NiSource Shares Rise 9.5% Amid Indiana Power Outages, Challenging Regulated Model
16 August 2026

NiSource Shares Rise 9.5% Amid Indiana Power Outages, Challenging Regulated Model

MERRILLVILLE, Indiana, August 16, 2026, 06:05 EDT — U.S. cash markets are shut for Sunday.

  • Early Sunday, an initial tally showed roughly 172,000 customers in northwest Indiana were still without electricity.
  • NiSource shares rose roughly 9.5% over the past week even with the disruption.
  • NIPSCO aims to restore 90% of service by Tuesday, with complete restoration expected by Friday.

NiSource Inc. starts this week amid a notable contrast. Around 172,000 customers of its NIPSCO utility remained without electricity early Sunday. Nonetheless, NiSource shares climbed by approximately 9.5% over the past week.

Stock chart for NYSE:NI

About 34.4% of NiSource’s roughly 500,000 electric customers experienced outages in the initial tally, marking this storm as a significant challenge to operational resilience. The event has yet to trigger a selloff in shares.

Investors seem to be distinguishing between a significant restoration expense and the company’s broader growth outlook. NiSource operates regulated utilities, and its natural gas division spans six states with 3.3 million customers. Although the electric interruption is substantial, its impact remains regionally focused.

Outage checkpointNIPSCO customers outShare of 468,000 tracked customersChange from peak
Thursday peak258,88555.3%
Friday199,45442.6%-22.9%
Sunday, early estimateAbout 172,00036.8%-33.6%
Sources: Reuters reporting carried by The Guardian, Reuters and the current trends tracker. Sunday’s figure is preliminary.

The restoration trend is positive. According to initial Sunday data, roughly 86,900 customers have regained service since the peak reached on Thursday. However, over one-third of customers monitored by NIPSCO were still experiencing outages.

NIPSCO anticipates restoring power to 90% of impacted customers by August 18, with complete restoration aimed for August 21. Workers are prioritizing repairs to transmission lines and substations, followed by service to critical facilities and major distribution lines.

Market measureAugust 7 closeAugust 14 closeWeekly change
NiSource $42.61$46.66+9.5%
S&P 500About 7,7587,785.76+0.4%
Dow Jones Industrial AverageAbout 54,03653,732.41-0.6%
Friday-to-Friday changes calculated from reported closes. Sources: MarketWatch, August 7 and MarketWatch, August 14.

That resilience is significant. The stock rebounded past its pre-storm finish even as repair timelines grew. This indicates investors see the incident as a temporary expense, without an immediate impact on regulated earnings potential.

NiSource’s most recent official forecast backs up that assessment. In May, the company maintained its adjusted earnings guidance for 2026, projecting $2.02 to $2.07 per share. Additionally, it increased its adjusted EPS growth target for 2026–2033 to a range of 9% to 10%.

AnalystFirmRecommendationTargetUpside from $46.66
Sophie KarpKeyBancBuy$507.2%
James ThalackerBMO CapitalBuy$507.2%
Shahriar PourrezaWells FargoBuy$5211.4%
Nicholas CampanellaBarclaysBuy$519.3%
Stephen D’AmbrisiRBC CapitalBuy$5211.4%
Most recent listed actions through July 23; upside calculated from Friday’s close. S&P Global analyst data via StockAnalysis.

Analysts’ price targets provide little scope for unexpected operational shifts. The five latest targets listed above suggest potential gains of 7% to 11%. That margin may shrink if restoration expenses increase or if regulators dispute reimbursement efforts.

Investor referenceVerified figureWhy it matters
Electric customersAbout 500,000Current preliminary outages represent 34.4%
Natural-gas customersAbout 3.3 millionExpands the customer portfolio over six states
2026–2030 capital plan$28.0 billionSupports upgrades to the system and data center investment
Expected data-center customer savingsAbout $1.4 billionKey for regulatory backing of high-demand growth
Sources: NiSource 2025 results and June regulatory update.

The immediate test comes ahead of the earnings call. Investors are monitoring if NIPSCO achieves Tuesday’s target of 90% restoration. They will also observe new storms, crew accessibility, and the state of damaged equipment.

In June, Chief Executive Lloyd Yates stated that infrastructure costs for large-load customers should be covered by those users. He also mentioned that current customers would be granted bill credits as demand increases. This approach was instrumental in obtaining regulatory approval in Indiana.

Risks remain acute. Additional storms may undo restoration progress. Increased repair expenses, customer claims, or delayed regulatory recovery might strain cash flow.

Investors will collect a quarterly dividend of $0.30 on August 20. While the payout does not shield against execution shortfalls, it maintains the outage scenario as part of the larger regulated-return narrative.

TS2 TECH • EXTENDED COVERAGE

Further analysis

What caused NiSource shares to climb even as NIPSCO outages stayed elevated?
NiSource shares rose approximately 9.5% over the past week, compared to a roughly 0.4% increase in the S&P 500. Investors seem to be viewing the storm as primarily a short-term restoration cost concern. The company’s customer base also includes 3.3 million gas users in six states, providing business diversification outside northern Indiana.
What NIPSCO restoration timelines are most important for investors to track?
NIPSCO aims to have power back for 90% of impacted customers by August 18, with complete restoration targeted for August 21. Achieving the initial milestone would indicate that repair work continues to advance despite widespread damage to the grid.
Did the storm prompt NiSource to revise its 2026 earnings forecast?
There has been no update to guidance due to the storm. NiSource most recently forecast 2026 adjusted earnings in the range of $2.02 to $2.07 per share.
Mateusz Kaczmarek

Mateusz Kaczmarek is a financial and technology journalist at TS2.tech. His coverage ranges from stocks and artificial intelligence to semiconductors and developments across global markets. He graduated from the Poznań University of Economics and Business and worked in financial analysis before becoming a business journalist. Follow Mateusz Kaczmarek on Google News.

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