---
title: "Kill a Watt — $320K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/kill-a-watt"
last_updated: "2026-08-09T04:26:45.999Z"
locale: en
meta:
description: "Niche score 41/100 · $320K/yr market · 174K searches/yr · $23.74 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 41/100 · $320K/yr market · 174K searches/yr · $23.74 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Kill a Watt — $320K/yr Amazon US Niche (2026) - Flapen"
---
# **kill a watt**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 52Growth 21Conversion 78Competition 16Returns 59Price range 84Avg price 95Brand share 0Review moat 26Quality gap 40
**Avg price**
**Incredible****$23.74**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.69–$47.08**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****7.8%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Good****2.6%**
return rate — above 5% kills the launch gate
**Market size**
**Good****$320K**
$320K/yr · 174K searches
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****3,854**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-7.4%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****81%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, kill a watt is a $320K/yr Amazon United States market (174K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 41/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **kill a watt market data**
- **Units sold / yr**
- **13K–15K**
- avg 1,000–1,250/product
- **Revenue / yr**
- **$297K–$356K**
- units × avg price
- **Conversion rate**
- **7.8%**
- **Avg BSR**
- **#306**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **80%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **51 months**
- **Avg seller age**
- **176 days**
## **Competition & brand share**
The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **—flat
**Sellers**
**43**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**81%**
Top 20: 100%
**Open market**
**0%**
- MECHEER47% - P333% - KILL A WATT11% - Tapo5% - HBN5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -7.4% search growth over the last 90 days.
5K4KSpike '24Holiday '24Prime Day '25Holiday '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/kill-a-watt/trend)
## **Top kill a watt search terms**
- **kill a watt meter**50K/yr-14.4%8.6% conv. - **kill a watt**55K/yr-11.0%7.9% conv. - **killawatt meter**23K/yr+6.7%7.1% conv. - **kill-a-watt meter**13K/yr+0.7%5.0% conv. - **killawatt**9K/yr+7.2%6.3% conv. - **kill-a watt**6K/yr+27.5%3.8% conv. - **kill a watt electricity usage monitor**6K/yr-7.0%6.8% conv. - **kill-a-watt**7K/yr-9.2%7.2% conv. - **kilowatt**3K/yr+88.3%2.1% conv. - **kill a watt power meter**2K/yr-78.7%3.8% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/kill-a-watt/search-terms)
## **Top kill a watt 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.
0%10%$32K20%$64K30%$96K40%$128K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 10 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Upgraded Watt Power Meter Plug Home Electrical Usage Monitor Consumption Energy Voltage Amps Kill Tester with Backlight Overload Protection 7 Modes Display**MECHEER**$12.05**4.6★8,377 rev](https://www.amazon.com/dp/B09BQNYMMM) [2**P3 P4400 Kill A Watt Electricity Usage Monitor**P3**$30.70**4.6★9,752 rev](https://www.amazon.com/dp/B00009MDBU) [3**P3 International P4460 Kill A Watt EZ Electricity Usage Monitor grey**P3**$33.79**4.4★3,912 rev](https://www.amazon.com/dp/B000RGF29Q) [4**Upgraded Watt Meter Power Meter Plug Home Energy Monitor Electricity Usage Monitor Electrical Usage Monitor Energy Voltage Amps Meter Tester with Backlight Overload Protection 8 Display Modes**MECHEER**$9.96**4.6★3,148 rev](https://www.amazon.com/dp/B0BR7Y5PYW) [5**Kill A Watt Connect P4498 Electricity Usage Monitor Power Consumption Meter with Two Piece Housing and 35 Inch Cord for Easy Use**KILL A WATT**$47.08**4.4★138 rev](https://www.amazon.com/dp/B0CVS4WXM9)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**TP-Link Smart Plug Wi-Fi Mini Energy Monitoring Compatible with Alexa & Google Home & Samsung SmartThings Timer 15A/1800W Max ETL Certified 2.4G Wi-Fi Only Tapo P115(4-Pack)**Tapo**$25.37**3,330 rev2y ago](https://www.amazon.com/dp/B0D7FZ97T5) [**Upgraded Watt Meter Watt Usage Meter Plug Home Energy Monitor Consumption Electricity Usage Monitor Energy Voltage Amps Kill Tester with Backlight Overload Protection 8 Modes Display**MECHEER**$9.93**464 rev2y ago](https://www.amazon.com/dp/B0D5QMK3BP) [**Kill A Watt Connect P4498 