First Experience with - PowerPoint Presentation

1. First Experience with Advanced Power-to-GasIGU “Transmission Committee”, 4th Meeting in Lima, PeruPlenary Session on 7th March 2017by Ansgar Brauer for Uniper Energy Storage GmbH

2. What is Power to Gas?Converting electricity into hydrogen (H2) via electrolysis of water, and in a subsequent step the H2 into methane via methanation. 2Electrolysis:The breaking down of water into its components hydrogen and oxygen using energy, in this case electricity from renewable energy. Methanation:The hydrogen can be allowed to react with CO2 to produce methane. A sustainable source of CO2 could be biomethane plants.

3. Power-to-Gas supports the integration of renewable energy and connects markets31 The Guarantee of Origin (GoO) for green electricity is an instrument defined in European legislation, that labels electricity from renewable sources to provide information to electricity customers on the source of their energy.2 A corresponding GoO-system for hydrogen is under development in the EU-project CertifHy. In Germany a certificate for hydrogen as biogas is already in use.3 SNG = Synthetic Natural GasGoO green hydrogen2GoO greenelectricity1Power-to-GasBiogenic CO2Natural gas gridHydrogen networkDirect useRenewable hydrogen (H2)Natural gas & „green“ gasMobilityHeatingElectricityIndustryPowerH2BiogasSNG3H2Methanation

4. Currently more than 25 PtG projects in Germany 4Source: https://www.dvgw.de/medien/dvgw/gas/umwelt/p2g-anlagen_oktober_2015.pdf

5. Example: Project „WindGas Falkenhagen“5

6. Example: Project „WindGas Falkenhagen“ – Phase 16Power: 2 MWelHydrogen Production: 360 Nm³/hTechnology: Alkaline electrolysisMax 2% hydrogen fed into the local gas grid of ONTRAS GastransportStart of Construction: August 2012;Start of Operation: August 2013Project Phase 1: until December 2016Owner: Uniper Energy Storage GmbH (UES)Key ParametersDemonstration of the process chainOptimization of operational concept (fluctuating wind power / gas feed)Gain experience in technology, costs, permit, tradingGoalsCo-operation partner

7. Technical experience “WindGas Falkenhagen”3 years of operation very successful.More than 8 GWh hydrogen (“WindGas”) have been produced from renewable electrical power and injected in the natural gas grid.More than 10,000 operating hours with more than 800 starts and stops.The efficiency is better than expected.No PtG-specific shutdown of the plant have been detected during operation. Degradation was not detectable. Using Pressure Electrolysers instead of Alkaline have a cost reducing potential if compressors can be avoided. Successful prequalification to participate on German secondary balancing market.7The technology is ready for the market and has further potential in performance and costs reduction.

8. Methanation in Falkenhagen – Project Phase 28Horizon 2020 funding (EU)Consortium: 27 partners from 6 European countries3 locations: Falkenhagen (Germany), Solothurn (Switzerland), Troia (Italy)Duration: 48 monthsKey ParametersRenewable hydrogen: 210 m³/h(from exististing PtG plant)Biogenic CO2: 52,5 m³/h (external supply)SNG1 production: 57 m³/h (catalytic)Injection of SNG into natural gas grid (ONTRAS)Start of operation: December 2017Project Phase 2: until 2020GoalsTesting new methanation technologiesGain experience: technology, operation and permittingAssessment of economic and business aspects and analyze the large-scale storage and market-uptake potential of the technology1 SNG = Synthetic Natural Gas

9. Dynamics is important9Double hump curve for pre-qualificationfor the German secondary balancing market

10. Example: Projekt „WindGas Hamburg“10Photo credits: Gregor Szielasko

11. Example: Project „WindGas Hamburg“11Public funding from BMVIPower: 1,5 MWel (stack)Hydrogen production: 290 m³/hFed into the local gas gridStart of operation: October 2015Public funding from BMVI (German Ministry of Transport)Key ParametersSubsidy & PartnerUtilization of high efficient"Proton Exchange Membrane" electrolysis (PEM)Demonstration within Uniper infrastructureBusiness developmentGoals

