Solar power, not sure what all is needed

You need one of these, but wait for the next sale (every few months in the flyer) usually at half price.

http://www.canadiantire.ca/en/pdp/motomaster-1000w-pure-sine-wave-inverter-w-remote-control-0111892p.html

Any two batteries 12s or 6s (IMO 6s better--See those Costco 6s for $115 each )

And one of these (again , they go on for half price every so often)

http://www.canadiantire.ca/en/pdp/motomaster-eliminator-intelligent-battery-charger-2a-0111506p.html

This charger sits at 13.4v forever, after doing its initial charge up. Great little float charger. That's for keeping the batteries up while at home if your trailer has no converter that does float charging or you don't leave it plugged in. Either way you need to take the batts home every time and put a charger on them to float.

You could use a solar set up--nothing less than 100w panel and not much more either, but getting one in Canada for a decent price is tough. Should be about $150 for a 100w panel. Do not buy a "kit"(way over the top prices) All you need is a small controller that can work with that panel. Should be under $25. eg

http://www.canadiantire.ca/en/pdp/coleman-8-5a-solar-charge-controller-0112008p.html

Maybe somebody local is selling solar panels out of his garage you can pick up no shipping. eg, here on the Island right now, this guy has popped up. (another guy was in business with good prices but has gone out of business for a while)

http://www.islandlifewholesale.com/100w-Mono-Crystaline-Solar-Panel-PWM-100.htm