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HomeMy WebLinkAbout7, CEQA Public Hearings Agenda Item # 7 Electric System Master PlanDeclaration for theStudy and Mitigated Negative Public Hearing for CEQA Initial Electric System Master Plan 2 Presented to Board on December 3, 2014•CEQA Initial Study Prepared by Inland Ecosystems•Presented to Board on November 19, 2014•Performed by Electrical Consultants Inc. (ECI)•Study to plan for future infrastructure improvements•Electric System Master Plan performed earlier in 2014•Background / History CEQA Public Hearing New Information CEQA Public Hearing Electric System Master Plan 3 day period from December 3, 2014 to January 2, 2015-30•Public Hearing required during public comment period• Fiscal Impact CEQA Public Hearing Electric System Master Plan 4 No fiscal impact associated with this item• Recommendation CEQA Public Hearing Electric System Master Plan 5 Conduct the public hearing and receive comments• 6 CEQA Public Hearing Electric System Master Plan Electric System Master Plan Total Plan CostsImprovementsCriteriaHistorical TrendsLoad DataModel DevelopmentOVERVIEW 7 Electric System Master Plan service.manner that endeavors to increase the quality of configuration, voltage levels and load balance in a Evaluate the existing & projected system financial requirements for the next fifteen (15) years.date forecast possible of -to-Provide the most upeconomic manner possible.Plan & complete improvements in the most out construction & other needed improvements.Provide the District with an orderly plan for carrying Purpose of Electric System Master Plan 8 Electric System Master Plan Added substation equipmentVerified modelTDPUD provided model from GISModel 9 Electric System Master Plan Total 221 miles of primary conductor70 miles underground151 miles overhead conductorFour Substations and one point of receiptSystem Summary 10 Electric System Master PlanEffect of ongoing conservationJudgment of the District’s Staff and ECITown of Truckee General PlanStatistical analysis of historical monthly dataGrowth Projections 11 Electric System Master Plan Linear (Average Monthly Usage/Customer)Linear (Number of Consumers)Average Monthly Usage/CustomerNumber of Consumers CONNECTIONSRESIDENTIAL YearConsumerskWH 15,00014,00013,00012,00011,00010,0009,0008,000620600580560540520500480460 2x + 574-y = y = 188x + 9199 12 Electric System Master Plan Linear (Average Monthly Usage/Customer)Log. (Number of Consumers)Average Monthly Usage/CustomerNumber of Consumers( > 50 & < 200 KW)CONNECTIONS COMMERCIAL YearConsumerskWH 5550454035302525,00020,00015,00010,0005,0000 y = 68x + 208743ln(x) + 48-y = 13 Electric System Master Plan Linear (Average Monthly Usage/Customer)Log. (Number of Consumers)Average Monthly Usage/CustomerNumber of Consumers(> 200 KW)COMMERCIAL CONNECTIONS YearConsumerskWH 111098765432250,000200,000150,000100,00050,0000 7703x + 15619211-y = 309.2ln(x) + 2357.1-y = 14 Electric System Master Plan No projects recommended based on outagesRepairs and upgrades third major causeAnimals second major causePower Supplier number one cause15 Electric System Master Plan Historic TrendProj. KW TrendPeak ExtHist. KW kW TrendTRUCKEE DONNER SYSTEM TOTAL KW 45,000 40,000 35,000 30,000 25,000 20,000 15,000 10,000 5,000 -Total System kW Trend 16 Electric System Master Plan Approximately 1.7% growth rate9.5 MW of additional load at 15 year loading4.0 MW of additional load at 5 year loadingGrowth and Loading 17 Electric System Master Plan 80%–Other equipment loading 100%–Transformer loading 114V; 110V at the consumer–Contingency system voltage 118V; 114V at the consumer–Normal system voltage Evaluation Criteria 18 Electric System Master Plan Existing System 19 Electric System Master Plan 15 Year Loads–Existing System 20 Electric System Master Plan transformer overloadingConductor loading > 100% existing & future, –Truckee Conductor loading > 100% 15 yr–Martis Valley loads, conductor overloadingBelow voltage criteria existing and future –Donner Lake Contingency Summary 21 Electric System Master Plan Tahoe Donner 22 Electric System Master Plan Tahoe Donner 23 Electric System Master Plan Donner Lake 24 Electric System Master Plan Tahoe Donner 25 Electric System Master Plan Truckee 26 Electric System Master Plan Martis Valley 27 Electric System Master Plan 9,333,000$Total Costs$5,002,00015-Years 11 $1,136,00010-Years 6 $3,195,0005-Years 1 Total Cost Summary by Year 28