What Floating Solar Racking Costs Per Watt

What does floating solar racking cost per watt?

Floating solar racking costs $0.234 to $0.506 per DC watt at FloatSolar's published structure-kit MSRP. The lowest figure is the Gen3 20 kW three-phase kit at $0.234 per watt; the highest is the Gen3 5 kW single-phase kit at $0.506 per watt. Every figure on this page is the structure kit alone and does not include modules, inverters, electrical balance of system, anchoring hardware, freight or labour.

Structure cost per watt falls by roughly 54% moving from a 5 kW array to a 20 kW array. The reason is amortisation: a floating array carries a fixed quantity of perimeter hardware, walkway sections, inverter mounts and grounding regardless of how many modules sit inside it, and the interior of a larger array is a repeating float-and-rail pattern that adds less non-recurring hardware per module. A buyer comparing a small pilot array against a full-size array should expect the per-watt hardware number to fall by about half, and should not treat a pilot's per-watt figure as representative of the production system.

Prices are structure-kit MSRP in US dollars. Dealer net pricing is released with an approved dealer application and is not published. FloatSolar maintains a minimum advertised price policy.

What is included in that price and what is not

The price buys the structure kit only: floats, rails, module mounting hardware, inverter mounts and grounding. That is the complete platform that carries the modules on the water, and nothing else is bundled into the number.

FloatSolar does not publish an installed system cost, and treats any single national figure for one as unreliable. Installed cost depends on the dealer, the site and the balance of system specified for the project, and the dealer who has surveyed the water body is the party that quotes it. Panels and inverters are deliberately excluded from the kit because their pricing moves faster than structural hardware pricing; see the recommended components page for the balance-of-system categories a complete system needs.

How much pond does a floating array need?

A FloatSolar Gen3 array occupies 58.6 to 63.5 square feet of water surface per kilowatt of DC capacity. The three-phase 640W configurations are the denser of the two at 58.6 square feet per kilowatt, and the single-phase 560W configurations require 63.5 square feet per kilowatt.

One acre of water is 43,560 square feet, so at those densities a fully covered acre would carry roughly 690 to 745 kW. Full coverage is not how floating arrays are actually designed. The realistic planning figure is roughly 410 to 520 kW per acre, which corresponds to 60 to 70 percent surface coverage. Setbacks from the bank, aerators and fountains, inlet and outfall structures, and a maintenance access lane around the array all remove usable surface, and a pond with an irregular shoreline loses more than a rectangular one.

Why imported floating racking is not automatically cheaper

An imported float package does not arrive with a structural price advantage that survives contact with the landed cost. Section 232 steel and aluminium tariffs held at 50% into 2026, and because that duty applies to imported metal generally, it raised imported and domestic metal racking pricing together rather than opening a gap between them. HDPE floats sit outside those tariffs, which is why the float component of the comparison behaves differently from the metal component.

The costs that decide the comparison are the ones that are not on the unit price line. Ocean freight and port scheduling add weeks and a variable charge. Customs clearance adds administrative cost and another scheduling dependency. Container-load minimum order quantities force a buyer to purchase more structure than the project needs, which converts a lower unit price into a larger cash outlay and inventory the buyer now owns. The most expensive line is usually the one nobody prices at bid time: a warranty replacement part that has to arrive by container measures its cost in months of an array being incomplete, not in the price of the part.

FloatSolar does not publish or estimate a competitor's price. The point of this section is that a unit price comparison between a domestic kit and an imported kit is not a total cost comparison, and a buyer should build the landed and lifecycle numbers before concluding either way. Domestic manufacturing and what it means for procurement is covered on the Made in USA page.

What moves the number

Five variables account for most of the movement between the low and high ends of the $0.234 to $0.506 per watt range.

• Array size. The largest single factor. Fixed hardware amortises across more modules as the array grows, which is the roughly 54% drop between the 5 kW and 20 kW kits.
• Single-phase versus three-phase. The three-phase configurations pair with 640W modules and reach $0.234 per watt at 20 kW, against $0.282 per watt for the single-phase 20 kW kit.
• Module wattage. A higher-wattage module puts more DC watts under the same quantity of structural hardware, which lowers the structure cost per watt without changing the structure price.
• Freight distance. Structure kits ship from domestic production, so freight is a truck movement priced by distance and class rather than an ocean container booking.
• Dealer volume band. Dealers buy at net pricing tied to annual volume bands of 2–4, 5–9, 10–24 and 25+ kits per year. Those net figures are released with an approved dealer application and are not published.