How Large Customer Agreements Shape OGE Energy's Growth Journey 2026

How large customer agreements influence OGE Energy’s future growth prospects

Large customer agreements (notably long-term contracts with high-load data center customers such as Google) appear to be a structural driver of OGE Energy’s growth outlook by (1) stabilizing and expanding demand, (2) improving the economics of serving that demand, (3) shaping regulatory and pricing frameworks, and (4) reducing certain stranded-cost and credit risks—thereby supporting both capital investment and financial planning.

1) They create a durable demand tailwind that supports load growth

OGE’s management frames large-load customer contracting as a “meaningful growth tailwind” alongside “historically strong” demand, including “approximately 24% load growth over the past 5 years.” ¹ In 2026 specifically, OGE expects to file energy service agreements with Google for previously announced data center facilities in Muskogee and Stillwater. ¹ Management also characterizes the planned actions as “setting the course for the rest of this decade.” ²

Growth impact: Larger contracted loads increase the probability that incremental generation/transmission can be built and utilized as planned, reducing the risk that demand growth comes in weaker than expected.

2) They improve the economics of fixed-cost infrastructure by spreading costs over a larger base

OG&E (the operating utility within OGE Energy) explains that adding a “large high load factor customer” allows it to “spread fixed system costs over a significantly larger customer base,” which creates “downward pressure on rates for existing customers.” ³

Growth impact: If large customers reduce rate pressure for incumbents, that can help management secure continued regulatory/political support for further investment—making future growth projects easier to approve and sustain.

3) They include protections that mitigate stranded-cost risk and support long-term planning

Management emphasizes that these agreements are structured with “robust long-term customer protections,” including:

• “multiyear commitments with minimum charges”
• “exit provisions to mitigate stranded cost risk”
• “strong credit support to fully back customer obligations.” ³

In addition, management describes the regulatory/contract mechanics as requiring customers to pay upfront charges (consistent with tariff/legislation), with “pricing structures and charge allocations” designed to “preserve or protect the existing customer base.” ⁴

Growth impact: When customer agreements reduce the downside of capacity and system investment (stranded cost risk), management can more credibly invest ahead of demand and pursue a longer planning horizon—supporting growth rather than merely responding to it.

4) They help enable incremental generation and capacity additions tied to customer demand

OGE’s 2026 growth plan explicitly incorporates capacity secured through large-customer-related arrangements. Management states that, working with Google, it secured generation capacity from “2 solar facilities” under construction, totaling “600 megawatts of nameplate capacity,” and that OGE will request preapproval from Oklahoma and Arkansas commissions for these “CPAs.” ³ Management also reports that it is filing “long-term special contracts with Google” with the Oklahoma Corporation Commission to serve multiple data centers. ²

OGE further highlights system-strengthening capacity additions (including generation and storage milestones), stating that “including the aforementioned capacity agreements,” total “1.7 gigawatts of capacity strengthens our system” and “positions us well for continued growth.” ²

Growth impact: Large customer agreements don’t just increase demand—they appear to be integrated with resource and capacity procurement plans, which supports execution of the growth program.

5) They interact positively with regulation via large-load tariff frameworks

OGE expects to finalize and file a “stand-alone large load tariff” in Oklahoma no later than “July 1,” describing it as a “clear, durable regulatory path” for future large-load activity. ⁵ Management also discusses protecting customer affordability while sequencing rate filings across Oklahoma and Arkansas, aiming to avoid the perception that large-load-driven investment “is crowding too much on customer bills at once.” ⁶

Growth impact: A defined tariff and regulatory path makes future contracting and project approvals more predictable—an important ingredient for sustained growth in regulated utilities.

6) They support financing credibility and capital planning discipline

OGE indicates it has completed key financing steps and remains confident in execution, noting that a “debt issuance at the electric utility” in April “satisfies our financing needs for 2026.” ³ OGE also references equity flexibility through forward equity agreements (“approximately 4.6 million shares”). ³

Management further expects “FFO to debt around 17% over the planning horizon.” ³ Moody’s also cited constructive regulatory and balance sheet actions as supportive, affirming ratings and revising outlooks to stable, which provides external validation of the capital plan context. ³

Growth impact: Large customer agreements can improve the credit/investment profile indirectly by lowering demand and cost-recovery uncertainty (through minimum charges, exit provisions, and credit support). ³ That reduces the friction for financing future buildouts needed for growth.

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Bottom line

Based on OGE’s commentary, large customer agreements influence future growth prospects by locking in durable high-load demand, improving unit economics by spreading fixed costs, embedding protections that mitigate stranded-cost and credit risks, and creating a more predictable regulatory pathway (via large-load tariff structures and commission processes). ³⁵⁴²¹ These factors collectively support OGE’s ability to execute on generation, storage, and transmission plans that management says will “set the foundation for” multiple years of results. ²⁷