My kitchen fridge is relatively new, uses ~1.25 kWh/day, typically draws ~100W when running and never really goes over 200W

My garage fridge is older and cheaper and uses about the same amount of energy, but power occasionally spikes >1kW

With batteries, both could be powered with just ~200 W worth of panels. Without batteries, you may want a little more power or a descent capacitor to make sure you can handle the start-up loads.

Given it's out in direct sunlight all day, you may need an extra 200W or so to offset the solar hear gain.

A typical rooftop panel is ~300-400W, so 1 would probably do it.