PFSLYSON in english (backup)

Project summaryThe PFS Report of Wind Power Supply to Ly Son Island District has contents asfollows: - Identifying project size and construction site.. Legal backgrounds for calculation

ELECTRICITY OF VIETNAM INSTITUTE OF ENERGY

Draft Report

PRE-FEASIBILITY STUDY

OF WIND POWER SUPPLY TO LY SON ISLAND DISTRICT,

QUANG NGAI PROVINCE

Hanoi, September 2003

I Project summary

The PFS Report of Wind Power Supply to Ly Son Island District has contents asfollows:

- Identifying project size and construction site

- Proposing main technical solutions for meeting future electricity demand incompliance with natural conditions, socio-economic development orientation of LySon Island district in particular and the whole Quang Ngai province in general

- Estimating construction work volume and investment requirement

- Determining economic and financial effectiveness of the project The organizationsinvolved in the project are power company No.3, Institute of Energy and PowerUtility of Quang Ngai province

After calculation and analysis, the project has following results:

- The project will be put into operation in 2005 and terminates in 2030

- Reduced CO2 emission over the life span of the project is 97097.2 tons of CO2

- Economic and financial indicators are good if electricity selling price is 10.53UScent/ kWh and CO2 emission reduction are taken into account, and they are asfollows:

FIRR = 7.7 % FNPV = mil.US$ 0.05 B/C =1.02

EIRR = 0% ENPV = mil.US$ 0 B/C = 1

- The project will contribute in economic development, job creation, increasing livingstandards for the people, ensuring reaching socio-economic indicators set out by theIsland district such as GDP growth rate of 8% by 2005 and 10% by 2010

II Location map of the project

Ly Son Island district is located in northwest of Quang Ngai province with latitudecoordinates from 15o32' to 15o58', longitude coordinates from 109o5' to 109o14' east Itlays on the way to Eastern Sea through Central region via Dung Quat, 25 miles from theDung Quat industrial zone in the west and 18 miles from Sa Ky port of Son Tinh district

in the south- west

III General introduction

3.1 Electricity demand forecast for Ly Son Island district for 2005, 2010

3.1.1 Legal backgrounds for calculation of electricity demand in 2005, 2010 for Ly Son island district.

- "Plan of rehabilitation and development of power network of Quang Ngaiprovince for the period 2000-2005 with consideration to 2010" prepared byInstitute of Energy and approved by Ministry of Industry

- "2001-2005-2010 socio-economic development plan for Ly Son islanddistrict" prepared by Quang Ngai Department of Planning and Investmentand approved by People Committee of Quang Ngai province

- 2001-2005 Socio-Economic Development Plan for Ly Son Island Districtprepared by people committee of Ly Son district

- Resolutions of Third Party Congress Of Ly Son District Party Unit for theperiod 2001-2005

- Existing electricity demand of sectors and forecast electricity demand for

2005, 2010 for Ly Son Island District

- Current status of power network and electricity supply - consumption in

1999, 2001 of Ly Son island district provided by People Committee of LySon district

3.1.2 Method of Electricity demand forecast

According to Degree No 389/1999/QD-TCTK dated on June 6th, 1999 ofGeneral Directorate of Statistics, electricity demand is calculated with 5 sectors asfollows:

- Industry- construction

- Agriculture- Forestry- Aquatic

- Service – commerce

- Residential lighting and management

- Others: include electricity supplied to schools, hospitals, public lighting andother activities not included in four above groups

Electricity demand of Lyson Island is calculated based on direct forecastmethod According to this method, electricity demands are calculated for sectorsbased on electricity consumption norms and production scale of each user

- Industry- construction loads: are calculated based on existing load statistic data

based on capacity and production scale or electricity consumption norm perproduct.

- Agriculture - forestry – aquatic loads : mainly used for services for breedingand aquatic activities and for irrigation pump machines

- Commerce – service loads: are calculated based on the capacity of consumptionequipment in service and development rate in this sector

- Residential lighting and management loads are calculated based on Document7647/EVN/DNT-MN dated on Dec, 29th, 1998 of Electricity of Vietnam.Residential consumption norm is 275 kWh per household in 2005 and 470 kWhper household in 2010 For administration agencies, electricity demand incoming years are based on existing electricity consumption considering annualdevelopment rate as well as electrical equipment modernization level

3.1.3 Electricity Demand For Ly Son Island District In The Periods Up To

No Sector

rate (%)

A (103kWh)

% A (103

kWh)

