Welcome! It is a privilege to present, "Sinostorage DC Microgrid Presentation" to Bahvest Board of Directors!

Welcome! It is a privilege to present, “Sinostorage DC Microgrid Presentation” to Bahvest Board of Directors!.

Company Profile Based in China, Shenzhen Sinostorage Energy Co., Ltd is a specialist manufacturer of battery energy storage systems and back-up power solutions for various commercial, industrial, and residential scenarios. With 14 years of Energy experience, 60 engineers, reliable quality, and effective supply chain management, we are capable of delivering high- quality solutions and customized production to help our customers realize greater value. We boast a cuffing edge R&D team, fully automatic battery pack assembly lines, manufacturing ability of the whole industry chain including SMT patch mold injection molding, Battery Management System(BMS), Power Conversion System(PCS), Energy Management System(EMS), cabinet assembly, and comprehensive machine testing. We follow rigorous IS09001 quality management system, and implement strict production process control. Our products have been certified and sold to over one hundred countries and regions, and have been recognized repeatedly by world users and markets..

From structural design, sheet-metal processing, powder-foam spraying, to general assembly and pv inverters, residential energy storage and C&I energy storage..

Prefabricate micro-modular data centre FDC, containerised energy storage, containerised inverters, etc..

Enterprise Vision Become the world's leading supplier of integrated solutions for lithium battery energy storage systems , products, operation and maintenance services provider and value symbiosis platform..

Sinostorage Team – - Wullersdorf DC Microgrid project Team Qualification Ir Xie CH Masters Degree, Team Leader Jiang K Charger Manager, Specialist Xiong, L Charger Manager, Specialist Yang, J Manager, DC Microgrid System.

DC Microgrid Proposal. World class #1 Ess CATL brand and Tier 1 –Grade A Solar Longi panels, is the high performance, new power station DC Microgrid for Wullersdorf Highest efficiency 23%+ Panel Performance Optimise and balance ESS System Performance, system efficiency, power stability + reliability. PCS EMS latest power station technology , World Class #1 CATL ESS, safety, backups and fully integrated with DC Microgrid with HMI and commands in English language for Malaysia. The UPS Plan – Identify critical loads, group by critical loads in Switchgear Cabiet, guarantee energy strategy to supply loads 100% every day. Cyber security plan is in the EMS Energy Plan..

WULLERSDORF MINE THE SOLAR ENERGY STRATEGY REDUCE NON TRANSPORT DIESEL COST TO ZERO 2 DC MICROGRID 99% AVAILABLE = 24/7/365 electric supply is “always on” 3 SUPPLY 100% ELECTRICITY TO GOLD MINE OPERATIONS 4 SCALABLE, MODULAR = EASY TO POWER UPGRADE ENTIRE MINE 5 NEW COST IS nearZERO COST RM PER KWH = FREE SOLAR POSSIBLE ZERO COST MAINTENANCE – 5 years Sinostorage free O&M. SINOSTORAGE FULLY PROJECT MANAGES, INSTALL, GUARANTEE WORKS.

TEST TRIAL SYSTEM RENEWABLE ENERGY PV+ESS DC MICROGRID POWER SYSTEM WULLERSDORF GOLD MINE PROJECT IN TAWAU, SABAH 2024 250 kWp PV + 440 kWh ESS multi-function system CATL 1C BATTERY MAIN SYSTEM 13 MWp SOLAR PV + 40 mWh LITHIUM PHOSPHATE ( LiFePO4 ).

Sinostorage project manages full project – Operational Guarantee = 5 years.

11. PROJECT FINANCIAL FEASIBILITY ANALYSIS.

12. SYSTEM KPI AND DESCRIPTION Project ROI = (Nominal Cash return/Net CAPEX ) Proposed System PV capacity (kWp) Proposed ESS capacity (kWh) Tier 1 Panel/Microgrid world class brands First year solar energy production Certification for GITA/MlDA/MyHijau TOTAL ENERGY PRODUCTION 15 Years TNB cost inflation rate (conservative) Scope of Work Period to obtain approval - Tax Construction period - Solar works TOTAL CAPEX WITH TAX BENEFIT -RM TOTAL CAPEX WITHOUT TAX BENEFIT -RM LCOE SYSTEM COST WITH TAX BENEFIT SOLAR POWER IS 'FREE ENERGY' AFTER 3.4 YEAR COMPARE TO COST PER KWH (DIESEL ) S CAPEX COST DATA 554% 13000 40000 CATL, LONGI PANEL 25,392,724 kW Yes kW 12.5% eve 3 ears FACTORY INSTALL/DlRECT2 FACTORY after a 3 MONTHS 4-6 MONTHS 34,467,209 0.093 ack solar is free 0.719 1 ,251 RM/KWP RM/KWH RM/KWH RM/MEGAWATT.

