shem renewable energy resources
TRANSCRIPT
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Renewable Energy Resources
What are renewable resources?
Renewable resources are the natural resources with their ability that once used they can be replaced by some
natural process within a certain period of time. They constitute our natural environment and form our ecosystem.
Any natural resource can qualify as a renewable resource if its quantity can be increased over a period of time.
Types of renewable resources:
1. Solar power: It is the technology used to obtain solar energy in the form of light. Solar energy is used invarious applications such as heat (geysers, cooking), generation of electricity, desalination of sea water.
2. Wind power: It is the conversion of wind energy into more useful forms. Most of the wind power isgenerated in the form of electricity by converting the rotation of turbine blades into electrical current by
means of an electrical generator.
3. Hydropower: It is the energy conversion of moving water in other useful forms. It is used in various areassuch as irrigation, sawmills but the most important is generation of electricity as its a very cheap process.
4. Biomass: It is a biological material from living organisms. It is carbon, hydrogen and oxygen based.Biomass energy is derived from five distinct energy sources: garbage, wood, waste, landfill gases, and
alcohol fuels. It can be used to generate electricity and make industrial products such as fibre or industrial
chemical such as biofuel.
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Solar power Solar Land Area
Resources used by different countries Wind farm
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What is the need of renewable resources?
In todays world the major sources of energy are non renewable resources of energy. These are
polluting, and being depleted at a very fast rate these days. The following shows the usage of non
renewable resources by the most developed country in the world.
Reasons behind the need of renewable resources
1. Industrial revolution: The 20th century saw a rapid twentyfold increase in the use of fossil fuels-firstcoal, then oil and gas. Many new products are launched and used. Due to the excessive use of energy
produced by fossil fuels they are depleting at a very faster rate. According to the U.S energy
information administrations breakdown of total energy consumption of 2004, fossil fuels supplied 86
percent of the worlds energy.
2. Global population: The population is increased over a period of time and analytically it will go up infuture. The reason behind this is that death rates are controlled massively by new technologies in
medication. Then more population will need energy resources which cannot be satisfied using current
resources.
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3. Environment degradation: Excessive use of coal, petroleum and natural gases are degrading ourenvironment. It is polluting the environment giving rise to new diseases which can be very harmful.
Humans are pouring carbon dioxide into the atmosphere much faster than plants.
4. Global Warming: Burning of fossil fuels creates another problem known as Global Warming. Someexamples of global warming are as follows:
a) According to NASA, average temperature has climbed by 1.4 degrees Fahrenheit since 1880.b) The rate of warming is increasing and the last 2 decades of twentieth century are considered to be
hottest.
c) Arctic ice is rapidly disappearing and the region may have its first ice free summer by 2040 or earlier.Polar bears and other indigenous cultures are already suffering from ice loss.
d) Glaciers and mountain snows are rapidly melting. For example, Montanas glacier National park nowhas only 27 glaciers versus 150 in 1910.
5. Price rise of resources: Due to the excessive use of fossil fuels their price is increasing rapidly.According to the Hotelling Rule, quoting from Khanna
In a competitive market where there are a large number of sellers, and each seller can sell
any quantity at the going market price, each resource owner would be faced with the same options
and would follow the same logic. The result is that in this market the quantity extracted will be such
that resource price will rise at exactly [the interest rate] r per cent per year.... If it were to rise slower,
resource owners would begin to sell off current stocks and the current market price would fall. If the
resource price were to increase at a rate faster than r per cent per year, all owners of the resource
would hold on to their stock, decreasing the current supply in the market, thereby inducing the current
market price to rise. The equilibrium price trajectory for a non-renewable resource would, therefore,
be rising exponentially as shown in Figure.
KYOTO PROTOCOL
The Kyoto Protocol is an international agreement linked to the United Nations Framework Convention on
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average of five per cent against 1990 levels over the five-year period 2008-2012.
The major distinction between the Protocol and the Convention is that while the Convention encouraged
industrialized countries to stabilize GHG emissions, the Protocol commits them to do so.
Recognizing that developed countries are principally responsible for the current high levels of GHG
emissions in the atmosphere as a result of more than 150 years of industrial activity, the Protocol places a
heavier burden on developed nations under the principle of common but differentiated responsibilities.
