Severe Energy Alluvium Farming Guide
Combat Mining, Turret Defense & Rare Materials
Last updated: 2026-02-04
Complete guide to Severe Energy Alluvium farming in Arknights: Endfield. Learn optimal turret defense setups, node locations across Valley IV and Wuling, daily respawn timers, and how to efficiently harvest weapon materials like Kalkonyx, Auronyx, and Umbronyx. Updated February 2026.
* TL;DR - Key Points
- * Severe Energy Alluvium are hard-mode mineral nodes requiring turret defenses and combat
- * Unlocks at Exploration Level 4+ or Authority Level 40+
- * Yields rare minerals (Kalkonyx, Auronyx, Umbronyx, Igneosite) for weapon ascension
- * Turret killzones are essential for efficient farming (Gun, Grenade, Sentry towers)
- * Respawns daily at 4AM server time
- * Cannot abuse for Stock Bill farming (has daily collection limits)
- * Severe nodes have 60-80 Sanity cost vs 40-60 for normal nodes
Contents
What Is Severe Energy Alluvium?
Severe Energy Alluvium are hard-mode mineral combat-encounters scattered across Talos-II. When approached, they trigger enemy spawns that must be defeated to harvest rare minerals for weapon tuning and ascension.
Two Difficulty Tiers
Energy Alluvium (Normal)
- • Early-game accessible
- • 40-60 Sanity cost
- • Stable/Clean essences
Severe Energy Alluvium (Hard)
- • Unlocks at Level 40+
- • 60-80 Sanity cost
- • Clean/Flawless essences
Primary Resources
- Kalkonyx - Weapon ascension
- Auronyx - Advanced tuning
- Umbronyx - High-tier ascension
- Igneosite - Endgame upgrades
Why Turret Defense Matters
Quests recommend building turrets at alluvium nodes for efficient resource gathering (Tip #242, Reddit user Pa_Tra, 69 upvotes). This transforms active combat into passive farming.
Alluvium Node Locations
Severe Energy Alluvium spawns throughout both major regions. 3-4 nodes per zone area on daily reset cycle.
Valley IV - High Density
- • The Hub (6 spawns)
- • Valley Pass
- • Aburrey Quarry
- • Originium Science Park
- • Origin Lodespring
- • Power Plateau
Wuling - Late Zones
- • Jingyu Valley
- • Treasure Grotto
- • Zhailing Islet
- • Sky King Flats
- • Wuling City
- • Field Logistics Depot
Use Interactive Map
Check respawn timers and mark collected nodes for cooldown tracking.
Pins auto-refresh daily at 4 AM.
Optimal Turret Setup Strategy
Power Chain (Critical)
Proper power sequence ensures turret functionality at node locations:
Thermal Bank (80m range) → Relay Tower (80m) → Electric Pylon (30m) → Turrets
Optimal Turret Configuration
Gun Towers x3
Primary damage vs regular mobs
HE Grenade Towers x2
AoE for clustered spawns
Sentry Tower
Elite enemy specialist
Beam Tower (opt.)
Boss-tier spawns
Pro Tip: Pre-Position Turrets
Place turrets before triggering combat. This prevents wasted time and ensures all enemies spawn inside killzone range. Severe nodes can spawn Lv.60-80 enemies - turrets are essential for survival.
Why Turret Defense Works
- • Team auto-defends once first enemy hit
- • Passive collection while you travel
- • 1-2 min setup saves 5+ min combat
- • Required for Severe difficulty
Power Range Expertise
- • Thermal Bank: 80m
- • Relay Tower: 80m
- • Electric Pylon: 30m
- • Chain sequence matters
Farming Mechanics
| Node Type | Sanity Cost | Unlock | Yield Quality |
|---|---|---|---|
| Energy Alluvium | 40-60 | None | Stable/Clean |
| Severe Energy Alluvium | 60-80 | Level 40+ | Clean/Flawless |
Daily Reset System
Nodes refresh automatically with daily reset at 4:00 AM server time (US/EU: UTC-5, Asia: UTC+8). Interactive map pins auto-update with respawn timers.
Collection limits prevent infinite farming - nodes enter cooldown after harvest until next reset.
⚠ Stock Bill Farming Warning
Energy Alluvium does NOT produce Stock Bills. The "PSA: You can't abuse Energy Alluvium" post confirms nodes yield weapon materials only. Stock Bills come from factory trading and Regional Development Authority.
Material Usage
- • Weapon Tuning - Basic upgrades
- • Weapon Ascension - Rarity tier upgrades
- • Operator Equipment - Gear upgrades
Farming Route (Daily)
- 1. Check Interactive Map
- 2. Fast travel to highest density
- 3. Pre-place 3-4 turret networks
- 4. Rotate collection while turrets clear
- 5. Mark collected nodes
Pro Tips for Maximum Efficiency
- Hunter Mode (Level 5): Always use the 2x drop multiplier for 2x Sanity cost - essential for endgame weapon progression
- Severe Priority: Avoid normal nodes entirely once Level 40 unlocks - severe nodes are objectively more efficient
- Simultaneous Networks: Place 3-4 turret setups at once. While one clears, travel to next location
- Shared Defenses: Other players' turrets provide shared benefits - look for active defenses
Common Mistakes & How to Avoid Them
1. No Turret Setup
Trying to manually combat Severe Energy Alluvium at Lv.40+ without defenses.
Fix: Severe nodes spawn Lv.60-80 enemies. Minimum Gun Towers + Sentry required for survival.
2. Wrong Power Chain Order
Turrets not functioning due to insufficient power range.
Fix: Chain sequence matters: Thermal Bank (80m) → Relay Tower (80m) → Electric Pylon (30m). Never place Pylon first.
3. Farming Normal After Unlock
Wasting 40 Sanity on normal when severe nodes exist.
Fix: Severe nodes yield 2-3x better materials. Immediately stop normal farming at Level 40.
4. Ignoring Interactive Map
Wasting time traveling to cooldown nodes.
Fix: Check map before every session. Pins auto-update with respawn timers.
5. Expecting Stock Bills
Farming alluvium expecting Stock Bill currency.
Fix: Alluvium provides weapon materials ONLY. Stock Bills come from factory trading and Regional Development Authority.
6. Single-Node Farming (Correct Approach)
Clearing nodes one-by-one, returning to base between each.
Fix: Set up 3-4 turret networks simultaneously. While one clears, travel to the next location - massive efficiency gain.
Quick Reference: Severe Energy Alluvium Checklist
Frequently Asked Questions
How do you unlock Severe Energy Alluvium in Arknights: Endfield?
Severe Energy Alluvium nodes unlock at Authority Level 40+ or Exploration Level 4+. These hard-mode mineral nodes have higher Sanity cost (60-80) but yield superior weapon materials like Clean and Flawless essences.
What is the best turret setup for Severe Energy Alluvium?
Optimal setup: 3 Gun Towers for basic mobs, 2 HE Grenade Towers for AoE, 1 Sentry Tower for elites, powered via Thermal Bank → Relay Tower → Electric Pylon chain. Place turrets before triggering combat.
Where are the best locations to farm Severe Energy Alluvium?
Highest density zones: Origin Lodespring (Valley IV), Jingyu Valley (Wuling), The Hub (Valley IV), and Wuling City. Use the Interactive Map to track respawn timers (4 AM daily reset).
Can you abuse Energy Alluvium to farm Stock Bills?
No. Energy Alluvium provides weapon materials only (Kalkonyx, Auronyx, Umbronyx) for tuning and ascension. Stock Bills come from factory trading, Regional Development Authority, and Depot Node deliveries.