1. Wind Turbine for Islands Komaihaltec’s “KWT300” Wind Turbine for Islands Komaihaltec’s “KWT300”

2. Our Philosopphy Prepared by Komai haltec Inc.

3. Corporate History Futtsu Plant Wind Tunnel

4. Prepared by Komai haltec Inc. Major Bridge Projects Tokyo Aqualine Tatara Bridge Tsuneyoshi Bridge

5. Prepared by Komai haltec Inc. Major Building Projects Shanghai World Trade Center Tokyo sky tree (2011) NHK OSAKA

6. ３００ｋ W Wind Turbine ： KWT300 Prepared by Komai haltec Inc. Blade Length ： 16 ｍ Nacelle - weighs under 18t Tower Height ： 41.5m （ 4 blocks: each weighs under 10t ） Rated Capacity: 300kW Survival wind speed: 70m/s Cut-in wind speed: 3m/s Cut-out wind speed: 25m/s

7. Prepared by Komai haltec Inc. Development of WT for Severe Conditions Design For Mountain Areas and islands : - Easier transportation with min 10ton truck. -Very high resistance to turbulence -High resistance to Typhoon Control Program for Microgrids -Soft cut-in, cut-out -Output control

8. Outline of Construction Foundation size: 10m x 10m (standard size) Construction Yard: 30m x 40m Prepared by Komai haltec Inc.

9. Construction of a 300kW wind turbine system by a 60-ton crane Erection of a tower → Installation of a frame for hoisting a nacelle → Hoisting of the nacelle → Installation of the nacelle by rotating the frame Environmental Business Division, Komaihaltec Inc.

10. Nacelle installation with wiring system ⓪ Tower erection ↓ ① Frame assembling ↓ ② Nacelle wired up ↓ ③ Slide and Fix Nacelle ① ② ③

11. Prepared by Komai haltec Inc. Modern Technology ・ Induction generator ・ Active Pitch ・ Active Yaw ・ SCADA monitoring system ・ AC-DC-AC Full Convertor

12. Prepared by Komai haltec Inc. Performance Rated WS ： 11.5m/s (instant value) Cut-in WS ：３ m/s Cut-out WS ： 25m/s Survival WS ： 70m/s

13. Prepared by Komai haltec Inc. Certification １． Certified by Germanischer Lloyd 2 ． Evaluation On site performance is evaluated by a project team including University and independent researcher Power performance test done by IIE Mexico

14. 300kW Wind Turbines for Islands Issues of wind energySolutions by our 300kW Wind Turbine “KWT300” Impact on the grid system with limited capacity AC-DC-AC convertor (Output will be much smoother than other wind turbines without one) Output control System solution provided Difficulty in transportation and construction Compact design Unique construction system with 60 ton crane → construction system with 25 ton crane is under development Typhoons Survival speed is 70m/s, >80m/s model under development Maintenance cost Maintained by local engineers

15. Output control of Wind Turbine for Micro Grid Test data for output power control Output control to mitigate the impact of grid frequency and voltage Reactive Power Control Control range(Power Factor) ： cosφ=-0.86 ～ 0.86 （ φ ＝ ±30° ）・ Fixed value control ： Use the fixed power factor Variables control ： Input value from the outside system (4-20mA) Output control with blade pitch Range ： 10 ％ ～ 100 ％ of 300kW By either ・ Fixed value ・ Input （ Maximum value) ・ Variables ： Input from outside (4-20mA), Time control etc. Output 30% Power limitation

16. Output control of Wind Turbine for Micro grid - Soft cut in and Soft Cut out - Limit the Output increasing speed by pitch control to harmonize with diesel engines

17. Prepared by Komai haltec Inc. Remote Monitoring for O&M Support Output Wind speed Rotation Voltage, Current Frequency Vibration Temperature Komaihaltec checks the status and logs to provide technical support for O&M  Facilitate local maintenance

18. Wind Diesel System development in Maldives Feasibility Studies since 2014. Supported by Ministry of Economic, Trade and Industry, Japan (METI) and New Energy Development Organization (NEDO) under Joint Crediting Mechanism program. Prepared by Komai haltec Inc.

