Community price on backpack.tf: 125 keys, last changed 2025-05-05 (1.3y ago). The live quote above, 76.3 keys, is 39% lower and last moved 22d 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: $533.35 — the lowest of one listing for the Green Energy effect when we looked on 2026-09-01 01:41 UTC (5d 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 76 keys, 18.44 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 Hellmet”, with no effect in the name — the effect comes from the individual listing.
Price history
24 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 Hellmet sell price, 2025-09-25 to 2026-08-15: 24 observations, from 124 keys to 76.3 keys.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
124 keys
102 keys
30 SEP 2025 · 21:27 UTC
124 keys
102 keys
9 OCT 2025 · 09:08 UTC
119 keys
107 keys
19 OCT 2025 · 20:56 UTC
113 keys
102 keys
25 OCT 2025 · 17:19 UTC
108 keys
96.8 keys
10 NOV 2025 · 01:19 UTC
106 keys
95.2 keys
2 MAR 2026 · 16:41 UTC
150 keys
105 keys
8 MAR 2026 · 04:43 UTC
149 keys
106 keys
17 MAR 2026 · 10:07 UTC
158 keys
113 keys
2 APR 2026 · 22:31 UTC
162 keys
70.8 keys
11 APR 2026 · 12:31 UTC
159 keys
62.6 keys
21 APR 2026 · 22:29 UTC
157 keys
68.4 keys
1 MAY 2026 · 10:30 UTC
146 keys
91.0 keys
15 MAY 2026 · 10:32 UTC
155 keys
115 keys
24 MAY 2026 · 14:30 UTC
154 keys
118 keys
1 JUN 2026 · 00:30 UTC
156 keys
120 keys
8 JUN 2026 · 06:31 UTC
142 keys
119 keys
15 JUN 2026 · 08:32 UTC
138 keys
78.4 keys
23 JUN 2026 · 15:13 UTC
88.0 keys
76.5 keys
1 JUL 2026 · 11:13 UTC
80.8 keys
70.3 keys
10 JUL 2026 · 08:44 UTC
81.4 keys
70.8 keys
18 JUL 2026 · 12:44 UTC
72.8 keys
63.2 keys
31 JUL 2026 · 08:44 UTC
76.5 keys
66.6 keys
15 AUG 2026 · 03:11 UTC
76.3 keys
66.3 keys
Price history in numbers
24 readings since 25 Sep 2025
The price has not been re-read inside the last 30 days. Over a year it ranged from 72.8 keys to 162 keys (down 38.7%). Today's 76.3 keys sits at the bottom of its range: the lowest we have recorded is 72.8 keys (18 Jul 2026) and the highest 162 keys (2 Apr 2026). The price has moved 23 times since we began recording it — about once every 14 days.