induction might be efficient in a 'relative' sense, but for solar, it would be a huge hog. with solar, it is more or less cost prohibitive to try and use photovoltaic power to heat things.
solar power works great for fans,
lights, motors, etc., but the amount of wattage needed to heat things is very large. your solar array would need to double or triple in size to be able to cook off of solar.
if you are planning to go solar in a year, I would strongly consider using propane for cooking and
hot water heating. more green options would be
wood, or better still but tricky, biogas. in my off-grid solar cabin, we used a
wood stove for all cooking, home heating, and
water heating. after a while, and after three babies, we added an on-demand propane hot water heater. compromise the name of the game.
it is good that you are thinking of these details now, and researching your true power needs ahead of time. make sure to factor in a huge cushion, as there are numerous ways that solar loses efficiency in storage and transport of power. consulting with a pro will get you a massive system that will meet your needs and exceed your budget. consulting with a fringe enthusiast will get you a small system that works great half of the time. talk to both but then find a balance that works for you. and dont underestimate how much power you will really use down the road. it all adds up in a hurry.
good luck