ELCO electric outboard fitted to a red Whaly boat beside the water
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Elco Motor Yachts · Electric Outboards

ELCO EP-Series

Official Elco Motor Yachts imagery

Electric outboards, engineered into complete propulsion systems by YESEN Technologies.

Explore the range
EP-20 / EP-30 / EP-50 48 V & 96 V battery systems Engineered around your vessel

Marine electric propulsion

More than a motor.
A complete system.

Electric outboards let boat owners, builders and operators move away from petrol propulsion without redesigning the hull around an inboard drive. YESEN Technologies works with ELCO electric outboards manufactured by Elco Motor Yachts in the USA, matching the motor to your vessel, sizing and integrating the battery, designing the electrical and control architecture, and supporting installation.

A motor is only one part of an electric boat. Performance, safety and reliability depend on how the motor, battery, protection and controls work together. YESEN assesses your vessel and its operational cycle first, then recommends a propulsion package — a system selected for your boat, rather than a motor chosen on horsepower alone.

The EP-Series

Three motors. The right fit for your boat.

EP-20EP-30EP-50
ELCO EP-20 electric outboard operating on a red boat
EP-20 · On-water installationElco Motor Yachts

ELCO Electric Outboard

EP-20

Nominal voltage
48 V
Electrical input
8.4 kW
Weight
38.6 kg

Elco positions the EP-20 as an electric alternative to a 20 hp petrol outboard. Its nominal 48 V battery system, brushless permanent-magnet AC motor and single-gear drive are offered with tiller or remote throttle, in short- or long-shaft versions.

Key features

  • Nominal 48 V, operating range 40–59 V
  • Brushless PMAC motor with single-gear drive
  • Tiller or remote throttle; short or long shaft
  • Optional electric trim and tilt, DASH Bluetooth interface and NMEA 2000 gateway

Suitable applications

  • Replacement of 17–24 hp petrol outboards, subject to assessment

85 lb (38.6 kg) · max 5,000 RPM

ELCO EP-30 electric outboard showing its complete motor, shaft and propeller
EP-30 · Motor, shaft & propellerElco Motor Yachts

ELCO Electric Outboard

EP-30

Nominal voltage
96 V
Electrical input
15.8 kW
Weight
40.8 kg

The EP-30 runs from a nominal 96 V battery system, with 15.8 kW continuous electrical input and Elco’s stated replacement range of 25–34 hp. At 90 lb / 40.8 kg, Elco describes it as slightly lighter than standard 20 hp petrol outboards. Battery selection, circuit protection and charger compatibility need careful engineering at this higher system voltage.

Key features

  • Nominal 96 V, operating range 90–115 V; 165 A maximum continuous current
  • Brushless PMAC motor with single-gear drive
  • 15.8 kW continuous electrical input
  • Tiller or remote throttle; short or long shaft; dual top-mount throttle for twin installations
  • Optional electric trim and tilt, DASH Bluetooth interface and NMEA 2000 gateway

Suitable applications

  • Lake and reservoir boats, and heavily loaded boats that need extra docking power
  • Replacement of 25–34 hp petrol outboards, subject to assessment

90 lb (40.8 kg) · max 5,750 RPM

ELCO EP-50 electric outboard powering a yellow Whaly boat
EP-50 · Electric propulsion in operationElco Motor Yachts

ELCO Electric Outboard

EP-50

Nominal voltage
96 V
Electrical input
38.4 kW
Weight
86.2 kg

The EP-50 uses a more robust chassis and a larger 9⅞ × 12 in propeller. Elco lists 38.4 kW continuous electrical input at a nominal 96 V, with a replacement range of 35–55 hp. At 190 lb / 86.2 kg, it is suitable for larger vessels. The high current calls for carefully engineered battery banks, cabling and protection: YESEN assesses the complete system, not the motor alone.

Key features

  • Nominal 96 V, operating range 80–120 V; 400 A maximum continuous current
  • Brushless PMAC motor with single-gear drive
  • 38.4 kW continuous electrical input
  • Tiller or remote throttle; short or long shaft; dual top-mount throttle for twin installations
  • Optional Panther Model 135 electric trim and tilt, DASH Bluetooth interface and NMEA 2000 gateway

Suitable applications

  • Replacement of 35–55 hp petrol outboards, subject to assessment

190 lb (86.2 kg) · max 6,000 RPM

Specifications

Compare the EP-Series

Elco’s comparable HP and replacement ranges are manufacturer designations, subject to vessel assessment. Electrical input is not shaft output power. Unconfirmed values remain TBC.

