coal for electricity, with the fuel providing about 70 percent of total generation.
  • Given its cost advantage over other fossil fuels such as natural gas and its abundance, it makes sense that India is looking to coal to power its future.
  • The defeated government's 12th five-year plan anticipated that about 76 gigawatts (GW) of new power will be added by 2016-17, with about 63 GW being coal-fired.
  • Assuming this capacity is actually added, it would take total coal-fired generation to around 175 GW, which would require about 842 million tonnes of coal a year.
  • In addition to coal for power generation, India has optimistic plans to expand steel output, which could potentially use as much as 300 million tonnes of coking coal by 2016-17, taking the total coal need to around 1.1 billion tonnes.
  • Even if these demand forecasts prove too optimistic, the problem is that there is little chance that India could get close to meeting its coal requirement from domestic resources, meaning imports will have to increase, putting pressure on the current account deficit.
  • Domestic coal output was about 587 million tonnes for the fiscal year ended in March, and imports were about 158.8 million tonnes.
  • Coal India, the state-controlled behemoth that produces about 80 percent of the nation's output, says it can increase output by 300 million tonnes a year, if Indian Railways moved faster in building new tracks.
  • Given Coal India has consistently disappointed on output growth, its claims have to be treated with caution, but they do highlight the main issue for coal availability in India.
  • There is ample domestic coal, but it can't be moved around the country due to major bottlenecks on the rail system.
  • Building new mines and railways requires investors jump through multiple bureaucratic hoops, and it's in this area that Modi's new government may be able to speed things up.
  • But in the short term it appears likely that coal imports will have to rise if the new government wants to improve the availability and reliability of electricity.
  • Power prices to consumers will also have increase in order to pay for imported coal and improvements to distribution systems. 

Friday 16 May 2014

TRANSMISSION TOWER

Transmission tower


A transmission tower

  •   The main supporting unit of overhead transmission line is transmission tower.
  •  Transmission towers have to carry the heavy transmission conductor at a sufficient safe height from ground. In addition to that all towers have to sustain all kinds of natural calamities. 
  • So transmission tower designing is an important engineering job where all three basic engineering concepts, civil, mechanical and electrical engineering concepts are equally applicable.

The main parts among transmission tower are shown in the pictures:

Peak of Transmission Tower

The portion above the top cross arm is called peak of transmission tower. Generally earth shield wire connected to the tip of this peak.

Cross Arm of Transmission Tower

Cross arms of transmission tower hold the transmission conductor. The dimension of cross arm depends on the level of transmission voltage, configuration and minimum forming angle for stress distribution.

Cage of Transmission Tower

The portion between tower body and peak is known as cage of transmission tower. This portion of the tower holds the cross arms.


transmission tower
cross arms of transmission tower





















Transmission Tower Body

The portion from bottom cross arms up to the ground level is called transmission tower body. 
This portion of the tower plays a vital role for maintaining required ground clearance of the bottom conductor of the transmission line.


Design Of Transmission Tower:


design of transmission tower
  • During design of transmission tower the following points to be considered in mind,


  a) The minimum ground clearance of      the lowest conductor point above the    ground level.
b) The length of the insulator string.
c) The minimum clearance to be maintained between conductors and between conductor and tower.
d) The location of ground wire with respect to outer most conductors.
e) The mid span clearance required from considerations of the dynamic behavior of conductor and lightening protection of the line.
To determine the actual transmission tower height by considering the above points, we have divided the total height of tower in four parts,
1. Minimum permissible ground clearance (H1)
2. Maximum sag of the conductor (H2)
3. Vertical spacing between top and bottom conductors (H3)
4. Vertical clearance between ground wire and top conductor (H4).

Types of Transmission Tower

  • According to different considerations, there are different types of transmission towers.
  • The transmission line goes as per available corridors. Due to unavailability of shortest distance straight corridor transmission line has to deviate from its straight way when obstruction comes. In total length of a long transmission line there may be several deviation points.
  • According to the angle of deviation there are four types of transmission tower-


     1. A – type tower – angle of deviation 0o to 2o.
    2. B – type tower – angle of deviation 2o to 15o.
   3. C – type tower – angle of deviation 15o to 30o.
  4. D – type tower – angle of deviation 30o to 60o.
  • As per the force applied by the conductor on the cross arms, the transmission towers can be categorized in another way-


      1. Tangent suspension tower and it is generally A - type tower.
   2. Angle tower or tension tower or sometime it is called section tower. All B, C and D types of transmission towers come under this category.
  • Apart from the above customized type of tower, the tower is designed to meet special usages listed below,
transmission tower
These are called special type tower
1. River crossing tower
2. Railway/ Highway crossing tower
3. Transposition tower
  • Based on numbers of circuits carried by a transmission tower, it can be classisfied as-
       1. Single circuit tower
      2. Double circuit tower
    3. Multi circuit tower.




