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© 2026 ABB. All rights reserved. LEADING THE DIRECT CURRENT (DC) POWER TRANSFORMA TION Introducing ABB’s new Infinitus DC Portfolio for Data Centers G I A M P I E R O F R I S I O , P R E S I D E N T , E L E C T R I F I C A T I O N B U S I N E S S A R E A A D R I A N G U G G I S B E R G , P R E S I D E N T , D I S T R I B U T I O N S O L U T I O N S D I V I S I O N M A S S I M I L I A N O C I F A L I T T I , P R E S I D E N T , S M A R T P O W E R D I V I S I O N A N N - S O F I E N O R D H , H E A D O F I N V E S T O R R E L A T I O N S 2 4 S E P T E M B E R 2 0 2 6 © 2026 ABB. All rights reserved. © 2026 ABB. All rights reserved. © 2026 ABB. All rights reserved. © 2026 ABB. All rights reserved. © 2026 ABB. All rights reserved.
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— © 2026 ABB. All rights reserved. Slide 2 Important notices This presentation includes forward-looking information and statements including statements concerning the outlook for our businesses. These statements are based on current expectations, estimates and projections about the factors that may affect our future performance, including global economic conditions, and the economic conditions of the regions and industries that are major markets for ABB Ltd. These expectations, estimates and projections are generally identifiable by statements containing words such as “expects,” “believes,” “estimates,” “targets,” “guidance”, “plans,” “outlook,” “on track,” “framework” or similar expressions. There are numerous risks and uncertainties, many of which are beyond our control, that could cause our actual results to differ materially from the forward-looking information and statements made in this presentation and which could affect our ability to achieve any or all of our stated targets. The important factors that could cause such differences include, among others: • business risks associated with the volatile global economic environment and political conditions • costs associated with compliance activities • market acceptance of new products and services • changes in governmental regulations and currency exchange rates. Although ABB Ltd believes that its expectations reflected in any such forward-looking statement are based upon reasonable assumptions, it can give no assurance that those expectations will be achieved. This presentation contains alternative performance measures. Definitions of these measures and reconciliations between these measures and their US GAAP counterparts can be found in the “Supplemental Reconciliations and Definitions” section of the “Financial Information” booklet found under “Q2 2026” on our website at global.abb/group/en/investors/quarterly- results.
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THE VERY FIRST GRIDS WERE DC LOCAL POWER IN THE CITY CENTER • Serve electric lighting • Coal-fired steam engines • 110V DC Milan 1883 The first continental European power plant New York 1882 The first US power plant London 1882 The world’s first power plant
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THEN AC ARRIVED… THE TRANSFORMER WAS THE TURNING POINT • Cost efficient generators • Long-distance efficient transmission Niagara Falls 1895 11kV AC overhead transmission to Buffalo City Rome 1885 First commercial AC distribution system 2kV 120Hz line Turin 1884 The world’s first long distance AC single-phase 2kV 130Hz line
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The war of the currents 1886–1893 2 competing systems © 2026 ABB. All rights reserved. Slide 5 Nikola Tesla & George Westinghouse Long-distance transmission Fewer, larger power stations with transformers stepping voltage up and down Thomas Edison Short-distance transmission More local power stations Direct Current Alternate Current