19. Naifaru 株式会社 駒井ハルテック 環境事業部 - 720kW, 300kW, 640kW, 800kW DG sets - Peak demand: 1,000kW - Min demand: 400kW - Annual consumption: 4,600 MWh

20. Himmafushi 株式会社 駒井ハルテック 環境事業部 - Covered by STELCO -Max demand 400kW -Min demand 130kW -70kW IPP Solar -400V distribution line -RO plant -Food Processing Plant -Fish processing Plant (not grid connected) Optimal mix of PV and Wind is being studied.

21. Wind Monitoring at Maldives Prepared by Komai haltec Inc. Observed at 40m heightCorrected for 10 year average Naifaru5.27m/s5.48m/s Gulhifalhu5.22m/s5.40m/s Naifaru Gulhifalhu

22. WT Simulation in Naifaru, Maldives case Electricity demand [kWh] Wind energy generation [kWh] limited units [kWh] Net units from WTs [kWh] Wind penetration rate Capacity factor of WTs One unit5,233,528453,4442,508450,9368.6%17.2% Two units5,233,528906,88882,542824,34615.8%15.7% Three units5,233,5281,360,325268,3621,091,96320.9%13.9% Demand WT Output Excess Energy Simulation case for Two of 300kW wind turbines

23. Tentative Project Benefit annual average wind speed No of units Total Capacity Annual Energy Production Annual Cost Saving (DG 1kWh= USD0.4) Naifaru5.34m/s 2600kW884MWh /yrUSD 352,600 /yr Himmafushi5.26m/s 1300kW403MWh /yrUSD 161,200 /yr Gulhifalhu5.26m/s 1300kW419MWh /yrUSD 163,000 /yr 株式会社 駒井ハルテック 環境事業部 Initial Cost Estimation for Two units of 300kW installation : USD 3,200,000 Simple payback period without subsidy : 9 years for Naifaru, 10 years for Himmafushi and Gulhifalhu

24. Solar and/or Wind ? Prepared by Komai haltec Inc. Typical Load Curve for a residential Island Sample PV out put curve for Sunny, Cloudy and Rainy day Wind energy can contribute the evening peak hours, when there is no sunlight.

25. Niijima Island Smart Grid Project Prepared by Komai haltec Inc. Niijima Island - 150km south of Tokyo - Peak demand: 4.4MW - Min demand: 1.9MW -5 units of Diesel Generators (Total Capacity of 7.7MW) -Submarine cable connecting to adjacent Shikine Island

26. Demonstration of RE control with Forecast Prepared by Komai haltec Inc. Renewable Energy Penetration : Max. 50%

27. Frequency control DG control IF function Economical operation control Demand and supply Planning Demand and supply Prediction SCADA function RE power output control Energy Storage control Consumer side control Consumer side storage, demand and supply control system Integrated control system Existing DG control panel RE output prediction system Niijima Micro Grid Control System

28. Demonstration Project by NEDO Ust-Kamchatka, Russia Prepared by Komai haltec Inc. ・ Cold Climate Model ・ WT surplus energy stored in hot water heated by electric heater - In operation from Dec 2015

29. 29 Heat station Wind Farm metering WT 300kW×3 Public use metering Heating control WT SCADA Oil boiler Diesel Power Plant （ Grid ） DG DG 800kW×10 monitori ng ＰＣ ＰＬＣＴＰ Monitorin g control ＰＬＣ Electric heater Central control panet Heating electricity Control system Oil boiler Micro-grid pilot in Ust-Kamchatka Micro-grid system without battery Energy stored in the form of hot water by using Electric Heater Grid Min demand: 1.6-2.0 MW DPP capacity: 800kW x 6 DG 300kW x 3 WT + Electric heater + Control system Commissioned in Sep 2015

30. Advanced RE use in Fukushima Operated by National Institute of Advanced Industrial Science and Technology (AIST) Prepared by Komai haltec Inc. - Wind, Solar and Hydrogen energy storage flexibly controlled

31. For more information, please contact: TOYODA, Leiko Planning Manager, Renewable Energy Business Department Komaihaltec Inc. Email: toyoda@komaihaltec.co.jp Website: www.komaihaltec.co.jp/ENV/