Smart Plug
SmartPlug Systems, LLC designs and manufactures push-in shore power connectors, inlets, cordsets, ELCI safety devices, and pedestal retro-fit kits for marine, RV, specialty-vehicle, and dockside applications, sold worldwide through authorized distributors and retailers.
- Company typePrivate
- Founded2007
- HeadquartersSeattle, United States
- Headcount11–50
- GTM typeB2C
- OfferingHardware or Manufacturing
What Smart Plug does
SmartPlug Systems, LLC is a Seattle-based, privately held manufacturer of shore power connection hardware founded in 2007 to replace the twist-type shore power connector design that has remained largely unchanged since 1938. The company's flagship technology is a push-in connector with a multi-point locking system, asymmetrical body shape, and three weatherproof seals that delivers 20–27 times more metal-to-metal contact than legacy twist-type designs, addressing the overheating and corrosion failures that are a leading cause of marine electrical fires. Products are built around marine-grade 316 stainless steel, nickel-plated brass pins, and UV/heat-resistant Valox 553U resins, and are certified by Intertek (ETL) and have passed the IMANNA 30-day salt fog test — SmartPlug was the first retrofit shore power plug to do so.
The catalog spans connectors, inlets, combo kits, cordsets (including the June 2025 Angled RV Cordset), ELCI breakers and sensors, EATON Lighthouse pedestal retro-fit kits, dock and lift kits, adapters/pigtails, data ports, and service parts, covering 15A through 50A ratings for marine, RV, specialty-vehicle, and dockside applications. SmartPlug does not sell direct via its website; all revenue flows through a worldwide network of authorized Marine and RV distributors and retailers, with international warranty coverage handled through local distributors. Go-to-market combines product-led demos at major boat shows (Seattle Boat Show, Miami International Boat Show), a multi-channel content and social program (SmartBlog, Facebook, Instagram, YouTube, LinkedIn, X), and integration partnerships with North Shore Safety (LineGard ELCI sensors), Sensata Technologies (Airpax circuit breakers), and EATON.
The company is led by CEO John C. Greenwood, appointed by the Board in November 2024 to accelerate growth in current and expanded market segments. Founder Ken Smith, the visionary behind the product line, passed away on March 16, 2026. The company is privately held with no disclosed external institutional investors, no disclosed funding rounds, no disclosed revenue, and no app, API, or AI/ML capability.
Smart Plug firmographics
Firmographics- Name
- Smart Plug
- Legal name
- SmartPlug Systems, LLC
- Website
- https://smartplug.com
- Company type
- Private
- Founded year
- 2007
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- SmartPlug Systems, LLC designs and manufactures push-in shore power connectors, inlets, cordsets, ELCI safety devices, and pedestal retro-fit kits for marine, RV, specialty-vehicle, and dockside applications, sold worldwide through authorized distributors and retailers.
- Ownership category
- akta.pro rank
Smart Plug industry classification
Industry- Product category
- Marine Electrical Equipment
- NAICS
- Electronic Connector Manufacturing (334417), Current-Carrying Wiring Device Manufacturing (335931), Wiring Device Manufacturing (33593)
- SIC
- Electronic Connectors (3678), Electronic & Other Electrical Equipment (No Computer Equip) (3600)
- akta.pro primary industry
- Industrial Plugs, Couplers & Shore Power Interfaces (high-current connectors, interlocks, shore power) (IMAGAEAK)
- akta.pro secondary industry
- Integrated Marine Electrical Systems & Switchboards (IMAJAJAA)
Keywords
Where Smart Plug is headquartered
LocationHeadquarters
- HQ city
- Seattle
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Smart Plug business model
Business model- GTM type
- B2C
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D
Revenue model
- Hardware Product Sales: SmartPlug generates revenue through the sale of physical shore power connection hardware including connectors, inlets, cordsets, combo kits, ELCI sensors and breakers, adapters, accessories, and service parts. Products are sold through a global network of distributors and retailers.
