Buy outdoor solar camping lamps. Leave them outside all day and bring them in at day. You may need some more illumination so when you do buy conventional lamps, it's best to use compact fluorescent light bulbs.
Studies proven that a V-6 automobile engine uses approximately 1.5 gallons of gas for every 90 minutes it operates. What this translates out to is if you were to run a 750 watt inverter, you should recharge a 120amp battery every 120 minutes by idling the car for 10 minutes. This means that you could get 36 hours of use from a 750 watt inverter on one gallon of gasoline. This equals a $3.00 fuel price every 24 hours if gasoline is coming in at $4 a gallon.
In extremely hot weather, you just add a little every-day baking soda to your water in your portable 150kw diesel generator 200kw diesel generator fuel solar power. In extremely cold weather, adding a little denatured alcohol (home or auto store) will prevent problems jointly fuel cell freezing.