The major distinction between the Protocol and the Convention is that while the Convention encouraged
industrialized countries to stabilize GHG emissions, the Protocol commits them to do so.
Under the Protocol, countries actual emissions have to be monitored and precise records have to be kept of
the trades carried out.
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Under the Treaty, countries must meet their targets primarily through national measures. However, the Kyoto
Protocol offers them an additional means of meeting their targets by way of three market-based mechanisms.
The Kyoto mechanisms are:
Emissions tradingknown as the carbon market"Emissions trading, as set out in Article 17 of the Kyoto Protocol, allows countries that have emission units
to spare - emissions permitted them but not "used" - to sell this excess capacity to countries that are over
their targets. Clean development mechanism (CDM) Joint implementation (JI).
The mechanism known as joint implementation, defined in Article 6 of the Kyoto Protocol, allows a
country with an emission reduction or limitation commitment under the Kyoto Protocol (Annex B Party)
to earn emission reduction units (ERUs) from an emission-reduction or emission removal project in
another Annex B Party, each equivalent to one tonne of CO2, which can be counted towards meeting its
Kyoto target.
The mechanisms help stimulate green investment and help Parties meet their emission targets in a cost-effective
way.
Clean Development Mechanism
The Clean Development Mechanism (CDM), provided for under Article 12 of the Kyoto Protocol, enables
developing countries to participate in joint greenhouse gas (GHG) mitigation projects. Under this Protocol, Annex
I countries (developed countries and economies in transition) are required to reduce GHG emissions to below
their 1990 levels.
The CDM enables these countries to meet their reduction commitments in a flexible and cost-effective manner. It
allows public or private sector entities in Annex I countries to invest in GHG mitigation projects in developing
countries. In return the investing parties receive credits or certified emission reductions (CERs) which they can use
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While investors profit from CDM projects by obtaining reductions at costs lower than in their own countries, the
gains to the developing country host parties are in the form of finance, technology, and sustainable developmentbenefits.
The basic rules for the functioning of the CDM were agreed on at the seventh Conference of Parties (COP-7) to the
UNFCCC held in Marrakesh, Morocco in October-November 2001. Projects starting in the year 2000 are eligible to
earn CERs if they lead to "real, measurable, and long-term" GHG reductions, which are additional to any that
would occur in the absence of the CDM project. This includes afforestation and reforestation projects, which lead
to the sequestration of carbon dioxide.
At COP-7, it was decided that the following types of projects would qualify for fast-track approval procedures:
Renewable energy projects with output capacity up to 15 MWEnergy efficiency improvement projects which reduce energy consumption on the supply and/or demand side
by up to 15 GWh annually
Other project activities that both reduce emissions by sources and directly emit less than 15 kt CO2 equivalent
annually.
The CDM will be supervised by an executive board, and a share of the proceeds from project activities will be used
to assist developing countries in meeting the costs of adaptation to climate change.
INDIA AND UNFCCCIndia signed the UNFCCC on 10 June 1992 and ratified it on 1 November 1993. Under the UNFCCC, developing
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The Ministry of Environment and Forests is the nodal agency for climate change issues in India. It has constituted
Working Groups on the UNFCCC and Kyoto Protocol. Work is currently in progress on India's initial National
Communication (NATCOM) to the UNFCCC.
The Kyoto Protocol to the UNFCCC was adopted in 1997 and requires developed countries and economies in
transition listed in Annex B of the Protocol, to reduce their GHG emissions by an average of 5.2% below 1990
levels. Article 12 of the Kyoto Protocol provides for the Clean Development Mechanism (CDM).
India acceded to the Kyoto Protocol on 26 August 2002.
The following are key elements of the Indian stand on the CDM :-
1. The use of flexible mechanisms to meet commitments should be supplemental to domestic effort and an upper
limit to their use should be defined.
2. Sinks should not be included in the CDM.
3. Criteria for CDM projects
a) Host country to be sole judge of the national sustainable development criteria.
b) The project activity shall promote transfer of technology.
c) Capacity building should be incorporated in all CDM projects.
d) Baselines will be defined on a project-to-project basis.
e) Funding for project activity shall be additional to ODA (official development assistance), GEF (global
environment facility), and other financial commitments of developed country Parties.
