Vectren : releases corporate sustainability report

News Release

Vectren Corporation One Vectren Square Evansville, IN 47708

FOR IMMEDIATE RELEASE

July 2, 2018

Media contact: Natalie Hedde, [phone] [e-mail]

Vectren releases corporate sustainability report

Evansville, Ind. - Vectren Corporation (NYSE: VVC) has released its corporate sustainability report, Next Generation Sustainability, which reflects the new direction the company is taking as it transitions its electric generation portfolio from nearly total reliance on coal to a fully diversified portfolio of fuels and renewable energy sources while continuing to implement its grid modernization plan that will provide future long term electric supply needs in a safe, reliable manner while dramatically lowering carbon emissions.

"We are excited to release our latest report which reflects the evolving direction Vectren is taking in diversifying our electric generation portfolio and modernizing our electric grid," said Vectren Chairman, President and CEO Carl Chapman. "This report illustrates that sustainability is a key part of Vectren operations, and these plans, along with our continued gas infrastructure investments, ensure we will continue to meet the needs of our customers."

Some key points from the report include:

• • Vectren's Smart Energy Future strategy plan consisting of investments of $6.5 billion includes investments in generation transition, electric grid modernization and gas infrastructure

• • Vectren's plan will result in system-wide carbon emission reductions of 60% by 2024

• • Vectren achieved another year of solid earnings growth in 2017, extending its record of consistent earnings growth to seven years

• • Vectren raised the dividend 7.1% in November 2017, marking 58 consecutive years of dividend increases

• • Vectren continues execution of an integrated, multi-year initiative focused on technologies to improve the customer experience

• • Vectren continues to implement its Human Equity strategy which aims to ensure each employee feels valued, included and is an integral part of organizational success

"We will continue to strive to be a leader in energy efficiency and environmental stewardship and believe these efforts toward sustainable growth will remain an important contributor to long-term corporate performance," said Angila Retherford, Vectren's vice president of environmental affairs and corporate sustainability.

This is Vectren's sixth annual sustainability report, and it was developed using the Global Reporting Initiative (GRI) Guidelines reporting framework with the Electric Utilities Sector Supplement. This report is "In Accordance" with the GRI G4 Guidelines - Core option. GRI is a non-profit organization that promotes economic sustainability and produces one of the world's most prevalent standards for sustainability reporting. The 'In Accordance' designation is achieved by voluntarily reporting information on company operations that go beyond the federal requirement. Adherence to the GRI guidelines creates shared value, demonstrates Vectren's pledge to sustainability and denotes transparency in operations.

To view the complete report,click here or visitwww.vectren.com/sustainability.

About Vectren

Vectren Corporation (NYSE: VVC) is an energy holding company headquartered in Evansville, Ind. Vectren's energy delivery subsidiaries provide gas and/or electricity to more than 1 million customers in adjoining service territories that cover nearly two-thirds of Indiana and about 20 percent of Ohio, primarily in the west central area. Vectren's nonutility subsidiaries and affiliates currently offer energy-related products and services to customers throughout the U.S. These include infrastructure services and energy services. To learn more about Vectren, visitwww.vectren.com.

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