13.

14. ROI Chart.

Achievement Wullersdorf profits RM 113 Million NPV to achieve near zero energy costs after 3 years and 4 months (breakeven period) free electricity in Year 4. Cost comparison @BEFORE @AFTER SOLAR SOLAR RM/kWh RM/kWh Diesel fuel cost : RM 0.71 RM 0.093 Achieve Environmental and social responsibility goals (ESG) :.

Energy from Solar panels creates surplus energy – The solar panels supplies the Gold Mine Operations 24/7 365 during the day, ESS around the clock with electricity. Solar Panel (DER) Resource creates surplus energy for full battery charging * every day. Battery capacity @40 MWH ESS is near 1 day reserve – upgrade and add when bad weather. CATL cell 1C technology can fully charge the battery (40 MW) in one hour. Trial system ensures Load supply function, energy model, charging rates validation PV to ESS ratio of 1:1 , 1:2, 1:3, 1:4 with up to 6 important solar experiments and KPI..

How the DC Microgrid supplies the Constant AC Load of the Gold Mine operations Solar Panel 13.0MW rated capacity generates 69.569 megawatt hours electricity on average every solar day ( DC gross kW ) DC and AC net energy is managed by bidirectional Master-Slave PCS groups controlled by EMS which acts as central brain, which incorporates the Battery BMS, and BMU. The PCS - EMS regulates the DC bus voltage and maximizes MPPT power production from solar panels with system power protection and to avoid clipping. Potentially, the system can increase energy production on demand – this new function is trialled under the trial system experiments. DC power is stored in ESS battery which specially charges at rack level and EMS performs vital battery balancing and charging functions using Sinostorage proprietary power algorithms. This ensures batteries are charged with surplus PV in DC using full power of all PCS with no energy wastages – and, CATL liquid cooling technology – the panels supply electricity to the load in the day and when PV is insufficient ESS discharges to the load at night..

Project Name WULLERSDORF GOLD MINE PROCESSING PLANT OFF GRID SCO Project Location Bukit Wullersdorf, Balung, in Tawau town, Sabah. Operating Temperature -5~45℃ Altitude ＜550m ASL Operating Profile 1 cycles/day Project Rated Capacity 13.8MW/40MWh C-rate 1C System Solution DC coupled Equipment Delivery Date 2024 Corrosion Class C2 Operations Guarantee Battery Container and Prefabricated Substation free warranty for 5 years, System is warranted to operate with 99% availability for 5 Years continuos operations by Sinostorage Assessment Requirement Ensure constant AC load over 2.1MW for 20.86h per day 43810 KW.

Cooling Method CATL 1C Liquid Cooling Project Lifetime 20 Years Proposal Initial Installation Augmentation Initial Installation (Containers) 8 - Initial Installation (MWh) 40.120 - Augmentation Planning (Containers) 0 2 Augmentation Planning (MWh) 0 4.0 Minimum Usable Capacity at end of year (MWh) 9 36.108.

Reduce the power consumption of temperature control system by 30% Pack-level liquid cooling micro-channe Improve the energy density by 100% The traditional air-cooled 40ft container can accomrnodate 3.44MVVh. while the 20ft container of liquid cooled energy storage system can accommo- date over 3.44MWh. Reduce power consumption by 30% The traditional air ca)ling system has a bw specific heat capacity of air. a heat transfer coemcient. and a low heat efficiency The 'quid cooling sy•stem relies cn large-now mediurns to realize emcient cooling and greatly reduce power consumpbom Value of Liquid Cooling System Cell temperature difference Improve the system life by 20% The liquid cooling system ensures that each cell is under the optimum working temperature. so as to improve the system life by 20%. Extremely simple O&M Adopt modular system design and pack-level intelligent liquid cooling and leakage prevention technologies. to realize easy O&M and battery replacement during capacity expansion..

32A,Y 104.3P IOA.2P AC8,mU.800V.Y DC U/LPE.t•150nm' Fuse uccg '500 ES Cmtainer Poti:2PS2S Toot—STS zz zz zz ESS 01 104* 1042 800/400'/ to zz zz zz ES 02 68COVA040t Dill-yll n kV/auv zz zz zz ES 03 zz zz zz ESS 04 Busbø OO/4TV/1W<1p) 210VA Po•g EEsm EESQ.

Typical Layout CATL ESS: 5.1 MW/17.9 MWh. 22. ATL 5.01 ATL 5.015 3801 PCS 3801 ATL 5.015 ATL 5.015 pcs.

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DC MICROGRID SYSTEM DIAGRAM ESS BATTERY IS CHARGED FROM SOLAR PANEL SURPLUS ENERGY AND LOAD IS CHARGED FROM SOLAR PANELS WHEN PV > = LOAD WHEN PV < 0, ESS DISCHARGES TO THE CONSTANT AC LOAD.

