Photovoltaic system and is typically less useful than a calculation of return on investment. While it is typically calculated to be between 10 and 20 years, the financial payback period can be far shorter with incentives. Due to the low voltage of an individual solar cell (typically ca. 0.5V), several cells are wired "(also see copper used in PV systems)" in series in the manufacture of a "laminate". The laminate is assembled into a protective weatherproof enclosure, thus making a photovoltaic module or solar panel. Modules may then be strung together into a photovoltaic array. In 2012, solar panels available for consumers
Poisk (ISS module) Poisk (ISS module) Poisk (; lit. "Search"), also known as the Mini-Research Module 2 (MRM 2), , or "МИМ 2", is a docking module of the International Space Station. Its original name was Docking Module 2 ( (SO-2)), as it is almost identical to the Pirs Docking Compartment. Added in 2009, "Poisk" was the first major Russian addition to the International Space Station since 2001. Poisk is overall the same design as a docking module Pirs. Whereas Pirs has been attached to the "nadir" ("bottom") port of "Zvezda" module, Poisk is attached to the "zenith" ("top"); Pirs is closer to