% 2005

2000-2010

3.2 Introduction of Ly Son Wind Power Project

This is a project using wind turbines to produce electricity for Ly Son island district

Participating agencies :

- Power Company No 3, the Investor and Owner of the project

- Institute of Energy, Consultant

- Power Company No 3 and Institute of Energy will look for foreign investment

- Power Utility of Quang Ngai province under Power Company No 3 is responsiblefor operation, management of the project and power network on the island afterproject has been completed and put into operation

IV Rationale

4.1 Current status of wind energy application for electricity generation

Wind power generator-turbine was studied and applied in Vietnam since early 80th yearsunder the framework of one national research program on application of new andrenewable energies The organizations involved in this program were : Institute ofEnergy, Ministry of Transport, Engineering Institute of Ministry of Defense, Renewableenergy Research Centers of Hanoi and Ho Chi Minh City Universities Most of theseorganizations carried out research, experiment of wind turbines with capacity from 150

W to 5 kW However, the wind turbines with capacity above 1 kW were failed As of theend of 1999, about 1000 family-sized wind turbines were installed and used in thecoastal areas from Da Nang towards the south

In 1999, one wind turbine with capacity of 30 MW sponsored by Japan has beeninstalled in Hai Thinh commune, Hai Hau district, Nam Dinh province This windturbine has the largest capacity in Vietnam so far, however, unfortunately, it almostdoesn't work The reason may be due to too low wind tower (only 12 m) and it wasshadowed by trees and topography around The second large wind turbine (2 kW) wasinstalled in the end of 2000 in Dac Ha district, Kon Tum province, sponsored by To Ho

kV company (Japan) So far this turbine is well operating

- Wind power project in Khanh Hoa : Total installed capacity is 20 MW to beinvested by VENTIS - FRG under scheme of BOT The procedures at Vietnamese sidewere completed, however, so far the project is not yet implemented

- Wind power project in Quy Nhon : total installed capacity is of 30 MW, to beinvested by the Clean Energy Joint stock Company under the scheme of BOT Atpresent the feasibility study of this project has been completed

- Wind power project in Ninh Phuoc district, Ninh Thuan province: Capacity of

625 kW This is a pilot project based on the cooperation with Indian Government TheIndia will sponsor 55% and Electricity of Vietnam will bear remainder 45% The FSreport of the project has been completed

- Wind power project in Bach Long Vi Youth Island district : Capacity of 800

kW This project is invested by the Government of Vietnam At present, the project is atstage of equipment procurement bidding

4.2 Difficulties and problems pertaining to wind power projects.

- Technical aspects : For Vietnam, hybrid system of wind - diesel powergeneration is very new, requiring high technology needed to be imported Therefore,installation works must be carefully discussed between Vietnam machine installation

company and equipment supplier and the supplier must be responsible for instructions

on operation and maintenance later

- Regarding transport : The equipment is heavy and large, the island is far frommain land, therefore, transportation of equipment will meet many difficulties It needs toenhance some ports and roads from ports to the project site

- Regarding investment : it needs to have policy to support investment andpolicy on subsidy for electricity prices on the island

4.3 The objectives of sustainable development

The Island district will mobilize all resources for promotion of sea economicdevelopment, integrating expansion of fishery services, tourist services, commerce,stabilization of economic development in order to ensure high economic growth rate,eradication of hungry households and alleviation of poor households, changing ruralaspects and maintaining national defense security

Particular objectives :

- GDP growth rate in 2001-2005 is 7 - 8% / year, in 2006-2010 is 10% / year

- Average income capita per year will be 403 US$ in 2005; 540 US$ in 2010

- Natural population growth rate : 1.6% in 2005 and 1.4% in 2010

- Annual increase of ship quantity is 10

- By the beginning of 2005 there will be a clean water system for living andproduction

- By 2005, there will be no hungry households and 70% of poor houses will bereduced

Table 4.1 : Targets of Sustainable Growth Rates of Ly Son Island District

4.4 Policies of Vietnam Government on Wind Energy

Development of renewable energy must be based on the objectives of economy, society,environment and living standards in each ecological area The Government can providefinancial assistance for renewable energy projects based on average income of rural andmountainous households 100% tax exemption for import of renewable energyequipment and technologies Efforts should be focused on study and application ofrenewable energy technologies in areas which are impossibly connected to nationalpower grid due to difficult topographical conditions or too expensive investment Windenergy should be used in island and mountainous areas where are impossibly connected

to the national power grid and encouraging use of self-made small wind turbines anddeveloping grid connected large wind generator turbines

