Energy / Regulated Utility · Deep dive

Exelon Corporation

The nation's largest pure-play regulated transmission and distribution utility — six state-franchised electric and gas companies (ComEd, PECO, BGE, Pepco, Delmarva, ACE) serving 10.7M customers across IL/PA/MD/DC/DE/NJ — with a $41.7B 2026-2029 capital plan pointed at PJM data-center load, a 25 GW data-center interconnection pipeline (Q2 2026), and 5-7% EPS CAGR guidance through 2029; the tail is affordability (PECO's April 2026 $510M rate-case withdrawal) and the ComEd bribery DPA hangover.

well positioned

A $41.7B 2026-2029 capital plan driving ~7-8% rate-base CAGR (16% in transmission alone) into three of the country's densest data-center demand pockets — ComEd/Chicago, Pepco/Northern Virginia and BGE/Baltimore — converts hyperscaler load into regulator-approved earnings faster than PECO affordability politics and the residual ComEd DPA reputational drag can compress the multiple.

My take ★★ Very interesting ★ Interesting − Maybe ✗ Not interesting

Snapshot

Exelon is the largest pure-play regulated transmission and distribution utility in the US, holding six state-franchised opcos — ComEd (northern Illinois), PECO (southeastern Pennsylvania), BGE (central Maryland), Pepco (DC and suburban Maryland), Delmarva Power (Delaware and Eastern Shore), and Atlantic City Electric (South Jersey) — serving ~10.7M electric and gas customers with ~20,000 employees. TTM revenue is ~$24.8B and market cap ~$46B (August 2026). Q2 2026 adjusted EPS came in at $0.43, in-line with consensus and up ~10% YoY; FY2026 guidance of $2.81-$2.91 was reaffirmed alongside a 5-7% EPS growth target through 2029. CEO Calvin Butler — the first Black CEO of a major US holding utility — is running a $41.7B 2026-2029 capital plan that leans hard into transmission (16% rate-base CAGR) to serve a 25 GW data-center interconnection pipeline concentrated in ComEd, Pepco and BGE territory. The counter-narrative: PECO withdrew a $510M rate hike in April 2026 under gubernatorial pressure, and ComEd is still working through the tail of its 2020 $200M bribery deferred prosecution agreement.

Founding story

The modern company was born from a stock-for-stock merger. Unicom Corporation (parent of Commonwealth Edison) and PECO Energy completed their combination on October 20, 2000, and began trading as Exelon Corporation (then NYSE: EXC, now NASDAQ: EXC) on October 23, 2000. Unicom’s John Rowe and PECO’s Corbin McNeill served as co-CEOs at formation; Rowe emerged as sole CEO in 2002 and ran the company until March 2012.

The pre-history is older and more consequential. PECO — Philadelphia Electric Company — was founded in 1902 through consolidation of Philadelphia’s early electric franchises. Commonwealth Edison was formed in 1907 by Samuel Insull, the London-born clerk to Thomas Edison who moved to Chicago in 1892, merged Chicago Edison with Commonwealth Electric Light & Power, and invented the modern regulated-utility model: state-granted monopoly franchise, all-in service to residential and industrial customers, rate-of-return regulation, load diversity across time-of-day. By 1907 essentially all of Chicago’s electricity flowed through Insull’s meters; by 1920 ComEd had 6,000 employees and ~500,000 customers. Insull’s holding-company empire collapsed in the 1932 utility crash and directly prompted the 1935 Public Utility Holding Company Act — but the regulated-utility contract he wrote is the one Exelon still operates under.

Christopher Crane, a nuclear operator who ran Exelon Generation, became CEO on completion of the Constellation acquisition in March 2012 and led the 2016 Pepco Holdings deal and the 2022 Constellation spin. Calvin Butler — Exelon Utilities COO, ex-BGE CEO — took over January 1, 2023.

How it works

Exelon does not own generation. Since the February 2022 spin-off of Constellation Energy, the company is a pure-play regulated transmission and distribution (T&D) utility. Each of the six opcos operates under an exclusive state franchise; a state Public Utility Commission (or the DC Public Service Commission) grants Exelon the right to serve customers in a defined territory at approved rates. Capital placed into service — poles, wires, substations, transformers, gas mains, smart meters, transmission lines — becomes “rate base,” on which the commission lets Exelon earn an approved return on equity (~9.5-10.5% band across jurisdictions) and recover depreciation, operations and maintenance, taxes, and interest through customer bills.