  

Wednesday 7 May 2014

ENERGY SCENARIO OF THE WORLD (PART-2)

COAL:



  • Despite its poor environmental credentials, coal remains a crucial contributor to energy supply in many countries. 
  • Coal is the most wide-spread fossil fuel around the world, and more than 75 countries have coal deposits. The current share of coal in global power generation is over 40%, but it is expected to decrease in the coming years, while the actual coal consumption in absolute terms will grow. 
  • Although countries in Europe, and to some extent North America, are trying to shift their consumption to alternative sources of energy, any reductions are more than offset by the large developing economies, primarily in Asia, which are powered by coal and have significant coal reserves.
  •  China alone now uses as much coal as the rest of the world.   The continuing popularity of coal becomes particularly obvious when compared to the current production figures with those from 20 years ago.
  •  While the global reserves of coal have decreased by 14% between 1993 and 2011, the production has gone up by 68% over the same time period. Compared to the 2010 survey, the most recent data shows that the proved coal reserves have increased by 1% and production by 16%. The future of coal depends primarily on the advance of clean coal technologies to mitigate environmental risk factors.
  •  Today Carbon Capture Utilisation and Storage (CCS/CCUS) is the only large-scale technology which could make a significant impact on the emissions from fossil fuels. It is, however, still at the pilot stage and its future is uncertain, mainly because of the high costs and efficiency penalty.  
  • Coal is playing an important role in delivering energy access, because it is widely available, safe, reliable and relatively low cost.
  •  One of the major challenges facing the world at present is that approximately 1.2 billion people live without any access to modern energy services. Access to energy is a fundamental pre-requisite for modern life and a key tool in eradicating extreme poverty across the globe.  
  • Coal resources exist in many developing countries, and this report demonstrates that many countries with electricity challenges, particularly those in Asia and southern Africa, are able to access coal resources in an affordable and secure way to fuel the growth in their electricity supply. Coal will therefore play a major role in supporting the development of base-load electricity where it is most needed. Coal-fired electricity will be fed into national grids and it will bring energy access to millions, thus facilitating economic growth in the developing world.   
  • Coal reserve(top 5 countries):                                                           ref.(World Energy Council 2013 World Energy Resources: A Summary) 
     1-United States of America
     2-Russian Federation
     3-China
     4-Australia
     5-India

Sunday 4 May 2014

ENERGY SCENARIO OF THE WORLD (PART-1)


  • The world around us has changed significantly over the past 20 years. Technology has become one of the main drivers of economic and social development.
  •  The rapid advancement of Information Technology (IT) all over the world has transformed not only the way we think, but also the way we act. All aspects of human life have been affected by IT and the Internet, in particular. 
  • Needless to say that practically all technologies run on electricity and therefore the share of electricity is increasing rapidly, faster than Total Primary Energy Supply (TPES). 
  • Population growth has always been and will remain one of the key drivers of energy demand, along with economic and social development. While global population has increased by over 1.5 billion over the past two decades, the overall rate of population growth has been slowing down. The number of people without access to commercial energy has reduced slightly, and the latest estimate from the World Bank indicates that it is 1.2 billion people. 
  • The only renewable energy resources for which projections were made in 1993 were hydro power and biomass. The contribution of renewables was not very significant in those days, and the rest of the renewables were not taken into consideration individually, but combined into one group called Other Renewables. For comparability, the same resources are included under this heading for 2011. They are however, presented separately in the full World Energy Resources 2013 report. 



Saturday 3 May 2014

INDIA'S POWER PLANTS ATTRACTING FOREIGN BUYERS

  • Indian power assets are attracting foreign buyers keen to invest in a sector that is unable to meet demand, even as the owners of those assets struggle with debt and impediments to growth.        
  • A consortium led by Abu Dhabi National Energy Co. of the United Arab Emirates, for example, is in the final stages of talks with Jaypee Group, an Indian construction and power company, to buy two of its hydroelectric projects in the north Indian state of Himachal Pradesh for up to $2 billion, two people familiar with the talks said last week.                                   
  • Recent deals include the purchase by Singapore's SembCorp Industries Ltd.U96.SG -0.19% early this month of a 45% stake in a power project jointly owned by NCC Infrastructure and Gayatri Energy Ventures for 175 million Singapore dollars (US$139 million). Tang Kin Fei, group president and chief executive of SembCorp Industries, at the time said expanding the company's India foothold will provide opportunities "to grow significantly in years to come."                                             
  • In December, French energy company GDF Suez SA GSZ.FR +2.04% bought a 74% stake in a coal-fired power plant in south India owned by Meenakshi Energy & Infrastructure Holdings Pvt. Ltd. GDF Suez said the deal was part of its strategy of investing in fast-growing markets.                    
  • Foreign buyers are entering a market where domestic companies have faced an acute shortage of coal—which fuels more than half of the country's power generation—and excruciatingly slow approvals for everything from land acquisition to environmental clearance. This has led to chronic power shortages that have hampered India's economy and left around a quarter of the country's people without electricity.

