Unitil CorporationNYSE: UTL

2025 Edison Electric Institute Conference Presentation

· Issued by Unitil Corporation

EEI Financial Conference

November 9 to 11, 2025



Financial Results and Business Update

Strong financial results and delivering on business initiatives



Financial Results
  • Quarterly Adjusted Net Income(1) of $0.4 million or $0.03 per share

    • Increase of $0.01 per share relative to same period in 2024

  • Year-to-Date Adjusted Net Income(1) of $33.5 million or $2.03 per share

    • Increase of $1.4 million, or $0.03 per share relative to the first nine months of 2024

      Business Updates
  • Maine Natural Gas ("MNG") acquisition closed October 31, 2025

  • Completed integration of Bangor Natural Gas ("BNG")

  • Electric rate case in NH progressing on schedule; temporary rate award of $7.8M effective in Q3 2025

  • August equity issuance satisfied equity need for BNG and MNG acquisitions



  • Current FFO/Debt approximately 17%

    Looking Forward

  • Reaffirming our current year earnings guidance

  • Rate base growth of 10% including acquisitions(2)

  • Regulatory approval of Aquarion acquisition expected in Q4 2024



  1. Adjusted Net Income and Adjusted EPS are non-GAAP financial measures, reconciliations from non-GAAP financial measures to GAAP financial measures are provided at the end of the presentation

  2. Growth from 2024 to 2029

SLIDE 3

Acquisitions Update


  • Expected Connecticut, Massachusetts and Maine orders approving the transaction in Q4

  • Received approval in New Hampshire

Aquarion Water

  • Transaction closed October 31, 2025

  • Integration activities ongoing

Maine Natural Gas (MNG)

  • Transaction closed January 31, 2025

  • Integration has been completed

Bangor Natural Gas (BNG)

Closed on two natural gas distribution companies; Aquarion Water acquisition proceeding on schedule



Highlights

BNG

MNG

Combined

Price

$71M

$86M

$157M

Rate Base(1)

$59M

$69M

$128M

Customers

8,800

6,300

15,100

Acquisitions Enhance Growth Profile

Recently announced acquisitions are expected to be earnings accretive over the long-term

Long-Term Guidance

EPS Growth

5.0% - 7.0%

Rate Base Growth

6.5% - 8.5%

Total Shareholder Return

8.0% - 10.0%(1)

Accelerating Rate Base Growth(2)

$1.4

$1.5

$1.6

$1.7

$1.8

$1.1



$2.0

$1.5

Acquisitions will accelerate long-term EPS and Rate Base growth

Billions

$1.0

17% Additional Rate Base

17% Additional Gas Customers

$0.5

23,000 Water Customers in MA and NH

15%

Gas Margin Increase

  1. Total Shareholder Return assumes dividend yield of 3.0% and a constant Price-to-Earnings ratio

  2. Forecast assumes acquisitions receive necessary regulatory approval

$0.0

2024A 2025F 2026F 2027F 2028F 2029F

Existing Operations
Acquisitions

Significant Investments in Electric Operations

Utility-scale solar complete and Advanced Metering Infrastructure replacement on schedule

New Hampshire Solar Project Completed



Kingston (NH) Solar Project Fully Operational

  • New Hampshire Energy Week's "Project of the Year"

  • Facility is consistently producing energy in line with or above modeled expectations

  • Proposed rate base treatment for recovery of and on project investment in the current UES rate case

    Advanced Metering Infrastructure

Significant Multi-Year Project

  • Replacing existing electric meters with new state of the art meters empowering customers and supporting grid optimization

  • MA customer meter exchange largely complete

  • Meter exchange planned to begin in 2026 and completed by 2027 in NH

  • Combined capital investment of approximately $40 million; capital tracker in place in MA

Corporate Sustainability and Responsibility

Unitil recently released its 2025 report with all key metrics on target



Safety and Reliability

Gas Emergency

Leveraging Fleet Data for

91%

0.92

People

90%

Response Time Within 30 Minutes

Days Away, Restricted or Transferred (DART)

Overall Customer Satisfaction

Sustainable Decision Making

Implemented telematics on all Company-owned vehicles enabling greater efficiency

91%

84%

Of Employees are proud to work for Unitil

Employee Satisfaction Score

Third Quarter 2025 Financial Results

Net Income and Earnings Per Share

Earnings Summary(1)

Three Months Ended September 30

Nine Months Ended September 30

2025

2024

2025

2024

Net Income (Loss) ($ millions)

($0.3)

$0.00

$31.2

$31.5

Adjusted Net Income ($ millions)

$0.4

$0.4

$33.5

$32.1

Earnings Per Share

($0.02)

$0.00

$1.89

$1.96

Adjusted Earnings Per Share

$0.03

$0.02

$2.03

$2.00



  1. Adjusted Net Income and Adjusted EPS are non-GAAP financial measures, reconciliations from non-GAAP financial measures to GAAP financial measures are provided at the end of the presentation

    Electric Volume and Adjusted Gross Margin Variances 86,600

    Natural Gas Customers

    (1) Adjusted gross margin is a non-GAAP financial measure, reconciliations from non-GAAP financial measures to GAAP financial measures are provided at the end of the presentation

    Reflects higher rates and customer growth

    UES temporary rate award of $7.8 million took effect July 1, 2025 FGE PBR rate adjustment of $1.6 million took effect July 1, 2025

    •

    •

    •

    Adjusted Gross Margin Increased $4.7 Million(1)

100% of electric customers decoupled

~560 additional customers, including 126 C&I customers Actual unit sales decreased due to cooler summer weather

•

•

•

Unit Sales and Customers

Year-to-Date variances in units, customers, and adjusted gross margin

Electric Operations

Adjusted Gross Margin(1)

Unit Sales

Customers

5.8% Increase

1.0% Decrease

0.5% Increase

Gas Volume and Adjusted Gross Margin Variances

Year-to-Date variances in units, customers, and adjusted gross margin

Gas Operations

Adjusted Gross Margin(1)

Unit Sales

Weather Normalized Unit Sales

Customers

Total

16.5% Increase

22.2% Increase

15.4% Increase

10.8% Increase

Existing Operations (Excluding BNG)

10.1% Increase

7.7% Increase

1.8% Increase

0.7% Increase

Unit Sales and Customers

  • 55% of gas customers decoupled(2)

  • Approximately 9,420 additional customers

    • 8,820 from BNG

    • 600 from existing operations

Adjusted Gross Margin Increased $19.1 Million(1)

  • Higher rates and customer growth of $17.1 million, and effect of colder winter weather of $2.0 million

  • Favorable effects from recent rate case awards for FGE and GSGT

  • Weather normalized sales for Northern Utilities' Maine division, Unitil's largest non-decoupled service area, increased 2.4%

86, 600

Natural

Gas Customers

  1. Adjusted gross margin is a non-GAAP financial measure, reconciliations from non-GAAP financial measures to GAAP financial measures are provided at the end of the presentation

  2. Calculation based on customer counts as of September 30, 2025

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