4. The share of proceeds from certified project activities shall be a stipulated percentage of the differentials ofthe costs incurred by the developed country party in reducing GHG through a project activity in a developing
country and of the project costs that would have been incurred had the GHG reduction activity taken place in the
developed country funding the project.
5. The terms and conditions for sharing CERs (certified emissions reductions) and funding will be mutually agreed
upon by the developed and developing country Parties.
6. The operational entities to certify emission reductions shall be designated by the COP/MOP (conference of
parties to the Convention serving as the meeting of parties to the Protocol).
7. A national system of monitoring, verifying and reporting under the CDM shall be established.
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INDIAs INITIATIVES
Renewable energy sector growth in India during the last four years has been significant, even for electricity
generation from renewable sources. The grid connected systems with installed capacities in the MW range
indicate a growth of 96% for wind power, 26% in small hydro, 234% for biomass/co-generation power and 200%
for solar photovoltaic power. Even for the decentralized systems, the growth for solar home lighting systems has
been 300%, solar lanterns 99% and solar photovoltaic water pumps 196%. This is a phenomenal growth in the
renewable energy sector mainly for applications that were considered to be supplied only through majorelectricity utilities.
Renewable energy systems are also being looked upon as a major application for electrification of 20,000 remote
and unelectrified villages and hamlets by 2007 and all households in such villages and hamlets by 2012.
India has undertaken numerous response measures that are contributing to the objectives of the United Nations
Framework Convention on Climate Change (UNFCCC). India's development plans balance economic development
and environmental concerns. The planning process is guided by the principles of sustainable development.
Reforms in the energy and power sector have accelerated economic growth and enhance the efficiency of energy
use. These have been complemented by notable initiatives taken by the private sector.
PROJECTS
The section features a compilation of Activities Implemented Jointly (AIJ) and climate change related Global
Environment Facility (GEF) projects in India. For each AIJ project, information is provided on project name, type,
investor, project details and contact information.
For each GEF project, information is provided on project name, implementing agency, project details, and contact
information.
AIJ projects
GEF projects
AIJ projects
The UNFCCC allows Annex I Parties to implement policies and measures jointly with other Parties to help them
stabilize their emissions at 1990 levels. At the first COP, a 'pilot phase of activities implemented jointly' (AIJ) waslaunched, under which, Parties may implement projects on a voluntary basis that reduce greenhouse gas
emissions, or enhance removals of greenhouse gases by 'sinks', in addition to what would have occurred
otherwise, in the territories of other Parties. However, no credits may accrue to any Party for such reductions or
removals. The pilot phase is intended to build experience through 'learning by doing', for example in establishing
baselines and estimating the environmental benefits of the project.
DESI Power: biomass gasification
Hybrid renewable energy project in Rajasthan
Integrated Agricultural Demand Side Management with the Andhra Pradesh Electricity Board
GEF projects
The Global Environment Facility (GEF) helps developing countries fund sustainable development projects that alsoprotect the global environment. Established in 1991, GEF focuses on six planet-wide concerns: biodiversity loss,
climate change, international waters, ozone layer depletion, land degradation, and persistent organic
pollutants. GEF brings together 166 member governments, leading development institutions, the scientific
community, and a wide spectrum of private sector and non-governmental organizations on behalf of a common
global environmental agenda.
Alternate energy
Biomass energy for rural India
Coal-bed methane recovery and commercial utilization
Development of high-rate biomethanation processes as means of reducing GHG emissions
Enabling Activities for the Preparation of India's Initial National Communication to the UNFCCC
Energy efficiencyFuel cell bus development in India
Optimizing development of small hydel resources in hilly regions
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Sources of renewable energy available in India: What renewable energies are in the Indian market?