The mechanics matter. In each rate case the utility files a projected revenue requirement; interveners (consumer advocates, industrial customers, environmental groups) push back; the commission issues a decision, usually staged over multiple years. Illinois and Maryland have moved to multi-year rate plans (MRPs) that pre-approve capex and rate increases over a 3-4 year window in exchange for performance metrics; Pennsylvania and DC still run traditional test-year rate cases. Fuel, purchased power, and certain reliability costs run through automatic riders and pass through to customers dollar-for-dollar. Because Exelon owns wires, not plants, its earnings are essentially decoupled from commodity prices — and the growth algorithm reduces to: rate-base growth × allowed ROE × equity ratio.

That math is why the 25 GW data-center pipeline matters. Every gigawatt of new load requires substations, distribution feeders, and — increasingly — brand-new 500 kV / 765 kV transmission. All of it is rate-base capex earning ~9.5-10% for the next 30-40 years.

Product and business overview

Six regulated opcos, one holding company. Commonwealth Edison (ComEd) — ~4.2M electric customers across northern Illinois; delivery-only after the 1997 Illinois restructuring. PECO Energy — ~1.7M electric and ~550,000 gas customers in southeastern Pennsylvania (Philadelphia, Bucks, Chester, Delaware, Montgomery, and York counties). Baltimore Gas and Electric (BGE) — ~1.3M electric and ~700,000 gas customers in central Maryland. Pepco — ~900,000 electric customers in DC and suburban Maryland. Delmarva Power — ~561,500 electric and 140,000 gas customers in Delaware and the Eastern Shore. Atlantic City Electric (ACE) — ~572,000 electric customers in South Jersey. Total: ~10.7M customer accounts, all inside PJM Interconnection.

On top of the regulated opcos sits a small unregulated business — competitive retail supply exited long ago, so what remains is transmission co-development (the NextEra/Exelon MidAtlantic Resiliency Link, PJM Board-approved February 13, 2026, a ~220-mile 765 kV line moving ~7 GW between Pennsylvania and West Virginia) and grid-services technology. The company reports as a single T&D segment.

Business model and pricing

Revenue is booked as delivery service (~85%+) plus commodity pass-through and small competitive services. Rates are set by state commissions using a standard regulated formula: allowed ROE × equity portion of rate base + debt service + O&M + depreciation + taxes + riders. Allowed ROEs across Exelon’s five jurisdictions cluster in the 9.5-10.5% band; BGE’s most recent request (filed 2026) sought a 10.4% ROE on a $156M electric increase. Equity ratios sit at ~50-54%. Q2 2026 adjusted EPS of $0.43 was in-line with the Zacks consensus; revenue of $5.97B beat by ~5%. FY2026 adjusted EPS guidance is $2.81-$2.91 (reaffirmed on the Q2 call). The long-term algorithm: 5-7% annualized EPS growth through 2029, guided to the top of the range, at ~7-8% rate-base CAGR (16% transmission alone). The dividend was $0.42 quarterly ($1.68 annualized) with ex-date September 4, 2026 and a yield of ~3.7%; payout ratio ~60% of adjusted EPS.

Traction over time

Market analysis

The US regulated-utility TAM is defined by state franchise, not open market — but the growth is now clearly AI. BofA’s 2026 numbers peg data-center-driven US load growth at a ~4.1% CAGR through 2030, with a >100 GW supply-demand gap. Exelon’s footprint captures three of the country’s densest demand pockets. ComEd disclosed data-center load growth at a ~27% CAGR going forward in its Q3 2025 materials (up from ~9% historically). Pepco sits adjacent to Northern Virginia (world’s densest data-center cluster). BGE serves Baltimore including the AWS US-East expansion ring. In aggregate Exelon reported a ~43 GW data-center interconnection pipeline in May 2025 that grew to 36 GW mid-year, then trimmed to ~25 GW in Q2 2026 as high-probability filters were applied. Even at 25 GW that is more than 2x Exelon’s current summer peak, and every gigawatt that actually energizes becomes rate-base capex earning ~9.5-10%.

Structural constraints work in Exelon’s favor: PJM interconnection queues run 4+ years; state siting for new transmission is slow; and the federal preference for regulated-return transmission (versus merchant lines) after FERC Order 1920 favors incumbent opcos with rights-of-way. What throttles the story is affordability politics. Every dollar of new rate base lands on residential bills, and 2025-2026 saw a bipartisan pushback from Pennsylvania (Shapiro), Maryland (PSC halving BGE’s 2024-2026 request), New Jersey and Illinois. The ceiling isn’t the load — it’s the political tolerance for bill increases.

