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ソーラーパネル 400w

Maybe

Shoppers spend an estimated $17.5M a year here. But products sell for $34150.68 on average, outside the sweet spot, so ソーラーパネル 400w is a Maybe.

Flapen Score
58
58 / 100
Top 45% of 4,191 DIY・工具・ガーデン niches · +1 vs the category median of 57
Market size
¥17.5M/yr109K searches / yr
90-day growth
-5.8%search demand this quarter
Competition
41%top-5 click share · 17 brands · 36 sellers

Flapen Score

ソーラーパネル 400w against its category

The dotted line is the DIY・工具・ガーデン average. Past it, ソーラーパネル 400w is stronger. Inside it, weaker.

58Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The ソーラーパネル 400w market on Amazon at a glance

Shoppers on Amazon Japan searched for ソーラーパネル 400w 109K times last year and spent an estimated ¥17.5M. The top 5 brands take 73% of clicks. Flapen scores it 58 out of 100, a Maybe.

01 · Demand

An estimated 0.5% of those searches ended in a purchase.

Shoppers searched for this 109K times in the last 12 months. That counts every search on Amazon Japan for this niche's terms. An estimated 0.5% of those searches ended in a purchase. Searches in the last 90 days moved -5.8% against the 90 days before. Searches, conversion and average price together put the market at an estimated ¥17.5M a year.

Searches, last 12 months
109K
Growth, 90 days vs prior 90
-5.8%
Conversion, latest week
0.5%
Market size, estimated
¥17.5Ma year
Top search term
ソーラーパネル 400w86K searches a year

02 · Price

A sale here is worth ¥34150.68.

Listings sell for ¥34150.68 on average, from ¥7719.36 to ¥75614.21. Amazon reports units sold in ranges. This niche sold 250 to 500 a year. The average listing sells 0 to 100 of them. At ¥34150.68 that is ¥0 to ¥3.4M a year per listing.

Average price
¥34150.68above the $15 to $100 sweet spot
Price range
¥7719.36–¥75614.21
Amazon Japan median price
¥1942.07across 14,733 niches
Units sold a year
250–500
Units per listing a year
0–100
Revenue per listing a year
¥0–¥3.4M
Returns
1.3%of orders · Amazon Japan median 0.4%

03 · Entry bar

The bar here is low.

76% of listings pay for placement with sponsored ads. 27% ship with Prime. On an average day, 21.2% of listings are out of stock. The average listing ranks #137 within 住宅用設備・製品. It carries 48 reviews at 4.15 stars, so a new listing needs social proof before a better product.

Sponsored listings
76%
Prime listings
27%
Out of stock, average day
21.2%
Average rank
#137in 住宅用設備・製品
Average rating
4.15 starsAmazon Japan average 4.15 stars
Average reviews
48per listing
Listings tracked
33

04 · Newcomers

10 of last year's 12 launches cleared the first-year sales bar.

12 products launched here in the last 12 months. 10 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 30 months on average, so a newcomer is not facing entrenched names.

Launched, last 12 months
12
Successful launches
10Amazon's first-year sales bar
Average brand age
30 months

Products

Top ソーラーパネル 400w products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Sign in to see the products

The products selling in this niche are for signed-in readers. Every market figure above stays open to everyone.

Competition

Competition: brands, sellers & click share

The top 5 products take 41% of clicks. Leaders hold, but buyers still shop past them.

Brands

17 flat

Sellers

36

Top-5 brand share

73%

Top 20: 100%

Top-5 click share

41%

Top 20: 86%

Open market

23%

  • Brand 148%
  • Brand 29%
  • Brand 36%
  • Brand 46%
  • Brand 55%
  • Brand 64%

Demand

ソーラーパネル 400w search demand

Weekly searches over the year, seasonality beneath. Pick a range.

5K4KBlack Friday '25Spike '26Prime Day '26SepOctNovDecJanFebMarAprMayJunJul

Peak months: Mar, Apr · busiest ÷ quietest = 2.4× · 11 of 12 months tracked

Search terms

Top ソーラーパネル 400w search terms shoppers use

The exact words shoppers type, with yearly volume, growth, and conversion.

  • ソーラーパネル 400w86K/yr
  • 太陽光パネル 400w10K/yr
  • ソーラーパネル 500w5K/yr
  • 400w ソーラーパネル5K/yr
  • エコフロー ソーラーパネル 400w3K/yr

Reviews and returns

What reviews say buyers love and hate about ソーラーパネル 400w

We read the reviews and the return reasons for every product selling here.

14%of positive reviews mention “コストパフォーマンス”
20%of negative reviews mention “重い”
1.3%of orders come back
“パネルを開く時少し重たい感じがしました。”
A buyer, on “重い”20% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

18 topics

NegativePositive

FAQ

Common ソーラーパネル 400w questions

Answered from the same tracked data.