SINOSTORAGE SYSTEM CIRCUIT DIAGRAM. 25. i 3. Energy Store... AC415V hæ:z••...

DC Microgrid Solution - 13 MWP PV+ 40.128 MWH ESS DC MICROGRID 13.8 MW PCS - Sinostorage guarantees full operations.

27. Application in energy storage and power systems Cost-effective 25-year system life Passed UL 9540A certification s No thermal propagation, no fire 1,500V liquid cooling technology I I Energy consumption reduced by 30% Energy density increased by 150% Power generation Power grid Power consumption.

28. Intelligent BESS charging station CAVE —e Highly integrated, flexible configuration 12(F350kW, fast charging Battery health examination, assisting maintenance and residual value evaluation Charging with photovoltaic energy Diversified energy storage services to reduce cost and increase efficiency V2G, power transmission between vehicles and power grid.

Use case description：1P , 25℃ , 1 cycles/day, 90%DOD 10 years Container Degradation Curve %.

Year Containers Quantity NOTE ：The auxiliary consumption is considered. Usable Energy Capacity @DC (MWh) Usable Energy Capacity@AC 240V (MWh) Initial Total Initial Total 0 8 35.23 35.23 32.49 32.49 1 33.68 33.68 30.98 30.98 2 32.73 32.73 30.06 30.06 3 31.99 31.99 29.34 29.34 4 31.32 31.32 28.70 28.70 5 30.76 30.76 28.15 28.15 6 30.23 30.23 27.64 27.64 7 29.73 29.73 27.16 27.16 8 29.28 29.28 26.71 26.71 9 28.82 28.82 26.27 26.27 10 28.40 28.40 25.86 25.86 11 27.97 27.97 25.45 25.45 12 27.59 27.59 25.07 25.07 13 27.20 27.20 24.70 24.70 14 26.85 26.85 24.36 24.36 15 26.49 26.49 24.01 24.01.

The PV Energy Model – Longi Model at Tawau GPS. Productim Effectiw 349532 1976. s 79 Rat io Bdmc•s mah ms'As 70 E_Gri d PR 193. S 358291 Eff«ti« •t Of.

0. 02. 03. Contents. 32. 32. 01 03 Part I - Project Information 02 Part II Technical Proposal Part III Product Specification.

No. Item Type Note 1 Battery Type LFP Aluminum shell 2 Voltage 3.2V Voltage Range 2.5V~3.65V 3 Rated Capacity 314Ah 4 Rated Energy 1004.8Wh 5 C-Rate 0.5C Maximum C-rate 1C 6 Size（W×D×H mm） 174.7×71.7×207.1 ±0.8mm 7 Weight（kg） 5.6±0.2 8 Standards UN 38.3, UL 1973, UL 9540A, IEC 62619， RoHS、REACH.

Battery Container. 5.015MWh BESS. for reference only.

BESS. PCS. for reference only. No Item Parameter 1 DC side data Maximum voltage on the DC side 1500Vdc Maximum current on the DC side 1403A Dc voltage operating range 1000~1500V 2 AC side data Rated power 1250kVA@45℃,1375kVA@30℃ Maximum current on the AC side 1150A Rated grid-tied voltage 690Vac Grid voltage range 586.5-759V（Settable） Rated grid frequency 50Hz Adjustable range of power factor -1~1 Total harmonic distortion rate of current <1.5%(Rated power） 3 General Data Maximum efficiency 99% Isolation mode Non isolated type (external to transformer) Class of protection IP55 Anticorrosion grade C5 Cooling mode Temperature controlled forced air cooling Communication interface RS485/CAN/Ethernet Ambient Temperature -40~60℃（>45℃Derating） Permissible humidity range 0-100% (no condensation) Maximum operating altitude 5000m Weight 1400kg External dimensions 1150*2350*1435mm Certification standard IEC62477-1, EN61000.

BESS. Transformer. Transformer Data Sheet Rated Power 2500kVA Rated voltage S-2500 -0.69/0.415-0.24 Rated frequency 50Hz Storage and transportation temperature -30~70℃ Connection section Dyn11 Efficiency ≥99% Impedance Voltage 6% Cooling mode ONAN Altitude ＜2000m Anticorrosion grade C5 IP grade IP68 Standard IEC 60076.

BESS. Switchgear. Swithchgear Data Sheet Insulation Type Air Rated Voltage 400V /690V Rated Current 5000 A /2500A Rated Frequency 50Hz IP Protection IP4X (enclosure) IP67(inflatable compartment) Annual gas leakage rate ≤0.01% Operating Temperature Range -25°C ~+50°C Applicable Standards IEC 62271-1/100/103/200.

