Flex-Plant Combined Cycles: A Look at Non-Renewable Generation on Grids with Increasing Renewable Resources

Flex-Plant Combined Cycles: A Look at Non-Renewable Generation on Grids with Increasing Renewable Resources Siemens, 2016. All Rights Reserved siemens.com/energy

Electricity can not be stored. It has to be made right when you use it Page 2

Energy can be stored And made into electricity when you need it Page 3

Some types of generation can t always be used when you need them Transient generation needs a dispatchable partner to enable a reliable grid Page 4

There are Lots of Partnering Technology Options Batteries and Pumped Storage Dispatchable Natural Gas Trent 60 Aeroderivatives SCC-800 Flex- Plant Combined Cycle SST6-5000F Simple Cycle Flex-Plant Combined Cycle Page 5

Balancing green and green $ With the right technology, the environment and the bottom line are both winners Page 6

Power Generation on Grids without renewables Total Demand (based on CAISO Duck) Peaking Intermediate Base Load Dispatch Page 7

Power Generation on Grids with renewables CAISO Net Load 2012 through 2020 Peaking Simple cycle Before Renewables With Renewables The Duck renewable generation ~ 6000 hrs/yr ~7 GW Intermediate Moderate to High Dispatch Fluctuating Load Base Load Dispatch Economics & Environment Favors Combined Cycle The Duck Pond Non-renewable generation Constant Load Page 8

Conventional Combined Cycles were designed for Base Load Flex-Plants are Designed for Flexibility HRSG designed for Flexibility High-Capacity Attemperators ST Piping Warm-up Systems Siemens SST-5000 Steam Turbine Siemens Gas Turbine Integrated T3000 Control system with Startup & Shutdown Automation & Stress Control Solutions Flex-Plants are designed to be as fast and flexible as a simple cycle With the High Efficiency of a Combined Cycle Page 9

Plants Designed to Cycle Flexibility Features Built In Fully Air Cooled (E, F & H) Rotor Hirth Serrations Four stages of variable compressor vanes (F&H Class) Siemens patented HCO (H-Class) Conventional Operating Temperatures Gas Turbines Designed to Cycle Siemens latest portfolio of gas turbines has more than 2x the cycling life Page 10

SGT-8000H Hydraulic Clearance Optimization (HCO) CASING REDUCED TIP GAP TURBINE BLADE INITIAL TIP GAP AXIAL SHIFT HCO HCO on ~5 MW HCO off Siemens Patented Technology Simple, Fail-safe, Field Operated since 2004 Provides high Performance and high operational Flexibility and Low Degradation Page 11

Plants Designed to Cycle Steam Turbines Designed to Cycle Push rod arrangement for reduced axial clearances Siemens Flex-Plants use steam turbine stress controllers to enable the use of the full capability of the design without risking engine life Page 12

Plants Designed to Cycle Drum-type HRSG Drum NEM DrumPlus BENSON HRSG Separator Separator Exhaust Gas flow Drum Exhaust gas flow No thick wall components - fast start-up possible Improved superheater header design Superheater Evaporator NEM s Drum Plus design combines fast start capability with traditional drum boiler technology Superheater Evaporator Once-Through Benson and Drum-Plus HRSG designs allow > 30 MW/min load gradients Page 13

Siemens Co-Start Technology Fast Bottoming Cycle Start Up Co-Start uses an integrated hardware and control package which enables the steam turbine to ramp up early and quickly, while protecting equipment for reliable operation over the life of the plant. No low load gas turbine hold points Fast Ramp of the steam turbine Base load power in about 30 minutes Co-Start means lots of power fast Page 14

Reducing Operating Costs Saving Money with Co-Start Co-Start results in an Estimated Savings over $25,000,000 NPV Flex-Plants with Co-Start Offers Significant Savings to the Bottom Line Page 15

Siemens Clean-Ramp Technology Clean-Ramp enables unlimited dispatch on grid control by avoiding permit excursions during ramping Page 16

Plant Power DASH Fast Load Following for Flex-Plants with Supplemental Firing Ramps at GT Ramp Rate Ramp at ~3 MW/Min Plant Ramps at GT Ramp Rate Duct Firing Co-Start results in an Estimated Savings over $25,000,000 NPV Unfired Plant GT 100% and slow DF DASH Conventional Technology DASH opens up the possibility for new revenue streams Page 17