Go-to-market motion2 records
Distribution channels3 records
Marketing channels8 records
Smart Plug product offering
Product offeringCore offering
SmartPlug manufactures and distributes a proprietary line of push-in shore power connection systems, including connectors, inlets, cordsets, combo kits, ELCI breakers and sensors, and accessories. The products replace outdated twist-type marine and RV power connectors using a multi-point locking mechanism with weatherproof sealing, available across 15A to 50A ratings. SmartPlug does not sell direct-to-consumer; all products are sold through a worldwide network of authorized Marine and RV distributors and retailers.
Product overview
SmartPlug is a family of shore power connection products designed for marine, RV, and specialty vehicle applications. The core product line centers on the SmartPlug Connector and SmartPlug Inlet — push-in, multi-point locking shore power plugs and receptacles that replace outdated twist-type designs. These are available across 15A, 16A, 30A, 32A, and 50A ratings. The offering spans connectors, inlets, combo kits, cordsets (including angled RV cordsets and dual-configuration cordsets), ELCI breakers and sensors, dock and lift kits, weathercaps, storage bags, data ports (TV/phone/internet), pedestal retro-fit kits (EATON Lighthouse), and a wide range of pigtail/adapter products. All products feature marine-grade 316 stainless steel external metals, weatherproof seals, and push-straight-in designs with multi-point locking systems.
Differentiator
Problem solved
Functional benefit
Quantifiable outcome
- 20-27 times more metal-to-metal contact than traditional twist-type connectors
- +4 more outcomes
Companies that use Smart Plug
Customer profileNamed customers6 records
Segments4 records
Ideal customer profiles3 records
Smart Plug technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature8 records
Smart Plug partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core.
- Intertek (ETL)coreSmartPlug products have been tested and certified by Intertek, whose ETL mark indicates compliance with safety standards. Intertek has the same accreditations from OSHA as UL but is described as more forward-thinking for new products that revolutionize existing standards.
- IMANNA Testing LaboratoriescoreSmartPlug retrofit plug and inlet products passed the rigorous 30-day salt fog test at IMANNA testing facilities in Florida without any moisture detected on internals. SmartPlug was the first retrofit shorepower plug to achieve this certification.
- North Shore Safety (LineGard)coreNorth Shore Safety manufactures the LineGard PGFM product family, which provides ELCI (Equipment Leakage Circuit Interrupter) ground fault sensing. SmartPlug ELCI products operate in tandem with these components, which are designed and manufactured by North Shore Safety as a leader in innovative safety products.
- Sensata Technologies (Airpax)coreSensata Technologies manufactures the Airpax LEL series UL 489 listed circuit breaker with shunt trip and auxiliary switch, which operates in tandem with the ELCI sensing equipment. The combined assembly meets ABYC E-11 requirements for ground fault protection.
Scale indicators2 records
Recent moves6 records
Expansion highlights5 records
Smart Plug competitors and assessment
Company assessmentMarket position
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
Smart Plug social profiles
Digital presenceSmart Plug financial estimates
Financial estimateRevenue estimate
Valuation estimate
Smart Plug leadership team
Management profileNumber of profiles
Profiles1 record
Smart Plug funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Smart Plug M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Smart Plug
What does Smart Plug do?
SmartPlug manufactures and distributes a proprietary line of push-in shore power connection systems, including connectors, inlets, cordsets, combo kits, ELCI breakers and sensors, and accessories. The products replace outdated twist-type marine and RV power connectors using a multi-point locking mechanism with weatherproof sealing, available across 15A to 50A ratings. SmartPlug does not sell direct-to-consumer; all products are sold through a worldwide network of authorized Marine and RV distributors and retailers.
Is Smart Plug a public or private company?
Smart Plug is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Smart Plug founded?
Smart Plug was founded in 2007. It employs 11 to 50 people.
Where is Smart Plug based?
Smart Plug is headquartered in Seattle, United States, in the North America region.
How does Smart Plug make money?
One revenue line is on record: hardware Product Sales.
Does Smart Plug have an API?
No public API is recorded for Smart Plug.
What industry is Smart Plug in?
Smart Plug's product category is Marine Electrical Equipment. Its primary akta.pro industry code is IMAGAEAK, Industrial Plugs, Couplers & Shore Power Interfaces (high-current connectors, interlocks, shore power), with a secondary code of IMAJAJAA, Integrated Marine Electrical Systems & Switchboards. Its NAICS code is 334417 and its SIC code is 3678.