HomeMy WebLinkAbout#11 2022 Greenhouse Gas Inventory AGENDA ITEM #11
Public Utility District m
MEETING DATE: January 17, 2024
TO: Board of Directors
FROM: Steven Keates, Special Projects Administrator
Michael Salmon, Chief Financial Officer
SUBJECT: Consideration of Accepting the 2022 Greenhouse Gas Inventory
Report for TDPUD.
APPROVED BY:
Brian C. Wright, General Manager
RECOMMENDATION:
Board receive this report and direct staff to file the final Greenhouse Gas Inventory for
calendar year 2022
BACKGROUND:
In early 2023, TDPUD staff initiated a Greenhouse Gas Inventory to reliably quantify the
District's current emissions' footprint— with specific emphasis on those emissions
occurring in calendar year 2022. The study was completed in late 2023, and the report
has been finalized for publication.
ANALYSIS AND BODY:
The attached report provides a full treatment of the data & results as reported at the
board workshop on September 6, 2023. The data collected through this inventory, and
their analysis, are critical in supporting TDPUD's strategic initiatives. The report
submitted in this item is written to provide the Board and public results for the GHG
Inventory.
GOALS AND OBJECTIVES:
District Code 1 .05.020 Objectives:
1. Responsibly serve the public.
2. Provide a healthy and safe work environment for all District employees.
3. Provide reliable and high quality water supply and distribution system to meet
current and future needs.
4. Provide reliable and high quality electric supply and distribution system to meet
current and future needs.
5. Manage the District in an environmentally sound manner.
6. Manage the District in an effective, efficient and fiscally responsible manner.
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District Code 1.05.030 Goals:
1. Manage for Financial Stability and Resiliency
2. Environmental Stewardship: Create a sustainable resilient environment for all our
communities.
3. Engage with our customers and communities in a welcoming and transparent way to
identify opportunities.
4. Take the best of private sector thinking to modernize the utility and add value to our
communities.
FISCAL IMPACT:
This item has no fiscal impact.
ATTACHMENTS:
1. GHG Inventory Report_CY2022_Draft
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1 40010' TRUCKEE DONNER
Public Utility District
2022 TDPUD GREENHOUSE GAS INVENTORY
REPORT - DRAFT DOCUMENT
TRUCKEE DONNER PUBLIC UTILITY DISTRICT
11570 Donner Pass Road,Truckee,Ca 96161
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Table of Contents
1 Executive Summary...........................................................................................................................................1
1.1 Report Organization ..................................................................................................................................1
1.2 Summary of Findings.................................................................................................................................1
1.2.1 Scope 1 Emissions Key Findings.........................................................................................................1
1.2.2 Scope 2 Emissions Key Findings.........................................................................................................2
1.2.3 Scope 3 Emissions Key Findings.........................................................................................................2
2 Background and Context for 2022 GHG Inventory............................................................................................1
2.1 Regulatory and Legislative Context for the GHG Inventory.......................................................................1
2.2 Objectives for Proposed Greenhouse Gas Inventory.................................................................................2
3 Approach(es) Used in GHG Inventory................................................................................................................3
3.1 General Inventory Methodologies.............................................................................................................3
3.2 Organizational and Reporting Boundaries.................................................................................................3
3.2.1 Electric Utility General Description....................................................................................................4
3.2.2 Water Utility General Description .....................................................................................................5
3.2.3 Defining an Organizational Boundary for the Inventory....................................................................5
3.2.4 Reporting Boundary...........................................................................................................................6
3.3 GHG Emission Sources and Inventory Scoping..........................................................................................6
3.3.1 Quantifying Emissions........................................................................................................................7
3.3.2 Emissions Factors...............................................................................................................................7
4 Study Findings: Organizational Emissions..........................................................................................................9
4.1 Scope 1 Emissions: Direct Anthropogenic.................................................................................................9
4.1.1 Stationary Combustion Emissions ...................................................................................................11
4.1.2 Mobile Combustion Emissions.........................................................................................................14
4.1.3 Fugitive Emissions............................................................................................................................16
4.1.4 Process Emissions............................................................................................................................16
4.2 Scope 2 Emissions: Indirect Direct Anthropogenic..................................................................................17
4.2.1 Differences in Reported GHG Emissions..........................................................................................19
4.2.2 Emissions Intensities for Generation Resources..............................................................................19
4.2.3 Indirect Emissions (Scope 2)Analysis Results..................................................................................21
4.3 Scope 3 Emissions: Indirect Emissions Outside of Organization Value Chain..........................................22
4.3.1 Fuel Combustion from Employee Commuting.................................................................................23
4.3.2 Electricity Delivered to Customers ..................................................................................................24
4.3.3 Wastewater Treatment ...................................................................................................................26
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Definition of Key Terms
Carbon Emissions This term is used to broadly include each of the(6)gasses listed in AB 32 (2006).
These gasses include: carbon dioxide, methane, nitrous oxide,sulfur hexafluoride,
hydrofluorocarbons and perfluorocarbons. It is typically convenient to normalize
reported GHG emissions into units of Carbon Dioxide equivalent(COze)
Carbon Dioxide equivalent A reporting metric which normalizes emissions of different GHG gasses on the basis
(COze) of their global warming potential (GWP)to the equivalent amount of carbon dioxide
with the same GWP
Global Warming Potential The relative potency of different greenhouse gasses to trap heat within Earth's
atmosphere(known as the greenhouse effect).
Net Carbon Reduction A net reduction of carbon emissions assesses the balance between carbon sources
(e.g.any release of GHG emissions) and carbon sinks(e.g. activities which pull carbon
emissions from the atmosphere and render their greenhouse effect inert). Equivalent
reductions can therefore be garnered through reduction of emissions at the source or
activities which create/expand a carbon sink.
Zero-Carbon Resource A term used in SB 100 to refer to a specific type of electricity generation resource.SB
100 does not define"zero-carbon resources,"and the state had no legal definition
before the bill becoming law.The joint agencies interpreted "zero-carbon resources"
to mean energy resources that either qualify as"renewable" in the most recent RPS
(Renewables Portfolio Standard) Eligibility Guidebook or generate zero greenhouse
gas emissions on site.SB 100 workshops and documents refer to these criteria as
"RPS+"
P a g e 11 Section 1: Executive Summary
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