City Eorts to Reduce
Carbon Emissions
Audit Report
January 2020
City of Ausn
Oce of the City Auditor
The City of Ausn has made considerable eorts to reduce the community’s carbon emissions. Ausn
Energy, a City-owned electric ulity, is on track to meet or even exceed its goal of generang 65% renewable
energy by 2027. Ausn Energy is making progress to stop energy generaon from its power plants that emit
large amounts of carbon. The City is also working to help the community reduce transportaon emissions.
However, it is unclear if the City will reduce transportaon emissions enough to meet its goal for a carbon-
neutral community by 2050. The City can do more to promote electric vehicles to advance the community’s
progress toward carbon neutrality.
2 Oce of the City Auditor
Background
Objecve
Contents
How eecve are the City’s eorts to reduce community-wide carbon
emissions from energy generaon and transportaon?
Governments, businesses, non-prots, and individuals worldwide are
working to reduce carbon emissions. Carbon emissions contribute to
global warming and climate change, leading to higher temperatures and
more extreme weather events around the world. Carbon emissions come
from many dierent sources. Power plants, gas-powered cars, and trash in
landlls are some sources of carbon emissions.
In August 2019, City Council declared a climate emergency. Part of the
City of Ausn’s strategy to address the climate emergency is to reduce
carbon emissions. The City has two carbon-reducon goals. The rst goal
is for municipal operaons to be carbon neutral by 2020. The second goal
is for the Ausn community to be carbon neutral by 2050.
1
The City has made progress toward achieving carbon-neutral municipal
operaons by 2020. Municipal carbon emissions dropped signicantly in
2011 and 2012 because the City switched to 100% renewable energy
for City operaons. Addionally, the City is on track to meet its goals to
electrify some of the City’s vehicles by 2020.
1 
The Ausn community is dened as Travis County for the purposes of reporng
community-wide emissions.
Cover: Wind Turbines, hps://pixabay.com/photos/windmill-farm-texas-
oklahoma-2773150/
Objecve and Background 2
What We Found 4
Appendix 9
Recommendaons and Management Response 10
Scope and Methodology 12
Many peer cies are working toward
a 2050 carbon-neutral community.
See the appendix for a comparison
of peer cies’ community-wide
carbon reducon goals.
Exhibit 1: The City of Ausn’s municipal emissions decreased aer 2010
due to switching to renewable energy
SOURCE: Oce of the City Auditor’s analysis of Oce of Sustainability data, October 2019
0
50,000
100,000
150,000
200,000
2010 2012 2018
Other
Vehicle Fuel Use
Electricity
Metric Tons CO2e*
*CO2e signies carbon dioxide equivalent, which is used to compare emissions from various
greenhouse gases based on their global warming potenal.
3 Oce of the City Auditor
The Oce of Sustainability is exploring opons to buy carbon osets to
account for the remaining municipal emissions to meet the 2020 goal.
Carbon osets are purchased to cancel out an organizaon’s emissions
instead of directly reducing them. An organizaon can contribute money
to eorts that reduce carbon emissions elsewhere and then apply this
reducon to its own emissions. The Oce of Sustainability esmates the
carbon osets needed to cover the remaining municipal carbon emissions
will cost between $200,000 and $500,000 this year.
However, municipal carbon emissions are less than one percent of the
community’s emissions. The more challenging goal is to be a carbon-
neutral community by 2050.
The Ausn Community Climate Plan directs the City’s eorts to become
a carbon-neutral community by 2050. There are also other City plans that
include eorts to reduce carbon emissions from parcular areas, such as
energy generaon and transportaon. The Ausn Community Climate Plan
helps to align these other City plans in an overall eort to become carbon
neutral.
The Oce of Sustainability leads eorts to create and update the Ausn
Community Climate Plan. The Oce of Sustainability also reports data
and conducts analyses that provide informaon for long-term planning.
The Oce of Sustainability reported that the community’s esmated
carbon emissions were 12,500,000 metric tons in 2017. Energy and
transportaon emissions made up 90% of that total.