4.5 Benefits of The Project

- Electricity cost is reduced in comparison with case of using only diesel powergenerator

- Saving fossil fuels, contributing in ecological environment protection

- Contributing in improvement of sprit and material life of people living on the island

V Geographical Location And Natural Conditions of Ly Son Island District

5.1 Geographical Location and Topographical Features

Ly Son district is an island district which was separated from Binh Son district in 1993

Ly Son island district has also name of Cu Lao Re existing from end of XVI century andName of Ly Son began from 1998 This is one of 13 districts, towns of Quang Ngaiprovince

Location : Ly Son Island district is located in northwest of Quang Ngai province withlatitude coordinates from 15o32' to 15o58', longitude coordinates from 109o5' to 109o14'east It lays on the way to Eastern Sea through Central region via Dung Quat, 25 milesfrom the Dung Quat industrial zone in the west and 18 miles from Sa Ky port of SonTinh district in the south- west

Area : Ly Son island district has natural land area of 997 ha including two islands (bigand small) namely Ly Vinh and Ly Hai communes

Population : total population of the district as of June 2001 was 19500 people living in3995households, of which 700 people are belonged to military forces

Topography : In general, the topography is even with elevation from 20 to 30m over thesea surface (there are no big rivers or streams on the island There is only small streamwhich flows in rainy season) Most lands have slope less than 8o, suitable foragricultural production and residential settlement

Climate : The climate is tropical with monsoon wind The rainy season lasts fromSeptember to February with rainfall accounting for 75% of whole year rainfall Dryseason is from March to August subject to south - east wind Average annualtemperature is 26.4 oC Average annual rainfall is 2000 mm

Natural resources : The land is surrounded by sea, therefore the district has favorableconditions for raising aquatic products Total reserve of seafood of Quang Ngai sea isabout 80000 tons of which exploitable potential is of 33000 tons/year Ly Son islanddistrict alone can exploit 6500 tons/year

b) Based on data of system of meteorological stations uniformed in terms ofobservation medium, observation time calculation methods and self-registering devices,Meteorological Institute carried out calculation of average annual and monthly windspeeds for the whole network of meteorological stations and average hourly windspeeds for those station which have self - recording devices

According to data measured in Ly Son hydro-meteorological station over 13 yearperiod from 1985 to 1997 at height of 12 m above ground surface, monthly and yearly

Table 5.1 : Monthly and yearly average wind speeds

-Other than in mainland, on island day, wind is steadier, however, it is weakest at timeafter sunset

Based on data of monthly and yearly average wind speed at height of 12m measured atmeteorological station, we can calculate monthly and yearly average wind speed atheight of 50m by using the following formula:

V1/Vo = (H1/Ho)n

Where:

V1/Vo = (H1/Ho)n

V1 : wind speed at height of H1 (height at which wind turbine is located)

Vo: wind speed at height of Ho (Ho = 12 m at meteorological station)

N: exponent ( =0.2  0.4) depends on topographical conditions of wind turbine site (on

Ly Son Island, if site is selected in the field with obstacles lower than 2m, n can behigher than 0.3)

Energy features must be considered as follows:

If Vi is wind speed measured at even time intervals (hourly or every 30, 20, 10minutes…) in time duration t, the average wind speed in t duration is:

Vat=nVi/n (m/s) with i=1,2,3 ….n

Energy produced by wind in t time:

dv v f V

K

K is energy coefficient It indicates how actual wind energy is bigger than wind energycalculated at average wind speed

K is calculated for 28 meteorological stations throughout the country

Table 5.2 K coefficients of some meteorological stations

4.03.02.9

456

Quy NhonNha TrangHoang Sa

2.92.82.1

 Frequency of wind speed

In order to exactly assess wind energy and electricity generated by wind generator, it needs to determine frequency of wind speed classes Therefore, occurrencefrequency of wind speed class or function of wind speed distribution is very important.For wind distribution as in our country, Weibull equation is good for series ofexperimental data Weibull function has two basic parameters – parameter ofdistribution size of average wind speed and parameter for distribution form, non-

turbine-dimension in the range of 0.7-2.3 depending on areas For inlands it is higher than thatfor inland but less than 2.

