Filo, like its two sister gas giants in the Centares system, serves as a vital hub of economic activity. The planet’s stormy atmosphere is littered with massive floating city platforms, each covered with factories, wind farms, recycling facilities, giant, domed farms, and other infrastructure. These floating cities, each sporting hundreds of repulsorlift generators and station-keeping thrusters support the planet’s massive population of factory workers, technicians, supervisors, production specialists, and others that drive the planet's economic engine. So as not to introduce unhealthy competition between planets, the system government introduced a series of laws regulating the type of industry that can be established on the three gas giant planets. In Filo’s case, the main industries are vehicle manufacturing, industrial equipment, and building components.
The closest planet to the system’s sun, Filo is frequently buffeted by solar winds and particle discharges from its star. Fortunately, the thick gaseous atmosphere serves to attenuate and dissipate most of the solar radiation. Filo’s cloud cities boast additional ray shielding to protect the inhabitants from the frequent bombardments of gamma- and x-rays from these solar phenomena. The planet itself has a solar day of twenty-seven hours, which is quite comfortable for most sentient species, although the solar year on Filo is quite short, at one hundred seventy-seven days. Being the closest planet to the Centares sun, average temperatures near the band of cloud cities are very high, averaging two hundred twenty standard degrees. The changing temperatures between day and night generate strong winds, which the population uses to generate most of the planet’s power requirements. Extensive wind farms are found on every city platform, projecting above, below, and to the side of the protective bubbles. The maintenance of these, as well as the production of spare parts, is a significant industry on the planet, employing as much as five percent of the working population.
Handling food production and distribution to feed the planet’s numerous inhabitants is a full-time activity that also occupies a large section of the working population, as it typically does on most inhabited gas giants. On Filo, food production is mainly concentrated in large agricultural domes on dedicated floating platforms, where a variety of fungi and hardy grains are grown with the aid of artificial lighting. Meat is largely imported from Centares, where massive herds of nerfs support the population of the entire system. Advanced waste recycling and purification systems provide an ample supply of fertilizer and artificial soil. Water supply is a major concern, and this is managed using a system of reservoirs aboard each city and a highly advanced water reclamation system that captures and recycles up to ninety percent of all water used in each city. Oxygen is also imported and combined with locally produced hydrogen in large production centers to produce drinkable water, which is stored in the reservoirs. Despite all this activity, only fifty percent of the population’s dietary needs can be produced locally, with the remainder needing to be imported.