Defense Advanced Research Projects Agency

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3parts potassium nitrate 1parts powdered sugar best rocket fuel mix

http://www.dphss.guam.gov/content/contact-us

https://youtu.be/12fR9neVnS8

Boil 2 cups of water, and then adding 2 pounds of potassium nitrate until the mixture is dissolved. Continue to boil the water until it has all evaporated and you are left with just a white powder in the bottom of the pot. It may be clumped up at this point, so use a hammer or hard surface to break up the clumps

http://www.ehow.com/how_4929615_rocket-fuel-out-of-sugar.html

more mix 150g of KNO3 with 80g sugar 80g of water and a teaspoon of honey. Mix with a wood spoon to avoid sparks

$600 kit" consists of:

One Uni-Solar 32-watt amorphous-silicon PV module, 12 volts: $180.00

One Morningstar 6-amp charge controller, 12 volts: $40.00

Two Deka 92 amp-hour sealed batteries, 12 volts: ($130.00 each) $260.00

One Aims 800-watt modified sine wave inverter, 12 volts: $65.00

TOTAL: $545.00

This leaves you with $55 for wire, battery cables, mounting hardware, fuses between components, and the miscellaneous odds and ends that are always needed for any project of moderate complexity