HomeMy WebLinkAbout09.a. Receive summary of 2021 energy usage Page 1 of 7
Item 9.a.
CENTRALSAN
jdf A- hom
CENTRAL CONTRA COSTA SANITARY DISTRICT
February 17, 2022
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 CENTRAL SAN'S 2021 ENERGY USAGE
Staff will present a summary of Central San's 2021 energy usage.
Strategic Plan Tie-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. Presentation
February 17, 2022 Regular Board Meeting Agenda Packet- Page 47 of 72
Page 2 of 7
T
TI+'; SUMMARY OF CENTRAL SAN'S
2021 ENERGY USAGE
= `} Board of Directors Meeting
. February 17, 2022
r`7 Clint Shima, P.E.
_-- Senior Engineer
Plant Maintenance Division
kx�
•--x—vs- Slide 1
1
OVERVIEW
Central San's Energy Usage
Tracked Monthly
Board Updated Quarterly
Treatment Plant 2020 versus 2021
Monthly Usage Statistics
MCE Impact
General Energy Information
Solar Panels
Slide 2 '
CENTPAL SAN
2
February 17, 2022 Regular Board Meeting Agenda Packet- Page 48 of 72 1
Page 3 of 7
TREATMENT PLANT USAGE STATISTICS
2020 2021
Natural Gas 426,000 MMBtu $2.0 M 424,000 MMBtu $2.6 M
(NG):
Landfill Gas 85,000 MMBtu $377k 81,000 MMBtu $455k
(LFG):
Totals: 511,000 MMBtu $2.4 M 505,000 MMBtu $3.1 M
Electricity
(PG&E&MCE): 1,690,000 kWh $738k 1,628,000 kWh $666k
Cogeneration: 22,952,000 kWh 22,656,000 kWh
Totals: 24,642,000 kWh $3.1 M 24,284,000 kWh $3.7 M
Slide 3 ` 0 11
CENTRALSAN3
TOTAL MONTHLY USAGE STATISTICS*
• Total Costs (NG, LFG, and Electricity)
o Range: $294,163 to $437,309
o Average: $363,000
• Average Cost/ MG: $354
• Average kWh / MG: 1,941
• Area Cost Breakdown
o Treatment Plant: 79% — 87%
o Pumping Stations: 11% — 14%
o Collection System Operations Facility: 2% - 10%
"Includes Treatment Plant,Pumping Stations,CSO facility
Slide 4 '
^- CENTPAL SAN
4
February 17, 2022 Regular Board Meeting Agenda Packet- Page 49 of 72 2
Page 4 of 7
MCE IMPACT
MCS
• Savings: Approximately $23,000 compared to
Pacific Gas and Electric (PG&E) rates
• MCE: Light Green is 60% renewable
• Total PG&E and MCE 2021 Cost: $666,000
• MCE 2021 Cost: $93,000*
"EsPimafed
Slide 5 AVLA
5
GENERAL ENERGY INFORMATION
• 2021 Greenhouse Gas: Below 25,0000O21 MT
• Renewable Energy: -'24%
• Natural Gas Prices
• 2017 Average: $3.50/MMBtu
• 2018 Average: $3.24/MMBtu
• 2019 Average: $3.04/MMBtu
• 2020 Average: $3.04/MMBtu
• 2021 Average: $3.91 /MMBtu
Slide 6 '
6- 0—ti,
6
February 17, 2022 Regular Board Meeting Agenda Packet- Page 50 of 72 3
Page 5 of 7
GENERAL ENERGY INFORMATION
PG&E NG Spot Prices 2018.2021
a
Ir
O • +/+SS
O.
� +S+r+.ytirr
s,
mese
Slide 7 ` I1
7
GENERAL ENERGY INFORMATION
• PG&E Public Safety Power Shutoff (PSPS) outages
o Central San not affected in 2021
o 1 PSPS in 2020
o 3 PSPS in 2019
Energy Optimization
o RAPIDS PG&E program
Slide 8 '
CENTPAL SAN
er
8
February 17, 2022 Regular Board Meeting Agenda Packet- Page 51 of 72 4
Page 6 of 7
COGENERATION
Cogeneration and PG&E/MCE
Cogen produced 93% of electricity for the plant site
in 2021
Central San produced and purchased electricity at
an average rate of$0.1225 /kWh for 2021
Compared to $0.1669 /kWh if exclusively from
PG&E/MCE (monthly average)
Breakeven cost $9.01/dth (monthly average)
F,
Slide9
9
SOLAR PANELS
INSTALLED AT HOUSEHOLD HAZARDOUS WASTE FACILITY AND
COLLECTION SYSTEMS OPERATIONS FACILITY
2020 Produced: 271 MWh
2021 Produced: 269 MWh
! [4
004w-mit."
Slide 10
CENTRAL SAN
10
February 17, 2022 Regular Board Meeting Agenda Packet- Page 52 of 72 5
Page 7 of 7
Slide 11
11
February 17, 2022 Regular Board Meeting Agenda Packet- Page 53 of 72 6