Depends several factors though. My buddy, 59 deg N, has solar panels on his roof. During winter the sun is so low in the sky that a treeline quite away shadows

Depends several factors though. My buddy, 59 deg N, has solar panels on his roof. During winter the sun is so low in the sky that a treeline quite away shadows most of the panels. He doesn't run microinverters so often zero output for an entire day. During summer through he's often self-reliant, including charging his EV. If he had a power-wall type battery he'd be fully self-reliant most of the summer.