Exhibit 2: Ausn’s community emissions have decreased over me**
0
2,000,000
4,000,000
6,000,000
8,000,000
10,000,000
12,000,000
14,000,000
16,000,000
2010 2011 2012 2013 2014 2015 2016 2017
Waste
Industrial Process
Transportation
Energy
SOURCE: Oce of Sustainability, October 2019
Metric Tons CO2e*
*CO2e signies carbon dioxide equivalent, which is used to compare emissions from various
greenhouse gases based on their global warming potenal.
**Community-wide emissions data for 2018 was not nalized at the me of this report.
The City of Ausn has made considerable eorts to reduce the
community’s carbon emissions. Ausn Energy, a City-owned electric ulity,
is on track to meet or even exceed its goal of generang 65% renewable
energy by 2027. Ausn Energy is making progress to stop energy
generaon from its power plants that emit large amounts of carbon.
The City is also working to help the community reduce transportaon
emissions. However, it is unclear if the City will reduce transportaon
emissions enough to meet its goal for a carbon-neutral community by
2050. The City can do more to promote electric vehicles to advance the
community’s progress toward carbon neutrality.
Ausn Energy is reducing
carbon emissions from
energy generaon on
track with the goal to
be a carbon-neutral
community in 2050.
Finding 1
Ausn Energy generates energy from several dierent sources - coal,
natural gas, nuclear, and renewable. Coal and natural gas produce large
amounts of carbon emissions. Nuclear energy does not produce carbon
emissions, but it is not renewable. Renewable sources, primarily wind and
solar, do not produce carbon emissions.
2
The amount of energy generated
from each source at a certain me varies due to the need for energy,
weather condions, and other factors.
Ausn Energy must increase renewable energy generaon and reduce
generaon from its sources that emit large amounts of carbon to stay on
track for the 2050 carbon neutrality goal.
Ausn Energy is increasing its percentage of renewable energy generaon
and is on track to meet or even exceed its 2027 renewable energy goal.
The Ausn Energy Resource, Generaon, and Climate Protecon Plan
to 2027 (AE 2027 plan) directs the City’s eorts to increase renewable
energy and close power plants that emit large amounts of carbon.
The AE 2027 plan sets a goal for Ausn Energy to have 65% renewable
energy generaon by 2027. On average, Ausn Energy’s energy generaon
was 37% renewable from October 2018 to July 2019.
3
2 
Ausn Energy’s renewable energy also includes a small amount of biomass.
3 
Ausn Energy’s 37% renewable generaon is a percentage of its total energy generaon.
During this same period, Ausn Energy’s renewable generaon as a percentage of its
customers’ energy needs was 40%.
What We Found
Summary
Ausn Energy’s energy generaon
was 61% carbon-free overall (37%
renewable and 24% nuclear) from
October 2018 to July 2019.
5 Oce of the City Auditor
Ausn Energy enters into agreements to buy renewable power from
companies that own wind or solar farms. In August 2019, City Council
approved the request to increase the amount of wind power Ausn Energy
buys. Ausn Energy projects that the addion of this wind power will raise
its renewable percentage to 61% by 2021.
4
Based on these projecons, Ausn Energy will be close to reaching its
renewable energy goal six years ahead of the target date.
Ausn Energy is making progress to stop generaon from two power
plants that produce large amounts of carbon emissions.
The AE 2027 plan set goals for Ausn Energy to stop producon from
two of its energy sources that emit large amounts of carbon. These energy
sources are the Decker Creek Power Staon and the Fayee Power
Project.
The Decker Creek Power Staon is a natural gas power staon with two
steam units, owned by Ausn Energy. The AE 2027 plan sets targets to
close one steam unit by the end of 2020 and to close the other steam unit
by the end of 2021. Ausn Energy has a dened plan and meline to make
progress toward meeng these goals. City sta who currently operate the
Decker Creek Power Staon will no longer have posions when both units
are rered. Ausn Energy is providing training to these employees to help
them prepare for new employment.
The Fayee Power Project is a coal plant with three units. Ausn Energy
co-owns two of the units with the Lower Colorado River Authority (LCRA),
a public ulity created by the Texas State Legislature. LCRA owns the third
unit. In August 2019, City Council approved Ausn Energy’s request for
legal counsel to assist negoaons with LCRA to stop producon from
Ausn Energy’s share of the Fayee Power Project.
