Image of the golden solar panels on the space station

Why are ISS solar panels gold?

The main reason that the ISS solar panels are gold is because they are more efficient than blue or black solar panels. Gold is more malleable and ductile than a semiconductor, and it has great efficiency in terms of conductivity of electricity, which is highly imperative for solar energy conversion into electricity.

How long do solar panels last on the Space Station?

The current solar arrays work well but are reaching the end of their 15-year lifespan. The first pair of the Space Station’s original solar arrays have been in use since 2000 and have been powering the station for more than 20 years.

Why is gold preferred over blue and black solar panels?

Now gold is preferred over blue and black panels for two primary reasons. The first reason is that gold is more malleable and ductile as compared to a semiconductor and the second one is that it has great efficiency in terms of conductivity of electricity which is highly imperative for solar energy conversion into electricity.

What are ISS roll-out solar arrays?

During these spacewalks, Thomas and Shane will install the first two of six new solar arrays that will unfurl in space. The panels, dubbed ISS Roll-Out Solar Arrays (iROSAs) arrived at the Station on the SpaceX CRS-22 supply mission, and were moved into position by robotic arm on 10 June.