Solars

**Solar Arrays** are the main backup power source on the station. They are very useful if there are no Engineers to start the Engine or if it is nonfunctional for some reason. As name suggests, solar arrays generate electrical power from the local sun. While they won't generate as much as other power sources, they are reliable and don't require maintenance, if properly set up.

## Locations

There are five solar arrays on the station:

1. Fore - Located in northern section of EVA Maintenance.
2. Fore Port - Located in Arrivals Maintenance, right next to the Primary Tool Storage.
3. Fore Starboard - Located in Bar Maintenance, above the Garden.
4. Aft Port - Located in Engine Maintenance, south of Drone Fabrication and Waste Handling. In case of Engine failure this solar is usually damaged.
5. Aft Starboard - Located in Science Maintenance, east of Xenoflora Research.

## Setting up

Setting up the solar arrays is very simple, as they already start pre-wired. The machinery still has to be properly configured, though, in order to generate power.

### Calibration

As station is orbiting local sun, solar arrays have to be calibrated properly. Usually, the easiest way is simply opening the solar array control console, and pressing the "Auto" button. If the wiring isn't damaged, solars should automatically calibrate themselves. Also, please note that station blocks sunlight. This means output of solar array is fluctuating between 0 and 90 000 Watts. To compensate, the SMES power storage units are used.

### SMES Setup

 SMES units store power generated by solar array and send it to the main grid. As solar arrays are often used as backup power source it is recommended to leave the SMES output offline, until they are needed. Optimal SMES settings are:

* 90 kW Input, charging mode Auto.
* 50 kW Output, charging mode Offline.

This will ensure the SMESs get charged and are ready as backup power source, which will be ready should Engine failure occur. If this happens, simply turn the SMES outputs to Online. This can be achieved either manually or using the Remote Control Consoles. The station AI may do this remotely as well, if your station is equipped with one. With all five solar arrays online station should have at least 250 000 Watts of power, which is enough to operate life support, AI and other important systems, as long as power saving measures are utilized (turning off unnecessary lights, and limiting usage of high powered machinery).

Important note: Setting the SMES below 90 000W input is not recommended, it will result in wasted power. If the input wire doesn't have enough energy available, the SMES will input at least as much as possible. The same applies for outputs, with an extra note that outputs of all SMESes on a single power grid will try to balance themselves. See the page SMES for more information on how this works.

## Solar Maintenance

Space is full of dangers. While solar arrays provide reliable power source, they may be easily damaged during a Meteor Shower or other dangers. This section will explain how to repair the array.

### Wiring Damage

This problem may be easily fixed by replacing damaged/missing wiring.

### Solar Panel(s) Damage

Each solar panel is covered by double glass sheet. If this sheet was damaged it has to be replaced. Crowbar the broken glass out and replace it. If the panel was completely destroyed obtain replacement solar panel assembly. Few assemblies should be in Engineering Storage, alternatively contact Cargo department to order more. Wrench the assembly in place and add protective glass sheets.

### Solar Tracker Damage

Solar tracker is special piece of machinery which ensures the solar array is properly aligned. If it's destroyed it has to be replaced. Obtain new solar panel assembly, wrench it in place and then insert solar tracker circuit board. Then add two glass sheets and your new tracker is finished.

*Please note that it is not recommended to have more than one tracker for each solar array.*

### SMES Damage

SMES units are very expensive to replace. For more information on this complex piece of machinery refer to SMES Manual.

Please note that solar arrays should **NEVER** be wired into the main grid. If there are two or more arrays in same grid, controllers conflict which usually results in both arrays ceasing to function. If you want the array to output all available power to the grid directly, set SMES output to maximum.