4 
Ausn Energy’s 2021 projecon that renewable generaon will be 61% is reported as a
percentage of its projected customers’ energy needs.
Ausn Energy projects energy
generaon will be 84% carbon-free
overall (61% renewable and 23%
nuclear) by 2021.
Exhibit 3: Ausn Energy’s generaon was 37% renewable and 61%
carbon-free* from October 2018 to July 2019
Natural
Gas
12%
Renewable
37%
Coal
25%
Nuclear
24%
Other
2%
SOURCE: Oce of the City Auditor analysis of Ausn Energy data, October 2019
*Renewable generaon is added to nuclear generaon to calculate the carbon-free percentage.
Ausn Energy sta say they are working to stop producon from their
share of the plant as opposed to selling their share to another enty.
Ausn Energy has included the impact of stopping producon from both of
these energy sources in their budgetary and energy generaon forecasts.
The City of Ausn has a high percentage of renewable generaon
compared to peer cies, parcularly peer cies in Texas.
Ausn Energy is an electric ulity owned by the City of Ausn. As a result,
the City of Ausn has more control over its energy generaon resources
than cies who do not own their electric ulity. Houston and Dallas do
not own their electric ulity. These cies do not have informaon about
how much renewable energy supplies their communies. Ausn Energy’s
renewable generaon is also 15 percentage points higher than the City of
San Antonio, which does own its electric ulity.
Exhibit 4: Ausn’s percentage of renewable energy compared to peer
cies that own their electric ulity
SOURCE: Oce of the City Auditor peer city analysis, October 2019
City Community-wide energy goal Renewable energy*
Seale Maintain a carbon-neutral ulity 93% in 2017
San Jose 100% renewable by 2050 45%
Ausn 65% renewable by 2027 37%
Los Angeles 100% renewable by 2045 30% in 2017
San Antonio 40% renewable by 2040 22%
Columbus** 10% renewable by 2020 City does not have
this informaon
**Columbus’ municipally-owned ulity is small and only serves about 14,000 customers.
*Figures as of 2019 unless otherwise stated.
The City has eorts
in place to reduce
transportaon emissions.
However, it is unclear
if the City will reduce
transportaon emissions
to the extent needed to
meet the 2050 carbon-
neutral goal.
Finding 2
People need to signicantly decrease driving alone in gas-powered cars
for the City to meet its goal to be carbon neutral by 2050.
Ausn is a city that relies primarily on gas-powered cars to move around.
About 75% of Ausn residents commute to work by driving alone.
A primary way to decrease transportaon emissions is for people to drive
alone in gas-powered cars less oen. This also has the potenal to support
other crical City goals, such as reducing congeson and car accidents.
The Ausn Strategic Mobility Plan set a goal in 2019 to reduce the number
of people driving alone to 50% by 2039. This eort will require changes
to Ausn’s transportaon infrastructure. The Ausn Transportaon
Department (ATD) has strategies to invest in addional infrastructure such
as sidewalks, bike lanes, and transit. These infrastructure changes are part
of the strategies in the Ausn Strategic Mobility Plan to work toward the
goal of people driving less. Infrastructure changes are oen long-term
projects. These changes require signicant me, money, and coordinaon
with other enes.
The Ausn Transportaon Department also has programs to encourage
people to change their habits. ATD runs an incenve program to
encourage City employees to commute in ways other than driving alone.
In addion, ATD works with an organizaon called Movability. Movability
is a transportaon management associaon that helps employers in Ausn
develop commute plans for their employees to drive alone less. ATD also
has a public outreach program, Smart Trips, to help people learn about
transportaon opons other than driving alone.
Despite these eorts, the City of Ausn does not have direct control over
whether someone decides to drive alone in a gas-powered car. This lack of
control makes it dicult for the City to know if it will reduce transportaon
emissions enough to achieve the 2050 carbon-neutral goal.