Competitive intel

Regulated utilities do not compete for customers inside a franchise territory — the state settles that. They compete for capital, regulatory goodwill, and share of the same institutional utility bucket. Duke Energy (~8.6M electric customers, $103B 2026-2030 capex, 7.8 GW signed hyperscaler ESAs) is the most-cited scale peer; Duke owns generation, Exelon doesn’t, so Duke’s rate-base ramp is generation-heavy where Exelon’s is wires-and-transmission. Southern Company has Vogtle 3 & 4 online, feeding Georgia hyperscalers with firm clean nuclear — the exact option Exelon spun off in 2022. NextEra is complicated: NEER’s ~300 GW pipeline can sell behind Exelon’s meter through PPAs, but NextEra Energy Transmission is Exelon’s partner on the MidAtlantic Resiliency Link. Dominion owns Virginia and effectively sets the political and ROE ceiling for Pepco and BGE. DTE runs the same rate-base compounding playbook adjacent MISO, at similar multiples. PPL is the direct PA neighbor and a live comp for PECO’s affordability arc. Eversource is the pure-T&D structural analog and the multiple-compression cautionary tale after Massachusetts rate battles.

The most disruptive competitor is Exelon’s own former subsidiary. Constellation Energy — the 2022 spin, now ~$70B+ market cap — signed direct hyperscaler deals for Three Mile Island (Microsoft) and is the template for hyperscaler self-supply that routes load around Exelon’s rate base. Behind-the-meter players like Talen (up to 1,920 MW to AWS off Susquehanna through 2042) and Bloom Energy prove the same point: every campus that self-supplies never enters Exelon’s rate base.

History and evolution

• 1902 — Philadelphia Electric Company (PECO) incorporated.
• 1907 — Samuel Insull merges Chicago Edison and Commonwealth Electric into Commonwealth Edison; regulated-monopoly model born.
• 1935 — Public Utility Holding Company Act, direct response to the 1932 Insull collapse.
• 2000-10-20 — Unicom (ComEd parent) + PECO merger closes; Exelon trades on NYSE from October 23. Co-CEOs John Rowe and Corbin McNeill.
• 2002 — Rowe becomes sole CEO.
• 2012-03-12 — $7.9B all-stock Constellation Energy acquisition closes; Christopher Crane becomes CEO; BGE joins the family; Exelon becomes largest US competitive generator.
• 2016-03-23 — $6.8B Pepco Holdings acquisition closes; adds Pepco, Delmarva Power, Atlantic City Electric; Exelon becomes largest US T&D utility by customer count.
• 2020-07-17 — ComEd enters $200M bribery deferred prosecution agreement with DOJ; admits nine-year scheme (2011-2019) hiring associates of Illinois Speaker Michael Madigan to influence electricity rate increases. Largest criminal fine in Northern District of Illinois history.
• 2022-02-01 — Constellation Energy spin-off completes; Exelon becomes pure-play T&D.
• 2023-01-01 — Calvin Butler succeeds Crane as CEO.
• 2023-05-02 — ComEd Four (Pramaggiore, McClain, Hooker, Doherty) convicted on all counts. (April 2026: Seventh Circuit orders release and new trial for two defendants under narrowed federal bribery statute.)
• 2024-2025 — Michael Madigan convicted February 2025 on 10 federal corruption counts; sentenced to 7.5 years plus $2.5M in fines.
• 2025-12-08 — PJM selects Exelon/NextEra 220-mile 765 kV MidAtlantic Resiliency Link in its 2025 Regional Transmission Expansion Plan.
• 2026-02-12 — Exelon reports Q4 2025; raises 2026-2029 capex plan to $41.7B, shifting $1.5B into transmission and $1.1B out of distribution; 16% transmission rate-base CAGR target through 2029.
• 2026-03-30 — PECO files $429M electric (+12.5%) and $81M gas (+11.4%) rate cases.
• 2026-04-16 — PECO withdraws both after direct pressure from Governor Josh Shapiro and public backlash; Shapiro’s office frames it as a $510M consumer save (up to $34/month per customer).
• 2026-05-06 — Butler tells Q1 2026 analysts “business as usual is not an option,” commits to $350M of incremental 2027 O&M savings.
• 2026-Q2 — Adjusted EPS $0.43 in-line; DC pipeline trimmed to 25 GW (from 43 GW disclosed in May) as high-probability filter applied.

What people say

The case for. Sell-side consensus into H2 2026 is Buy/Hold; Q2 2026 delivered an in-line EPS and a revenue beat with 2026 guidance reaffirmed. The pitch is mechanical: ~7-8% rate-base CAGR at ~9.5-10% ROE across five regulators, 16% growth in the transmission slice, and the $41.7B plan is now transmission-tilted directly into a 25 GW PJM data-center pipeline. The PJM 765 kV win with NextEra (approved February 13, 2026) is the first big proof-of-concept for competitive transmission earnings on top of the regulated opcos. Exelon has no wildfire liability like PG&E or Xcel, no merchant power exposure since 2022, and no coal retirement risk — the earnings stream is regulated-wires, decoupled from commodities.