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— © 2026 ABB. All rights reserved. Slide 6 DC • One direction • Steady flow • Batteries & devices AC • Changes direction • Sine wave • Home & industries AC ADV ANT AGES Efficient Transmission AC can be easily transformed to higher/ lower voltages using transformers, minimizing energy loss during long-distance transmission Lower Maintenance Costs AC systems, particularly AC motors, are typically simpler with less maintenance vs. DC counterparts Versatility Powers a wide range of household appliances and industrial equipment - the standard for residential and commercial power supply Safety Can be interrupted more easily with circuit breakers, as current naturally goes to zero during each cycle, reducing risk of electrical fires Stable voltage DC provides a constant voltage, making it ideal for electronic devices and circuits that require stable power Simplicity in electronics Most electronic devices, e.g. batteries, solar panels and computers run on DC. Essential for modern technology Less energy loss Transmission can be more efficient over short distances and is less affected by inductance and capacitance issues Simplicity and efficiency in electrical infrastructure Less cabling required and fewer AC/DC conversion reduces energy loss HVDC systems have lower resistive losses More efficient for transporting electricity across long spans DC ADV ANT AGES
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WHY DC NOW? ABB’s DC leadership backed by scale SURGE IN DC DEMAND & SUPPLY Source: IEA World Energy Outlook 2025 Current Policies Scenario, Goldman Sachs, McKinsey 700+ ABB DC Patents 25+ Years ABB DC Leadership 1 in 4 Data Centers have ABB Electrification technology 1M+ sq ft New manufacturing capacity added by ABB Electrification in 2026 to meet growing demand First certified Solid State DC Breaker Leader in Marine DC technology First DC Data Center 2012 25x power density in Data Centers by 2030 3x renewable energy by 2035 8x installed capacity of BESS by 2035
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— © 2026 ABB. All rights reserved. Slide 8 Industry Data Center Microgrids Renewables Rail 800V DC 800V DC1000V DC 2000+V DC 1500V DC Direct Current distribution across industries Source: Bernstein, Grand view research, EL B&CI analysis Marine 2000+V DC
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— © 2026 ABB. All rights reserved. Slide 9 DC technology is at a turning point Supporting Data Center market expansion H I GH ER EFFI CI EN CY GAI N S >5% lower conversion losses DR I V I N G COPPER R EDUCTI ON 30-45% less material and space ~219 GWh energy reduction for a 500 MW AI Data Center, equal to the energy use of 59,000 EU households >10,000 ton Copper reduction for a 500 MW AI data center moving to 800V DC Architecture EN ABLI NG H I GH ER POWER L EV ELS 1 MW peak rack density Optimized Token/MW Higher rack density and lower losses deliver more performance from every MW
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— © 2026 ABB. All rights reserved. Slide 10 Future Data Centers at ~3X POWER DEMAND Enabled by Direct Current technology Source: McKinsey, Bank of America, Morgan Stanley, Jefferies, J.P. Morgan 84 GW data center capacity 2025 2030 ~250 GW data center capacity 200 MW facility considered normal today = X 30 X 4 1 MW AI GPU peak rack density in 2030 Up to 1.5 GW AI factories normal in 2030 X 1 US nuclear plant = X 1,000 40 kW average rack density in current architectures
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From Simple Server Rooms to AI Factories Why DC for Data Centers TH E AI ER A • New GPUs require new power architectures to scale up performance and satisfy the demand for hyper-density infrastructure • Generative AI workloads push racks up to 200 kW already in 2026, future systems trending above 1 MW by 2030 • 48-54 VDC rack power distribution and 415/480 VAC supply designs reach practical limits beyond ~400 kW/rack • Buildings go from 10’s to 100’s of MW and above reaching gigawatt campus sizing • Power conversion and distribution from grid to chip needs a revolution and becomes a critical bottleneck 3 SHIFTS REQUIRED TO GO BEYOND THE LIMITS OF LEGACY RACK POWER SYSTEMS: Space constraints: Move AC-to-DC conversion out of the IT rack Deliver power at a higher DC voltage (from 48-54 to 800 VDC), reducing associated current Power conversion efficiency 01 02 03
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— © 2026 ABB. All rights reserved. Slide 12 Focused development of customer offering in DC Power Solutions Incubator — • Strategic cross-business collaboration • Customer solutions focus with system approach • Enables speed & agility to serve dynamic market at varied readiness levels & requirements → Electrification SST current design development, becoming “go-to” partner of major players Scale up business PHASE 2 PHASE 1 2023 2028 2030+ Solution focus & Synchronized portfolio Speed, Agility & Entrepreneurship Component Focus Today: Systems approach Coordinated architectures released in waves Defines end-to-end DC Data Center architecture and ABB’s integrated offering Basic SST R&D across segments (e.g., traction) PHASE 0 2010