Table 5.3 Occurrence frequency of wind class at LySon meteorological station

Frequency (%) 35.8 3.7 23.7 3 4.4 11.9 17.5Weibull equation for wind speed:

E=1/23 (1+3/) gamma function ()

Average annual density (W/m2)

E=1/23 (1+3/)

or E=1/2nV3

i where  : average density of air (kg/m3)

If variation of  is ignored Wind energy density depends on exponent 3 of wind speed,therefore, it varies daily and yearly as wind speed but at bigger amplitude

Wind turbines have different working characteristics Each type has different startingspeed (Vkd) When V> Vkd, electricity generated by wind generator increasesproportionally with V3 until V>Vdc (regulated speed) when automatic regulator actuates(usually by turning plate an angle in order to reduce action of wind) to maintaincapacity and rotor rotation stable If wind speed increases to Vc (max permissible windspeed), regulator will stop turbine

Average electricity produced by a wind- turbine generator is:

kd

V

V dc V

V

dv v f V

dv v f V

V dc

V

dv v f V dv v f V V V

dv v f V

 Calculation of monthly, yearly wind electricity production:

Table 5.4 : Wind energy potential of LySon island district:

The following table presents average monthly electricity generated by 3 wind-turbines

of Fuhslaender, Lagerwey, W-2920/ 250 kW with the same capacity, e.g.250kW, whichwas calculated by climate center of Hydro Meteorology Institute

Table 5.5.: Average monthly and yearly electricity generation at the height of 50m

These three types of wind turbine have the same capacity (250 kW) but different windswept area Turbine of Fuhslaender can generate maximal capacity of 320 kW, withoutcapacity regulation at level of 250 kW therefore it can use wind energy at wind speedsfrom 12 m/s to 22 m/s which cannot be used by other wind turbines

If using three wind turbine- generators Fuhslaender, annual average electricityproduction is 3x781 =2443 MWh in stage I (up to 2005), and 4686 MWh in stage II (up

to 2010) However, these amounts are not commercial electricity because:

- Its portion is used for running equipment (motors of control, regulationsystems, monitors, etc.)

- A portion is lost because of no load or low load Loss rate depends on localsocio-economic development

- System loss.

 Back- up electric generator

a) Selection of capacity of back-up generator

In order to ensure supplying electricity to consumers during the time when wind is tooweak or calm, it needs back-up electric generator At present, many wind turbinemanufacturers recommend using diesel generator as hot back-up generator Capacity ofdiesel generator is determined based on electricity demand and electricity production ofwind turbines

According to table of monthly average electricity production of wind turbineFuhslaender- 250 kW as presented above, electricity generated by 3 and 6 turbines in

2005 and 2010 respectively are as follows:

Table 5.6 Electricity production of three and six wind turbine generators

Fuhslaender 250 kW in 2005 and 2010 respectively

Unit: kWh

Total electricity demand on the island is 1980 MWh in 2005, 3896 MWh in 2010 Therefore, average yearly electricity production of 3 and 6 wind turbines Fuhslaender(250kW) in 2005 and 2010 respectively is enough for demand However, because wind

is not evenly distributed in all months of the year, therefore in May, June, July, August

(250kW)

2005 (3x250 kW)

2010 (6x250 kW)

and September generated electricity is not enough for demand This insufficientelectricity amount will be covered by diesel power generators.

Table 5.7 Electricity demand generated by diesel power generator on big island.

In 2005, electricity generated by diesel generator will be about 312 MWh, of which 91.3MWh in July (max.) corresponding to power demand of 380 kW (operation time ofdiesel generator is 8 hours per day)

In 2010, electricity generated by diesel is about 595 MWh, of which 176.8 MWh in July(max) corresponding to power demand of 737 kW (operation time of diesel generator is

8 hours per day)

At present, one diesel generator 1x380 KVA can generate only 210 kW and its operation

is not stable, therefore by 2005 a new diesel generator needs to be added Existing dieselgenerator station is 650 m from anticipated site of wind turbine This station has beendesigned for installation of second diesel generator with capacity at 400 kVA Therefore

it is recommended to install a diesel generator station on the island

Considering operation characteristics of diesel generator and wind turbine, features ofexisting diesel generator station and available diesel generator in markets, installation ofone back up 400 kVA diesel power generator is recommended In the period up to 2010,required back-up capacity is 740 kW, therefore, by then this diesel power station should

be added with one more 400 kVA diesel power station should be added with one more

400 kVA diesel generator

Required electricity production (monthly average) (kWh)

Electricity shortage to

be covered by diesel power generator (kWh)

Operation of wind turbine and back-up diesel power generator: wind turbine can start atwind speed of 3 m/s (wind of second class) When wind speed increases, electricitygenerated also increases.