  • Meanwhile, power companies' debts—partly the result of low tariffs set by states that are reluctant to raise them—are piling up and many are looking to sell assets on the cheap.                    
  • "Someone's loss is another's gain," said Hari Das Khunteta, chairman of Mumbai-based financial-services firm Altius Finserv Pvt. Ltd., explaining foreign interest in the nation's power assets. "This is a good time for overseas companies to buy into operational or under-construction plants," and doing so enables the investors to avoid the long, often painstaking early phases of acquiring land and gaining the necessary government approvals.                                                                                      
  • In fact, many of the assets that are attracting buyers are losing money. Yet the sector has tremendous growth potential. Around 25% of India's population still lacks access to electricity, according to the World Bank, and the nation's Ministry of Power says the country suffers from a supply deficit of around 8%-10% during peak hours.                              
  • India plans to expand its power-generating capacity by 44% through March 2017, which would require an estimated 13 trillion rupees ($210 billion) in investment. Yet as of October around $115 billion of such investment is stalled due to delays in the necessary clearances, according to the government.           
  • The government in recent months has taken steps to speed up approval of some new plants under construction, but analysts say it could be years before these steps yield electricity.                    
  •  Meanwhile, company debt remains. Lanco Infratech Ltd. 532778.BY 0.00% , a Gurgaon-based construction and power company, has said it is eager to sell some of its power and road assets to cut its debt, which stands at around $5.7 billion. This month it sold one of its hydroelectric projects in northern Himachal Pradesh state to Greenko GroupGKO.LN -0.54% PLC, an Indian power company listed in London, for €77 million ($106 million).

Thursday 1 May 2014

THE ELECTRICITY ACT,2003



  • The Electricity Act, 2003 is legislation in India that aims to transform the power sector in India.
  • The act covers major issues involving generation, distribution, transmission and trading in power. While some of the sections have already been enacted and are yielding benefits, there are a few other sections that are yet to be fully enforced till date.

BACKGROUND:


  • Before Electricity Act, 2003, the Indian electricity sector was guided by The Indian Electricity Act, 1910 and The Electricity (Supply) Act, 1948.
  •  The generation, distribution and transmission were carried out mainly by the State Electricity Boards in various States.
  •  Due to politico-economic situation, the cross-subsidies reached at an unsustainable level. For the purpose of distancing state governments form tariff determination, The Electricity Regulatory Commissions Act was enacted in 1998.
  •  So as to reform electricity sector further by participation of private sector and to bring in competition, Electricity Act was enacted in 2003.

The main features of the Act are as follows:
1. Generation has been delicensed and captive generation freely permitted, i.e. any generating company may establish, operate and maintain a generating station without obtaining a licence under this Act with the only exception that it should comply with the technical standards relating to connectivity with the grid referred to in clause (b) of section 73.
Note: Hydro-projects, however, need concurrence from the Central Electricity Authority.
2. No person shall
(a)transmit electricity; or
(b)distribute electricity; or
(c)undertake trading in electricity,
unless he is authorised to do so by a licence issued, exceptions are informed by authorised commissions through notifications.
3. Central Government may, make region-wise demarcation of the country, and, from time to time, make such modifications therein as it may consider necessary for the efficient, economical and integrated transmission and supply of electricity, and in particular to facilitate voluntary inter-connections and co-ordination of facilities for the inter-State, regional and inter-regional generation and transmission of electricity.
Transmission utility at the central and state level to be a government company with responsibility of planned and coordinated development of transmission network.
4. Open access in transmission with provision for surcharge for taking care of current level of cross-subsidy, with the surcharge being gradually phased out.
5. The state governments are required to unbundle State Electricity Boards. However they may continue with them as distribution licensees and state transmission utilities.
6. Setting up State Electricity Regulatory Commission (SERC) has been made mandatory.
7. An appellate tribunal to hear appeals against the decision of (CERC's) and SERC's.
8. Metering of electricity supplied made mandatory.
9. Provisions related to thefts of electricity made more stringent.
10. Trading as a distinct activity recognised with the safeguard of Regulatory commissions being authorised to fix ceiling on trading margins.
11. For rural and remote areas, stand-alone system for generation and distribution is permitted.
12. Thrust to complete rural electrification and provide for management of rural distribution by panchayat, cooperative societies, NGOs, franchisees etc.
13. Central government to prepare National Electricity Policy and Tariff Policy.
14. Central Electricity Authority (CEA) to prepare National Electricity Plan.