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— © 2026 ABB. All rights reserved. Slide 13 White space ~45% of CapEx Power infrastructure CapEx spend shifting to GREY SPACE Advantage to ABB Data Center offerings centered around grey space C U R R E N T Data Center architecture F U T U R E Native DC centralized high density Data Center architecture Content increase • MV UPS or DC UPS • SST • LV DC distribution, busways • DC CBs & SSCBs • Grid stability • ... Content reduction • AC PDUs, rack PDU/PSU • AC distribution, busways • LV SWGR, transformers • … Grey space ~55% of CapEx Grey space up to ~75% of CapEx White space ~25% of CapEx ~250GW Total data center installed capacity by 2030 25-40% DC capacity (GW) installed in 2030 1. Based on Datacenter Industry Model – SemiAnalysis report and ABB expert interviews, Electrical Power infrastructure scope of supply and excludes GenSets, Cooling and IT Rack solutions as well as any IT Equipment
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ABB’S INFINITUS DC PORTFOLIO Designed to power the DC revolution from source to rack
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INFINITUS DC PORTFOLIO Enabling the Data Center transition toward DC technology 1 2 3 Market-first source-to-rack DC portfolio for new DC Data Center architectures, positioning ABB as the industry leader in enabling next- generation data centers In 2027, the main critical building blocks in place across today’s transitional hybrid and target architectures Capture opportunities across the entire market and all geographies, regardless of customers’ chosen pace of adoption
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Evolution of DC topologies Meeting customers’ needs across all levels of DC readiness SOURCE GREY-SPACE INFRASTRUCTURE - POWER ROOM/POD Application — MV AC LV AC DC WHITE-SPACE Market Availability Native-DC Centralized 2027 - 2028 Energy storage 0 Legacy AC Today baseline architecture LV AC Switchgear AC UPS (up to 2,5-4,5 MW) LV AC distribution 480 or 415 VAC MV SWG G MV/LV MV GRID 13,8-35 kV LV Backup Genset MAIN PDU PDU Step-down TX (optional) Rack PDU Rack PSU415 VAC 415 VAC 480 VAC RPP Today Grid Support Solutions Whitespace localized DC1 LV AC Switchgear 800 VDC Side-car (up to 1 MW) AC UPS (up to 2,5 - 4,5 MW) LV AC distribution Rack Lineup 480 or 415 VAC Energy storage MV SWG G MV/LV MV GRID 13,8-35 kV 800 VDC or ± 400 VDC LV Backup Genset Optional BBU/CBU 480 or 415 VAC 2026 - 2027 Grid Support Solutions 2 DC UPS (up to 2,5 - 5 MW) DC Main distribution Energy storage MV SWG G MV/LV MV GRID 13,8-35 kV LV Backup Genset LV AC Switchgear DC BUSWAY AI load smoothing system DC RPP Compute Racks Row 800 VDC 800 VDC Grid Support Solutions 3 MV SWG /RMU TRU solution Transformer Rectifier Unit - up to 4.5 MW 13,8 - 35 kV Energy storage DC Main distribution G MV Backup Genset/Gas Turbine MV GRID 13,8-35 kV 800 VDC DC BUSWAY AI load smoothing system DC RPP Compute Racks Row 800 VDC MV UPS SYSTEM Grid Support Solutions Native-DC Centralized high density4 13.8 - 35 kV SST solution Solid State Transformer unit - 3-6 MW (7-10 MW on roadmap) MV SWG /RMU DC Main distribution G MV Backup Genset/Gas Turbine MV GRID 13,8-35 kV Energy storage 800 VDC DC BUSWAY AI load smoothing system DC RPP Compute Racks Row 800 VDC 13.8 kV 2027 35 kV 2028+ MV UPS SYSTEM Grid Support Solutions
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— © 2026 ABB. All rights reserved. Slide 17 Infinitus DC Portfolio | The industry’s first source to rack DC portfolio 5 Key Building Blocks – DC Power Architecture SOURCE GREY-SPACE INFRASTRUCTURE – POWER ROOM WHITE-SPACE 13.8 - 35 kV MV – DC Conversion MV Switchgear / Ring Main Unit DC Main distribution MV Backup Genset/Gas Turbine MV GRID 13,8-35 kV Energy storage B E S S / H B E S S 800 VDC DC BUSWAY AI load smoothing system Compute Racks Row 800 VDC MV AC LV AC DC S y n c h r o n o u s C o n d e n s e r G Coolant Distribution Unit (CDU) MEDIUM VOLTAGE POWERTRAINS DC SOURCES & POWER QUALITY DC POWER DISTRIBUTION DC POWER PROTECTION COOLING OPTIMIZATION 01 MEDIUM VOLTAGE POWERTRAINS Shielding the grid from AI power demands 02 DC SOURCES & POWER QUALITY High-efficiency DC conversion outside the white space 03 DC POWER DISTRIBUTION Higher power density in a smaller footprint 04 DC POWER PROTECTION Protecting people and critical hardware from overcurrents 05 COOLING OPTIMIZATION Reducing energy use across the full cooling chain MV UPS SYSTEM