In addion to driving less, people need to adopt electric vehicles in
greater numbers for the City to meet its goal to be carbon neutral by
2050. The City can do more to promote electric vehicle adopon.
Electric vehicles are another way to reduce transportaon emissions. It is
important to note that electric vehicles do not reduce congeson or car
accidents. Electric vehicles cannot replace eorts to encourage people to
drive less. However, electric vehicles can contribute to carbon reducon
without extensive infrastructure changes or signicant modicaons to
people’s transportaon habits.
The City of Ausn is working to add more electric vehicles where possible
to its municipal eet. In 2016, City Council passed a goal for the City
to have 330 electric vehicles in its eet by 2020. The City is on track to
meet that goal as well as install the charging staons to support those
vehicles. However, the municipal eet is less than one percent of the total
community carbon emissions.
The Oce of Sustainability projects
that transportaon will contribute to
more than half of the community’s
carbon emissions by 2030.
The Internaonal Council on Clean
Transportaon highlights Ausn
as a regional leader in community
adopon of electric vehicles.
Almost a quarter of electric vehicles
registered in Texas in 2018 were
registered in Travis and Williamson
counes.
8 Oce of the City Auditor
The community needs to adopt electric vehicles in greater numbers to
make signicant progress toward the 2050 carbon neutrality goal.
The City also has eorts in place to encourage electric vehicle adopon in
the community. Ausn Energy is currently responsible for most of these
eorts. Ausn Energy has public charging staons throughout the city.
Ausn Energy oers rebates to single-family and mul-family residenal
properes for electric vehicle charging staons. Ausn Energy created
an online electric vehicle buying guide, which includes informaon such
as charging staon locaons and available incenves for buying electric
vehicles. Ausn Energy also promotes electric vehicle adopon through
social media and community events.
However, other cies have addional iniaves to encourage community
electric vehicle adopon that the City of Ausn does not. The City of
Ausn may be able to implement similar eorts to increase community
electric vehicle adopon. The City of Columbus oers rebates for certain
companies’ employees to purchase electric vehicles. The cies of San
Jose, Atlanta, and Boston have electric vehicle-ready ordinances. These
ordinances require new parking construcon to have a certain percentage
of charging staons or at least electric connecvity for future charging
staons.
The City of Ausn does not have a comprehensive plan to increase
community electric vehicle adopon. However, the City has already
idened a need for this plan.
In May 2019, City Council passed
a resoluon direcng the City Manager to include an analysis of
transportaon electricaon and acon planning in the next update to the
Ausn Community Climate Plan. The Oce of Sustainability is working on
incorporang strategies to promote electric vehicles through the larger
eort to update the Ausn Community Climate Plan in 2020.
The Internaonal Council on
Clean Transportaon found that
consumer incenves are important
to increasing community electric
vehicle adopon.
Appendix
City Community-wide carbon-neutral goal Community-wide energy goal Municipal
owned
ulity?
Renewable Carbon-free*
Seale 100% carbon-neutral community by 2050 Maintain status as a carbon-neutral ulity Ye s 93% in 2017 97% in 2017
San Jose Reduce emissions 80% below 1990 levels
by 2050
100% carbon-free by 2021
100% renewable by 2050
Ye s 45% 80%
Ausn 100% carbon-neutral community by 2050 65% renewable by 2027 Ye s 37% 60%
Los Angeles 100% carbon-neutral community by 2050 100% renewable by 2045 Ye s 30% in 2017 40% in 2017
Denver Reduce emissions 80% below 2005 levels
by 2050
100% renewable by 2030 No 28% 28%
San Antonio 100% carbon-neutral community by 2050 40% renewable by 2040 Ye s 22% 36%
Boston 100% carbon-neutral community by 2050 80% carbon-free by 2050 (State law) No 19% 19% (nuclear is
phasing out)
Atlanta Reduce emissions by 20 percent below
2009 levels by 2020 and 40 percent by
2030
100% carbon-free by 2035 No 6% in 2018 26% in 2018
New York City Reduce emissions 80% below 2005 levels
by 2050
None No 5% in 2017 23% in 2017
Columbus Reduce emissions 20% below 2015 levels
by 2020
10% renewable by 2020 Yes** City does not have
this informaon
City does not have
this informaon
Houston None None No City does not have
this informaon
City does not have
this informaon
Dallas None None No City does not have
this informaon
City does not have
this informaon
City Eorts to Reduce Carbon Emissions 9
Oce of the City Auditor
Community-wide carbon reducon and energy goals of reviewed peer cies
Renewable and carbon-free energy percentages as of 2019 unless otherwise stated
SOURCE: Oce of the City Auditor peer city analysis, October 2019
*Nuclear energy is carbon-free but not renewable. This column adds the city’s nuclear energy to its renewable energy.
