Renewable energy transmission [CSTP 2009]

454 views

Published on

Rich Ferguson, RETI Coordinator, CEERT

Published in: Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
454
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
0
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Renewable energy transmission [CSTP 2009]

  1. 1. RETI &California Solar Development Rich Ferguson, PhD Research Director, CEERT June 4, 2009
  2. 2. Transmission Policy Decisions• A very brief description of RETI – California’s Renewable Energy Transmission Initiative. – http://www.energy.ca.gov/reti/index.html• Good policy decisions need a good quantitative foundation. – Historical example – banning atmospheric nuclear testing. RETI & Solar Development 2
  3. 3. Conceptual Transmission Planning• Characterize renewable resource areas;• Identify potential network additions to existing system likely needed to access resource areas and deliver energy to load centers;• Identify potential environmental conflicts;• Modify proposed additions;• Assess renewable and environmental attributes of proposed additions quantitatively. RETI & Solar Development 3
  4. 4. Assessment Flow Chart RETI & Solar Development 4
  5. 5. Renewable Net Short Total Retail RPS Retail Net Short Sales (2020) Sales 2008 2020 LSE Name (GWh) (GWh) (GWh)SMUD 2,084Other TANC 2,000PG&E 93,627 9,774 21,123PG&E Direct Access 6,814 ??? 2,249SCE 99,142 12,573 20,144SCE Direct Access 9,405 ??? 3,104LADWP 27,776 1,968 7,754IID 4,216 671 720Other SCCPA 9,969 498 2,791SDG&E 21,113 1,047 5,920SDG&E Direct Access 3,113 ??? 1,027 Totals 68,916 RETI & Solar Development 5
  6. 6. Sample of Shift Factor Matrix INYK_KRAM_1 IRMT_SCEJ_1 IRMT_SCEJ_2 JULH_DESC_1Owens Valley 0.6588 0.0058 0.0058 -0.0006Palm Springs 0.0002 -0.0261 -0.0261 -0.0016Pisgah 0.0000 0.0142 0.0142 -0.0021Riverside East 0.0003 -0.0636 -0.0636 -0.0262Round Mountain-A -0.0013 0.0046 0.0046 0.0000Round Mountain-B -0.0013 0.0046 0.0046 0.0000San Bernardino - Baker 0.0006 0.0045 0.0045 0.0008San Bernardino - Lucerne 0.0000 0.0106 0.0106 -0.0015 RETI & Solar Development 6
  7. 7. Sample CREZ Data Phase 2A Capacity (MW) updated 3/27 CREZ Name Biomass Geoth. Solar Th. Wind TotalBaja 0 0 0 2,368 2,368Barstow 0 0 1,400 936 2,336British Columbia 0 90 0 250 340Carrizo North 0 0 1,600 0 1,600Carrizo South 0 0 3,000 0 3,000Cuyama 0 0 400 0 400Fairmont 138 0 2,000 1,380 3,518Imperial East 0 0 1,600 123 1,723Imperial North-A 0 1,370 0 0 1,370Imperial North-B 30 0 1,800 0 1,830Imperial South 36 64 3,150 45 3,295Inyokern 0 0 2,145 287 2,432Iron Mountain 0 0 5,600 62 5,662Kramer 0 24 6,185 203 6,412 RETI & Solar Development 7
  8. 8. CREZ Data RETI & Solar Development 8
  9. 9. Line Segment Assessment• Criterion A – Total Energy Score• SegmentScore(j) = SUM [ShiftFactor(j,k) × TotalEnergy(k)]•• In which:• SegmentScore(j) is the jth line segment in the plan;• ShiftFactor(j,k) is the absolute value of the shift factor for segment(j) and CREZ(k);• TotalEnergy(k) is the total energy potential of CREZ(k)• SUM indicates that the all of the results of the multiplication are to be added together.•• Similarly:•• Criterion B1 – Energy Weighted by Adjusted Economic Score• SegmentScore(j) = SUM [ShiftFactor(j,k) × TotalEnergy(k) × AdjEconScore(k)]•• Criterion B1 – Energy Weighted by Adjusted Environmental Score• SegmentScore(j) = SUM [ShiftFactor(j,k) × TotalEnergy(k) × AdjEnviroScore(k)]•• Criterion C – Energy of Commercial Interest Score• SegmentScore(j) = SUM [ShiftFactor(j,k) × CommIntEnergy(k)] RETI & Solar Development 9
  10. 10. Draft Line Segment Results CREZ CREZ Combined Combined ABS Cutoff Energy CREZ CREZ Commercial CREZ CREZ Shift Shift Score Econ Enviro Interest Energy EnergySegment Factors Factors (GWh) Score Score Score (GWh) Factor ScoreALPH4_ALPH1_1 0.07 0 423 12089 6754 305 1.03 435ALPH4_ALPH1_2 0.07 0 423 12089 6754 305 1.03 435ALPH4_PARK_1 0.08 0 579 17016 9295 405 1.02 593ALPH4_PARK_2 0.08 0 579 17016 9295 405 1.02 593ANTE_VINC_1 0.73 4 11845 429720 204451 12927 1.27 15,096AV58_CHCV_1 0.20 0 1143 34389 18020 902 1.07 1,223BAKR1_BARS1_1 0.90 3 6083 139217 98432 3380 0.92 5,569BANN_AV58_1 0.17 0 893 27594 14249 670 1.06 945BANN_CHCV_1 0.21 0 1151 35869 18290 870 1.06 1,221BANN_DEVR_1 3.22 10 19623 589513 317690 14261 1.04 20,472BANN_ELCN_1 0.16 1 1006 24547 15781 870 1.07 1,082BANN_GEO_1 0.59 2 4290 140224 74928 1146 0.84 3,604BANN_GEO_2 0.59 2 4290 140224 74928 1146 0.84 3,604BARS1_LUGO_1 1.32 4 8570 187857 132070 3628 0.84 7,157 RETI & Solar Development 10