The complaints. Three lines of critique. First, PECO affordability — the April 16, 2026 withdrawal of a $510M rate case (12.5% electric, 11.4% gas) after Governor Shapiro publicly leaned on the company is the clearest signal that rate-case politics in Pennsylvania have shifted. If PECO cannot raise electric distribution rates in the next 12-18 months, it becomes the tail on Exelon’s growth algorithm. Maryland regulators similarly cut BGE’s 2024-2026 multi-year plan by roughly half in December 2025, and BGE’s August 2026 $156M refile is drawing organized activist opposition (“Enough is enough” protests, per Maryland Matters). Second, the ComEd DPA hangover — the July 2020 $200M fine plus the May 2023 ComEd Four convictions plus Madigan’s February 2025 sentencing means Illinois political risk is priced into every ComEd rate filing. The Seventh Circuit’s April 2026 order for a new trial in the ComEd Four case reopens the story rather than closing it. Third, the Constellation-shaped hole — the highest-growth asset Exelon owned (nuclear) is now the highest-growth listed utility (CEG ~$70B+). Any hyperscaler behind-the-meter deal that bypasses Exelon’s opcos — Talen/AWS, CEG/Three Mile Island, Bloom on-pad — is a permanent load loss to Exelon’s rate base. On Glassdoor, Exelon utilities typically pull 3.5-3.8/5 with recurring themes of good benefits, long-tenure stability, slow bureaucratic pace, and mixed reviews of the C&I customer function.

Outlook: well positioned or at risk?

Well-positioned — because the pure-T&D pivot after the 2022 Constellation spin gave Exelon exactly the earnings profile that AI-era rate-base compounding rewards, and the political tail is manageable rather than existential. A $41.7B 2026-2029 capital plan at ~7-8% rate-base CAGR (16% in transmission) at ~9.5-10% allowed ROE across five commissions mechanically supports the 5-7% EPS growth guide even before the data-center pipeline converts. The 25 GW Q2 2026 pipeline — post-filtering — is more than 2x current summer peak, concentrated in three of the highest-value PJM sub-regions (ComEd/Chicago, Pepco/NoVa-DC, BGE/Baltimore). The February 2026 PJM 765 kV award with NextEra opens a competitive-transmission earnings lane that FERC’s Order 1920 environment favors.

Three counter-arguments deserve weight. PECO affordability — the April 2026 rate-case withdrawal shows that the political ceiling on residential bill increases in PA is real and lower than the company expected; if PECO cannot re-file successfully in 2026-2027 the growth math loses a whole opco. ComEd DPA reputational tail — the ComEd Four re-trial and Madigan appeal keep the Illinois political risk in the headlines through 2026-2027, tightening PUC scrutiny of every ComEd filing. Hyperscaler self-supply — CEG, Talen and Bloom prove hyperscalers can and will bypass regulated opcos, and every gigawatt behind-the-meter is a gigawatt that never lands in Exelon’s rate base. On balance the rate-base compounding wins over a 3-5 year view — the multiple already reflects the affordability and DPA drag — but the buyer is paying a regulated-utility multiple for a growth story that depends on PJM approvals landing, state commissions staying constructive, and residential bills not becoming a state-election issue.

How to attack it

The wedge is speed to power for hyperscalers, not price for households. Exelon owns no generation and depends on PJM’s 4+-year interconnection queue to bring new supply to its 25 GW pipeline. A challenger stacking behind-the-meter aeroderivative gas turbines, fuel cells and batteries at a Chicago, Baltimore, DC or Camden campus can energize inside 18 months while Exelon’s line-side solution slips into 2029-2030. Constellation’s Three Mile Island / Microsoft deal and Talen’s up-to-1,920 MW Susquehanna / AWS PPA are the templates already deployed in the Mid-Atlantic; every additional bypass deal permanently removes load from Exelon’s rate base without any regulatory recourse. A well-funded merchant-power startup positioned as “energize your Chicago or NoVa campus by 2027” strips the growth story faster than the opcos can file for it.

