HomeMy WebLinkAbout08.a. Receive summary of 2019 energy usage Page 1 of 7
Item 8.a.
,ek CENTRAL SAN
SANITARYCENTRAL CONTRA COSTA , .
March 5, 2020
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 2019 ENERGY USAGE
Senior Engineer Clint Shima will present a summary of Central San's 2019 energy usage. The
presentation will include the following:
• Treatment Plant Usage - 2018 versus 2019
• 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 2019 Energy Usage
2. Presentation
March 5, 2020 Regular Board Meeting Agenda Packet- Page 37 of 106
CCCSD December 2019 Energy Usage
HHWCF(Solar) Treatment Plant Monthly Total Energy Cost: $361,775
HHWCF(Gas and $270 88%of Total$
Electricity)$221 0% o% POD Reserv.&Serv. $297 /MG Treated
Charges(PG&E)
Misc(Gas and $23,327 7%
Electricity) $2,946 POD Demand Charge 1,644 kWh/MG Treated
1% (MCE)$17,635 6%
C50 Facility
POD Electricity
$2 3000lsz%1 .2%of Total$
Import(MCE)
$10,892 4% CSO Electricity,
$40,1% CSO Gas,
$1,074,24%
Page 2 of 7
CSO Vehicle CSO Vehicle
PG&E Charges Bay Electricity, Bay Gas,$389
(trans.+dist.+etc. $609,14% '9%
minus Reserv.&
$118,963 37%� Serv.Charges)
$43,763Pump Stations
la%
San Ramon,$9,449, 11%ofTotal$
24% Moraga,$8,167,
21%
12 Other Pump Stations,
POD Landfill Gas $2,227,6%
$36,211
11%
POD Concord Industrial, Orinda Crossroads,
Transmission $1,033,2% $8,533,21%
r Fairview Lift Station,
$1,195,3%
Lower Orinda,
$4,609,12%
Maltby, $1,575,4%
Martinez,$2,809,7%
Operating Cost of CCCSD by Month TP Electricity Source in kWh TP MMBTU of Gas Consumed
$400,000 2,500 50
$375,722
$350,000 � 45
$349,282 $361,775 2,000 40
$300,000 $348,052 D
3 m 35
$250,000 v 1,500 30
$200,000 A 25
o
r 1,000 s 20
$150,000
15
$100,000 500 10
$50,000 5
$0 0 0
Sep-19 Oct-19 Nov-19 Dec-19 Sep-19 Oct-19 Nov-19 Dec-19 Sep-19 Oct-19 Nov-19 Dec-1
■POD Natural Gas ■Natural Gas Delivery
■POD Landfill Gas ■Other Energy Charges ■Cogen ■Standby Power ■PG&E ■Natural Gas ■Landfill Gas
■POD 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
30 600 100 693 2.05
"tti
90
25 5o0 80
70
20 400
s 60
r 3
3 15 ° 300 m 50
C c o
o m = 40
10 a 200 —
L 30 25.98 26.36—29.27—29.58—29.10—
20
5 100
10
0 0 0
2015 2016 2017 2018 2019 2015 2016 2017 2018 2019 2015 2016 2017 2018 2019
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 $0,1292 /kWh(including maintenance)
Anthropogenic GHG
Emissions Renewable Energy Landfill Gas Compared to $0.1395 /kWh if exclusively from PG&E
7,976 MMBtu
MT CO2e Profile 15%
25000 Recovered Waste Heat
Generation breaks even with PG&E at $5.68 /MMBTU
4,360 MMBtu
20000 � 9%
Natural gas was purchased
15000 solar at a rate of $3.11 /MMBTU
v 31 MMBtu eq.
ij 10000 0.06%
F Total Non-Renewable Natural gas transmission
39,165 MMBtu MCE Renewables $1.67 /MMBTU
5000 76% 187 MMBtu eq. cost
0.36%
o CCCSD produces steam at
an average rate of $0.0031 /lb steam
March 5, 2020 Regular Board Meeting Agenda Packet- Page 38 of 106
Page 3 of 7
IRW_ .,
/ SUMMARY OF CENTRAL SAN'S
2019 ENERGY USAGE
Board of Directors Meeting
March 5, 2020
Clint Shima, P.E.
