Generator sizes
Generator capacity is measured in kilowatts. This page explains what each range typically carries, so you can tell roughly where your job falls before we talk specifics.
Check availabilityTypically powers: Homes, small shops, restaurants, small offices, well and irrigation pumps
The most common range for whole-home standby power in Florida, including central air conditioning. Also covers small commercial spaces where the biggest load is refrigeration or a modest compressor. Usually single phase, sometimes available three phase.
Ask about this size →Typically powers: Convenience stores, small warehouses, medical and dental offices, larger homes, farm operations
A practical range once you have multiple air conditioning units, walk-in refrigeration, or a few motors that may start at the same time. Commonly three phase at 208 or 480 volts.
Ask about this size →Typically powers: Grocery and retail, restaurants with full kitchens, light manufacturing, small commercial buildings, construction sites
Enough capacity to carry rooftop HVAC plus refrigeration plus a production load. This is a very common size for commercial standby and for trailer-mounted rental-style units on jobsites.
Ask about this size →Typically powers: Manufacturing, cold storage, larger commercial buildings, agricultural operations, event and temporary power
Serious industrial capacity. At this size, transportation, site access, and how the unit will be set and connected all need planning before delivery.
Ask about this size →Typically powers: Industrial plants, large facilities, data and communications sites, multi-building operations
Typically containerized or skid-mounted, often with a paralleling or automatic transfer arrangement. Delivery requires heavy transport and a plan for offloading.
Ask about this size →Ranges are a starting point, not a specification. Two businesses of the same size can need generators an entire band apart, because the one with three compressors that may start together has a much higher peak than the one with resistive heat and lighting. See the generator sizing guide for how running load and starting load are worked out.
The other thing worth checking early is the rating basis. A unit sold as 100 kW may be 100 kW standby, which assumes emergency use and limited hours. If it will be your primary power source, the usable figure is its prime rating, which is lower. We check this on the specific unit rather than going by the advertised headline number.
GTG Power is an independent broker, so inventory is not a fixed catalog. Equipment moves. Rather than publishing a list that is wrong by the time you read it, we confirm what is genuinely available in your size range at the time you call, along with hours, condition, and real price delivered to your location.
In round terms, 100 kW is roughly 100,000 watts of real power. That is enough for a grocery store, a restaurant with a full kitchen, a small manufacturing operation, or a commercial building with rooftop HVAC plus refrigeration. The real answer depends on your starting loads, not just the running total.
Most Florida homes that want everything running, central air conditioning included, land somewhere in the 20 kW to 30 kW range. Larger homes with multiple air handlers, a pool, and a well may need more. Homes that only need essential circuits can go smaller.
Often, yes. Industrial diesel gensets are built for long service lives and many low-hour units come out of facilities that upgraded or closed. What matters is knowing the actual hours, the maintenance history, the load bank or run test results, and the true condition of the engine, alternator, and controls. We confirm the specification and condition of the specific unit before you commit.
Yes. Trailer-mounted units suit construction sites, events, farms, and any situation where the generator needs to move between locations. They are also convenient when a permanent pad and installation are not practical.
Yes. GTG Power arranges delivery to homes, warehouses, businesses, farms, and jobsites in all 67 Florida counties. Transportation cost depends on the size and weight of the unit, the distance, site access, and what is needed to unload it.
Generator sales and delivery in Florida