generator plug
Skip itSoft demand (-59.7% this quarter) — this niche doesn't clear our bar today.
Avg price
Incredible$29.83avg listing price — sweet spot $15–$100
Price range
Great$6.21–$87.98cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good655.43avg incumbent reviews — the moat a new listing must climb
Returns
Good2.3%return rate — above 5% kills the launch gate
Brand share
Good69%top-5 brand share — brands hold most of the demand
Conversion
Good4.7%search→purchase rate — share of searches ending in a sale
Competition
Okay60%top-5 click share — leaders hold, buyers still browse
Market size
Okay$190K$190K/yr · 136K searches
Quality gap
Bad4.8★avg incumbent rating — lower means beatable quality
Growth
Bad-59.7%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, generator plug is a $190K/yr Amazon United States market (136K searches/yr). The top 5 brands hold 69% of demand. Demand peaks in Jan–Oct. Verdict: Skip it — 45/100.
Data updated Jul 23, 2026 · scored weekly · How we score niches
generator plug market data
- Units sold / yr
- 8K–10K
- avg 250–500/product
- Revenue / yr
- $239K–$298K
- units × avg price
- Conversion rate
- 4.7%
- Avg BSR
- #93
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 90%
- Out of stock
- 0.5%
- Avg brand age
- 55 months
- Avg seller age
- 170 days
Competition & brand share
The top 5 products take 60% of clicks — established leaders, but buyers still shop beyond them.Brands
16 falling
Sellers
39
Top-5 brand share
69%
Top 20: 100%
Top-5 click share
60%
Top 20: 99%
Open market
25%
- ELEGRP31%
- RVMATE11%
- ENERLITES11%
- CircleCord8%
- Leviton7%
- RVINGPRO7%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -59.7% search growth over the last 90 days.Peak months: Jan, Oct · busiest ÷ quietest = 4.0×
Top generator plug search terms
- l14-30p28K/yr
- generator plug32K/yr
- 30 amp generator plug17K/yr
- l14-3013K/yr
- nema l14-30p10K/yr
- nema l14-307K/yr
- generator plugs7K/yr
- 4 prong generator plug6K/yr
- generator 240v plug3K/yr
- generator plug for house5K/yr
Top generator plug products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 21 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
ELEGRP NEMA L14-30P Locking Plug Generator Twist Lock Adapter Male Plug 30 Amp 125/250V 3 Pole 4 Wire Grounding Industrial Grade Heavy Duty UL Listed (1 Pack Black/White)
ELEGRP$9.774.7★1,483 rev
ENERLITES NEMA L14-30P Locking Plug Connector for Generator Twist Lock Male Plug 30 Amp 125/250 Volt 3 Pole 4 Wire Grounding Industrial Grade Heavy Duty UL Listed 66470-BK Black
ENERLITES$9.684.7★2,284 rev
Pre-Drilling 30 Amp Generator Inlet Box NEMA L14-30P Power Inlet Box
RVMATE$29.054.8★427 rev
Leviton 30 Amp 125/250 Volt NEMA L14-30P 3P 4W Locking Plug Industrial Grade Grounding 2711 Black-White
Leviton$16.304.8★1,908 rev
CircleCord 30 Amp 4 Prong Generator Power Inlet Box NEMA L14-30P Power Inlet Box for 4 Prong Generator Cord 125/250 Volt 7500 Watts Weatherproof Outdoor Use for Emergency Ready ETL Listed
CircleCord$24.024.7★300 rev
Newest
by launch date
ELEGRP 30 Amp Generator to RV Adapter Cord NEMA L14-30P to TT-30R 4 Prong to 3 Prong Generator Adapter Plug Heavy Duty Dogbone Electrical Converter Twist Lock Male for Camper Travel Trailer 1FT
ELEGRP$19.9722 rev
MECMO 30Amp L14-30P Generator Locking Plug UL Listed Twist Lock 30 Amp 4 Prong Generator Male Plug Connector 125/250 Volt 3 Pole 4 Wire Grounding Industrial-Strength Heavy Duty
MECMO$11.7128 rev
HIITIO NEMA L14-30P Locking Plug AC150V Locking Plug Connector for Generator Grounding Electrical Replacement Industrial Grade UL Listed L14-30P
HIITIO$6.218 rev
Ficstar 15FT 50 Amp Generator Cord and Power Inlet Box Kit NEMA 14-50P to SS2-50R Generator Cord Pre-Drilled 50 Amp Generator Inlet Box with 6/3+8/1 AWG STW Wire 125/250V 12500W UL&ETL Listed
Ficstar$87.98194 rev
Champion Power Equipment 2 ft. 30A 250V Generator Adapter Cord
Champion Power Equipment$35.4814 rev
Trending
90-day click momentumELEGRP 30 Amp Generator to RV Adapter Cord NEMA L14-30P to TT-30R 4 Prong to 3 Prong Generator Adapter Plug Heavy Duty Dogbone Electrical Converter Twist Lock Male for Camper Travel Trailer 1FT
ELEGRP$19.974.8★
Champion Power Equipment 2 ft. 30A 250V Generator Adapter Cord
Champion Power Equipment$35.485.0★
HIITIO NEMA L14-30P Locking Plug AC150V Locking Plug Connector for Generator Grounding Electrical Replacement Industrial Grade UL Listed L14-30P
HIITIO$6.215.0★
MECMO 30Amp L14-30P Generator Locking Plug UL Listed Twist Lock 30 Amp 4 Prong Generator Male Plug Connector 125/250 Volt 3 Pole 4 Wire Grounding Industrial-Strength Heavy Duty
MECMO$11.714.7★
RVMATE Pre-Drilling 50 Amp Generator Inlet Box NEMA SS2-50P Inlet Box
RVMATE$31.334.7★
What buyers say about generator plug
What buyers praise and complain about, mined from review topics.What buyers love
“Quality junction box”
“Just what I needed”
“The box works as expected with a clean installation”
“great product and reasonable price”
“Plug seems well made & sturdy”
“The wiring box was sturdy”
“Nice fit”
“Well, made easy to connect good price”
“Easy to use and durable”
“Works great”
What buyers complain about
“The terminal screw tightening mechanism is poor quality”
“this is too cheaply made”
“this one is also rusted”
“to small of an inlet”
“Third, assembling the box was very difficult because #6 wire was stiff and the box is small- a lot of force is required to get the wire to bend tightly, and that force is enough to pull the wires out”
“Really bad engineering”
“Broke”
“Not compatible with Reliant manual transfer switch”
“They can falsely claim listing on here”
“Not water proof”
Top return reasons
Common questions
- Is generator plug profitable to sell on Amazon United States?
- The niche generates $190K/yr across 21 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -59.7%. Flapen's verdict: Skip it (45/100).
- How competitive is the generator plug niche?
- 16 brands and 39 sellers compete. The top 5 products take 60% of clicks and top 5 brands hold 69% of demand.
- What do buyers complain about in generator plug?
- Top complaints mined from reviews: Mounting, Quality-Overall, Rusts/Corrodes. The return rate is 2.3%.
- When does demand for generator plug peak?
- Demand peaks in Jan–Oct; the busiest month runs 4.0× the quietest.
- What does it cost to enter the generator plug niche?
- Listings span $6.21–$87.98; the average listing price is $29.83 (sweet spot $15–$100). The average incumbent carries 655 reviews — the moat a new listing must climb.