Senior Engineer
Plant Maintenance Division
Slide 1
OVERVIEW
Central San's Monthly Energy Usage
Board Updated Quarterly
Treatment Plant 2018 versus 2019
Monthly Usage Statistics
MCE Impact
General Energy Information
New Time-of-Use Rates 4;, s4
Solar Panels
Slide 2 `'•.':(1 I
1"-
March 5, 2020 Regular Board Meeting Agenda Packet- Page 39 of 106
Page 4 of 7
TREATMENT PLANT 2018 VERSUS 2019
2018 2019
Natural Gas 421,000 MMBtu $2.0 M 411,000 MMBtu $2.0 M
(NG):
Landfill Gas 94,000 MMBtu $354k 92,000 MMBtu $419k
(LFG):
Total: 515,000 MMBtu $2.3 M 503,000 MMBtu $2.4 M
Electricity
(PG&E&MCE): 2,093,000 kWh $806k 2,882,000 kWh $1,223k
Cogeneration: 22,236,000 kWh 21,922,000 kWh
Total: 24,329,000 kWh 24,804,000 kWh
SlideCENTRALSAN
3 `
a�
MONTHLY USAGE STATISTICS
• Total Costs (NG, LFG, and Electricity)
o Range: $323,000 to $378,000
o Average: $358,000
• Average Cost/ MG: $294.00
• Average kWh / MG: 1,678
• Area Cost Breakdown
o Treatment Plant: 84% — 89%
o Pumping Stations: 10% — 15%
o Collection System Operations Facility: < 3%
Slide 4
C".
CENTRALSAN
March 5, 2020 Regular Board Meeting Agenda Packet- Page 40 of 106
Page 5 of 7
MCE IMPACT
ACIE
• Savings: Approximately $19,000 compared to
Pacific Gas and Electric (PG&E) rates
• MCE: Light Green is 60% renewable
• Total PG&E and MCE 2019 Cost: $1,223,000
• MCE (January — December 2019): $342,000
Slide 5 `
GENERAL ENERGY INFORMATION
• Cogeneration borescope monitoring increased
electrical import
• Cogeneration engine exchanged in November
• NG 2016 Average: $3.86 / MMBtu
• NG 2017 Average: $3.50 / MMBtu
• NG 2018 Average: $3.24 / MMBtu
• NG 2019 Average: $3.04 / MMBtu
• NG 2020 Average: $3.01 / MMBtu
• 2019 Greenhouse Gas: Below 25,000 COZe MT
• Renewable Energy: --27%
Slide 6
CENTRALSAN
March 5, 2020 Regular Board Meeting Agenda Packet- Page 41 of 106
Page 6 of 7
GENERAL ENERGY INFORMATION
PG&E
c Filed Chapter 11 Bankruptcy Protection in
January 2019 — Plans to exit end of June 2020
o New rate schedule planned November 2020
o Public Safety Power Shutoff outages —
Generators
Energy Optimization
o PG&E large integrated audit
o Strategic Energy Management
Slide 7 `
NEW TIME-OF-USE RATES
• Time-of-Use Rate Plan change from E20 to B20
• Minimal affect on operations expected
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Mare:Energy Time-0f-Use Cost E-20) After:Energy Time-of-Use Cost(8-20)
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CENTRALSAN
March 5, 2020 Regular Board Meeting Agenda Packet- Page 42 of 106
Page 7 of 7
SOLAR PANELS
INSTALLED AT HOUSEHOLD HAZARDOUS WASTE FACILITY AND
COLLECTION SYSTEMS OPERATIONS FACILITY
2018 Produced: 277 MWh
2019 Produced: 282 MWh
a I
ry+ Slide 9
s. Slide 10
CENTRALSAN
March 5, 2020 Regular Board Meeting Agenda Packet- Page 43 of 106