Andrew Etzinger Eskom IDM
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Andrew Etzinger Eskom IDM

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    Andrew Etzinger Eskom IDM Andrew Etzinger Eskom IDM Presentation Transcript

    • Cases On Energy EfficiencyFinancing ConferenceEnergy Efficiency Projects InIndustryAndrew EtzingerSenior General ManagerIntegrated Demand ManagementEskom
    • Opportunities to improve efficiency is typicallysought where electricity consumption is highestSource: as reported in the Eskom 2011 Integrated report)2012 USERS CONFERENCE | AFRICA 2Mining 18%Industry49%Commerce10%Transport2%Agriculture4%Residential17%Energy ConsumptionMining 14%Industry35%Commerce10%Transport2%Agriculture4%Residential35%Demand
    • Industrial Commercial /AgriculturalResidentialESCOPerformanceContractingStandard Offer / SOPFLEXStandard Product /Aggregated SPPResidential Mass Roll-outSWH / HP RebateOther Mass RolloutIDM solutions sector coverageIndustrial Process Optimisation, FansCompressed Air, Shower Heads, LightingProcess Optimisation, LightingHeat Pumps, HVAC etc.Lighting, Hot Water Systems,Solar , Process Optimisation, RenewablesLighting, Shower Heads,Industrial Heat PumpsHP & LP Solar WaterHeaters, Heat PumpsCFL Sustainability andFill-ins“Mixed bag” oftechnologies3Customised incentive programmes have been developed and implemented foreach market, based on unique market characteristics
    • The Integrated Demand Management programmepromotes efficient energy use across all sectorsand activities2013/06/124Efficient lightingWater heatingKitchen appliancesHousehold appliancesPool pumpsPower AlertEfficient lightingWater heatingHeating, ventilation,Air conditioning(HVAC)Efficient motorsBuilding ManagementSystemsData centresPumpingProcess optimsationCompressed airEfficiency motors andvariable speed drivesHVACEfficient lightingDemand response
    • 5Supplier Development and Localisation(SD&L)Increasing the skill base (number and skill level) of SouthAfrican workers in areas relevant to the energy sector andwhere there is a national scarcity of skillsUtilisation of Eskom and suppliers’ spend to develop SouthAfrican based suppliers relevant to the energy sector (focusingprimarily on BBB-EE Black Owned and youth owned suppliers)Utilisation of Eskom and suppliers’ spend to foster theestablishment of new competitive industries in the energysectorCreation of new jobs by suppliers as a direct result of EskombusinessProviding a platform to develop emerging suppliers, and furthercontribution to local developmental opportunities for nationaland international suppliersSkillsDevelopmentLocal contentIndustrialisationEmploymentand job creationSupplierDevelopment5
    • Since inception in 2004, the IDM programme hasestablished capacity (negawatts) equivalent to thatof an average power station2013/06/12 6050010001500200025003000350040002004/05 2005/06 2006/07 2007/08 2008/09 2009/10 2010/11 2011/12 2012/13Cumulative Demand Savings (MW)2012/131 Power Station(6 x 600MW units)2009/104 Units2007/08~2 units2004/0510% unit
    • Breakdown of savings since inceptionBy IDM SectorSince inception of IDM – 2,714MW (76%) of the savings verified havecome from the Residential sectorResidential &Munics2,714MW76%Industrial &Mining625MW17%Commercial228MW6%Agriculture21MW1%
    • Breakdown of savings for 2013 financial yearBy IDM SectorWhilst the Residential sector still contributed the majority of demandsavings (376MW – 64%) for the 2013 financial year, the Commercial sectoris making a bigger contribution (103MW -17%)Residential &Munics376MW64%Industrial &Mining105MW18%Commercial103MW17%Agriculture7MW1%
