HomeMy WebLinkAbout09.c. Receive summary of 2018 energy usage Page 1 of 7
Item 9.c.
,ek CENTRAL SAN
SANITARYCENTRAL CONTRA COSTA , .
February 21, 2019
TO: HONORABLE BOARD OF DIRECTORS
FROM: CLINT SHIMA, SENIOR ENGINEER
REVIEWED BY: NEIL MEYER, PLANT MAINTENANCE DIVISION MANAGER
ANN SASAKI, DEPUTY GENERAL MANAGER
ROGER S. BAILEY, GENERAL MANAGER
SUBJECT: RECEIVE SUMMARY OF 2018 ENERGY USAGE
Senior Engineer Clint Shima will present a summary of Central San's 2018 energy usage. The
presentation will include the following:
• Treatment Plant Usage - 2017 versus 2018
• MCE Impact
• Monthly Usage Statistics
• General Energy Information
• Solar Panels
Strategic Plan Tie-In
GOAL SIX: Embrace Technology, Innovation and Environmental Sustainability
Strategy 2- Reduce reliance on non-renewable energy, Strategy 3- Encourage the review and testing of technology to
optimize and modernize business operations
ATTACHMENTS:
1. December 2018 Energy Usage
2. Presentation
February 21, 2019 Regular Board Meeting Agenda Packet- Page 74 of 111
CCCSD December 2018 Energy Usage
HHWCF(Solar) Treatment Plant Monthly Total Energy Cost: $318,488
HHWCF(Gas and $250 87%of Total$ POD Demand
Electricity)$142 0% 0% POD Reserv.&Serv.Charge(VICE) $- $284 /MG Treated
Charges(PG&E) 0%
Misc(Gas and $22,373 8% POD Electricity 1 723 kWh/MG Treated
Electricity) $2,429 Import(NICE)1% $15,165 6%
CSO Facility
CSO solar, 0.6%of Total $
Fr $2,174,... CSO Gas,
$1,631,33%
PG&E Charges CSO Electricity, Rs'@,26 of 7
(trans.+dist.+etc. $36,1% Bay Gas, $485
minus Reserv.& CSO Vehicle ,10%
Serv.Charges) Bay Electricity,
POD Natural Gas $41,571 $528,11%
$105,574 38% 15%
Pump Stations
San Ramon,$9,236, 12%of Total$
24%
POD Landfill Gas 12 Other Pump Moraga,$9,767,
$35,541 Stations,$2,294,6% 25%
13%
POD Natural Gas—
Transmission
Concord Industrial,
L $52,203 $923,2% Orinda Crossroads,
$6,806,18%
Fairview Lift Station,
$1,524,4% Lower Orinda,$3,879,
10%
Maltby,$1,556,4% Martinez,$2,652,7%
Operating Cost of CCCSD by Month TP Electricity Source in kWh TP MMBTU of Gas Consumed
$350,000 $295,926 $318,737 2,500 50
$289,638 $290,717 45
$300,000 2,000 40
$250,000 3 m 35
1,500 30
$200,000 c v
m 25
Mm
$150,000 F 1,000 s 20
$100,000 15
500 10
$50,000
5
$0 0 0
Sep-18 Oct-18 Nov-18 Dec-18 Sep-18 Oct-18 Nov-18 Dec-18 Sep-18 Oct-18 Nov-18 Dec-18
■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
90 4.92
1.73 6.93 2.05
25 500 80
3 2.05
70
till[
20 400
� s 60
r 3
Y15 ° 300 x50
c
40 —
10OS o 200 22.67— —
0 30 25.98 26.36—29,27—29.58—
~ 20
5 100
10
0 0 0
2014 2015 2016 2017 2018 2014 2015 2016 2017 2018 2014 2015 2016 2017 2018
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 $0,1155( /kWh(including maintenance)
Anthropogenic GHG Compared to $0,1270 /kWh if exclusively from PG&E
Emissions Renewable Energy Landfill Gas
MT CO2e Profile 7,912 MMBtu
zs000 17%
23,787 Generation breaks even with PG&E at $55,87 /MMBTU
20000 Recovered Waste Heat
4,898 MMBtu Natural gas was purchased at
15000 11% $3,34 /MMBTU
v
Solar a rate of
� 39 MMBtu eq.
