1. Large Wind Turbine Generation
in Thailand
PINIJ SIRIPUEKPONG
ALTERNATIVE ENERGY DEVELOPMENT DIVISION
EGAT PUBLIC COMPANY LIMITED
March 2006

2. Wind speed and direction
Introduction
The mean wind speed is varies from 2.5 m/s
in the Northern part up to 4.0 m/s in the
Southern part of Thailand.
Some specific sites of Phuket Island
have been measured and evaluated by
EGAT , the result show that the
monthly wind speed is varies from
4.0 to 6.1 m/s
Wind speed and direction
in Thailand
NE- MONSOON
November-April
SW- MONSOON
May-October
Phuket Island

3. Monthly mean wind speed (m/s) at 36 m. above ground
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Avg.
1994
4.5
4.7
3.5
6.9
6.1
6.4
5.5
6.0
3.4
4.4
5.0
1995
5.4
4.9
3.9
4.3
5.3
4.1
6.8
4.8
1996
6.2
4.0
4.2
5.8
7.6
5.1
1997
5.2
3.7 NA
2.1
7.3
3.3
4.6
1998
6.5
5.9
1999
3.8
6.3
9.8
2.3
2000
3.6
7.0
2001
3.2
8.0
7.8
2002
2003
5.7

4. Backgrounds Wind Power Generation Technology has
been introduced in Thailand since 1983.
This is mainly attributed to field test works
by Electricity Generating Authority of
Thailand (EGAT). There are several
institutions that concerning in the field
of assessment wind energy, developing
performance testing and monitoring of
wind turbine for generating electricity.

5. Backgrounds
Two of 10 kW are utilized for battery charging station in the year 1993.
The 150 kW WTG was connected to the local distribution grid of PEA
in the year 1996.The 150 kW
WTG was successfully
demonstrated at Promthep
Alternative Energy Station,
Phuket Island with annually
generates 200,000 kWh to
the distribution grid.

6. The annual energy supply to the distribution grid
TABLE 1. Energy Production form WTG 150kW.( ) Phomthep, Phuket Province
Year
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
Month
Jan
19,195
18,911
8,454
10,002
32,946
20,148
35,136
21,858
Feb
10,147
14,620
16,464
6,504
**234
18,942
18,012
15,036
9,974
Mar
6,653
13,176
14,724
4,242
12,330
11,376
12,594
15,762
18,804
Apr
5,202
12,080
26,076
1,284
10,608
5,628
4,704
6,522
6,546
May
22,814
4,090
4,656
**0
26,556
15,792
21,636
21,300 -
Jun
13,371
23,506
7,728
48,942
30,426
8,820
3,636
34,818
Jul
*29010
12,119
19,107
46,020
23,106
24,162
21,126
11,826
20,190
Aug
14,034
35,976
8,944
33,828
21,846
50,184
28,914
26,172
***6708
Sep
38,634
11,965
18,354
15,618
12,708
**4602
4,854
36,780
***1566
Oct
14,243
5,980
29,868
21,804
37,842
13,626
**48
15,366
10,740
Nov
15,109
11,145
16,972
11,130
7,284
20,040
**2934
4,314
10,722
Dec
11,483
16,974
13,817
**996
6,342
6,288
17,718
15,330
Total
93,503
171,541
193,445
206,502
170,100
211,560
157,668
192,906
193,830
57,182
Remark
* Installed/Start in July1996
** System errors / Maintenance
*** Transformer Failure

7. Wind Turbine Generator Components & Specification
Type : NTK 150/25

12. 150 kW WTG Transportation to Phuket

13. Foundation & Tower

14. Generator & Blades Installation

15. Gear, Break and Generator

16. Metering & Control System

17. Wind Turbine Generation 150 kW 1996
Location of Promthep Alternative Energy Station, Phuket Island

18. The Economy of 150 kW WTG 1. Total Investment Cost 13,100,000 Baht.
2. Electrical Energy generated ,000 kWh/year
3. O&M ,000 Baht/year
4. Cost of generation (Discount rate 9.5%)
-: Without subsidy Baht/kWh
5. FIRR %

19. EGAT plan to install large wind turbine generation with capacity 750 kWx3 in Objective of the WTG Project
1. To get The RPS’s credits
2. To develop and educate Thai working group on wind energy
technology
3. To study for expansion large wind turbine generation in
Thailand.
4. To follow the national economic and social development plan.

20. This site is good for large wind turbine generation.
There have the accessible road for huge mobile crane
and 33 kV distribution line of Provincial Electricity
Authority (PEA) exists for grid connection.

21. 10 kW WTG
10 kW WTG

22. The Economy of 750 kW WTG Project
1. Total Investment Cost 42,843,000 Baht./set
2. Electrical Energy generated ,000 kWh/year
3. O&M ,000 Baht/year
4. Cost of generation (Discount rate 9.5%)
-: Without subsidy Baht/kWh
5. FIRR %

23. Future Installation of 3x750 kW WTG.

24. NRE Targets NRE NRE 8% 0.5% INCENTIVE RPS R & D Heat Heat (Incentive)
Electricity
Existing 560 MW
INCENTIVE
Electricity
Solar MW
Wind MW
MSW MW
Hydro MW
Biomass 1,040 MW
RPS
Electricity
Solar MW
Wind MW
Biomass MW
NRE 8%
Heat
(Incentive)
3,910 KTOE
Heat
~ 0.00 KTOE
NRE
0.5%
Bio Fuel (Incentive)
1,570 KTOE
Ethanol M liter/day
Biodiesel 2.4 M liter/day
Bio fuel
~ 0.00 KTOE
R & D
2545 (2002)
2554 (2011)

25. PDP2004 RPS 280 MW in 2008-2011 490 MW in 2012-2015 TOTAL = 770 MW 1 1

26. Potential & Energy Cost of RE
Applicability to Thailand
(Potential)
0.00
6.00
Unknown
Potential
Low Known
Medium
Known
High Known
Generation Cost (บาทต่อหน่วย)
14.00
Biogas
Geothermal
Tidal Wave
Solar
Wind
MSW
Biomass
Small Hydro
R&D
Goal = Higher Potential or Lower Cost
Exploit with R&D
Pilot Projects: Goal = Proven Models
3.00
9.00
ที่มา : พ.พ./ DEDE

27. RPS 140 MW (EGAT Tentative)
Mini-hydro MW
Biomass MW
MSW MW
Solar MW
Wind MW
ที่มา : แผน RPS ของ กฟผ.

28. Estimated Capacity of Renewable Energy Power Plant from RPS 5%
2008
2009
2010
2011
2012
2013
2014
2015
Total
Hydro
22.70
48.00
6.00
17.00
11.00
9.00
7.00
5.00
125.70
Biomass
4.00
14.00
90.00
60.00
94.00
421.00
MSW
0.00
18.00
3.00
20.00
16.00
95.00
Wind
2.25
12.00
68.25
Solar
1.05
8.00
60.05
Capacity (MW)
35.00
70.00
140.00
105.00
770
ที่มา : ประเมินจากแผน PDP 2004

29. Conclusion Total Investment Cost WTG = 1.20-1.50 US$/Watt
Annual Electrical Energy Generated
WTG = 1,400 kWh/kW/yr
Cost of Generation (without grant)
WTG = Baht/kWh