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Item 4.b.
F.1_448�411C_S 0
December 4, 2024
TO: ENGINEERING AND OPERATIONS COMMITTEE
FROM: ZACH LEE, ASSOCIATE ENGINEER
CLINT SHI MA, SENIOR ENGINEER
REVIEWED BY: NEIL MEYER, PLANT MAINTENANCE DIVISION MANAGER
GREG NORBY, DEPUTY GM - ENGINEERING & OPERATIONS
ROGER S. BAILEY, GENERAL MANAGER
SUBJECT: RECEIVE THIRD QUARTER UPDATE ON CENTRAL SAN'S ENERGY
USAGE
Central San actively tracks greenhouse (GHG) emissions to optimize the use of energy at its facilities in
the most cost-effective and environmentally responsible manner. The attached energy dashboard
contains a breakdown of Central San's energy usage for the month of September 2024 along with a
comparison of the energy used during the third quarter of the calendar year.
Strategic Plan re -In
GOAL TWO: Environmental Stewardship
Strategy 4 - Identify and advance sustainability initiatives, including reducing energy usage and emissions
ATTACHMENTS:
1. Energy Dashboard
December 4, 2024 EOPS Regular Committee Meeting Agenda Packet - Page 32 of 35
CCCSD September 2024 Energy Usage
Monthly Total Energy Cost: $491,813
HHWCF (Gas and Treatment Plant
Electricity), $40, 0%
$493 /MG Treated
84% of Total $
HHWCF (Solar),
Misc (Gas and $639, 0%
POD Reserv. & Serv. p p
Charges (PG&E), 1,838 kWh/MG Treated
Electricity), $2,410,
$47,493, 11%
1%
CSO Facility
f
2% of Total $
POD Natural Gas,
$69,876, 17%
CSO Solar,
CSO Electricity, $5,079, 49%
$2,012, 20%
PG&E Charges PagcP�aof 2
(trans. + dist. + etc. CSO Vehicle $2,194 , 21 %
minus Reserv. & Bay Electricity, CSO Vehicle
Serv. Charges), $1,042,10% Bay Gas, $22,
$51,940, 13% 0%
Pumping Stations
San Ramon, $18,485 14�o Of Total $
, 27% Moraga, $12,352,
18%
POD Landfill Gas,
POD Natural Gas
$65,647, 16% 12 Other Pumping
Stations, $2,845, 4%
Transmission,
Transmission,
s42%
Orinda Crossroads,
$174,Concord
Industrial, $11,782, 17%
$2,283, 3%
Fairview Lift Station, Lower Orinda,
$2,950, 4% $10,422, 15%
Maltby, $2,865,4%
Martinez, $5,469,
8%
Operating Cost of CCCSD by Month
TP Electricity Source in kWh TP MMBTU of Gas Consumed
$800,000
3,000
60
$700,000
2,500 50
$600,000 76,648 $578,240 $595,571
$491,813
°� 40
3 2,000 ~
$500,000
v �
$400,000
c y
0
1,500 30 3 m
°
'o
$300,000
t
~
1,000
r
20
$200,000
500
10
$100,000
$0
0
0
Jun-24 Jul-24 Aug-24 Sep-24
Jun-24 Jul-24 Aug-24 Sep-24 Jun-24 Jul-24 Aug-24 Sep-24
■ POD Natural Gas ■ Natural Gas Delivery
■Cogen ■ Standby Power ■ PG&E ■ Natural Gas ■ Landfill Gas
■ POD Landfill Gas ■ Other Energy Charges
■ MCE Demand Charge ■ POD Reserv. & Serv. Charges
■ PG&E Charges
TP Electricity by Source in kWh
TP MMBTU of Gas Consumed TP Energy by Source in kWh
30
600
120
500
100
4.11
25
20
400
68 80
L
1.41
2
3
60
3 15
° 300
a
°
c
C
10
2.68 22.4
1p
No' 200
40
367
26.12 27.14 29.21 21.29
5
100
20
28.26
— — —
0
0
0
2020 2021 2022 2023 2024
2020 2021 2022 2023 2024 2020 2021 2022 2023 2024
Year
Year Year
■ Aux Boilers WHB Steam ■ Cogen Steam
■ Cogen ■Standby Power PG&E
■Natural Gas ■Landfill Gas
■ Cogen Electrical ■Standby Power ■ PG&E
This month CCCSD produced and
purchased electricity at an average rate of $0.1673 /kWh (including maintenance)
Anthropogenic GHG
Compared to $0•3254 /kWh if exclusively from PG&E
Emissions Renewable Energy Landfill Gas
MT CO2e Profile
7,294 MMBtu
25000
15%
Generation breaks even with PG&E at $20,29 /MMBTU
20000
18,953
Recovered Waste Heat
3,764 MMBtu Natural gas was purchased at a $1.95 / M M BTU
8%
15000
rate of
Solar
ou 10000
Total Non -Renewable
85 MMBtu eq.
0.17%
O'�M439CE
36,958 MMBtu
Renewables Natural gas transmission cost $4•87 /MMBTU
5000
76%
MMBtu eq.
0.91 %
0
CCCSD produces steam at an
$0.0056 /Ib steam
average rate of
December 4, 2024 EOPS Regular Committee Meeting Agenda Packet - Page 33 of 35