10W or 20W of solar power are usually sufficient for summer only experiment depending on a typical seismic station load.
IRIS PASSCAL's Polar Group uses both the Suntech STP010 (10W) and the STP020 (20W). They are both efficient, monocrystalline silicon solar panels and have strong frames. A mount was designed in house and manufactured specifically for these panels to attached them directly to our “summer only” enclosures.
