The URL can be used to link to this page

Home My WebLink About09.c. Receive summary of 2020 energy usage Page 1 of 7 Item 9.c. CENTRALSAN jdf A- hom CENTRAL CONTRA COSTA SANITARY DISTRICT March 4, 2021 TO: HONORABLE BOARD OF DIRECTORS FROM: CLINT SHIMA, SENIOR ENGINEER REVIEWED BY: NEIL MEYER, PLANT MAINTENANCE DIVISION MANAGER STEVE MCDONALD, DIRECTOR OF OPERATIONS ROGER S. BAILEY, GENERAL MANAGER SUBJECT: RECEIVE SUMMARY OF 2020 ENERGY USAGE Senior Engineer Clint Shima will present a summary of Central San's 2020 energy usage. The presentation will include the following: • Treatment Plant Usage - 2019 versus 2020 • MCE Impact • Monthly Usage Statistics • General Energy Information • Solar Panels Strategic Plan re-In GOAL TWO: Environmental Stewardship Strategy 4- Reduce reliance on non-renewable energy GOAL SIX: Innovation and Optimization Strategy 2—Improve and modernize operations through technology and efficiency measures ATTACHMENTS: 1. December 2020 Energy Usage 2. Presentation March 4, 2021 Regular Board Meeting Agenda Packet- Page 108 of 131 CCCSD December 2020 Energy Usage HHWCF(Solar) Treatment Plant Monthly Total Energy Cost: $306,546 HHWCF(Gas and $269 86%of Total$ Electricity)$206 0% 0% $294 /MG Treated POD Reserv.&Serv. Charges(PG&E) POD Demand Charge Misc(Gas and $25,035 10% Electricity) $2,122 (MCE)$- 0% 1,966 kWh/MG Treated 1% POD Electricity Import(MCE) CSO Facility $9,679 4% PG&E Charges csosolar, 2%of Total$ trans.+dist.+etc. $2,261,40% CSO Gas, mus Reserv.& $2,242,39% Serv.Charges) $15,428 CSO Electricity, 6% $39,1% 7:ave 2 of 7 CSO Vehicle icle Bay Electricity, Bay Gas,$448 $680,12% ,8% POD Natural Gas POD Landfill Gas $114,487 43% $34,537 Pump Stations 13% San Ramon,$9,519, 12%of Total$ 25% Moraga,$8,272, 22% 12 Other Pump Stations, O $1,629,4% Transmission Concord Industrial, $1,027,3% Orinda Crossroads, $7,278,19% Fairview Lift Station, $1,585,4% Lower Orinda, $4,213,11% Maltby, $1,666,4% Martinez,$2,854,8% Operating Cost of CCCSD by Month TP Electricity Source in kWh TP MMBTU of Gas Consumed $400,000 2,500 50 $350,000 $334,137 $339,291 45 671 $306,544 2,000 40 $300,000 3 m 35 $250,000 v 1,500 30 $200,000 n 25 o r 1,000 s 20 $150,000 15 $100,000 500 10 $50,000 5 $0 0 0 Sep-20 Oct-20 Nov-20 Dec-20 Sep-20 Oct-20 Nov-20 Dec-20 Sep-20 Oct-20 Nov-20 Dec-20 ■PG&E Charges ■POD Reserv.&Serv.Charges ■POD Demand Charge ■Other Energy Charges ■Cogen ■Standby Power ■PG&E ■Natural Gas ■Landfill Gas ■POD Landfill Gas ■Natural Gas Delivery ■POD Natural Gas TP Electricity by Source in kWh TP MMBTU of Gas Consumed TP Energy by Source in kWh 30 600 100 2 05 6.93 90 4.72 25 Soo 80 70 20 400 s 60 t 3 3 15 0 300 m 50 c c c 0_ 40 — — — o N 10 200 0 30 26.36—29.27—29.58—29.10— — F 28.26 20 — — — — — 5 100 10 0 0 0 2016 2017 2018 2019 2020 2016 2017 2018 2019 2020 2016 2017 2018 2019 2020 Year Year Year ■Cogen ■Standby Power ■PG&E ■Natural Gas ■Landfill Gas ■Aux Boilers WHB Steam ■Cogen Steam ■Cogen Electrical ■Standby Power ■PG&E This month CCCSD produced and purchased electricity at an average rate of $0.1030 /kWh(including maintenance) Anthropogenic GHG Emissions Renewable Energy Landfill Gas Compared to $0,1448 /kWh if exclusively from PG&E MTCO2e Profile 7,624 MMBtu zs000 15% Generation breaks even with PG&E at $7•90 /MMBTU Recovered Waste Heat 20000 5,464 MMBtu 15000 10% Solar Natural gas was purchased $3.10 /MMBTU 39 MMBtu eq. at a rate of N 0.08% 0 10000 Total Non-Renewable ~ 37,792MMBtu MCE Renewables Natural gas transmission 5000 74% 350 MMBtu eq. cost 1.66 /MMBTU 0.68% 0 CCCSD produces steam at an average rate of $0.0028 /Ib