Throw punches at the bag but donât throw yourself at the bag. Stand on your own two feet and donât fall into the bag. Keeping your balance makes for better punching power and better footwork around the heavybag. Donât use the bag to hold you up.
At the time of this writing, the installed cost of solar panels was between $7-$9 per watt: A 5 kW system would cost around $25,000-$35,000. Many utility companies offer incentives, and some subsidize as much as 50% of system costs.
At an installed price of $1.25 per watt, the cost of PV solar is always cheaper than coal. At $2 per watt, it is cheaper after year 40. At $3.00 per watt, it is cheaper about year 80. It is expected that PV solar costs will reach conventional coal parity by 2017.