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— © 2026 ABB. All rights reserved. Slide 19 ABB HiPerGuard Static Medium Voltage UPS Application • Data Center applications to power GW campus target high-density AI workloads from MV Source (Hyperscale) • Industry heavy industrial plants with high power demand Benefits • Industry's first static MV UPS designed for hyperscale data centers Modularity, N+3 internal redundant power converters • Scalability, hard parallel configuration (up 50 MW UPS system blocks) satisfying Gigawatts AI factories’ power demand • Provides CapEx & OpEx savings, 30% less footprint, 24x less copper and associated heat dissipation, supporting lower CO₂ emissions • Compatible with demand response, diesel generators, gas turbines, and aggressive AI load profiles • Class-1 performance with superior efficiency ensuring uninterrupted and clean power during grid disturbances • Full global grid code compliance with native ride-through readiness Did you know? Since 2016, ABB HiPerGuard MV UPS established a worldwide installed base in the datacenter and industrial application sectors. 01 MV POWERTRAINS
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— © 2026 ABB. All rights reserved. Slide 20 ABB Infinitus Solid State Transformer (SST) Application Benefits • Emerging technology that converts medium-voltage AC from source grid input into stable 800V DC output • Optional Energy Storage Systems (ESS) coupled block & row DC feed output protection providing a fully-integrated MV to DC packaged solution • Superior efficiency in compact footprint • Optimized for quick-deploy (Skid & eHouse integration) • MV/LV low-frequency transformer-less solution Did you know? The SST comprises of existing and proven reliable and robust ABB components and platforms, including existing factories and production know-how as well as our qualified suppliers from Traction and MV Drives businesses. 02 SOURCES & POWER QUALITY Compute Row(s) Compute Row(s) 800 VDC SST DC RBS MV SWG/RMU Specifications for products marked as “Under Development” may change without notice. Native 800 V DC datacenter high power and superior efficiency applications to power GW campus, target high-density AI workloads from MV AC Source
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— © 2026 ABB. All rights reserved. Slide 21 ABB Infinitus Solid State Circuit Breaker (SSCB) Application • Infinitus SSCB with two new frames of 250 A and 500 A developed specifically for critical loads in DC applications • Infinitus SSCB provides unparallel rack protection eliminating needs for OR- ing diodes and hold-up capacitors in the IT rack • Available on UL489I and IEC 60947-10 Benefits • Power electronic section that provides ultra-fast short-circuit detection and interruption. Electromechanical switch that provides galvanic isolation and can switch load currents • Compact design with air cooling • Settable tripping thresholds • Both poles protected → full handling of IT-grounded systems • Ultra-fast detection mechanism enables high di/dt handling and fast response protection for first Native DC racks Did you know? Originally developed to comply with ODCA and Current/OS standard the circuit breaker offers full short-circuit protection and isolation in both poles, making it the ideal solution for IT LVDC systems. 04 POWER PROTECTION Specifications for products marked as “Under Development” may change without notice. DC BUSWAY 800 VDC Racks TAP-OFF Box
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— © 2026 ABB. All rights reserved. Slide 22 Leading the DC power transformation ABB’s Infinitus DC Portfolio for Data Centers — Data Center CapEx spend shifting to grey space, where ABB has its main exposure Infinitus DC portfolio production within existing ABB CapEx level 1 Market-first source-to-rack DC portfolio for new DC Data Center architectures, positioning ABB as the industry leader in enabling next-generation Data Centers 2 In 2027, main critical building blocks in place across today’s transitional hybrid and target architectures 3 Capture opportunities across the entire market and all geographies, regardless of customers’ chosen pace of adoption OUR PORTFOL I O Flexible portfolio to support customers across multiple architectures & time horizons Supportive to ABB Electrification Op. EBITA margin target of 22% - 26%