Community price on backpack.tf: 35.0–37.0 keys, last changed 2021-05-01 (5.4y ago). The live quote above, 29.8 keys, is 15% lower and last moved 2d 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
51 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 Engineer's Cap sell price, 2025-09-25 to 2026-09-03: 51 observations, from 39.0 keys to 29.8 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
39.0 keys
29.4 keys
30 SEP 2025 · 20:09 UTC
37.9 keys
30.2 keys
19 OCT 2025 · 19:39 UTC
34.5 keys
30.2 keys
25 OCT 2025 · 15:56 UTC
32.8 keys
28.8 keys
9 NOV 2025 · 23:57 UTC
35.9 keys
30.6 keys
26 NOV 2025 · 12:48 UTC
78.0 keys
34.1 keys
8 DEC 2025 · 00:43 UTC
76.2 keys
35.0 keys
22 DEC 2025 · 07:07 UTC
84.6 keys
17.3 keys
31 DEC 2025 · 04:45 UTC
76.2 keys
13.2 keys
11 JAN 2026 · 23:30 UTC
67.9 keys
39.2 keys
22 JAN 2026 · 01:43 UTC
69.6 keys
42.8 keys
30 JAN 2026 · 07:42 UTC
66.1 keys
43.6 keys
1 FEB 2026 · 23:42 UTC
65.7 keys
42.1 keys
15 FEB 2026 · 22:39 UTC
66.1 keys
48.1 keys
22 FEB 2026 · 22:39 UTC
64.6 keys
45.9 keys
1 MAR 2026 · 00:40 UTC
64.1 keys
46.5 keys
15 MAR 2026 · 22:06 UTC
59.3 keys
47.9 keys
22 MAR 2026 · 10:05 UTC
67.4 keys
52.6 keys
30 MAR 2026 · 18:29 UTC
69.0 keys
19.7 keys
5 APR 2026 · 22:28 UTC
69.0 keys
35.7 keys
19 APR 2026 · 22:29 UTC
65.6 keys
52.6 keys
29 APR 2026 · 00:29 UTC
61.7 keys
51.4 keys
3 MAY 2026 · 22:30 UTC
60.7 keys
50.8 keys
10 MAY 2026 · 14:30 UTC
64.6 keys
56.4 keys
24 MAY 2026 · 16:29 UTC
67.1 keys
56.4 keys
1 JUN 2026 · 06:29 UTC
64.8 keys
57.1 keys
8 JUN 2026 · 06:30 UTC
63.9 keys
55.9 keys
23 JUN 2026 · 17:14 UTC
66.5 keys
57.8 keys
29 JUN 2026 · 05:13 UTC
66.6 keys
57.9 keys
5 JUL 2026 · 23:12 UTC
62.9 keys
54.7 keys
12 JUL 2026 · 18:45 UTC
65.2 keys
56.7 keys
29 JUL 2026 · 16:44 UTC
69.2 keys
60.1 keys
3 AUG 2026 · 00:24 UTC
72.6 keys
63.2 keys
10 AUG 2026 · 05:10 UTC
73.0 keys
63.5 keys
23 AUG 2026 · 06:08 UTC
20.9 keys
18.2 keys
25 AUG 2026 · 18:09 UTC
22.2 keys
19.3 keys
26 AUG 2026 · 10:08 UTC
21.9 keys
19.0 keys
27 AUG 2026 · 04:10 UTC
21.3 keys
18.5 keys
2 SEP 2026 · 06:08 UTC
67.6 keys
28.8 keys
3 SEP 2026 · 10:08 UTC
29.8 keys
25.9 keys
Price history in numbers
51 readings since 25 Sep 2025
Over the last 30 days the Green Energy Engineer's Cap's sell price ranged from 18.1 keys to 73.0 keys and is down 59.2% after 8 moves. Over a year it ranged from 18.1 keys to 84.6 keys (down 23.5%). Today's 29.8 keys sits in the lower third of its range: the lowest we have recorded is 18.1 keys (31 Aug 2026) and the highest 84.6 keys (22 Dec 2025). The price has moved 49 times since we began recording it — about once every 7 days.
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