Community price on backpack.tf: 55.0 keys, last changed 2025-07-22 (1.1y ago). The live quote above, 45.1 keys, is 18% lower and last moved 4h 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.
Steam Market asking price: $147.43 — the lowest of one listing for the Green Energy effect when we looked on 2026-09-04 01:47 UTC (2d ago). This is what a seller is asking, not what anything sold for. Steam pays out in Steam wallet funds, not cash, and Valve takes roughly 15% at the till — so asking prices there run well above the 45 keys, 7.55 ref shown above, which comes from the keys-and-metal market on backpack.tf. The two are different markets and are never blended. Steam lists the item as “Unusual Bottle Cap”, with no effect in the name — the effect comes from the individual listing.
Price history
40 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 Bottle Cap sell price, 2025-09-25 to 2026-09-05: 40 observations, from 56.8 keys to 45.1 keys.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
56.8 keys
46.5 keys
30 SEP 2025 · 22:21 UTC
55.7 keys
45.6 keys
9 OCT 2025 · 09:55 UTC
53.2 keys
47.9 keys
19 OCT 2025 · 21:47 UTC
50.6 keys
45.6 keys
25 OCT 2025 · 18:08 UTC
48.3 keys
43.4 keys
10 NOV 2025 · 02:02 UTC
55.0 keys
49.5 keys
11 DEC 2025 · 08:55 UTC
53.9 keys
44.2 keys
16 DEC 2025 · 14:52 UTC
49.6 keys
45.0 keys
22 DEC 2025 · 01:12 UTC
50.1 keys
27.4 keys
29 DEC 2025 · 00:56 UTC
45.0 keys
31.7 keys
22 JAN 2026 · 17:45 UTC
43.7 keys
29.7 keys
29 JAN 2026 · 01:45 UTC
42.3 keys
8.67 keys
1 FEB 2026 · 23:45 UTC
40.3 keys
28.6 keys
8 FEB 2026 · 22:44 UTC
39.4 keys
19.8 keys
15 FEB 2026 · 22:41 UTC
39.7 keys
29.1 keys
2 MAR 2026 · 08:41 UTC
39.4 keys
27.7 keys
8 MAR 2026 · 10:43 UTC
40.6 keys
28.4 keys
15 MAR 2026 · 18:08 UTC
33.5 keys
17.2 keys
23 MAR 2026 · 20:08 UTC
41.4 keys
18.5 keys
1 APR 2026 · 00:31 UTC
42.4 keys
7.69 keys
8 APR 2026 · 10:31 UTC
34.4 keys
7.63 keys
17 APR 2026 · 16:30 UTC
42.1 keys
19.9 keys
7 MAY 2026 · 02:32 UTC
41.4 keys
32.9 keys
10 MAY 2026 · 06:33 UTC
44.0 keys
35.1 keys
22 MAY 2026 · 06:30 UTC
43.3 keys
35.2 keys
8 JUN 2026 · 00:32 UTC
41.8 keys
34.8 keys
15 JUN 2026 · 08:33 UTC
41.4 keys
34.5 keys
22 JUN 2026 · 17:13 UTC
41.2 keys
35.8 keys
29 JUN 2026 · 03:14 UTC
42.7 keys
37.1 keys
5 JUL 2026 · 11:11 UTC
40.5 keys
35.2 keys
12 JUL 2026 · 18:45 UTC
40.7 keys
35.4 keys
19 JUL 2026 · 22:44 UTC
42.4 keys
36.9 keys
29 JUL 2026 · 04:46 UTC
44.0 keys
38.2 keys
6 AUG 2026 · 07:12 UTC
47.1 keys
41.0 keys
11 AUG 2026 · 17:12 UTC
47.8 keys
41.6 keys
21 AUG 2026 · 02:08 UTC
45.0 keys
39.1 keys
26 AUG 2026 · 02:09 UTC
45.2 keys
39.3 keys
26 AUG 2026 · 14:09 UTC
45.7 keys
39.7 keys
27 AUG 2026 · 20:11 UTC
45.9 keys
39.9 keys
5 SEP 2026 · 14:09 UTC
45.1 keys
39.2 keys
Price history in numbers
40 readings since 25 Sep 2025
Over the last 30 days the Green Energy Bottle Cap's sell price ranged from 45.0 keys to 47.8 keys and is down 5.6% after 5 moves. Over a year it ranged from 33.5 keys to 56.8 keys (down 20.5%). Today's 45.1 keys sits in the middle of its range: the lowest we have recorded is 33.5 keys (15 Mar 2026) and the highest 56.8 keys (25 Sep 2025). The price has moved 39 times since we began recording it — about once every 9 days.