BESS. EMS Control logic Energy Storage Monitoring & Energy Management System is a cross-platform regulation and control integration energy management system, which realizes real- time monitoring, fault diagnosis and early-warning, panorama analysis and advanced control functions to meet the demands of panoramic grid operation monitoring, intelligent security analysis, forward-looking adjustment control, and dynamic panoramic analysis to ensure the operation of the power grid safe, reliable and stable. EMS will control the off grid PV+ESS system. it will control PV generating and Battery charging and discharging to ensure constant load 1.63MW for 24h..

39. Trial System. Position Project Information Trial System Project Position PV panel installed capacity Energy storage capacity Energy storage power Charge /discharge rate Requirement to Load Local average lighting duration Industrial equipment voltage DC side voltage Malaysia 250 kWp 440 kWh 440 kVa Supply to Constant load 4.9h 415 volts, 50 Hertz User pain points Diesel generators have high power generation costs.

TRIAL SYSTEM Trial system is 1/100th scale size of the Main System. It supplies constant electricity supply 24/7 to the pump load of 20 kW (Reservoir pump) Trial system validates : Solar Plant KPI ( key performance indicator) Energy PV model and Solar PV Quantum Test ESS system and microgrid function constant 24/7/365 to Pump load Reduce Main System cost for Ground Mount/Dual Axis Tracking system Supply 24 hour electricity supply to reservoir main pump load AND, (a) main canteen (b) Gold Room (c) Main Office load during the trial. Test sites for wind power. (implement 3 AC critical load grouping, the 3 independent building PV supply, with metering) Perform scientific tests for the purpose of reducing Gold Mine Energy future costs and increase energy production from the solar panel array..

41. Proposed location of Trial System and Solar Main System in Wullersdorf Gold Mine.

d 01 Jou.J0isno. SITE PLAN FOR TEST TRIAL SYSTEM 250 kWp Solar PV and 100 kW/ 440 kWh ESS.

43. TRIAL SYSTEM CIRCUIT DIAGRAM.

PRODUCT WARRANTY OPERATIONS GUARANTEE Solar Component Manufacturer / Factory Brand Warranty Lifetime Solar Panels Longi Green Energy Technology Co., Ltd 30 Years 30 Years ESS CATL Contemporary Amperex Tech Co., Ltd 5 Years 7000 cyckes Cables Shanghai Jiukai Wire & Cable Co, Ltd 1 Year 50 Years BMS/BMU Sinostorage Energy Co., Ltd 5 Years 15 Years PCS Sinostorage Energy Co., Ltd 5 Years 50 Years Maintenance Contract Sinostorage Energy Co., Ltd 5 Years Forecast & Microgrid Operations zero maintenance 15 Years * Factory is able to proffer direct performance guarantees, provided early rapproach, negotiation, direct contract..

Operations & Maintenance KPI Acknowledgement time Ftom Kota Kinabalu Office Response time Intervention time Within 12 hours Resolution time DETECTING THE PROBLEM ACKNOWLEDGEMENT OF THE FAULT REACHING THE PV PLANT BY TECHNICIAN FAULT RESOLVED.

46. TRIAL SYSTEM BUDGET. Trial S stem ESS solar nels 250 KWP Lo i 620 watt Foldin solar nels - 3 numbers Ground mount Electrical Accessories - Anderson ada tors. PSUs etc and HMI Trial owers tem X3 - Canteen. Gold Room. Main Office Combiner box Solar Cables DC AC Solar accessories - Y MC4. 5 in I etc Cha e controller - 3 nos Inverter - 3 nos Batte - 3 nos LED food li hts QPB test SINOSTORAGE DC MICROGRID USD 90.287 45115 2500 YCAN CRRC REFERENCE QUOTATION - DESIGN X uso 146056 45115 300 53722 2500 erator and DC Air conditioner E ui ent for solar still D ital multimeter Cl ammeter Thermal IR i scanner *laser ra Wind meter 10 nos Circuit breaker / Panel breaker Foldi solar nels tem 400w Solar a lication software Electrical Installation e finder TRIAL SYSTEM TOTALS 3576 6600 2000 1050 2100 2000 330 1500 3000 300 600 202,258 940,500 M 3576 6600 3000 2000 1050 2100 2000 400 1 600 330 1500 3000 300 600 7000 281,749 1,310,135 Cost Note: Some items are budgeted approximately with surplus value returned to Bahvest, some items may change in pricing by the date of actual procurement and date of suppier payment. All purchases are compliant with transparency, traceability - as needed by MIDA GITA and CA claim. The Trial order shall be part of the Main Order to be fully claimed. (Due to timing differences there could be some time out values not permitted under GITA and MIDA CA guidelines/.

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https://www.besscn.com/. 48.

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