S.No. Programmes Potential Utilization
As on 12.10.99 As on 12.10.03 Growth during
the last four
years (%)
A. GRID CONNECTED SYSTEMS
1 Wind Power (in MW) 45,000 1022 2002 96
2 Small Hydro Power (in MW) 15,000 1218 1530 26
3 Biomass/Cogeneration Power (in MW) 19,500 171 571 234
4
Urban and Industrial Waste Power (in
MW) 2,500 2 26 1200
5 Solar Photovoltaic Power (in MW) 20 1 3 200
TOTAL 2414 4132 71
B. DECENTRALIZED SYSTEMS
6 Biogas Plants (Nos. in million) 12.0 2.88 3.55 24
7Community/Institutional/Night-Soilbased 120 2,673 3,902 46
Biogas Plants (Nos)
8 Improved wood stoves (Nos in million) 25 35 40
9 Solar Home Lighting Systems (Nos.) 64,000 2,60,000 300
10 Solar Street Lighting Systems (Nos.) 32,920 43,470 32
11 Solar Lanterns (Nos. in million) 2,.22,000 4,42.000 99
12 SPV Pumps (Nos.) 2,160 6,400 196
13 Solar Water Heating Systems 140 0.57 0.7 22
(lakh sq meter collector area)
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a) Hydro power
In India, small hydro is the most utilized renewable energy source for energy production. Some
key figures concerning small hydro in India:
It takes less than 25 MW in the small hydro designation There is a potential of 15,000 MW Installed is 1,520 MW to date 4,096 potential sites have been identified
b) Wind Energy
India is surpassed only by Germany as one of the world's fastest growing markets for wind
energy. By the mid 1990s, the subcontinent was installing more wind generating capacity than
North America, Denmark, Britain, and the Netherlands.
The ten machines near Okha in the province of Gujarat were some of the first wind turbines
installed in India. These 15-meter Vestas wind turbines overlook the Arabian Sea. Now, in 2006,
there is an installed capacity of 4,430 MW; however, ten times that potential, or 46,092 MW,
exists. (see page 12)
Wind Energy in India
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c) Solar energy
Photovoltaic systems based on solar energy have been put to a variety of uses in ruralelectrification, railway signalling, microwave repeaters, power to border outposts and TV
transmission and reception.
Grid-connected PV power plants with an aggregate capacity of 1900 kWp have been set upfor demand-side management or tail-end voltage support.
A 140 MW integrated solar combined cycle (ISCC) plant is being set up based on solarthermal technology and liquified natural gas.
Solar lanterns, home- and street-lighting systems, stand-alone power plants, and pumpingsystems are being promoted. So far, 9,20,000 SPV systems with an aggregate capacity of 82
MWp have been installed in the country.
d) Biomass energy
India is very rich in biomass. It has a potential of 19,500 MW (3,500 MW from bagasse-based
cogeneration and 16,000 MW from surplus biomass). Currently, India has 537 MW commissioned and
536 MW under construction. The facts reinforce the idea of a commitment by India to develop these
resources of power production.
The potential available and the installed capacities for Biomass and Bagasse
Source Potential Installed
Biomass 16,000 MW 222 MW
Bagasse (Co-
generation) in existing3,500 MW 332 MW
sugar mills
The position of India in the world potential renewable energy
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Major Achievements of India
Indias major achievements renewable energy development can be summarized as follows:
Over 4200 MW grid power from wind, small hydro, biomass and solar energy.
7 lakh sq.meter collector area solar water heating systems installed. Largest solarsteam cooking system for 15,000 persons/day set up at Tirupati Tirumala
Devasthanam.
3.5 million biogas plants installed for cooking and lighting applications.
35 million improved wood stoves in rural homes.
Integrated Rural Energy Programme Implemented in 860 blocks
Demonstration of the use of ethanol, bio-diesel and hydrogen for vehicles and stationary applications.
Zero emission vehicles including two, three and four wheelers and passenger buses being promoted
under research and development and demonstration programmes.
Fuel cell vehicle developed and demonstrated for the first time outside the USA, the European Union
and Japan.
Bangalore declared solar thermal city with Thane in Mumbai to follow soon.
30 MW capacity Solar Photovoltaic products exported to various developed and developing countries. Constitution of Hydrogen Energy Board for drawing up and implementing the National Hydrogen
Energy Roadmap.
280 Energy Parks set-up in educational institutions for demonstration of renewable energy systems
and devices
Rs.25,000 million direct subsidy given so far to beneficiaries/users of renewable energy systems and
devices, including subsidy for grid connected renewable power projects.
Rs. 32,000 million loan provided so far by Indian Renewable Energy Development Agency Limited for
1600 renewable energy project.
What is Energy efficiency?
Efficient energy use, sometimes simply called energy efficiency, is the goal of efforts to reduce the
amount of energy required to provide products and services. For example, insulating a home allows a
building to use less heating and cooling energy to achieve and maintain a comfortable temperature.