    • Savings from the Commercial sector have increased significantly in the 2013 financialyear due to the funding mechanism introduced in the past 2 years to stimulate thismarketPast 3 years - contribution to demand savingsBy IDM Sector0100200300400Residential & Munics Industrial & Mining Commercial AgriculturePeakDemandSavings(MW)FY 2011 FY 2012 FY 2013
    • Breakdown of savings for 2013 financial yearBy IDM Funding MechanismResidential Mass Rollout was the largest contributor to IDM’s demandsavings (178MW) in the 2013 financial yearResidential MassRollout178MW30%Mass Roll Out171MW29%ESCo Model107MW18%PerformanceContracting85MW15%Std Rebate26MW4%Standard Product15MW3%Standard Offer8MW1%DoE SWHProgramme1MW0%
    • Standard Offer UptakeProject Registrations413 21324168991442002450200400600800060120180240300 Q2Q3Q1Q2Q3Q4Q1Q2Q3Q4FY 2011 FY 2012 FY 2013Demand(MW)&Enregy(GWh)SavingsNo.ofprojectsNo. Of Projects Demand Savings (MW) Energy Savings (GWh)YTD FY 2013 177 projects registered - demand savings = 88.4MW & energy savings = 344GWhSince inception (Oct 2011) 245 projects registered - demand savings = 118.1MW & energy savings = 478.6GWh
    • Standard Product UptakeProject Registrations2 36228516926170129623953488301002003004005006000100020003000400050006000Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4FY 2011 FY 2012 FY 2013Demand(MW)&Energy(GWh)SavingsNo.ofprojectsNo. Of Projects Contracted MW Calc Annualised Energy Savings (GWh)YTD FY 2013 3957 projects registered - demand savings = 97.4MW & energy savings = 442.2GWhSince inception (Jan 2012) 4883 projects registered - demand savings = 122.7MW & energy savings = 555GWh
    • Regulatory Issues : MYPD313• NERSA determined on the Eskom IDM submission for MYPD3– NERSA approved R5,183m of the R13,090m Eskom requested– IDM needs to deliver 89% of the submitted GWh energy savings target, with only40% of the applied for funding allowed– The benchmark rate reduced from R5.25m/MW to R3.52m/MW (R7.57m/MWapplied for)– Technologies such as Solar Water Heating and Heat Pumps were not supported– Focus on the large customer market reduced due to their ability to self-fund• Eskom will continue to engage NERSA on:– Proportionality of reduction in rebate rates and savings targets– Strategic approach to ensuring a sustainable energy efficiency market– Decision implications to the ability to support Security of Supply– Reasoning and implications of categorising savings per technology and theexclusion of certain markets and technologies– Continuity of the Small Scale Renewables Programme
    • Future Focus Areas• Secure the funding requirements for the base IDM plan as well as the RMR projectto ensure IDM supports security of supply.• Find way to optimise funding of IDM to increase MW yield per investment –collaborative effort with banks and financial institutions.• Engage stakeholders to clarify role of Eskom in IDM, specifically during the systemconstrained period, as a key lever to keep the lights on.• Develop internal processes and capacity to effectively deliver on the Residential MassRoll-out programme.• Sign up the top 500 customers for incentivised demand response.• Implement the government funded Solar Water Heating programme– optimise theinterface with DoE, specifically relating to the identification and prioritisation of projects.• Develop automated processes and systems for IDM solutions to enhance auditabilityand controls.• Expedite mobilisation of the Internal Energy Efficiency Programme to ensure timeousdelivery in 2013/14.