steam March 4, 2021 Regular Board Meeting Agenda Packet- Page 109 of 131 Page 3 of 7 r• - SUMMARY OF CENTRAL SAN'S 2020 ENERGY USAGE Board of Directors Meeting March 4, 2021 Clint Shima, P.E. Senior Engineer Plant Maintenance Division a Slide 1 OVERVIEW Central San's Energy Usage Tracked Monthly Board Updated Quarterly Treatment Plant 2019 versus 2020 Monthly Usage Statistics MCE Impact General Energy Information u �rY 1 New Time-of-Use Rates 49Ri Solar Panels :.. `. Slide 2 ' CENTRALSAN March 4, 2021 Regular Board Meeting Agenda Packet- Page 110 of 131 Page 4 of 7 TREATMENT PLANT 2019 VERSUS 2020 2019 2020 Natural Gas 411,000 MMBtu $2.0 M 426,000 MMBtu $2.0 M (NG): Landfill Gas 92,000 MMBtu $419 k 85,000 MMBtu $377 k (LFG): Total: 503,000 MMBtu $2.4 M 511,000 MMBtu $2.4 M Electricity (PG&E&MCE): 2,882,000 kWh $1,094 k 1,690,000 kWh $738 k Cogeneration: 21,986,000 kWh 22,952,000 kWh Total: 24,868,000 kWh 24,642,000 kWh Slide 3 �eCENTRALSAN MONTHLY USAGE STATISTICS • Total Costs (NG, LFG, and Electricity) o Range: $271,756 to $383,615 o Average: $312,000 • Average Cost/ MG: $291.25 • Average kWh / MG: 1,894 • Area Cost Breakdown o Treatment Plant: 80% — 87% o Pumping Stations: 11% — 17% o Collection System Operations Facility: < 3% Slide 4 r' sCENTRALSAN March 4, 2021 Regular Board Meeting Agenda Packet- Page 111 of 131 Page 5 of 7 MCE IMPACT Savings: Approximately $80,000 compared to Pacific Gas and Electric (PG&E) rates MCE: Light Green is 60% renewable Total PG&E and MCE 2020 Cost: $738,000 MCE 2020 Cost: $174,000 Slide 5 GENERAL ENERGY INFORMATION • Cogeneration engine exchanged in November • NG 2017 Average: $3.50 / MMBtu • NG 2018 Average: $3.24 / MMBtu • NG 2019 Average: $3.04 / MMBtu • NG 2020 Average: $3.01 / MMBtu • NG 2021 Average: $3.25 / MMBtu 2020 Greenhouse Gas: Below 25,000 CO2e MT Renewable Energy: —27% Slide 6 I' CENTRALSAN March 4, 2021 Regular Board Meeting Agenda Packet- Page 112 of 131 Page 6 of 7 GENERAL ENERGY INFORMATION • PG&E o On July 1, 2020, PG&E emerged from Chapter 11 Bankruptcy Protection o Continued Public Safety Power Shutoff outages — Portable Generators • Energy Optimization o Strategic Energy Management o On-Bill Financing (OBF) Program •a Slide 7 CENTRALSAN NEW TIME-OF-USE RATES •Time-of-Use Rate Plan change from E20 to B20 in March (originally November) • Minimal affect on operations expected W..1..—A.,l thr I W-M H fthvafrmberif WIMer xmmMerftMrAMI30 of Mm Se mher30 Mm 1+ m Before:Energy Time-Of-Use Cost(E-20) After:Energy Time-0f-Use Cost JB-20) Mende lflday day-Mday a nerydaYl]pdr,sl xpO ldaW (WIMer) [Summer) [vmYdaylMerl March,Apnl,or May Every day(Summer) Mer(Summ um AM uwAM OFF PEAK f2 AM.9AM 00:00 AM OO:OOAM a9:m AM PARTIAL PEAK 09`00°311 OFFPEAK s� 'm-1z PM 10 pp°A� OFFPEAK SUPE 1z Am 11:00 AM OFFPEAK 11 wm 12 -AImA PEAK —I'm f2A0PM 9AM.2PM 01:OOPMeaiz Gay M:00 PM P.Wd—GAY PARTIAL PEAK DFP PEAK 03:00 PM Memorial NY 03:WPM 2PM-4PM 1PMh1a PMa ..PM aurtM1 al ruly 9304M-9:30 PM 00:00 PM eWr O, vxernm Gayng GaPEAK PEAK PEAK "in - Gaup vM shy 0000 vM O I'm PARTIAL PEAK oa..PM —Z fiPM-9,30PM pg;pp pA, ww PM OFFPEAK OFF PEAK 1a.op PM OFF PEAK OFF PARI4YPFAK 11:00 PM 11:00 PM 9PM-UPIA 1L00 AM - - 12;�A,r, 9PM-f}1UY1 9PM-SZ Slide 8 41411CENTRALSAN' yr — March 4, 2021 Regular Board Meeting Agenda Packet- Page 113 of 131 Page 7 of 7 SOLAR PANELS INSTALLED AT HOUSEHOLD HAZARDOUS WASTE FACILITY AND COLLECTION SYSTEMS OPERATIONS FACILITY 2019 Produced: 283 MWh 2020 Produced: 271 MWh 4` - Slide 9 CENTRALSAN • Slide 10 411111111w,CENTRALSAN' March 4, 2021 Regular Board Meeting Agenda Packet- Page 114 of 131