NIPSCO's Neglected Grid Failed 317,000 Customers; 11 Days Later, 33,000 Still Waited
A derecho with 99-mph winds knocked out power to over 60% of Northern Indiana Public Service Company's customer base on August 11, 2026. By day eleven, 33,000 customers remained in darkness, and a class-action lawsuit now alleges the utility's years of deferred vegetation management turned a severe storm into a cascading infrastructure collapse.
An August 11 derecho with winds approaching 99 miles per hour destroyed power lines, transmission equipment, and utility poles across northwest Indiana, initially cutting off 317,000 Northern Indiana Public Service Company (NIPSCO) customers, representing more than 60% of the utility's system and its largest outage event in history[1]. By August 20, approximately 68,000 customers remained without power[1]; by August 22, day eleven, that number had fallen to 33,000[2]. Schools shuttered, businesses lost inventory, families threw away spoiled food, and residents dependent on refrigerated medicine or electrically powered medical equipment were left to fend for themselves. In Gary, the city opened an oxygen refill station because people had been without electricity for six days and could not operate medical equipment[3].
What the storm revealed is not simply bad luck but the consequence of a documented infrastructure strategy: underinvestment in vegetation management paired with continued dividend extraction. A class-action lawsuit filed against NIPSCO alleges the utility failed to perform adequate vegetation management, resulting in repeated and widespread power outages from August 2024 through August 2026, culminating in this month's catastrophe. The lawsuit contends that NIPSCO "prioritized investor profits over safety and grid reliability"[5]. That is not rhetorical accusation; it is a structural claim about how cost-of-service regulation works. NIPSCO, as an investor-owned utility, earns a guaranteed return on capital deployed and can pass most operational costs to ratepayers. The incentive is not to keep the lights on for the least money; the incentive is to collect maintenance and depreciation allowances from customers, spend less than allowed, and distribute the gap as dividends. When the deferred maintenance fails in a storm, the utility then requests a "hardening" or "resilience" surcharge to repair the damage, and ratepayers fund the grid twice.
The vegetation management piece is discoverable. Tree-related outages are the largest source of sustained interruptions on distribution systems nationwide, and the budget line appears in every utility's financial reports. NIPSCO's actual spending on tree trimming, vegetation clearing, and pole maintenance over the past five years belongs in a public docket: a prudence review of what was collected for vegetation management against what was actually spent, paired with SAIDI and SAIFI (outage duration and frequency) trends. If the utility collected maintenance funding and underspent it while distributing cash to shareholders, those hardening costs should disallow shareholder recovery and impose a penalty mechanism tied to future reliability performance. Indiana's Public Utilities Commission has not yet adopted a performance-based regulation framework with symmetric reliability incentives, a penalty for poor SAIDI/SAIFI and a bounded reward for beating target. That is the regulatory gap that allowed NIPSCO to let the grid degrade while shareholders took dividends.
The health and safety toll is the measure. When a utility has to open an oxygen refill station because power outages have lasted six days, the failure is no longer a line-loss; it is a healthcare emergency. The full patient toll, how many people lost medications, could not operate medical equipment, needed emergency care, or had healthcare disrupted, remains unknown and uncounted[3]. Governor Mike Braun directed the Indiana National Guard and secured a presidential emergency declaration making up to $5 million in federal aid available, yet the state is still waiting to hear how NIPSCO will proceed with restoration[2]. That aid came from public coffers. The question for ratepayers and regulators is whether NIPSCO will ask for a hardening surcharge, backed by the same cost-of-service model that incentivized the neglect in the first place.
Municipal and cooperative utilities in Indiana operate with the same weather, the same equipment, and the same regulatory environment as NIPSCO. A comparison of their SAIDI and SAIFI performance against distribution operations and maintenance spending per customer would establish whether NIPSCO's grid is uniquely difficult or uniquely undermanaged. That comparison is the natural control and the basis for a penalty mechanism. If NIPSCO's blue-sky reliability (measured excluding major events) is comparable to in-state municipal systems but its performance under stress is worse, the problem is not the infrastructure; it is the maintenance budget and the dividend policy that starved it.
[1] Indiana’s Blackout Exposes America’s Decaying Power Grid | Armstrong Economics
[2] Braun tells NIPSCO to move faster in Gary, while clergy says state must do more
[3] In Indiana, a weeklong blackout became a health care emergency, and its patient toll is unknown
[4] Class-action lawsuit filed against NIPSCO, alleges lack of vegetation ...
[5] Class action lawsuit filed against NIPSCO over extended power outages
[6] Shockingly vulnerable US power grid could result in 18-month nationwide blackout, expert warns