C182 pilot reported electrical problems and landed at alternate airport.

Attributes
ACN	1746621
Time
Date	202006
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	Skylane 182/RG Turbo Skylane/RG
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Airway Victor 611
Flight Plan	IFR
Component
Aircraft Component	Electrical Power
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Private Flight Crew Instrument
Experience	Flight Crew Last 90 Days 40 Flight Crew Total 179 Flight Crew Type 15
Person 2
Function	Pilot Not Flying Instructor
Qualification	Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Commercial
Experience	Flight Crew Last 90 Days 50 Flight Crew Total 340 Flight Crew Type 6
Events
Anomaly	ATC Issue All Types Aircraft Equipment Problem Critical
Miss Distance	Horizontal 0 Vertical 0

Narrative:

We were on an IFR flight plan at 8;000 [feet] about to fly over ZZZ when we were instructed to climb to 10;000 [feet] . When we were responding but they were unable to receive our coms. As we started to climb we kept trying to reach them. They had airlines trying to reach us and when we tried to squawk our transponder had shut down. We then started to lose navigation and alt. Inop light came on. We tried to trouble shoot the battery as well as turned off all our electrical load. While VMC we spotted ZZZ airport; and decide to circle and land. We believe our complete system malfunction was due to a alternator failure.

Original NASA ASRS Text

Title: C182 pilot reported electrical problems and landed at alternate airport.

Narrative: We were on an IFR flight plan at 8;000 [feet] about to fly over ZZZ when we were instructed to climb to 10;000 [feet] . When we were responding but they were unable to receive our coms. As we started to climb we kept trying to reach them. They had airlines trying to reach us and when we tried to squawk our transponder had shut down. We then started to lose navigation and alt. Inop light came on. We tried to trouble shoot the battery as well as turned off all our electrical load. While VMC We spotted ZZZ airport; and decide to circle and land. We believe our complete system malfunction was due to a alternator failure.

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.