**Columbus’ municipally owned ulity is small and only serves about 14,000 customers.
10 Oce of the City Auditor
Recommendaons and Management Response
1
Update to Community Climate Plan
The Oce of Sustainability is managing the Community Climate Plan revision process and will provide
regular reports to the Climate and Environment Leadership Team starng in 2020. This will ensure that
City leadership has a complete picture of overarching climate change goals and City-wide mobilizaon
eorts. We will be supported by sta from partnering departments and by community members who
volunteer to parcipate in the process.
The overarching direcon for the plan revision is being led by a Steering Commiee composed of 20
Ausn residents who will volunteer to parcipate in monthly meengs over the course of six months.
Each emissions sector has a dedicated Advisory Group tasked with generang strategies and reducon
targets for emissions from that sector. Each Group will have 3-5 City sta and 10-15 community
stakeholders. Intenonal inclusion of diverse perspecves has been a focus for all groups.
The Steering Commiee will establish a charter and planning assignment for each Advisory Group
to complete. The Steering Commiee will also oversee the enre revision process, ensuring that the
combined work of the process will achieve the necessary climate and equity outcomes over the next
5-10 years.
An Advisory Group has recently been formed which will have a specic focus on Electricaon of
the Transportaon System, partly as a response to Council Resoluon 20190509-020 which directed
sta to “include an analysis of transportaon and electricaon and acon planning in the next
update to the City of Ausn Community Climate Plan.Ausn Energy is leading this Advisory Group.
Organizaons represented include ATD, City of Ausn Fleet Services, CapMetro, Pecan Street,
TXETRA, CAPCOG, Travis County, AISD, and the Energy Foundaon.
Specic Focus on Electricaon of the Transportaon System
Building on the goals of the Ausn Strategic Mobility Plan for a 50 percent mode-split, the updated
Community Climate Plan will focus on the transion to zero-emissions technology with the creaon
of a comprehensive Electric Vehicle plan. In addion to electric vehicle ownership, sta will analyze
opons for shared mobility, eets and public transit, logiscs, and micro-mobility. This eort will
include an analysis of scenarios for dierent EV adopon trends to determine interim greenhouse gas
emissions targets. The transportaon electricaon plan will consider opons for:
establishing an electric-ready ordinance
engaging the community to provide informaon on benets and programs
encouraging large employers to provide workplace employee charging and to electrify their eets
Proposed Implementaon Plan:
Management Response:
Agree
To further the City’s progress to be a carbon-neutral community, the Oce of Sustainability should
ensure that innovave strategies to promote electric vehicles are considered as part of the process
to update the Ausn Community Climate Plan. The Oce of Sustainability should ensure that
responsibility for implemenng these strategies is assigned to the appropriate enty. Potenal
strategies include:
oering rebates for electric vehicles;
establishing an electric vehicle-ready ordinance; and
encouraging large employers to electrify their eets.
11 Oce of the City Auditor
Proposed Implementaon Date: An interim update to Mayor and Council will be provided by February
1, 2020 including lessons learned from EV grid integraon eorts, demand response programs, and EV
rate structures.
A completed Ausn Community Climate Plan including specic updates on Electricaon of the
Transportaon System will be provided by October 1, 2020.
oering rebates for electric vehicles
privately managed EV charging staons, parking, host issues, and access
increasing access to EV charging for residents of mul-family housing, including on-site and o-site
charging opons (such as Level 2 workplace and DC-Fast charging)
dealer engagement and customer experience
shared, Electric, Autonomous Mobility as a service
micro e-mobility
nes for non-EV vehicles parking in public EV-only parking spaces
As part of the Community Climate Plan revision process, the respecve roles for the City of Ausn
and other community stakeholders (e.g. Capital Metro, CAPCOG, CAMPO, school districts, and others)
will be idened. In addion, potenal barriers where the City does not exert direct control, as well as
opportunies for partnerships with other governments and agencies will be idened. Stakeholders
will include City departments such as Ausn Energy, Planning and Zoning, Development Services,
and the Ausn Transportaon Department, as well as external groups such as the Public Ulies
Commission, TXETRA, and others.
