Substation Scout

Morrisville

Named in 6 PJM planning documents for 5 projects, from October 8, 2024 to May 8, 2026.

Existingdescribed as
DOMzone
500 kV, 500kVkV as printed
8mentions

PJM interconnection queue

A PJM queue substation page has the same name: Morrisville (VA) — 12 queue requests filed, 1 active.

Same name and transmission owner. Matched on name and transmission owner: the utility that presented this substation in PJM planning materials is the transmission owner recorded on the queue filings at a substation of the same name. Not verified as the same facility.

Projects naming this substation

Figures are from the most recent document naming each project, as printed. Each links to its page.

ProjectStatus as printedCost estimateIn-service dateCustomer loadAs of
Loudoun – Morrisville 500kV
B3211
Cancelled $4.5 M 12/31/2024 Not printed 2025-04-01
TEAC
Dominion Transmission Zone: Baseline New 765/500/230kV Yeat Substation
B4000.355 – B4000.359
Not printed $1,109.89M 6/1/2029 Not printed 2026-05-08
TEAC
Do No Harm (DNH) Analysis
DOM-2020-0026-DNH · s2340.1 & s2340.2
Conceptual $1.5M 12/31/2026 Not printed 2024-10-08
TEAC
Do No Harm (DNH) Analysis
DOM-2022-0046-DNH & DOM-2022-0047-DNH
Conceptual $114.0M 12/31/2027 Not printed 2024-10-08
TEAC
Line #2114 Reactor
DOM-2024-0027
Engineering $4M 6/01/2025 Not printed 2024-12-03
TEAC

Changes between documents

Where two documents print different values for the same project. A large change in a cost estimate can reflect a need being combined with others into one solution, not only a re-estimate; read both pages.

What changedPrinted valuesEarlierLater
Cost estimate
prior value printed on the same page
$1,055.3 M → $1,109.89M 2025-01-07 2025-01-07
Cost estimate
prior value printed on the same page
$1,109.89M → $978.76 M 2026-08-04 2026-08-04
Cost estimate $1,109.89M → $978.76 M 2026-05-08 2026-08-04
Substations named BRISTERS; ELK RUN; JOSHUA FALLS; MEADOWBROOK; VINT HILL; YEAT → BRISTERS; CULPEPER YEAT; CUNNINGHAM; ELK RUN; ELMONT; JOSHUA FALLS; KRAKEN; MEADOWBROOK; MIDLOTHIAN; MORRISVILLE; MOSBY; NOKESVILLE; NORTH ANNA; POSSUM PT; SPOTSYLVANIA; VINT HILL; VONTAY; WISHING STAR; YEAT 2025-01-07 2026-04-07
Substations named BRISTERS; CULPEPER YEAT; CUNNINGHAM; ELK RUN; ELMONT; JOSHUA FALLS; KRAKEN; MEADOWBROOK; MIDLOTHIAN; MORRISVILLE; MOSBY; NOKESVILLE; NORTH ANNA; POSSUM PT; SPOTSYLVANIA; VINT HILL; VONTAY; WISHING STAR; YEAT → ANDERSON BRANCH; BRISTERS; CULPEPER YEAT; ELK RUN; ELMONT; JOSHUA FALLS; KRAKEN; MEADOWBROOK; MORRISVILLE; MOSBY; NOKESVILLE; POSSUM PT; SPOTSYLVANIA; VINT HILL; VONTAY; WISHING STAR; YEAT 2026-04-07 2026-05-08
Substations named ANDERSON BRANCH; BRISTERS; CULPEPER YEAT; ELK RUN; ELMONT; JOSHUA FALLS; KRAKEN; MEADOWBROOK; MORRISVILLE; MOSBY; NOKESVILLE; POSSUM PT; SPOTSYLVANIA; VINT HILL; VONTAY; WISHING STAR; YEAT → BRISTERS; CLOVERDALE; ELK RUN; JOSHUA FALLS; MEADOWBROOK; VINT HILL; YEAT 2026-05-08 2026-08-04
Cost estimate
prior value printed on the same page
$35.0M → $1.5M 2024-10-08 2024-10-08
Substations named ELK RUN; GAINESVILLE; LOUDOUN; MORRISVILLE; REMINGTON CT; ROLLINS FORD → ELK RUN; GAINESVILLE; REMINGTON CT; ROLLINS FORD 2024-10-08 Not reported
Cost estimate $37.5M → $23.0M 2026-10-06 Not reported
Cost estimate
prior value printed on the same page
$115.0M → $114.0M 2024-10-08 2024-10-08
Cost estimate $114.0M → $37.5M 2024-10-08 2026-10-06
Cost estimate
prior value printed on the same page
$23 → $37.5M 2026-10-06 2026-10-06
Substations named ANDERSON BRANCH; BRISTERS; NOKESVILLE → BRISTERS; LIBERTY; LOUDOUN; MEADOWBROOK; MORRISVILLE; NOKESVILLE; REMINGTON CT; ROLLINS FORD; VINT HILL; WHEELER; WISHING STAR 2026-10-06 Not reported
Substations named BRISTERS; LIBERTY; LOUDOUN; MEADOWBROOK; MORRISVILLE; NOKESVILLE; REMINGTON CT; ROLLINS FORD; VINT HILL; WHEELER; WISHING STAR → ANDERSON BRANCH; BRISTERS; NOKESVILLE 2024-10-08 2026-10-06
Substations named ELK RUN; LOUDOUN; MORRISVILLE; REMINGTON CT; ROLLINS FORD → ELK RUN; REMINGTON CT; ROLLINS FORD 2024-12-03 Not reported

Every mention

DateDocumentProjectWhat the document says about it
2026-09-08* SRRTEP Southern
Dominion p. 84
Do No Harm (DNH) Analysis No role wording
500 kV
2026-05-08 TEAC
Item 10 - Reliability Analysis Update p. 19
Dominion Transmission Zone: Baseline New 765/500/230kV Yeat Substation “Upgrade and install equipment at Morrisville substation”
500kV
2026-04-07 TEAC
Item 11 - Reliability Analysis Update p. 15
Dominion Transmission Zone: Baseline New 765/500/230kV Yeat Substation “Upgrade and install equipment at Morrisville substation to support the new 500kV conductor termination.”
500kV
2025-04-01 TEAC
Item 14 - Reliability Analysis Update p. 10
Loudoun – Morrisville 500kV No role wording
500 kV
2024-12-03 TEAC
Item 10 - Dominion Supplemental Projects p. 6
Line #2114 Reactor No role wording
2024-10-08 TEAC
Informational Only - DOM Local Plan submission of supplemental projects 2024 p. 183
Line #2114 Reactor No role wording
2024-10-08 TEAC
Informational Only - DOM Local Plan submission of supplemental projects 2024 p. 3
Do No Harm (DNH) Analysis No role wording
2024-10-08 TEAC
Informational Only - DOM Local Plan submission of supplemental projects 2024 p. 84
Do No Harm (DNH) Analysis No role wording
500 kV

* A local-plan posting carries no meeting date; the date shown is when pjm.com last modified the file.

Before relying on any of this