An industrial lamp which lights an area brightly enough to grow crops, but consumes a huge amount of power. Automatically turns itself off at night.
- 1 ˣ 1
- pass through only
- Cover Effectiveness
- Blocks Wind
- Terrain Affordance
- -2900 W
- Light Radius
- Heat Per Second
Sun lamps provide artificial light in the absence of sunlight, such as an indoor growing zone.
A sun lamp consumes 2900 W of power from 06:00 to 19:12, the period where plants can grow. While online, it provides 100% light within a 5-tile radius. This allows crops like rice plant to grow in a roofed room. As the natural sun doesn't always provide 100% light at day, a sun lamp causes plants to grow somewhat faster. They also provide at least 30% light in a 13-tile radius, which is enough to prevent penalties for being in darkness.
A sun lamp's main purpose is to create growing zones indoors, often called greenhouses. This allows plants to grow in the winter, when used with a heater. In extremely hot biomes, you might need coolers to grow during in the summer. Even in an "year-round" growing season, unpredictable events such as toxic fallout and volcanic winters can disrupt plant growth. Double-width walls provide more insulation against temperature changes, and potentially save on heater/cooler costs.
As they cannot be grown under roofs, trees such as pine, birch, saguaro or cocoa trees may not be grown in completely closed greenhouses. They may only be grown in greenhouses with roofs open in a grid pattern, and those leak a lot of temperature-controlled air.
If you have biofuel refineries available, you can use food produced by hydroponics to fuel chemfuel generators to help power the greenhouse array. This is so efficient that it violates thermodynamics, and leaves you with spare food for your colonists as well.
As sun lamps turn off at night, they consume an average of -1595 W⋅Days. Batteries can be used to average out power usage. However, batteries only take in energy at a 50% rate, meaning double the power is required at night, for an average required consumption of -1957.5 W⋅Day.
Otherwise, 2 solar generators are roughly enough to power a single sun lamp, not counting any hydroponics basins.
Sun lamps can be used in ordinary soil. But as the power cost of a sun lamp of very high, building a room of hydroponics basins helps with making the most of the limited growing area per lamp. Hydroponics will boost soil fertility to 280%, twice that of rich soil. However, each basin costs 100 W and only covers 4 tiles. Due to how the light radius forms, only 96% of a lamp's area can be used in hydroponics at a time.
- 0.17.1546 - Now turn themselves off when plants are resting.