Incident Summary
A single-engine aircraft experienced an alternator failure during flight in instrument meteorological conditions (IMC). The loss of electrical power followed, but the pilot had transitioned to visual meteorological conditions (VMC). The pilot chose to land on a private grass runway.
Sequence of Events
The pilot reported that the approach speed was too fast, resulting in a long landing. Braking was ineffective due to wet grass. The aircraft continued beyond the runway end, descended a slope, and struck two fences and a small building.
Findings
Examination revealed a broken terminal on an alternator lead. The broken terminal was identified as a potential factor in the alternator's inoperability during the flight.