Duke Energy's $103 Billion Capital Plan Targets Data Center Load in Indiana

Daniel BurkePublished every day

Duke Energy raised its five-year capital plan 18 percent to $103 billion, with another $5 billion to $10 billion earmarked for large loads in Indiana and Florida. Duke already holds 7.8 gigawatts of signed data center agreements and 15.4 gigawatts more in advanced discussion. That spending enters the rate base Indiana commercial and industrial customers pay into, and it lands while Duke is separately asking the IURC to narrow associational standing, the legal basis Citizens Action Coalition uses to intervene on behalf of its members in Duke rate cases. Large load tariffs, like the ones AEP uses, are supposed to make data centers carry their own stranded cost exposure if they leave early. Whether Duke's Indiana terms do the same gets tested in the next rate case, likely in the 2027 to 2029 window. Ask whether your rate class picks up a larger share of cost allocation if those large load contracts carry exit fees that fall short of the full buildout cost.

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Will Duke Energy's capital plan raise my electric bill?

Duke's $103 billion plan, including $5 billion to $10 billion aimed at data center load, enters the rate base that Indiana commercial and industrial customers pay into, and the next rate case, likely in the 2027 to 2029 window, will determine how much of that cost lands on your rate class versus large load customers.

Briefing note

Duke Energy Corp. (NYSE: DUK), headquartered in Charlotte, North Carolina, raised its 2026 adjusted profit guidance to $6.55-$6.80 per share (from $6.31) on Feb. 10, citing AI data center, electrification, and advanced manufacturing demand, and lifted its five-year capital plan 18% to $103 billion. CEO Harry Sideris and CFO Brian Savoy identified $5 billion to $10 billion in potential incremental capex beyond that plan, concentrated primarily in Indiana and Florida to serve large loads, with 7.8 GW of signed data center agreements including Microsoft, Amazon, Digital Realty, and QTS.

Impact: MISO's 2026 load forecast puts Indiana's grid zone (LRZ 6) on track for 60% peak demand growth (the third-fastest in the entire MISO footprint) which is why Duke, AEP (now at a $78 billion capex plan with its own large-load tariffs), and NIPSCO are all simultaneously chasing the same hyperscaler commitments in-state, per NIPSCO's own IURC testimony about inquiries running 'hundreds to thousands of megawatts.' The less-visible fight is procedural: a consumer advocacy group (CAC) is fighting Duke's bid to redefine 'associational standing' at the IURC, a move that, if it succeeds, would remove the most active challenger to Duke's future Indiana rate cases just as this capex wave hits the rate base.
Watch: The IURC's ruling on Duke's associational-standing challenge against CAC, and Duke's next Indiana rate case filing (expected in the 2027-2029 window based on historical cadence).

From the brief, October 4, 2026

IURC Eminent Domain for LEAP Transmission Lines Clears Despite OUCC Objection
Duke Energy's $103 Billion Capital Plan Targets Data Center Load in Indiana
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