Installing fluorescent lights or natural skylights reduces the amount of energy required to attain the
same level of illumination compared to using traditional incandescent light bulbs. Compact fluorescent
lights use two-thirds less energy and may last 6 to 10 times longer than incandescent lights.
Improvements in energy efficiency are most often achieved by adopting a more efficient technology or
production process.
Why do we need to improve Energy Efficiency?
There are various motivations to improve energy efficiency. Reducing energy use reduces energy costs
and may result in a financial cost saving to consumers if the energy savings offset any additional costs of
implementing an energy efficient technology. Reducing energy use is also seen as a key solution to the
problem of reducing emissions. According to the International Energy Agency, improved energy
efficiency in buildings, industrial processes and transportation could reduce the world's energy needs in
2050 by one third, and help control global emissions of greenhouse gases.
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Energy efficiency and renewable energy are said to be the twin pillars of sustainable energy policy. In
many countries energy efficiency is also seen to have a national security benefit because it can be used
to reduce the level of energy imports from foreign countries and may slow down the rate at which
domestic energy resources are depleted.
Making homes, vehicles, and businesses more energy efficient is seen as a largely untapped solution to
addressing the problems of pollution, global warming, energy security, and fossil fuel depletion. Many of
these ideas have been discussed for years, since the 1973 oil crisis brought energy issues to the
forefront. In the late 1970s, physicist Amory Lovins popularized the notion of a "soft energy path", with
a strong focus on energy efficiency. Among other things, Lovins popularized the notion of megawatts
the idea of meeting energy needs by increasing efficiency instead of increasing energy production.
Energy efficiency has proved to be a cost-effective strategy for building economies without necessarily
growing energy consumption. For example, the state of California began implementing energy-efficiency
measures in the mid-1970s, including building code and appliance standards with strict efficiency
requirements. During the following years, California's energy consumption has remained approximately
flat on a per capita basis while national U.S. consumption doubled. As part of its strategy, California
implemented a "loading order" for new energy resources that puts energy efficiency first, renewable
electricity supplies second, and new fossil-fired power plants last.
The impact of energy efficiency on peak demand depends on when the appliance is used. For example,an air conditioner uses more energy during the afternoon when it is hot. Therefore, an energy efficient
air conditioner will have a larger impact on peak demand than off-peak demand. An energy efficient
dishwasher, on the other hand, uses more energy during the late evening when people do their dishes.
This appliance may have little to no impact on peak demand.
Which are the concerned fields and what consequence does energy efficiency
have on them?
1) BUILDING DESIGN
Effective energy-efficient building design can include the use of low cost Passive Infra Reds (PIRs) to
switch-off lighting when areas are unoccupied such as toilets, corridors or even office areas out-of-
hours. In addition, lux levels can be monitored using daylight sensors linked to the building's lighting
scheme to switch on/off or dim the lighting to pre-defined levels to take into account the natural light
and thus reduce consumption. Building Management Systems (BMS) link all of this together in one
centralised computer to control the whole building's lighting and power requirements.
- Energy Efficiency in Government Buildings
Bureau of Energy Efficiency has undertaken Energy audit studies in 8 Government buildings to set up anexample for private buildings to pursue similar efforts. The buildings included - Rashtrapati Bhawan,
Prime Ministers Office and Defence Ministry blocks in South Block, Rail Bhawan, Sanchar Bhawan Shakti
Bhawan, Transport Bhawan, R&R Hospital, Terminal I, Terminal II and Cargo Sections of Delhi Airport,
and AIIMS. Energy savings potential between 23 to 46 % has been identified in the above buildings.
Energy audit study has been implemented in Rashtrapati Bhawan. Implementation work in PMO,
Sharam Shakti Bhawan is underway.
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2) INDUSTRIES
Various industries generate steam and electricity for subsequent use within their facilities. When
electricity is generated, the heat that is produced as a by-product can be captured and used for process
steam, heating or other industrial purposes. Conventional electricity generation is about 30 percent
efficient, whereas combined heat and power (also called co-generation) converts up to 90 percent of
the fuel into usable energy. Advanced boilers and furnaces can operate at higher temperatures while
burning less fuel. These technologies are more efficient and produce fewer pollutants.