Siemens Flexible Combined Cycles With Fast Start Technology Lodi Energy Center 1x1 SCC6-5000F California USA, 2012 El Segundo 2x1x1 SCC6-5000F California USA, 2013 Siemens is the world leader in flexible combined cycles 21 Siemens fast start combined cycles are in commercial operation With over 300,000 operating hours and over 10,000 starts Page 18 Panda Temple 1 2x1 SCC6-5000F Texas USA, 2014 Panda Temple 2 2x1 SCC6-5000F Texas USA, 2015 Panda Sherman 2x1 SCC6-5000F Texas USA, 2014 Lordstown 2x1 SCC6-8000H Ohio USA, 2018 Oregon Clean Energy 2x1 SCC6-8000H Ohio USA, 2017 Panda Hummel 3x1 SCC6-5000F Pennsylvania USA, 2018 Pont Sur Sambre Single Shaft SCC5-4000F France, 2009 Toul Single Shaft SCC5-4000F France, 2012 Severn Single Shaft SCC5-4000F United Kingdom, 2010 Cottam Single Shaft SCC5-4000F United Kingdom, 1999 Pego 2 x Single Shaft SCC5-4000F Portugal, 2010, 2011 Sloe Centrale 2 x Single Shaft SCC5-4000F Netherlands, 2009 Enecogen 2 x Single Shaft SCC5-4000F Netherlands, 2011 Malzenice Single Shaft SCC5-4000F Slovakia, 2012 Gonyu Single Shaft SCC5-4000F Hungary, 2011 Fortuna Single Shaft SCC5-8000H Germany, 2016 Ulrich Hartmann (Irsching 4) Single Shaft SCC5-8000H Germany, 2011 Irsching 5 2x1 SCC5-4000F Germany, 2010 Knapsack Single Shaft SCC5-4000F Germany, 2013 Operating In Construction Danjin 3 Single Shaft SCC6-8000H South Korea, 2013 Andong Single Shaft SCC6-8000H South Korea, 2014 Daegu Single Shaft SCC6-8000H South Korea, 2014 Dangjin 4 2x1 SCC6-8000H South Korea, 2017 Jangmoon 2x2x1 SCC6-8000H South Korea, 2017 Wirye Single Shaft SCC6-8000H South Korea, 2017 Technology Intro Sites Co-Start Unrestricted GT Start DASH Clean-Ramp Steam-Assist

SGT6-5000F Robust and Mature Evolutionary 3D blading 4 stages of fast acting variable-pitch guide vanes (VGV) allowing for Fast cycling Emission Control and fuel flexibility Proven Ultra Low NOx (ULN) Combustion System High combined cycle efficiency Proven rotor design (Hirth serration, central tie rod, external rotor cooling) All rotating blade replaceable without rotor de-stack or lift Low firing temperature means low risk design with proven conventional turbine alloys for longer service interval and life External Rotor Air Cooling Performance features Flexibility features External Rotor Air Cooling allowing clearance optimization and all steel rotor construction Proven operational flexibility for responsive combined cycle applications Page 19

5000F Installations Around the World Supporting the Energy Demands from all 60 Hz Power Generation Markets with Reliable, Efficient and Flexible Power Plant Solutions 14 Canada 217 United States 10 South Korea 28 Mexico 4 Puerto Rico 40 Saudi Arabia 2 Philippines 6 Colombia 29 Venezuela 11 Peru 11 Brazil Page 20

SGT6-8000H Efficient & Flexible Evolutionary 3D blading 4 stages of fast acting variable-pitch guide vanes (VGV) allowing for improved part load efficiency and high load transients PCS Combustion System Advanced Can Annular combustion system > 60% combined cycle efficiency Proven rotor design (Hirth serration, central tie rod, internal cooling air passages) for world class fast (cold) start and hot restart capability 3D Four stage turbine with advanced materials and thermal barrier coating High cycling capability due to fully internally air cooled turbine section HCO for reduced clearance losses Transient protection of clearances for reduced degradation with hydraulic clearance optimization (HCO) active clearance control Performance features Flexibility features Designed for >60% efficiency in combined cycle and best in class operational flexibility Page 21

8000H Installations Around the World 2 2 2 2 Panda Liberty Pennsylvania, 07/2016 Panda Patriot Pennsylvania, 07/2016 Lordstown I Ohio, 2018 Oregon CEC Ohio, 2017 x Number of GTs 50Hz 60Hz 1 1 Irsching 4 Germany, 07/2011 Lausward Germany, 02/2016 1 1 2 Samsun Turkey, 01/2015 Bandirma II Turkey, 06/2016 Hamitabat Turkey, 2017 1 1 3 2 Dangjin 3 South Korea, 08/2013 Andong South Korea, 04/2014 POSCO Incheon South Korea, 07/2014 Ansan South Korea, 11/2014 4 2 1 3 3 3 Empalme I & II Mexico, 2017 Valle de Mexico II Mexico, 2017 Altamira Cogen Mexico, 2018 Cape Canaveral Florida, 04/2013 Riviera Florida, 03/2014 Port Everglades Florida, 04/2016 1 8 8 8 1 Plock Poland, 2017 Beni Suef Egypt, 2018 Burullus Egypt, 2018 New Capital Egypt, 2018 El Campesino Chile, 2018 2 4 Prai Malaysia, 02/2016 Pengerang Malaysia, 2017 1 2 2 4 1 1 Daegu South Korea, 12/2014 Moka City Japan, 2019 Dangjin 4 South Korea, 2017 Jangmoon South Korea, 2017 Wirye South Korea, 2017 San Gabriel Philippines, 2016 80 SGT-8000H have been sold (50Hz: 40; 60Hz: 40) 27 GTs are in commercial operation (50Hz: 6; 60Hz: 21) 295.000 Fired Hours have been achieved (50Hz: 34; 60Hz: 261) Page 22