Electricity Usage Monitor Power Consumption Meter with Two Piece Housing and 35 Inch Cord for Easy Use**KILL A WATT**$47.08**138 rev2y ago](https://www.amazon.com/dp/B0CVS4WXM9) [**P3 International P4456 Kill A Watt Flex Electricity Usage Monitor Advanced Power Meter with Data Memory CO Tracking & Cost Calculator Upgrade from P4400 Watt Meter**KILL A WATT**$42.89**77 rev3y ago](https://www.amazon.com/dp/B0C4G7QVZT) [**Upgraded Watt Meter Power Meter Plug Home Energy Monitor Electricity Usage Monitor Electrical Usage Monitor Energy Voltage Amps Meter Tester with Backlight Overload Protection 8 Display Modes**MECHEER**$9.96**3,148 rev3y ago](https://www.amazon.com/dp/B0BR7Y5PYW)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Upgraded Watt Meter Power Meter Plug Home Electricity Usage Monitor Electrical Usage Monitor Consumption Energy Voltage Amps Kill Meter with Backlight Overload Protection 7 Modes Display-With Cord**MECHEER**$15.98**4.6★**▲ 94%**](https://www.amazon.com/dp/B09NM8ZQKG) [**P3 International P4456 Kill A Watt Flex Electricity Usage Monitor Advanced Power Meter with Data Memory CO Tracking & Cost Calculator Upgrade from P4400 Watt Meter**KILL A WATT**$42.89**4.3★**▲ 76%**](https://www.amazon.com/dp/B0C4G7QVZT) [**HBN Watt Meter Plug with Backlight Plug-in Socket Power Meter Electricity Usage Monitor Consumption Home Electrical Energy Monitor Voltage Amps Wattage Electricity Usage Tester 9 Display Modes**HBN**$9.69**4.6★**▲ 29%**](https://www.amazon.com/dp/B09MHGK6MT) [**Upgraded Watt Meter Power Meter Plug Home Energy Monitor Electricity Usage Monitor Electrical Usage Monitor Energy Voltage Amps Meter Tester with Backlight Overload Protection 8 Display Modes**MECHEER**$9.96**4.6★**▲ 15%**](https://www.amazon.com/dp/B0BR7Y5PYW) [**Upgraded Watt Power Meter Plug Home Electrical Usage Monitor Consumption Energy Voltage Amps Kill Tester with Backlight Overload Protection 7 Modes Display**MECHEER**$12.05**4.6★**— 3%**](https://www.amazon.com/dp/B09BQNYMMM)
**~~View all trending →~~**
## **What buyers say about kill a watt**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Ease Of Use**23%
*“Easy to read”*
**Advertised Vs Actual Product**16%
*“As described”*
**Quality-Overall**13%
*“Excellent product”*
**Value For Money**12%
*“Great deal”*
**Efficiency**7%
*“Great product for testing cost of electrical devices in the home”*
**Measurement/Reading Accuracy**6%
*“They appear to be accurate”*
**Assembly/Installation**4%
*“Easy setup”*
**Battery Life**2%
*“Great Power Meter”*
**Functionality-Overall**2%
*“Otherwise, It's a nice device, works as expected, has enough functions”*
**Socket/Port/Plug**1%
*“the plug/socket remain on the wall with the display/buttons are easy to use”*
### **What buyers complain about **
**Measurement/Reading Accuracy**11%
*“cost results just do not reflect an accurate readout”*
**Instructions/User Manual/Troubleshooting**11%
*“Instructions Poor”*
**Durability**10%
*“Broke after three days”*
**Functionality-Overall**7%
*“Did not work”*
**Ease Of Use**6%
*“Does not provide for simple use”*
**Quality-Overall**6%
*“They should do a better job at quality control”*
**Connectivity-Overall**5%
*“It just won't connect”*
**Size-Overall**4%
*“So big and bulky that it blocks both outlets”*
**Display-Overall**4%
*“next morning the screen would not react”*
**Value For Money**3%
*“how much it is costing me to run”*
### **Top return reasons **
**Functionality-Overall**20%
**Connectivity-Overall**9%
**Compatibility-Overall**9%
**Advertised Vs Actual Product**8%
**Size-Overall**8%
**Measurement/Reading Accuracy**7%
**Value For Money**7%
**Defective Material/Parts**6%
**Display-Overall**6%
**Socket/Port/Plug**4%
## **Common questions**
- **Is kill a watt profitable to sell on Amazon United States?**
- The niche generates $320K/yr across 10 tracked products. 90-day search growth is -7.4%. Flapen's verdict: Skip it (41/100).
- **How competitive is the kill a watt niche?**
- 5 brands and 43 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in kill a watt?**
- Top complaints mined from reviews: Measurement/Reading Accuracy, Instructions/User Manual/Troubleshooting, Durability. The return rate is 2.6%.
- **When does demand for kill a watt peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the kill a watt niche?**
- Listings span $9.69–$47.08; the average listing price is $23.74 (sweet spot $15–$100). The average incumbent carries 3,854 reviews — the moat a new listing must climb.
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