Of course, the energy savings you can realize by installing Sunrise Windows with Ultra-U+Plus Glass will depend on the city where you live, the performance of your existing windows, and the construction style of your home. Savings of 45% can by realized in some situations, but a 25% – 35% savings is more common. The Savings figure calculated above is reached by multiplying the average monthly energy costs amount you chose by 12 to reach the first year’s total costs. Since it is estimated that energy costs will increase 5% per year, 5% of the first year’s costs is added to achieve the second year’s costs, then 5% of the second year’s costs is added to the second year to reach the third year’s costs, and so on to get the total energy costs for 10 years. Then 35% of that total is what appears as your Estimated Energy Savings over 10 years.