The higher the solar fraction, the greater the solar contribution to water heating, which reduces the energy required by the backup water heater. The solar fraction varies from 0 to 1.0. Typical solar factors are 0.5â0.75. Don't choose a solar water heating system based solely on its energy efficiency.
Price of a Stamp. The current price of a first class stamp is 49 cents. A domestic first class letter (1 oz.) is 49 cents. The price of each additional ounce is 21 cents. It will cost you 34 cents to send a domestic postcard.
the cost of a first class postage stamp is now 49 cents 3 cents more than before regulators approved the price hike in december and it went into effect sunday many people won t feel the increase right away forever stamps are good for first class postage at whatever the future rate