12. Breakthrough in stack power density12140 cm49 cm50 cm90 cm70 cmAlkaline electrolysis 2 MWelPEM electrolysis 1,5 MWelSource: Hydrogenics GmbH

13. Technical Experiences from WindGas HamburgSuccessful upscaling of PEM-technology to MW rangeThe new PEM-Technology is very compact and efficientBecause of high pressure (25 bar) of electrolysis, no compressor is necessary for injection of the hydrogen into the natural gas gridThe maximum power uptake of the PEM-stack (1,5 MWel) is 50% higher than initially planned13

14. First Power-to-Gas products tested on the market14Customer segment WholesalerRegional focusSwitzerlandComposition100% WindGasApplicationSustainable gas for heating, cooking & industryCustomer segmentEnd-customerRegional focusCzech RepublicCompositionWindGas share in E.ON Czech CNG portfolioApplicationSustainable gas for CNG mobilityCustomer segmentEnd-customerRegional focusGermanyComposition 10% WindGas, 90% natural gasApplicationSustainable gas for heating & cooking

15. No binding EU standard regarding H2 content in natural gas – German Standards deal with PtGDVGW* Standard G 262 (2011-09): Use of Gases from Renewables Sources in Public Gas Supply SystemsDVGW Code of Practice G 265-3 (2014-05): Facilities for Processing and Injection of Hydrogen in Gas Supply Systems; Design, Fabrication, Installation, Inspection, Commissioning and Operation „Falkenhagen“ Code of Practice15*) In Germany “DVGW – Deutscher Verein des Gas- und Wasserfaches e.V.” (German Technical and Scientific Association for Gas and Water) is the competence network for all questions related to gas and water supply.Natural Gas PipelineHydro-gen pro-duction plantHydro-gen in-jection plantFacilities for injection of hydrogenArea of Application for DVGW G 265-3 (M) Hydrogen lineHydrogen line

16. DVGW G 262 limits the H2 content for special cases Hydrogen content < 10 % vol. generally seen as not critical in natural gas, however prevailing gas quality standards (e.g. DVGW G 260) have to be met.Exemptions from this rule:CNG cars: Max 2% vol. acc. to DIN 51624 due to steel made CNG tanks.Gas turbines: Max 1 to 5% vol. depending on supplier. Gas turbines with low-emission premix burners can react sensitive on hydrogen.Process gas chromatographs are sometimes not able to analyse the hydrogen included in the natural gas stream. (Note: New PGC can handle up to 15% vol.)Aquifer storages: Max 5% vol. Hydrogen is a decent substrate for sulphate reducing bacteria depending on the biology of the underground storage. This can cause H2S production („sour gas“).16

17. Power to Gas – Key SummaryTechnicaladvantagesIntegration of renewable power sources into energy systems and diverse market entriesConverting electricity into hydrogen, and in a subsequent step the H2 into methane, allows large quantities of energy to be stored even over longer periodsThe use of already existing natural gas infrastructure as a transmission and storage mediumPositive ImpactsRenewable sources will be better exploited with Power to Gas and brought to different market sectorsFlexibility and ability to store the energy contributes to a more stable energy systemGas production from renewable energies reduces CO2 emissionsLarge, flexible gas storage capacities are available for electricity storage and can be used economically advantageous17

18. 18Thank you very much for your kind attention!

19. Thank you for your attention!If you need any further information, please contact us:Uniper Energy Storage GmbHRurhallee 8045136 Essenwww.uniper-energy-storage.comRené SchoofHead of Surface Technology Storagesrene.schoof@uniper.energyDisclaimer:This presentation may contain forward-looking statements based on current assumptions and forecasts made by Uniper Energy Storage GmbH (UES) and other information currently available to Uniper. Various known and unknown risks, uncertainties and other factors could lead to material differences between the actual future results, financial situation, development or performance of the company and the estimates given here. UES does not intend, and does not assume any liability whatsoever, to update these forward-looking statements or to conform them to future events or developments.