Technical comparison of ELCO EP-20, EP-30 and EP-50 electric outboards
SpecificationELCO EP-20ELCO EP-30ELCO EP-50
Elco comparable HP designation20 hp30 hp50 hp
Elco HP replacement range17–24 hp25–34 hp35–55 hp
Nominal battery voltage48 V96 V96 V
Operating voltage range40–59 V90–115 V80–120 V
Max continuous battery current175 A165 A400 A
Continuous electrical input8.4 kW15.8 kW38.4 kW
Shaft output powerTBCTBCTBC
Static thrust390 lbf (1.73 kN)585 lbf (2.60 kN)975 lbf (4.34 kN)
Maximum RPM5,0005,7506,000
Lower-unit gear ratio2.08:12.08:12.08:1
Propeller (as listed)9.25 × 8 in (235 × 203 mm)9.25 × 8 in (235 × 203 mm)9⅞ × 12 in (251 × 305 mm)
Motor technologyBrushless permanent-magnet AC (PMAC), single-gear driveBrushless permanent-magnet AC (PMAC), single-gear driveBrushless permanent-magnet AC (PMAC), single-gear drive
Weight85 lb (38.6 kg)90 lb (40.8 kg)190 lb (86.2 kg)
Overall L × W × H, short shaft470 × 279 × 1,092 mm (18.5 × 11 × 43 in)470 × 279 × 1,092 mm (18.5 × 11 × 43 in)704 × 376 × 1,153 mm (27.7 × 14.8 × 45.4 in)
CoolingWater-cooled; lower-unit inlet, pump and outlet per manual. Circuit type and flow requirement: TBCWater-cooled; lower-unit inlet, pump and outlet per manual. Circuit type and flow requirement: TBCWater-cooled; lower-unit inlet, pump and outlet per manual. Circuit type and flow requirement: TBC
ThrottleTiller: twist grip, forward/reverse switch, lanyard cut-off. Remote: Livorsi side, top or dual top mount; 16 ft cable, key and cut-off switchesTiller: twist grip, forward/reverse switch, lanyard cut-off. Remote: Livorsi side, top or dual top mount; 16 ft cable, key and cut-off switchesTiller: twist grip, forward/reverse switch, lanyard cut-off. Remote: Livorsi side, top or dual top mount; 16 ft cable, key and cut-off switches
Trim & tiltManual tilt lock; optional Panther Model 40Manual tilt lock; optional Panther Model 40Manual tilt lock; optional Panther Model 135

Product images: Elco Motor Yachts. Specifications as supplied; final system selection follows engineering assessment.

YESEN integration

Complete Marine Electric
Propulsion Solutions by YESEN

Choosing a motor is one step in an electric propulsion project. YESEN Technologies brings the motor, battery, controls and charging together as one engineered system.

01

Vessel assessment

We review hull form, displacement, operating profile and required speed to define what the propulsion system must deliver.

02

Motor selection & sizing

We compare motor options, including ELCO EP-series outboards and YESEN’s own solutions, against that requirement.

03

Marine battery & BESS selection

We size battery capacity, voltage and chemistry to the motor and the duty cycle.

04

BMS integration

We connect battery monitoring and protection to the propulsion system.

05

Electrical & control integration

We design cabling, fusing, disconnects, throttle and monitoring interfaces.

06

Charging engineering

We select chargers matched to battery chemistry and the charging infrastructure available at your berth or jetty.

07

Retrofit & installation engineering

We check transom, weight distribution, battery location and routing before work starts.

08

Testing & commissioning

We support sea or water trials and handover.

Electric propulsion FAQ

Your questions, answered.

The questions we are most often asked about moving a vessel to electric propulsion. You will find more in our full FAQ.

Often, but it depends on the hull, how you operate, and the space and weight available for batteries. A feasibility assessment answers this before you commit to anything.

Your vessel. Your duty cycle.
Your propulsion system.

Start with a conversation about your boat and its requirements.