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PECO Energy Company

American energy company; subsidiary of Exelon

Layered newspapers, civic records and oral-history reels arranged as chronological evidence
History and societyInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 4, 2026
Entity authorityQ7118900 ↗
Source-derived summary

PECO, formerly the Philadelphia Electric Company, is an energy company founded in 1881 and incorporated in 1929. It became part of Exelon Corporation in 2000 when it merged with Commonwealth Edison's holding company Unicom Corp.

The company has approximately 2,300 employees; its call center and field craft personnel are members of IBEW Local 614. PECO serves about 1.6 million electric and over 511,000 natural gas customers; it is the largest combination utility in Pennsylvania, and has a franchise utility service area of 2,100 square miles (5,400 km2) with a population of 3.8 million people.

Electricity and natural gas

PECO operates in southeastern Pennsylvania and provides electricity to about 1.6 million customers and natural gas to over 511,000 customers. The company's electric service area covers all of the city of Philadelphia and Delaware County; most of Bucks, Chester, and Montgomery counties; and the southeastern corner of York County. The company's natural gas service area covers all of Delaware County; most of Bucks, Chester, and Montgomery counties; and a small portion of eastern Lancaster County.

PECO formerly provided electricity to 35,000 customers in portions of Cecil and Harford counties in Maryland through subsidiary Conowingo Power Company. On June 19, 1995, Delmarva Power acquired the Conowingo Power Company service area from PECO.

PECO's distribution line voltages are 2,400/4,160 volts wye and 7,620/13,200 volts wye. Subtransmission voltages are 34,500 volts and 69,000 volts.

Editorial summary

“PECO Energy Company” enters the record as american energy company; subsidiary of Exelon. Crown Archives preserves that source wording while asking what PECO, Energy and Company can confirm, complicate or overturn.

Editorial reviewMost valuable as an event-and-institution map that identifies actors, dates and record creators for deeper historical inquiry. The current lead gives the account dated anchors—1881, 1929, 2000, 1995—that can be checked directly. The linked authority record independently contributes the date 1881. Its strongest next move is a source search built around PECO, Energy and Company.
Editorial analysis

Why this record matters

“PECO Energy Company” is worth following because a concise public description often conceals a longer documentary argument. Here, PECO, Energy and Company provides the most credible route into that argument.

Evidence profile

Contemporary correspondence, administrative files and participant testimony can test how later narratives organized the event or institution. The source revision retrieved here is dated Aug 4, 2026. The linked authority identifier is Q7118900. VIAF identifies the subject as 147452219. The Library of Congress control number is no97045086. 3 of 5 selected statements include explicit references; 2 carry qualifiers and 1 use preferred rank. The first chronological checks are 1881, 1929, 2000 and 1995.

Critical limits

Later summaries often reconcile disputed chronology or motive more neatly than the contemporary record permits. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Compare institutional narratives with records created by participants and affected communities. Dates and formal titles are useful anchors, but not substitutes for context.

Best used for
  • Event chronology
  • Institutional context
  • Locating named record creators
Verify next

Contemporary correspondence, government or organizational records, oral histories and cited historical scholarship.

Three-step research path

  1. Establish the record: confirm the title “PECO Energy Company”, its source revision and the description used here.
  2. Expand the search: follow PECO Energy Company primary sources, PECO Energy Company archive and PECO research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “PECO Energy Company”?
  2. Which voices are present, absent or mediated by the institution?
  3. What chronology connects this entry to wider political or social change?
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Source & attribution

This entry incorporates text from “PECO Energy Company” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.