The phrase "available wattage" is correct and usable in written English.
It can be used when discussing the amount of electrical power that can be supplied or utilized by a device or system.
Example: "Before purchasing the new appliance, make sure to check the available wattage to ensure it meets your needs."
Alternatives: "power capacity" or "wattage capacity".
"If you want to run more things, you have to get more power," he said, adding that portable generators are also available in wattages lower than 5,000, which can provide power for lights and small appliances but not much more, and up to 12,000 watts, which can run a central air-conditioning system.
Gradually, new improvements provided brighter lamps that were both more durable mechanically and available in larger wattages.
"I was always there," he said, "up to the moment, and even beyond the moment, when it was decent to be there". The images he shot along his journey, taken in the only available light of low-wattage electric bulbs, are raw, garish, red smears of human destitution, the tawdry furnishings a physical extension of the debauched bodies.
Lamps range in size and wattage, and the available colours can range from warm white to cool white.
"If such products are not available, agencies shall purchase products with the lowest standby power wattage while in their standby power consuming mode".
As USA Today's Robert Bianco wrote of "The Kennedys," with Katie Holmes as Jackie and Greg Kinnear as Jack: "The sad truth is, if either had the charisma or star wattage needed to capture JFK and Jackie, neither would be available for a miniseries that started on History and ended up on Reelz".
Pure wattage probably doesn't tell the whole story though I can tell you that there's enough power available.
Star wattage continues to dim.
Power is indicated by wattage.
No star wattage is required.