Wind turbine has regulator which adjust position of regulating small plates in order togenerate amount of electricity matching the loads

In case wind is too weak or calm, the automatic transfer system (ATS) will start back-updiesel generator, regulate its electricity generation in order to meet demand

In case wind is too strong, wind turbine will automatically turn its direction and is braked and protected

self-Operation conditions are automatically controlled by computerized program, dutyofficers working with wind turbine and diesel generator is also used together withcontrol and distribution house of existing diesel power station installed with equipmentsuitable to modern technology of wind turbine Automatic transfer system (ATS) islocated at diesel power station, control signal from wind turbine is transmitted to controlplace by cable line

5.2 Necessity Of Project Construction

Ly Son is an island district far from mainland with important economic and defenseposition People are living on the island since hundred years ago The island has goodconditions for permanent inhabitation with agriculture and fishery In order to develop

Ly Son to be strong island district, contributing in economic development of QuangNgai province, the first issue should be solved is electricity supply for the island district.Electricity is primary need for development of home crafts industry and other sectorssuch as agriculture, fishery, services … The electricity also contributes in increasingliving standards for people

At present, on Island, there is diesel power unit But this power resource has highelectricity production price, therefore, it makes difficulty for power sector's operation

On the other hand, existing power diesel generator with capacity of only 320 kW is notenough for electricity demand The wind potential of Ly Son Island is relatively good,therefore, using wind energy for generating electricity is realistic and necessary becausewind is renewable energy resource infinite, clean, not making environmental pollution.Using wind energy will save fossil fuels such as anthracite, oil and gas which becomeexhausted

5.3 Objective, Scope of Study and Outputs to be Gained from The Project.

With this project, apart from getting one wind power generating resource, the followingtargets are also gained :

- Determining whether application of wind turbines is suitable and bringingeconomic effectiveness in Vietnam

- Determining suitable unit capacity of wind turbine

- Accessing to new technologies for using wind energy for electricity generation

- Using abundant natural energy resource in our country in order to save fossilenergy resources as well as contributing in protection of ecological environment

5.4 Reduction of Hunger and Poverty

At present, the share of hunger and poverty is relatively high In the whole district, 50%

of households has access to electricity but there is no electricity provided forproduction The diesel power generators have small capacity, only enough forresidential demand of haft population of the island district On the other hand, electricitysupplied from diesel power generators has high production costs, therefore, electricityprice at group meters is high (about VND 1500 / kWh) and household's electricityconsumption is low (about 12 kWh / household / month)

When this project is in operation, it will improve life conditions for rural areas of islanddistrict and it is anticipated that by 2005 about 85% of households will be able to useelectricity and 95% of households by 2010 Using wind electricity with price lower thandiesel electricity together with upgrading power network from now to 2005 and 2010will make increased electricity demand of households Process of rural electrificationand development of sectors will make life of people changed Income of inhabitants willincrease Households will buy more electric appliances for living purposes as well as forproduction Life quality of inhabitants will be increased Share of hunger and povertywill be reduced It is anticipated that in 2005 the hungry households will be eliminatedand 70% of poor households are reduced

5.5 Technology Transfer

5.5.1 Wind Generator Turbine

Wind Generator Turbine is an equipment which transforms wind energy into electricenergy In areas with good wind conditions, this equipment works very effectively,producing cheap electricity For areas without national power grid and good windpotential, the political, social and economic benefits will be brought in For areas withnational power grid and good wind conditions, the grid connected wind power projects

will operate economically Apart from that, the wind power equipment also contribute inenvironmental protection because this is a clean energy resource.

The large wind turbines are manufactured in many countries on the world and fall intothe following categories :

- Small size : 1-50 kW with rotor diameter of 5-16 m

- Medium size : > 50 - 500 kW with rotor diameter from > 16 m to 45 m

- Large size : > 500 kW to 5000 kW with rotor diameter from > 45 m to 130 m.Well known large wind turbine manufacturers on the world are : VETAS,BONUS, NEG MICON, NORDEX, ENERCON, ZOND, WIND WORLD,WINDMASTER, GAMESA, MADE… Their products are manufactured with moderntechnologies and in accordance with European and International standards

The main indicators showing advantages of large capacity wind turbines and feasibility

of project with these equipment are :

