Marina electricity is billed three ways: included in the slip rate, flat per-night for transients, or metered on monthly and annual contracts.
Metered service runs $0.15 – $0.35 per kWh — well above residential rates because marinas pay commercial rates and pass through dock infrastructure costs. A liveaboard running AC year-round typically spends $100 – $300/month on power.
Transient flat-rate billing is $10 – $25/night for 30 amp and $20 – $40/night for 50 amp. Boats running heavy AC or refrigeration can exceed those flat rates in metered use, but for short stays the flat rate is usually generous.
Some marinas include modest power use in the slip rate (often capped at 500 – 1,000 kWh/month). Always read the contract — surprise power bills are a common new-owner complaint.
How to read these prices
Marina Electricity Fees is best treated as a budget, not a per-foot quote. The advertised rate is the floor; the real bill depends on LOA, the assigned slip, power usage, local tax, liveaboard status, and whether the marina counts your stay as transient, monthly, seasonal, or annual.
A reliable planning method is to price the same boat three ways: base rent, recurring utilities and fees, and one-time move-in costs. A 40-foot boat at $30/ft starts at $1,200, then $90–$180 power, $0–$250 liveaboard, $25–$75 pump-out and tax can push it to $1,350–$1,750 before insurance and maintenance.
Marina Electricity Fees — 2025 Price Ranges
| 30 amp metered | $0.15 – $0.30 / kWh |
| 50 amp metered | $0.18 – $0.35 / kWh |
| Transient 30 amp flat | $10 – $25 / night |
| Transient 50 amp flat | $20 – $40 / night |
| Three-phase 100/200 amp | Metered, $0.20 – $0.45 / kWh |
| Typical liveaboard monthly bill | $100 – $300 / month |
Cost by boat size
| 25 ft boatMinimum slip lengths often make small boats pay for 25–30 ft even when the hull is shorter. | $300 – $1,500/mo |
| 35 ft boatThe broadest inventory category; standard 30A or 50A power and conventional wet slips. | $420 – $2,100/mo |
| 45 ft boatMore beam and power requirements start narrowing the slip pool in older marinas. | $540 – $3,150/mo |
| 60 ft yachtDeep-water and end-tie inventory becomes important; some marinas add yacht premiums. | $900 – $4,800/mo |
| 80 ft yachtExpect 100A power, wider fairways, stronger docks, and more limited availability. | $2,800 – $9,600/mo |
Cost by marina type
| Basic municipal marinaBest value, fewer resort amenities, often longer waitlists. | $12 – $30/ft/mo |
| Full-service marinaFuel, pump-out, repair vendors, laundry, showers, and active dockmaster support. | $18 – $45/ft/mo |
| Resort marinaPools, restaurants, concierge, valet, hotel access, and vacation-style amenities. | $35 – $80/ft/mo |
| Yacht or mega-yacht marinaDeep-water slips, high-amp power, crew facilities, and premium security. | $50 – $200+/ft/mo |
Cost by region
| Inland lakesLowest average rates; covered slips and seasonal contracts are common. | $12 – $25/ft/mo |
| Gulf CoastStrong value, hurricane clauses, and good monthly availability outside winter. | $15 – $35/ft/mo |
| Florida East CoastHigh demand from year-round boaters, liveaboards, and yacht traffic. | $25 – $70+/ft/mo |
| Chesapeake / Mid-AtlanticBalanced pricing with seasonal contracts and strong sailboat infrastructure. | $18 – $40/ft/mo |
| Northeast / CaliforniaShort-season or scarce-waterfront markets command premium rates. | $25 – $80+/ft/mo |
Where the surprise charges live
The two line items that ambush boaters most often are electric and contract minimums. Metered electric is modest for weekend use and significant for an air-conditioned liveaboard. Flat power fees look predictable but punish light users. Always ask whether the marina passes through residential rates, commercial rates, or a marked-up marina rate.
Also confirm the length used for billing. Many contracts bill documented LOA plus bow pulpit, swim platform, davits, and dinghy brackets — anything projecting beyond the hull. A 39-foot boat can quietly price like a 43-foot boat. Ask explicitly about minimum slip length, beam premiums, catamaran multipliers, and end-tie surcharges.
Real-world pricing scenarios
Weekend cruiser. A 30-foot boat in an inland or Gulf Coast slip might run $450–$900/month base, $30–$90 power, and little else. The same boat in a premium urban coastal marina can cross $1,500/month once tax and parking are stacked on.
Seasonal snowbird. A 40-foot trawler staying five months in Florida usually lands $1,000–$2,400/month depending on coast and amenities. A monthly slip almost always beats nightly transient dockage over a winter, but the best harbors require reservations 3–9 months ahead.
Liveaboard or yacht owner. A 45–60-foot boat with heavy shore-power use can turn a fair-looking base rate into a much larger monthly bill once liveaboard fees, higher amperage, insurance minimums, and pump-out expectations are added.
Treat these as planning ranges, not quotes. Pricing moves with availability, storm season, local demand, and how much the marina wants your specific boat in a specific empty slip.