Solar Panels / SP90-L
SP90-L 90 W Solar Panel
Powers Remote Systems
Useful at sites far
from ac sources
weather applications water applications energy applications gas flux & turbulence applications infrastructure applications soil applications


Improvements in the SP85 made it a 90 W panel, so it has been renamed the SP90.

The SP90-L is a 90 W solar panel used in systems with large power requirements. It recharges 12 V batteries. Its cable length is user-specified, and the SP90 allows unattended operation of systems in remote locations, far from ac electrical sources.

In the image, the SP90-L is shown with a 31107 Extended Mounting Kit.

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Benefits and Features

  • Supplies electrical power in locations where ac power is unreliable, expensive, or not available


SP90-L with the 31107 Extended Mounting Kit
SP90-L with the 31107 Extended Mounting Kit
SP90-L with the 31107 Extended Mounting Kit

Detailed Description

The SP90 includes the 31107 Extended Mounting Kit for attaching the solar panel to a Campbell Scientific tripod or tower. The 31107 positions the solar panel approximately 25 cm (10 in.) from the tripod or tower, which reduces shadows from other components and guy wires. The zenith angle indicator and the slotted supports simplify installation. The 31107 began shipping with the solar panel in October 2014. This kit may be purchased separately to retrofit existing solar panels.

One SP90 can be connected to the SOLAR charge input of the CH200 or 18529 SunSaver regulator to provide a peak charge of 90 W. Two SP90 solar panels can be wired in parallel to the charge inputs of the SunSaver 18529 regulator to provide a peak charge of 180 W.


-NOTE- Solar panel characteristics assume 1 kW m-2 illumination and 25°C solar panel temperature. Individual panels may vary up to 10%. The output panel voltage increases as the panel temperature decreases.
Cable Description 16 AWG, 1-twisted pair
Peak Power 90 W (180 W peak power when two SP90s are connected to one 18529 regulator)
Current at Peak 5.0 A
Voltage at Peak 17.9 V
Short Circuit Current (Isc) 5.21 A
Open Circuit Voltage (Voc) 22.1 V
Module Efficiency 13.1% / 13.9%
Maximum Tolerance +10% / -5%
Nominal Voltage 12 V
Efficiency Reduction < 5% reduction (efficiency 13.2%) at 200W/m2
Limiting Reverse Current 5.58 A
Temperature Coefficient of Isc 0.105%/°C
Temperature Coefficient of Voc -0.360%/°C
Maximum Allowable Wind Gust Speed
  • Note: The wind ratings are for solar panels with the indicated mounts and do not account for strength of tower or tripod.
  • 50 m s-1 (112 mph) Extended mount
Dimensions 120.9 x 53.7 x 5.0 cm (47.6 x 21.1 x 2.0 in.)
Weight 7.7 kg (17.0 lb)



The SP90-L is compatible with the CH200 or 18529 Morning Star SunSaver.


The SP90-L is compatible with EnerSys Genesis NP series (such as PS200, BP12, BP24), EnerSys Cyclone series, Concorde Sun Xtender series (such as BP84), or flooded batteries when used with the 18529 Morning Star SunSaver.


  • The 18529 MorningStar SunSaver draws a continuous 8 mA current drain.

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