Ulrich Hartmann 1S SCC5-8000H FLEX-PLANT Technology COMMERCIAL OPERATION: 2011 A High Efficiency Combined Cycle with the Flexibility of a Simple Cycle 500 MW in 30 min with no service penalty Fully air cooled gas turbine low start up emissions GHG generation <750#/MW-hr SCC5-8000H The first combined cycle in the world to exceed 60% net plant efficiency Proven 2011 Power Magazine Top Plant Page 23

Load Following Capability One of the most efficient combined cycles in the world dispatched for intermediate or peak load Plants in this high renewable market that can t do this are not operating at all. Page 24

Lodi Energy Center 1x1 SCC6-5000F FLEX-PLANT COMMERCIAL OPERATION: 2012 A High Efficiency Combined Cycle with the Flexibility of a Simple Cycle 200 MW in 30 min low start up emissions SCC6-5000F The first flexible combined cycle in the US Proven 2012 Power Magazine Top Plant Page 25

El Segundo 1x1 SCC6-5000F FLEX-PLANT Technology COMMERCIAL OPERATION: 2013 A small footprint, air cooled Flexible Combined Cycle with Clean-Ramp technology for low emission while ramping SCC6-5000F The first air cooled flexible combined cycle in the US Proven 2013 Power Engineering Project of the Year Runner Up 1st place Winner was Canaveral 3x1 powered by Siemens SGT6-8000H gas turbine Page 26

Panda Temple 2x1 SCC6-5000F FLEX-PLANT COMMERCIAL OPERATION: 2014 Panda Sherman 2x1 SCC6-5000F FLEX-PLANT COMMERCIAL OPERATION: 2014 Panda Power Funds April 2013 Siemens Flex-Plant TM Flexible reliable operation to support the changes of the wind Low load operation in compliance >200 MW in 30 minutes Load following with low emissions SCC6-5000F The first flexible combined cycles in the Texas Proven Each state-of-the-art plant will also utilize the latest, most advanced combustion turbine and emissions control technology, making them two of the cleanest, most efficient natural gas-fueled power plants in the United States. Page 27

Fortuna Single Shaft SCC5-8000H Combined Heat and Power COMMERCIAL OPERATION: 2016 A Flexible Combined Cycle Powered by the SGT5-8000H > 61 % net efficiency at >600 MW el. >300 MW th heat extraction leading to >85% fuel efficiency SCC5-8000H Proven World Record Breaking Performance Page 28

Siemens Power Plant Solutions Field proven technology Industry leading innovations Partnering for a greener future Future proof value generation for a changing market Page 29

Siemens A power plant Partner. practical plant Advantages Fast Additional Revenue Streams Smaller Environmental Footprints Higher Dispatch Lower Start-up Costs The global experience of Siemens Page 30

Contact page Mat Palmer Product Management 60Hz Solutions Energy F ES SGAM / Americas / PLMK 4400 Alafaya Trail Orlando, FL Phone: +1 407 736 7004 Mobile: +1 407 371 5820 E-mail: Mathew.Palmer@Siemens.com siemens.com/powerplants Page 31

Disclaimer This document contains forward-looking statements and information that is, statements related to future, not past, events. These statements may be identified either orally or in writing by words as expects, anticipates, intends, plans, believes, seeks, estimates, will or words of similar meaning. Such statements are based on our current expectations and certain assumptions, and are, therefore, subject to certain risks and uncertainties. A variety of factors, many of which are beyond Siemens control, affect its operations, performance, business strategy and results and could cause the actual results, performance or achievements of Siemens worldwide to be materially different from any future results, performance or achievements that may be expressed or implied by such forward-looking statements. For us, particular uncertainties arise, among others, from changes in general economic and business conditions, changes in currency exchange rates and interest rates, introduction of competing products or technologies by other companies, lack of acceptance of new products or services by customers targeted by Siemens worldwide, changes in business strategy and various other factors. More detailed information about certain of these factors is contained in Siemens filings with the SEC, which are available on the Siemens website, www.siemens.com and on the SEC s website, www.sec.gov. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those described in the relevant forward-looking statement as anticipated, believed, estimated, expected, intended, planned or projected. Siemens does not intend or assume any obligation to update or revise these forward-looking statements in light of developments which differ from those anticipated. Trademarks mentioned in this document are the property of Siemens AG, it's affiliates or their respective owners. Page 32