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2. SunSetter Awnings - Wikipedia

   en.wikipedia.org/wiki/SunSetter_Awnings

   SunSetter's primary product lines are awnings, but the company also manufactures retractable screens, solar shades, flagpoles, and mats. [citation needed] The company currently produces four different types of deck and patio awnings (including motorized and manual awnings); customers choose the color and size. [1]

3. Awning - Wikipedia

   en.wikipedia.org/wiki/Awning

   Spherical awning of a bandshell. Retractable awnings let owners control the weather on their own terms. When passing showers threaten, or when the sun gets hot, they or the home automation system unroll the awning for near-instant protection and shade. Lab test measurements show that it can be as much as 10 °C (20 °F) cooler under an awning's ...

4. Velarium - Wikipedia

   en.wikipedia.org/wiki/Velarium

   A velarium ("curtain") [3] was a type of awning used in Roman times. It stretched over the whole of the cavea, the seating area in amphitheaters, to protect spectators from the sun. [4][2] Retractable awnings were relatively common throughout the Roman Empire. Though the precise details are unclear, the awning was evidently usually supported by ...

5. Retractable roof - Wikipedia

   en.wikipedia.org/wiki/Retractable_roof

   Retractable roof. A retractable roof is a roof system designed to roll back the roof of a structure so that the interior of the facility is open to the outdoors. [1] Retractable roofs are sometimes referred to as operable roofs or retractable skylights. The term operable skylight, while quite similar, refers to a skylight that opens on a hinge ...

6. Levelized cost of electricity - Wikipedia

   en.wikipedia.org/wiki/Levelized_cost_of_electricity

   The levelized cost of electricity (LCOE) is a measure of the average net present cost of electricity generation for a generator over its lifetime. It is used for investment planning and to compare different methods of electricity generation on a consistent basis. The more general term levelized cost of energy may include the costs of either ...

7. Equivalent annual cost - Wikipedia

   en.wikipedia.org/wiki/Equivalent_annual_cost

   Equivalent annual cost. In finance, the equivalent annual cost (EAC) is the cost per year of owning and operating an asset over its entire lifespan. It is calculated by dividing the negative NPV of a project by the "present value of annuity factor": where r is the annual interest rate and. t is the number of years.