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Green Energy Whoopee Cap

✦ Green EnergyUnusual1mo ago

This price has not changed since 2026-09-29 20:09 UTC. It reflects the last observed trade rather than current market value, and this page is excluded from our sitemap for that reason.

Sell price
68 keys, 18.11 ref
Buy price
59 keys, 24.11 ref
In keys
68.3 keys
In USD
$146.81 at the Steam key rate

Community price on backpack.tf: 67.0 keys, last changed 2026-11-01 (4d ago). The live quote above, 68.3 keys, is 2% higher and last moved 1mo ago. They are different measures: the quote is what traders and bots are asking and bidding on the classifieds right now, and it moves for thousands of items every day; the community price is a suggestion accepted by vote, which changes only when someone argues it should. A quote well away from the vote is usually a price that is about to be re-argued. Community prices from backpack.tf, read under an hour ago.

Price history

105 observations

Interactive chart. Press the left and right arrow keys to move along the series, Home or End to jump to either end, Escape to clear.

The key axis converts at today's rate. Prices are recorded in metal, so a line that is flat in keys followed the key rate rather than standing still.

Green Energy Whoopee Cap sell price, 2025-09-25 to 2026-11-03: 105 observations, from 47.4 keys to 65.6 keys. Sampled evenly across the range.
Observed (UTC)SellBuy
25 SEP 2025 · 03:29 UTC47.4 keys38.8 keys
19 OCT 2025 · 19:52 UTC43.0 keys38.7 keys
10 NOV 2025 · 00:12 UTC46.8 keys42.1 keys
30 DEC 2025 · 12:45 UTC84.0 keys59.0 keys
25 JAN 2026 · 11:42 UTC71.3 keys63.0 keys
8 FEB 2026 · 22:41 UTC64.7 keys58.7 keys
1 MAR 2026 · 06:41 UTC64.7 keys47.7 keys
24 MAR 2026 · 10:06 UTC64.0 keys50.3 keys
5 APR 2026 · 06:29 UTC69.6 keys49.8 keys
29 APR 2026 · 08:29 UTC61.9 keys49.6 keys
17 MAY 2026 · 22:30 UTC64.1 keys51.7 keys
8 JUN 2026 · 02:29 UTC64.1 keys51.7 keys
29 JUN 2026 · 07:13 UTC63.6 keys55.3 keys
29 JUL 2026 · 00:45 UTC65.2 keys56.8 keys
10 AUG 2026 · 11:10 UTC68.5 keys59.5 keys
22 AUG 2026 · 08:08 UTC66.6 keys57.9 keys
25 AUG 2026 · 16:09 UTC66.7 keys58.0 keys
26 AUG 2026 · 18:08 UTC68.3 keys59.4 keys
29 AUG 2026 · 12:09 UTC68.4 keys59.4 keys
31 AUG 2026 · 04:09 UTC67.7 keys58.9 keys
3 SEP 2026 · 08:09 UTC66.5 keys57.8 keys
4 SEP 2026 · 00:08 UTC66.9 keys58.2 keys
6 SEP 2026 · 18:08 UTC66.2 keys57.5 keys
7 SEP 2026 · 22:08 UTC67.5 keys58.7 keys
12 SEP 2026 · 14:07 UTC67.3 keys58.5 keys
17 SEP 2026 · 06:08 UTC67.4 keys58.6 keys
20 SEP 2026 · 18:09 UTC68.0 keys59.1 keys
22 SEP 2026 · 08:08 UTC68.6 keys59.6 keys
24 SEP 2026 · 12:08 UTC69.0 keys60.0 keys
28 SEP 2026 · 06:10 UTC69.2 keys60.2 keys
29 SEP 2026 · 08:08 UTC68.4 keys59.5 keys
3 OCT 2026 · 23:09 UTC67.4 keys58.6 keys
5 OCT 2026 · 07:09 UTC67.9 keys59.0 keys
8 OCT 2026 · 01:09 UTC68.1 keys59.2 keys
12 OCT 2026 · 03:09 UTC68.6 keys59.7 keys
18 OCT 2026 · 11:08 UTC68.5 keys59.5 keys
19 OCT 2026 · 07:07 UTC68.6 keys59.6 keys
20 OCT 2026 · 21:12 UTC67.3 keys61.2 keys
30 OCT 2026 · 03:11 UTC66.7 keys60.7 keys
3 NOV 2026 · 21:11 UTC65.6 keys59.7 keys

Price history in numbers

105 readings since 25 Sep 2025

Over the last 30 days the Green Energy Whoopee Cap's sell price ranged from 65.6 keys to 69.1 keys and is down 5.2% after 15 moves. Over a year it ranged from 46.8 keys to 92.4 keys (up 40.0%). Today's 65.6 keys sits in the middle of its range: the lowest we have recorded is 41.0 keys (25 Oct 2025) and the highest 92.4 keys (16 Dec 2025). The price has moved 102 times since we began recording it — about once every 4 days.

WindowLowHighChangeMovesReadings
30 days65.6 keys69.1 keys−5.2%1518
90 days65.6 keys69.6 keys−4.2%6568
a year46.8 keys92.4 keys+40.0%97100

Details

SKU174;5;u9
Last price change2026-09-29 20:09 UTC
Key rate when recorded63.44 ref

Same effect, other items

the effect across the catalogue
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Green Energy Lucky Cat Hat1,200 keys12mo ago
Green Energy Decorated Veteran1,050 keys12mo ago
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Green Energy Team Captain900 keys1mo ago

Other effects on the Whoopee Cap

same item, different effect

Priced similarly

across the catalogue