Over 45 percent of the fuel used by US manufacturers is burnt to make steam. The typical industrial
facility can reduce this energy usage 20 percent (according to the US Department of Energy) by
insulating steam and condensate return lines, stopping steam leakage, and maintaining steam traps.
Electric motors usually run at a constant speed, but a variable speed drive allows the motors energy
output to match the required load. This achieves energy savings ranging from 3 to 60 percent,
depending on how the motor is used. Motor coils made of superconducting materials can also reduce
energy losses. Motors may also benefit from voltage optimisation.
Industry uses a large number of pumps and compressors of all shapes and sizes and in a wide variety of
applications. The efficiency of pumps and compressors depends on many factors but often
improvements can be made by implementing better process control and better maintenance practices.
- Energy Efficiency in Indian Industry
Industry is the major energy consumer utilising about 50% of the total commercial energy use in India.
The six key industries namely aluminium ,cement ,fertilizers, pulp& paper, petrochemicals and steel -
consumes about 65% of the total energy use in India. The energy intensity in some of these industries is
reported to be higher than the industries in developed countries. One of the main reasons for higher
energy use is the presence of obsolete and energy inefficient processes in some of these sectors. Topromote adoption of energy efficient processes, they are identified as designated consumers under
Schedule to the Energy Conservation Act. By complying with various provisions of EC Act, as applicable
to designated consumers- namely meeting specific energy consumption norms, conduct of regular
energy audits and implementation of techno economic viable recommendations and establishment of
energy management system through appointment of certified energy manager -is expected to boost
adoption of energy efficient processes and technologies
3) VEHICLES
The estimated energy efficiency for an automobile is 280 Passenger-Mile/106 Btu. There are several
ways to enhance a vehicle's energy efficiency. Using improved aerodynamics to minimize drag canincrease vehicle fuel efficiency. Reducing vehicle weight can also improve fuel economy, which is why
composite materials are widely used in car bodies. More advanced tires, with decreased tire to road
friction and rolling resistance, can save gasoline. Fuel economy can be improved by up to 3.3% by
keeping tires inflated to the correct pressure. Replacing a clogged air filter can improve cars fuel
consumption by as much as 10 percent on older vehicles. On newer vehicles (1980s and up) with fuel-
injected, computer-controlled engines, a clogged air filter has no effect on mpg but replacing it may
improve acceleration by 6-11 percent.
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Innovative Energy Management SolutionsEnergy management solutions can be broadly classified into demand side and supply side management.
While the former deals with making specific changes in energy consumption patterns to reduce power
cost without affecting the existing output levels, the latter involves cost-effective and reliable supply ofpower. The choice ofinnovative energymanagement systems in the industries that work best for an
enterprise to reduce its power bills and optimize its profit margin are highly specific to the particular
firm or production unit. In service and manufacturing sector, heating, ventilating and air conditioning,
electric motors
Overall, the objective of the energy management program is to identify and study the potential areas
and to carry out analysis with measured data in order to evaluate the energy cost savings potential and
the investment required to implement the innovative energymanagement solutions. With today's
technologies your businesses has the scope to cut their energy consumption by up to 40% which can
translate into a 10% reduction in overall operating costs and proportionate increase in the profit margin!
In India, many early adopters of Energy Monitoring and Management Systems (EM&MS) in bothmanufacturing and service sectors through the providers of energy management services, have seen
results in the form of considerable reduction in electricity costs that seem to suggest that the payback
period for availing such services is actually in weeks and months and not in years.
IMPORTANCE OF ENERGY CONSERVATION
In a scenario where India tries to accelerate its development process and cope with increasing energy
demands, conservation and energy efficiency measures are to play a central role in our energy policy. A
national movement for energy conservation can significantly reduce the need for fresh investment in
energy supply systems in coming years. It is imperative that all-out efforts are made to realize this
potential. Energy conservation is an objective to which all the citizen in the country can contribute.Whether a household or a factory, a small shop or a large commercial building, a farmer or a office
worker, every user and producer of energy can and must make this effort for his own benefit, as well as
that of the nation.
PROGRESS MADE IN ENERGY!
GROUP 2,
MBA-Tech TELECOM,
3rdyear,
Roll nos. :-
401, 423, 402, 403.