The second seam is affordability politics. PECO’s April 2026 $510M withdrawal, Maryland’s BGE haircut and Illinois’s post-DPA scrutiny each show that residential ratepayers are the political counter-weight to the data-center bill. A C&I microgrid / VPP company that lets Meta or Google self-supply — while offering communities demand-response revenue-sharing — hands consumer advocates a fresh campaign against the incumbent tariff and hands legislators a “who benefits” story to run against Exelon rate filings. Community-solar aggregators (Nexamp, Arcadia) already exploit this dynamic in Illinois and Maryland.

Product gaps a well-funded attacker can exploit: (1) no generation optionality — every megawatt Exelon needs must be procured from PJM or a merchant developer, exposing customers to capacity auction volatility; (2) the ComEd DPA reputational tail — political air-cover for any competitor framed as “cleaner than Exelon”; (3) PECO’s gas book — Pennsylvania’s 2026 decarbonization pressure makes the gas-distribution business a stranded-asset argument that a heat-pumps-as-a-service player (Sealed, BlocPower) can weaponize; (4) PJM queue exposure — the entire growth story is one PJM reform bill or two failed capacity auctions away from re-pricing. Exelon cannot cut price to defend — its earnings are the price.

Adjacent-segment play

Exelon’s core capability — designing, building and operating T&D under five regulators, plus a decade of large-load tariff design and the industry’s deepest data-center interconnection queue — is directly repackageable for buyers Exelon will never serve. The clearest adjacency is T&D-as-a-service for hyperscaler campuses: municipal utilities, rural co-ops (which serve ~30% of US customers), and data-center operators outside Exelon’s five states all need engineered substations, load studies, protection design and interconnection consulting that Exelon Utilities does in-house every day. Salt River Project, TVA-adjacent co-ops, and hyperscaler in-house teams are the buyers. A spin of Exelon’s transmission group into a regulated-transmission-only entity (à la ITC Holdings, which sold to Fortis for $11.3B in 2016) would monetize at a higher multiple than the diversified holding — competitors doing that variant include NextEra Energy Transmission, Berkshire’s TransAmerica-adjacent transmission plays, and LS Power.

The second axis is unregulated grid-services software. Exelon Utilities runs one of the largest AMI / smart-meter deployments in the country (10.7M endpoints), one of the deeper distribution-automation stacks, and — per its 2025 AI disclosures — a maturing autonomous grid-operations software layer. Packaged as software plus data (per-endpoint SaaS, DERMS, VPP orchestration), the same capability can be sold to smaller IOUs and co-ops. Named competitors already doing this variant: Itron ($3.5B market cap, meter + software), Landis+Gyr, Uplight, AutoGrid (acquired by Schneider), and Bidgely.

The wedge does not generalize into competitive retail or unregulated generation — Exelon spent 2022 explicitly divesting those, and the current mandate is regulated purity. Anything that requires the company to take merchant commodity risk is off the table under Butler.

Sources and further reading

• Exelon posts solid Q2 earnings, reaffirms 2026 guidance — Globe and Mail, July 2026.
• Exelon Q2 2026 slides: revenue beats, EPS misses expectations — Investing.com, July 2026.
• Exelon Raises Capital Plan to $41.7 Billion: Why the Transmission Pivot Changes the Math — TIKR, February 2026.
• Exelon lowers utility spending to ease electric affordability issues — Utility Dive, May 2026.
• PECO withdraws $510M in rate hike proposals over affordability concerns — Utility Dive, April 2026.
• Gov Shapiro Saves 1.7M PA Consumers $510M on Utility Bills — Pennsylvania Governor’s Office, April 2026.
• ComEd admits to bribery charge in Illinois, agrees to pay $200M fine — Utility Dive, July 2020.
• ComEd bribery trial verdict: Madigan associate, 3 others found guilty on all counts — Chicago Sun-Times, May 2023.
• Ex-Illinois House speaker sentenced to more than seven years on federal corruption charges — Courthouse News, 2025.
• Ex-ComEd CEO, Madigan ally to be freed from prison as appeals court calls for new trial — Chicago Sun-Times, April 2026.
• Exelon Completes Separation of Constellation — Exelon newsroom, February 2022.
• Pepco Holdings Inc. Completes $6.8 Billion Merger With Exelon Corporation — Sullivan & Cromwell, March 2016.
• Exelon-Constellation merger complete — Power Engineering, March 2012.
• PJM Board of Directors Approve NextEra Energy Transmission and Exelon’s Proposed 765-kV Transmission Line Project — T&D World, February 2026.
• Exelon ‘high probability’ data center load falls 40% — Utility Dive, August 2026.
• Maryland regulator only grants BGE half of rate increase — WYPR, December 2025.
• Samuel Insull biography — Wikipedia.
• Exelon Corporation (EXC) Stock Price & Overview — Stock Analysis, August 2026.