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PowerStream

Open-knowledge reference entry

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJun 16, 2026
Entity authorityQ7236420
Source-derived summary

PowerStream Holdings Incorporated was an electric utility servicing communities north of Toronto and in Central Ontario. Its service areas included Aurora, Alliston, Barrie, Beeton, Bradford West Gwillimbury, Penetanguishene, Markham, Richmond Hill, Thornton, Tottenham and Vaughan.

Powerstream merged with Enersource and Horizon Utilities to form Alectra on February 1, 2017. Through a partnership with the Town of Collingwood it owned a 50% share of Collus PowerStream which serves customers in Collingwood, Stayner, Creemore and Thornbury. The 50% ownership stake in Collus PowerStream was transferred to Alectra before being sold back to the Town of Collingwood in 2017.

History

PowerStream was formed as a result of a merger of Markham Hydro, Hydro Vaughan, and Richmond Hill Hydro that took place in 2004. The separate utilities had been created by the York Municipal Hydro-Electric Service Act in 1978. Following the initial merger, PowerStream also gained distribution territory after the purchase of Aurora Hydro in 2005, and Barrie Hydro in 2009.

On August 2, 2012 the company purchased 50 per cent ownership of Collus Power from the Town of Collingwood. As a result of the deal Collus rebranded to Collus PowerStream.

Editorial summary

Begin with the source’s own compact description: “PowerStream” is open-knowledge reference entry. The dossier treats that line as a proposition to test through PowerStream, Open-knowledge and entry, not as a finished interpretation.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—2017, 2004, 1978, 2005—that can be checked directly. The linked authority record independently contributes the date 2004. For this dossier, PowerStream, Open-knowledge and entry is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “open-knowledge reference entry” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jun 16, 2026. The linked authority identifier is Q7236420. 2 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2017, 2004, 1978 and 2005.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “PowerStream”, its source revision and the description used here.
  2. Expand the search: follow PowerStream primary sources, PowerStream archive and PowerStream 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 “PowerStream”?
  2. Which institution is responsible for the underlying evidence?
  3. Which cited source is closest to the event, object or claim?
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Source & attribution

This entry incorporates text from PowerStream” 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.