Application for 100W panel

[NEOH]

What about adding an Enphase or Sunny Boy Micro-Inverter?

[ctwo]

My original plan was a portable system just like the well thought out system you show. The panel I picked seems impractical for that as it is just a little big and the reality is I'd not likely use it very much. I also thought (wishful thinking) it would be more trivial to supplement a home appliance.

The panel is something like an 18V 5A panel (an import newpowa) and I have a load of 24V fans that I was considering placing at the attic vents (~10) to wire in parallel direct to the panel (fused junction).

The heater would be as described, possibly with one of the fans too.

It seems like the system would mostly take care of itself (fail safe) due to its own limitations and only require some kind of switching from summer to winter.

I am very frugal and do not use AC in summer and the gas heater is set to 50. It was about 105F the other day and the attic get very hot, so some active air movement might help.

This is the best idea I could come up with. I could even supplement it with custom designed Arduino controlled monitoring and switching.

I may not actually save any money (except a wee bit of gas in winter), but it may improve the comfort some.

[SunEagle]

A 100W panel is probably over kill for an attic fan but you really need to check both the voltage and amp requirement of a DC motor before you hook up a pv panel to it.

I can say that the 100W panel will work real nice if you want to build a small portable solar / battery system. The battery can be around 50 to 60Ah and the charge controller can be a cheap 10Amp PWM type.

I built a small system but I also have a folding 80watt panel which makes it easy to transport, Still that 100w panel may work for you.

Here are a couple of pictures of my small system.

[ctwo]

I bought a 100W panel and my intended purpose is no longer viable. I am wondering what I can use a 100W panel for at home, without having to spend a bunch of money.

I thought of connecting it directly to a 24V fan in the attic (panel on roof) to vent the hot air during summer sunlight hours.

I thought of connecting it to nicrom (sp) wire heater rewound or custom built for the expected voltage/current to warm the house during winter sunlight hours.

That's all I could think of. Otherwise, the panel is just in the way and causing consternation.