ou 10000 Total Non-Renewable 0.09%
2 32,869 MMBtu /MMBTU as transmission cost
71% g $1,655
5000 VICE Renewables Natural
573 NI eq.
0 1.24%
CCCSD produces steam at
an average rate of $0.0033 /Ib steam
February 21, 2019 Regular Board Meeting Agenda Packet- Page 75 of 111
Page 3 of 7
!I SUMMARY OF CENTRAL SAN'S
2018 ENERGY USAGE
Board of Directors Meeting
February 21, 2019
Clint Shima, P.E.
Senior Engineer
a
Plant Maintenance Division
i - Slide 1 =
OVERVIEW
• Central San's Monthly Energy Usage
o Board Updated Quarterly
• Treatment Plant 2017 versus 2018
• MCE Impact
• Monthly Usage Statistics
• General Energy Information
9A
Solar Panels
_ _.. Slide2 '
February 21, 2019 Regular Board Meeting Agenda Packet- Page 76 of 111
Page 4 of 7
TREATMENT PLANT 2017 VERSUS 2018
2017 2018
Natural Gas
(NG): 398,000 MMBtu $1.8 M 421,000 MMBtu $2.0 M
Landfill Gas 89.000 MMBtu $308k 94.000 MMBtu $354k
(LFG):
Total: 487,000 MMBtu $2.1 M 515,000 MMBtu $2.3 M
Electricity
(PG&E&MCE): 61606,000 kWh $1.3 M 2,093,000 kWh $806k
(Cogen): 19,679,000 kWh 22,236,000 kWh
Total: 26,285,000 kWh 24,329,000 kWh
Slide 3 �` I
MCE IMPACT
(MCE
• MCE began providing electricity generation to
Central San in May 2018
• Savings: Approximately $18,000 compared to PG&E
rates
• In 2019, MCE expects Light Green to be 61%
renewable
• Total PG&E and MCE 2018 Cost: $806,000
• MCE (May— December 2018): $116,000
Slide4
February 21, 2019 Regular Board Meeting Agenda Packet- Page 77 of 111
Page 5 of 7
MONTHLY USAGE STATISTICS
Total Costs (NG, LFG, and Electricity)
o Range: $268,000 to $394,000
o Average: $312,000
Average Cost / MG: $289.50
Average kWh / MG: 1,861
Area Cost Breakdown
Treatment Plant: 83% — 88%
Pumping Stations: 10% — 15%
Collection System Operations Facility: < 1%
4 �
Slide 5 =
GENERAL ENERGY INFORMATION
Increased cogeneration production reduced electrical
import
NG 2017 Average: $3.50/MMBtu
NG 2018 Average: $3.24/MMBtu
• NG 2019 Average: $3.04/MMBtu
• NG 2020 Average: None
• New LFG Contract in October 2018
Supply is steady
2018 Greenhouse Gas: Below 25,000 CO2e MT
Renewable Energy: —27%
Slide 6
' 1
February 21, 2019 Regular Board Meeting Agenda Packet- Page 78 of 111
Page 6 of 7
GENERAL ENERGY INFORMATION
PG&E
Filed Chapter 11 Bankruptcy Protection on
January 29, 2019
Service will be maintained
Energy Optimization
o PG&E large integrated audit
o Strategic Energy ManagementF
_ Slide?
SOLAR PANELS
INSTALLED AT HOUSEHOLD HAZARDOUS WASTE FACILITY AND
COLLECTION SYSTEMS OPERATIONS FACILITY
2017 Produced: 288 MWh `
2018 Produced: 277 MWh
rt r rt
Slide �
February 21, 2019 Regular Board Meeting Agenda Packet- Page 79 of 111
Page 7 of 7
Slide 9 I
February 21, 2019 Regular Board Meeting Agenda Packet- Page 80 of 111