    • Industrial Projects: Case studies15
    •  Chilled water is needed to cool underground workingenvironment through Bulk Air Coolers (BAC) andunderground process water. Cooling systems include auxiliaries equipment such as:i) pre-cooling pumps, fans, motors,ii) evaporator pumps, motors,iii) condenser pumps, fans, motors andiv) BAC pumps, fans, motors, etc. A Real-time Energy Management System for CoolingAuxiliaries, simulate, optimise and control the complexnetwork of cooling system auxiliaries to match coolingdemand. Optimised control of cooling auxiliaries = reduction inwasted cooling energy = electrical power saving.1. Energy Efficiency on Cooling Auxiliaries(CA)16
    • Case study 1: Kopanang-CA Project17• Project successfully completed• 12 month implementation period• Average Weekday Impact (average savings over 24hour period)= 3.126 MW
    • 2.Energy Efficiency Water Supply Optimisation(WSO) Mines uses water for cooling, drilling, cleaning, etc. Intricate underground water reticulation networks supply the working levels. A Real-time Energy Management System for Water Supply Optimisation, control valvesto reduce water demand. Optimised control of water demand = less water used = less pumping = electrical powersaving.18
    • Case study 2: Kusasalethu-WSO project• Project successfully completed• 12 month implementation period• Average Weekday Impact ( averagesavings over 24 hour period)= 3.152 MW19
    • 3: Peak Clipping: Production Line Optimisation Elements of a Cement Production Line include: Real-time Energy Systems for Production Lines, simulate, optimise and controlthis complex production line process. Optimised control of a production line = minimum electricity costs = maximum loadreduction.20
    • Case study 3: Ulco -Production Line Optimisation(Peak Clip)• Project successfully completed• 14 month implementation period• Evening Peak demand reduction = 2.7MW21
    •  Load reduction will be achieved by simulating andpredicting demand, combined with automatic controlof compressors, compressor blow off valves,compressor guide vanes and other compressorcomponents and equipment. This is done whilemaintaining necessary air flows and pressures. A Real-time Energy Management for Optimised AirNetworks will account for all constraints such asmaintenance schedules, equipment limits, equipmentavailability, production needs, safety, health, etc. The system monitors, simulates, optimises andcontrols all equipment of the compressed air supplyand demand system.4: Energy Efficiency :Optimisation of Air Networks22
    • Case study 4: Rustenburg Platinum Mine: OAN• Project successfully completed• 12 month implementation period• Average Weekday Impact ( average savings over24 hour period)= 1.508 MW23
    • 5. Energy Efficiency: Composite Fibre Fans• The fan is manufactured making use of various materials ranging fromwhite cast irons to glass fibre.• Depending on the environment, the combinations of materials used maybe varied to suit the environment in which it will operate.• Some of the characteristics of the fan beside energy efficiency include:-Light weight and stronger than steel fans.-Increased total “Jet Throw” while maintaining the same air flow rateand pressure.(“Jet Throw” - distance from physical fan to end point).
    • 5. Savings- Composite Fans10.0020.0030.0040.0050.0060.0070.0080.0010.0015.0020.0025.0030.0035.0040.0045.0050.005.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00Efficiency%SHAFTPOWER(kW)VOLUME FLOW m^3/sSteel 45 kW Axial Fan Vs Composite Axial FanComposite Fan PowerSteel Fan PowerComposiite Fiber Fan EffSteel Axial Fan EffABThe Best Efficiency Point (BEP) of the existing fans was used as the baseline.At the BEP point : Steel fans power (Point A) = 48.1 kW/fanComposite fans power (Point B) = 31.1 kW/fanPower savings = 17 kW/fan25
    • Name Number of Fans Savings Status of Project1. Goldfields – Kloof Mine 460 6.21 MW Implementation2. Goldfields – Driefontein Mine 290 3.915 MW Implementation3. Goldfields – Beatrix Mine 122 1.647 MW Implementation4. Anglo Platinum – Union Section Mine 36 0.486 MW Implementation5. Harmony Gold – Kusasalethu Mine 140 1.89 MW Implementation6. Lonmin Platinum 290 3.915 MW ImplementationCase study 5: Energy Efficiency CompositeFibre Fans• *Projects are in implementation• Contracted total = 18.04 MW26
    • • Main Fan stations is one of the largest energy consumers on a mine.• Power Consumption can be reduced by controlling the Inlet Guide Vane.• Absorbed Power can be reduced by 30 % during peak Eskom DemandPeriods without affecting the underground working significantly.6.Peak Clip: Inlet Guide Vane Control27
    • Case study 6: Beatrix # 4 Main Fan Control(Peak Clip)• The selected main surface fan station at the Beatrix #4 Shaft located on surfaceand used to provide primary ventilation to the extensive workings.• The unloading of the fans have been achieved by using inlet pre-rotation guide-vane controls.• The selected main surface fan station at Beatrix No 4 Shaft has 5.4 MWE ratedoperating capacity, with a total absorbed power of 4.1 MWE.• Project has been successfully completed.• Evening Peak Reduction =1.1MW28
    • Thank youPradesh MewalalaIndustrial Sector Manager011 800 5843