Exisng Consideraons
To understand the eorts and context of this recommendaon a few key consideraons should be
incorporated into planning that leverage exisng programs and strategic plans.
Currently Ausn Energy manages over 850 publicly accessible charging staons powered by Texas
wind energy.
Approximately 85% of all EV charging occurs at home driven by customer preference and
convenience.
AE’s renewable energy mix by default connues to get more “green” and the current Resource Plan
includes 65% renewable energy by 2027 (and over 85% carbon-free due to nuclear generaon).
Partnerships with dealers is key as they drive the crical customer experience at the point of sale.
There is currently a dealership engagement program underway led by Ausn Energy in partnership
with Bloomberg Philanthropies American Cies Climate Challenge and local auto dealerships.
Ausn Energy currently has a residenal pilot to encourage “o peak” charging, EV 360.
Ausn Energy has a residenal rebate program for home charging staons with an increase
rebate amount for Wi-Fi enabled systems to lay the groundwork for managed charging pilots and
programs.
Limitaons and Concerns
Electric vehicles and forms of transportaon represent a rapidly evolving marketplace. Not all
vehicle classes currently have alternave electric vehicles available as a replacement. Therefore,
widespread adopon of electric vehicles is dependent on manufacturing, regional market
availability, and emerging technology.
Electric vehicles, when paired with renewable energy sources, represent signicant opportunies to
lower the carbon footprint associated with transportaon. However, this approach alone does not
lower congeson of vehicles that are stuck in trac.
Many of the approaches under consideraon are dependent on consumer choices and behavior.
The City of Ausn can provide programs and awareness, but ulmately key decisions of adopon
will be up to the preference of private individuals and organizaons.
12 Oce of the City Auditor
Audit Standards
Scope
Methodology
To complete this audit, we performed the following steps:
interviewed key personnel in the Oce of Sustainability, Ausn
Energy, Ausn Transportaon Department, and Watershed Protecon
Department;
reviewed City plans relevant to the City’s carbon reducon eorts;
validated data provided by Ausn Energy and Oce of Sustainability
sta;
observed a meeng of the Electric Ulity Commission’s working group
created to update Ausn Energy’s resource plan;
reviewed customer surveys for Ausn Energy’s home electric vehicle
charger rebate program;
reviewed documents related to Fleet Mobility Services’ electric vehicle
purchases and interviewed relevant sta;
reviewed informaon on City outreach eorts to encourage fewer
drive-alone trips;
researched peer cies for informaon on eorts related to renewable
energy and electric vehicles;
evaluated internal controls related to the City’s carbon reducon
eorts; and
evaluated the risk of fraud, waste, and abuse with regard to carbon
reducon eorts.
The audit scope included City eorts to reduce carbon emissions from
2016 onward.
We conducted this performance audit in accordance with Generally
Accepted Government Auding Standards. Those standards require that
we plan and perform the audit to obtain sucient, appropriate evidence
to provide a reasonable basis for our ndings and conclusions based on
our audit objecves. We believe that the evidence obtained provides
a reasonable basis for our ndings and conclusions based on our audit
objecves.
The Oce of the City Auditor was created by the Ausn City
Charter as an independent oce reporng to City Council to help
establish accountability and improve City services. We conduct
performance audits to review aspects of a City service or program
and provide recommendaons for improvement.
City Auditor
Corrie Stokes
Deputy City Auditor
Jason Hadavi
Alternate formats available upon request
Copies of our audit reports are available at
http://www.austintexas.gov/page/audit-reports
Audit Team
Kae Houston, Audit Manager
Kelsey Thompson, Auditor-in-Charge
Andrew Scoggin
Oce of the City Auditor
phone: (512) 974-2805
email: AustinAudit[email protected]
website: http://www.austintexas.gov/auditor
AustinAuditor
@AustinAuditor