Marine electronics and offgrid solutions, for vessels headed far from shore.
From lithium battery retrofits to full off-grid power design — solar, wind, hydro, and the electronics to manage it all. Installed right, built to last, ready for the next passage.
Get in touchWhat we do
Power and electronics for offshore-capable vessels.
Drop-in and fully engineered LiFePO4 conversions — sizing, BMS integration, fusing, and wiring done to marine standards.
Inverter/charger upgrades (Victron and others) for clean, reliable AC power underway and at anchor.
Rigid and flexible arrays on arches, biminis, and decks — MPPT controllers sized and wired for real-world output.
Marine wind turbines mounted and wired for quiet, dependable charging on passage.
Tow-behind and transom-mounted hydro generators for serious amp-hours on long passages.
External smart regulation so your engine actually finishes the charge — faster, fuller, safer.
Marine generator installs and integration with new or existing power systems.
Corrosion diagnosis: find the leaks, protect your underwater metals, stop the damage.
The weird electrical gremlins nobody else wants to touch. Systematic diagnosis, honest answers.
Recent work
Real systems, installed right.
Who's behind it
Troy Rank started Passage Power for one reason: boats headed offshore deserve power systems as serious as their passages. Years of hands-on marine electrical work — from battery retrofits to full off-grid refits — go into every installation.
No upsells, no guesswork. Just solid engineering, tidy wiring, and systems you can trust a thousand miles from shore.
Get underway
Tell us about your boat and your power goals.