HomeMy WebLinkAbout09.c. Receive Summary of Central San's 2023 Energy UsageItem 9.c.
F ebruary 22, 2024
T O: HO NO R A B L E B O A R D O F D I R E C TO R S
F RO M :C L I NT S HI MA , S E NI O R E NG I NE E R
RE V IE WE D B Y:NE I L ME YE R, P L A NT MA I NT E NA NC E D I V I S I O N MA NA G E R
G R E G NO R B Y, D E P UT Y G E NE R A L MA NA G E R - O P E R AT I O NS
R O G E R S. B A I L E Y, G E NE R A L MA NA G E R
S UB J E C T: R E C E I V E S UMMA RY O F C E NT R A L S A N'S 2023 E NE R G Y US A G E
Staf f will present a summary of C entral San's 2023 energy usage.
Strategic Plan Tie-I n
G O A L TW O: Environmental Stewardship
Strategy 4 - I dentify and advance sustainability initiatives, including reducing energy usage and emissions
G O A L S E V E N : I nnovation and Agility
Strategy 1 - Leverage data analytics to become a more efficient utility
AT TAC HM E NT S :
D escription
1. P resentation
February 22, 2024 Special Board Meeting Agenda Packet - Page 71 of 128
Page 1 of 7
1
Summary of
Central San’s
2023 Energy
Usage
Board of Directors Meeting
Clint Shima, P.E.
Senior Engineer
February 22, 2024
Plant Maintenance Division
Table of Contents
•Treatment Plant Usage 2022 and 2023
•Monthly Usage Statistics
•Marin Clean Energy (MCE) Impact
•General Energy Information
•Solar Panels
•2023 Greenhouse Gas Inventory Update
•2023 Greenhouse Gas Actual vs. Projected
2
February 22, 2024 Special Board Meeting Agenda Packet - Page 72 of 128
Page 2 of 7
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TREATMENT PLANT USAGE TOTALS
2023
431,000 MMBtu $3.9M
89,000 MMBtu $599k
520,000 MMBtu $4.5M
4,225,000 kWh $1.73M
22,144,000 kWh_________
26,369,000 kWh
$6.2M
Natural Gas (NG):
Landfill Gas (LFG):
Totals:
Electricity
(PG&E and MCE):
Cogeneration:
Totals:
3
One Million British Thermal Unit (MMBtu) Kilowatt Hour (kWh)
Pacific Gas and Electric (PG&E) Million (M) Thousands (k)
2022
444,000 MMBtu $3.9M
82,000 MMBtu $492k
526,000 MMBtu $4.4M
2,818,000 kWh $1.13M
21,642,000 kWh_________
24,460,000 kWh
$5.5M
Total Monthly Usage Statistics*
•Total Costs (NG, LFG, and Electricity)*
o Range: $514,410 to $739,348
o Average: $602,071
•Average Cost / Million Gallons (MG): $499
•Average kWh / MG: 1,773
•Area Cost Breakdown
o Treatment Plant: 84% – 90%
o Pumping Stations: 8% – 16%
o Collection System Operations Facility: 1% – 4%
*Includes Treatment Plant, Pumping Stations, and Collection System Operations facility
4
February 22, 2024 Special Board Meeting Agenda Packet - Page 73 of 128
Page 3 of 7
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MCE Impact
•Savings: Approximately $38,000
compared to PG&E rates
•MCE: Light Green is 60% renewable
•Total PG&E and MCE 2023 Cost:
$1.73M
•MCE 2023 Cost: $615,000
5
General Energy Information
•Landfill Gas
o Ceiling of $6 / MMBtu (Jan. to Sept.) and
$9 / MMBtu (Oct. to Dec.) saved Central
San $212,000
o Agreement renewed in October
•Renewable Energy: ~25%
6
February 22, 2024 Special Board Meeting Agenda Packet - Page 74 of 128
Page 4 of 7
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General Energy Information
•PG&E
o Have not experienced Public Safety Power Shutoff outage
since 2020
o Significant PG&E rate increases expected in 2024
•Lagiss Solar Panels
o Accounts returning to PG&E from MCE
o In process of connecting
•Cogeneration
o Breakeven cost $13.63 / dekatherm (dth), monthly average
o 2023 Greenhouse Gas: Below 25,000 Carbon Dioxide
Equivalent Metric Ton
o Brief shutdown for Greenhouse Gas in November
7
Installed at Household Hazardous Waste and
Collection Systems Operations Facilities
Solar Panels
•2022 Produced: 293 Megawatt Hour (MWh)
•2023 Produced: 280 MWh
8
February 22, 2024 Special Board Meeting Agenda Packet - Page 75 of 128
Page 5 of 7
5
2023 Greenhouse Gas Inventory Update
9
2023 Greenhouse Gas Inventory Actual vs. Predicted
10
February 22, 2024 Special Board Meeting Agenda Packet - Page 76 of 128
Page 6 of 7
6
Questions
Slide 1111
February 22, 2024 Special Board Meeting Agenda Packet - Page 77 of 128
Page 7 of 7