Flight crew reported a rejected take off caused by electrical system failures.

Attributes
ACN	1753096
Time
Date	202007
Local Time Of Day	0601-1200
Place
Locale Reference	BWI.Airport
State Reference	MD
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	Electrical Power
Person 1
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Captain Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Maintenance Deviation - Procedural Published Material / Policy

Narrative:

Around 100 knots on takeoff roll received multiple caution msgs; and; my pfd and mfd went dark for a few seconds. Captain decided to reject takeoff. It turns out the right gen went out but also took a T.right with it. Bus ties were not working as they should. Ran ddg off the runway and taxied back to the gate. Mx had problems resetting the bus ties. Mx finally got everything everything straightened out and we left for ZZZ without further incident.

Original NASA ASRS Text

Title: Flight Crew reported a rejected take off caused by electrical system failures.

Narrative: Around 100 knots on takeoff roll received multiple caution msgs; and; my PFD and MFD went dark for a few seconds. Captain decided to reject takeoff. It turns out the right Gen went out but also took a T.R with it. Bus ties were not working as they should. Ran DDG off the runway and taxied back to the gate. Mx had problems resetting the bus ties. Mx finally got everything everything straightened out and we left for ZZZ without further incident.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.