I need to find a way to power a 1500watt space heater a 90w laptop a cell phone and USB powered fan for 10 hours off grid using solar. Help!?

Greg is correct. I designed solar power systems for use in remote areas - they would push weather data to satellites.

That space heater is the problem. You could very easily haul a 6-12 pound battery and tiny 400 watt inverter to power a laptop, small fan and charge a cell phone for 10-20 hours. No need to bring a solar panel or small 20amp solar controller. And it would cost very little.

That 1500 watt heater? No. You don't get to do that. Here you would bring a heat head that screws onto a blue propane torch bottle. They come with two heads for more heat but use the bottles faster. You could also buy a 'Heat Buddy' that uses the common bottle gas for camping.

That 1500 watt heater is not going to happen because nice solar panels the size of a sheet of plywood only do 400 watts and cost allot of money. You would need to haul 4 and they are delicate. It will take you 2 days to build the proper stand and to make them work for 10hrs someone would have to babysit and move them every 15 minutes.

That 1500 watt heater is not going to happen because that is a 125 amp current draw from a 12 volt battery BANK.. You would need about 12 of the 80-120lb deep cycle batteries to pull 150,000 amp hours over 10 hours.

Realistically. You can visit Wal*Mart and buy a 2200mah and higher portable charger. That will recharge most cell phone fully two or more times and they are not expensive. You could by a second one for the USB fan. Then just bring a Heat Buddy or a bottle heater head and you are covered. The cost will very little, it wont take up much space at all, and it should be easy for most anyone to add to their backpack.

Power Station - https://amzn.to/2VFsfXz

Basically not possible.

Space heater NO WAY.

Gas heaters good for sort term use but cost a fortune if used long term.

lap top if your off the grid once again Why do you want or be able to use a 90 watt expensive lump of junk?

If you can not live with out a lap top STAY AT HOME or buy a motor home which would give you security and some where to live that's warm or cool as needed.

It is documented that solar cells cause Cancer. Use at your own risk.

I would highly recommend that you look up three dimensional solar cell it's a new discovery if you position a solar cells in a three-dimensional pattern you can get a hundred percent more power then using the conventional flat configuration. What I'm showing you in the pictures isn't available commercially yet but you can build something just like this your own self it's highly efficient.

You need a solar system that includes a battery or batteries. It needs a charge controller/inverter that handles the max input from the panel and provides the max output for everything running at the same time. The battery needs to be deep cycle and have a capacity to power your devices through a night. The panel has to provide enough output to handle the day and night operation. I used to design such systems.