Hold on, you have that backwards!
It is using an "Average" of 37W All The Time!
Meaning it is about the same as running a 37W light bulb Day And Night.
I'll not go into much fancy math... Or fancy circuits that could (with enough time to figure it out) considerably reduce it. Or explaining fancy controllers that can reduce the needed amount of panels.
The 890 watts should be 890 watt hours. 890 watt-hours / 24 hours = 37W 'average for 24 hours a day'.
An inverter big enough to start it is maybe using 20W. 20W x 24 hours = 480 watt hours, with nothing even plugged in.
The big pure sign inverter with a light load (150W) will be less than great in the efficiency department. Meaning when the fridge is running, it takes double what the fridge takes. So that 37W average just went to 74W average. (it will depend on the inverter)
So. 74W x 24 hours = 1776 watt hours per day.
The inverter will be loaded about 4 hours a day to run the fridge, so the 20W is for only 20 hours a day, 20W x 20 hours = 400 watt hours.
Together, 1776 + 400 = 2176 watt hours per day.
Guessing (because we don't know exactly where you are) the insolation is 3 hours per day. You have 3 hours to generate 2176 watt hours. 2176 / 3 = 725 watts of PV output.
Output watts is different than Rated watts, and the output will need increased by ~40% to find the approximate Rated watts.
So 725W is about 1030W of Rated solar panel watts.
Now throw in at least 10% for inefficiencies, losses, a minute bit of safety, etc.
That means I would start looking at about 1200W (rated) of solar panels to run ONLY that $99 fridge.
And the $99 fridge is Still going to need getting up around $1000 for the inverter system.
And it will need a Lot more battery bank to efficiently accept the output from 1200W of panels.
Guessing you'll have $7.50 a watt in the panels. Panels, S&H, brackets, wire, connectors, stainless steel bolts, etc.
Controller for that much power, maybe $1250.
Few $100 more for disconnects, boxes, etc.
Pure sine inverter, maybe $600, plus a couple hundred more for big giant wire, etc.
What? 15% PST, GST, and B.S. Tax?
My quick guess, DIY, about $13,000. JUST to run the fridge!
And we didn't even get to the batteries yet!
OR $1000 for a fancy fridge, ~100W of panel, and battery.
One way or the other, the $99 fridge has to go. It's not smart to leave it in the equation.
G-