- Power curve of wind turbine is suitable to wind conditions in the project site

- Reasonable price of equipment

- Convenience in installation and maintenance

- Equipment operating well in the environmental conditions of installation area

- Operation is safe and exact

- Operation noise is within acceptable limits

Each of the above mentioned well known equipment manufacturers can meet mostabove indicators One thing must be considered is price and equipment size that must besuitable to conditions for transportation and installation, erection

Based on capability of port in terms of allowable loads, size of equipment serving forinstallation, erection such as crane to be brought to the island, the size of wind turbinewill be suitably selected for the project

5.5.2 General introduction and specifications of wind turbine Fuhrleander 250 kW

Type : 3 blade rotor with pitch control, up wind

Manufacturer : Fuhrleander GMbH

Anf der hobe 4 56477 waigandshain

FRG

Life span of wind generator - turbine 25 years

- Rotation speed : 39 rpm (corresponding to 250 kW)

- Max tip speed : 60 m/s

5.5.3 Information of outputs of the project

The wind farm consists of some wind generator turbines As mentioned above, in order

to have convenience for equipment transportation and installation, wind turbines areselected with capacity of 250 kW each

Annual average electricity production : 4686 MWh

VI Project Implementation Plan

- Preparation of PFS report, approval : 2003

- Survey, investigation of wind resource : 2004

- Design, construction, installation of three wind turbines and one diesel generator: 2005

- Starting operation : 2006

- Adding three wind turbines and one diesel generator : 2008

- Ending operation : 2033

VII Contribution To Sustainable Development

7.1 Benefits brought in for economy, society and Environment

* For economy, society :

Ly Son Island still has many difficulties, not yet developed economy due to lack ofelectricity When having been completed, the project will supply 1500 kW for electricitydemand for Ly Son island district This will promote economic development, ensuringsocio-economic targets set out by the island district such as GDP growth rate of 8% in

2005 and 10% in 2010 The wind farm will help solve economic difficulty of the islanddistrict Wind electricity will have cost much lower than electricity produced by usingother fuels The sectors using electricity such as industry handicrafts, trade, services will

be developed, of which sea-based economic sector is pioneering, combining withprocessing services for fishing The development of sectors will create new jobs forlaborers, increasing income for people, eliminating hunger and alleviating poverty,contributing in stable economic sustainable development, improving rural areas,strengthening defense security

* For environment

Using wind as a clean energy resource available in the nature will not makeenvironmental pollution, will have effectiveness in keeping atmosphere clean On thecontrary, using other energy resources such as coal, oil, will produce significant gasemissions, causing unbalanced ecological environment Therefore wind power projectwill contribute in sustainable development and protection of environment for this seaarea

7.2 Other Effects of The Project

With low electricity price, the project will encourage households to use electricity,leading to increase of electricity demand Therefore, on one hand, the project makesculture and society developed and on the other, it effects economic sectors, especiallypower sector in re-balancing electricity demand - supply

The project also promotes development of clean technologies especially for sectormanufacturing machine and equipment.

Besides, this kind of project can be duplicated in many other areas, especially in coastalareas where wind energy is abundant

VIII Calculation Of Amount Of Reduced Green House Gas Emission Due To Replacement Of Old Diesel Power Generators With Wind Power Units.

Wind turbine generators are clean power resources, no pollutant emission because theydon’t use fossil fuel to operate

In order to calculate emissions to be reduced when using wind for electricity generation

we will compare the case of wind turbines with the case of using old diesel powergenerators without wind power project to supply electricity for Ly Son island district

1 Rate of diesel oil (DO) consumption of old Diesel generators ( based on data ofCan Tho thermal power plant)

B= 260 g/kWh

2 The amount of DO consumed per year (kg) if there is no wind turbinegenerators:

B= bxE

Among which E is electricity production per year (kWh)

Heat value of DO : 11000 kcal/kg

Equivalent heat value (OE) : 10000 kcal/kg

The amount of DO consumed per year (unit: TOE) = bx11000/1000000

Amount of CO2 , SO2, NOx to be reduced over 25 year life-time of the project is

97097.2 , 188 and 102.46 tons respectively

IX Project Financial Analysis

9.1 Calculation of Total Investment Cost

9.1.1 Legal Documents Used for Financial Analysis

- Works to be done and some unit costs based on results of survey at Ly Sonisland district, Quang Ngai province

- Project management costs according to the Circular No 08/TT-BXD dated16/11/1999 by Ministry of Construction

Amount of

DO consumption (TOE)

Amount

of CO2 reduced (tons)

Amount

of SO2 reduced (tons)

Amount

of NOx reduced (tons)