  11. 11. Line Segment Groups Group CREZ AccessedFoundation allTehachapi Tehachapi, FairmontImperial Imperial North A&B; Imperial South; Imperial East; BajaIronMt Iron Mountain; Pisgah; NeedlesBarrenRidge Inyokern, Kramer, Tehachapi, FairmontDelivery allPisgah Pisgah; Iron Mtn; SB LucerneMtPass S. Nevada, Mtn Pass, Baker, BarstowRiverside Riverside East; Palm Springs; 29 PalmsNorthEast Round Mtn A&B; Lassen N&S; N. NevadaLEAPSInyo Central Nevada, Inyokern, KramerNorth British Columbia, Oregon, Round MtnCarrizo Carrizo North, Carrizo South, Cuyama RETI & Solar Development 11
  12. 12. Segment Environmental Scores Criterion D – Energy Access Relative to Environmental Concern Segment Rating Score = Combined Energy Access Score ÷ Environmental Score Environmental Score = EnvFactor × LenVal × ROW_Val ×CharVal Where: EnvFactor = Value assigned for each type of right of way associated with the linesegment. LenVal = Value assigned to section according to segment length. ROW_Val = Value assigned to the segment’s right of way category. CharVal = Value assigned to the segment’s construction category. RETI & Solar Development 12
  13. 13. Caveats and Limitations• Assessment results are preliminary and subject to change.• Only renewable energy and environmental attributes have been assessed.• Best available data changes with time – CREZ development potential • BLM decisions – Environmental concerns – Cost estimation – Uncertainty RETI & Solar Development 13
  14. 14. Caveats and Limitations – cont.• Assessment results are preliminary and subject to change.• Conceptual plan configuration changes with time – Power flow studies • Limitations of shift factor analysis – Scenarios RETI & Solar Development 14
  15. 15. Caveats and Limitations – cont.• Assessment results are preliminary and subject to change.• Assessment methodology can be improved – Simple summation of line segment energy information to provide group information can be improved.• Scenarios must be examined. RETI & Solar Development 15
  16. 16. CREZ Draft Group Scores CREZ CREZ CREZ Combined Group Group Energy Econ Enviro CommInt CREZ Energy Enviro Cost Group Name (GWh) Score Score (GWh) (GWh) Score ($Million)Foundation 51,190 1,515,622 812,237 130,424 52,759 1119 $3,481Tehachapi 27,838 864,591 455,880 84,221 30,947 97 $728Imperial 21,819 663,634 358,435 52,045 22,219 837 $1,311Delivery 12,308 377,683 197,609 32,482 12,945 739 $1,075IronMt 11,960 258,344 195,551 24,061 10,928 131 $832Riverside 9,134 224,815 152,990 19,881 8,756 419 $1,081Pisgah 8,473 196,096 133,922 21,602 8,411 396 $588MtPass 7,730 173,215 123,731 14,229 6,885 252 $798NorthEast 3,782 102,595 54,507 18,647 5,055 600 $735LEAPS 4,625 131,975 73,114 11,912 4,753 246 $162BarrenRidge 3,800 133,489 64,867 13,454 4,618 77 $208North 3,410 135,942 52,773 7,495 3,536 401 $3,898Inyo 3,686 127,854 59,346 2,031 2,880 88 $656Carrizo 2,600 52,692 39,904 5,391 2,351 20 $78Median Value 8,102 184,655 128,827 19,264 7,648 324 $766 RETI & Solar Development 16
  17. 17. Draft Group Scores Group Combined Group Group CREZ Energy Enviro Cost Group (GWh) Group Score Group ($Million)Tehachapi 30,947 Carrizo 20 Carrizo $78Imperial 22,219 BarrenRidge 77 LEAPS $162IronMt 10,928 Inyo 88 BarrenRidge $208Riverside 8,756 Tehachapi 97 Pisgah $588Pisgah 8,411 IronMt 131 Inyo $656MtPass 6,885 LEAPS 246 Tehachapi $728NorthEast 5,055 MtPass 252 NorthEast $735LEAPS 4,753 Pisgah 396 MtPass $798BarrenRidge 4,618 North 401 IronMt $832North 3,536 Riverside 419 Riverside $1,081Inyo 2,880 NorthEast 600 Imperial $1,311Carrizo 2,351 Imperial 837 North $3,898 Median 5,970 Median 249 Median $731 RETI & Solar Development 17
  18. 18. RETI & Solar Development 18
  19. 19. RETI & Solar Development 19
  20. 20. RETI & Solar Development 20
  21. 21. If You Don’t Like the Results…• Improve ? – Configuration – Line segment data – CREZ data – Environmental data – Cost data – Assessment methodology RETI & Solar Development 21
  22. 22. Conclusions• Solar development depends on transmission decisions.• Conceptual plan and assessment results provide a quantitative foundation for these decisions.• RETI stakeholder participation is open to all. RETI & Solar Development 22

×