diff --git a/entities/energy/terrestrial-energy.md b/entities/energy/terrestrial-energy.md
new file mode 100644
index 000000000..79aa2b20c
--- /dev/null
+++ b/entities/energy/terrestrial-energy.md
@@ -0,0 +1,21 @@
+# Terrestrial Energy
+
+## Overview
+Canadian advanced nuclear company developing the Integral Molten Salt Reactor (IMSR), a Generation IV reactor design using lithium fluoride-based fluoride salts as combined fuel and coolant.
+
+## Technology
+- **IMSR Design**: 822 MWth / 390 MWe capacity
+- **Operating Temperature**: 600-700°C
+- **Core Innovation**: Fluoride salts serve as both fuel carrier and coolant
+- **Optional Grid Integration**: Can couple with external nitrate salt thermal storage for grid-scale energy buffering, enabling nuclear heat to recharge thermal batteries that complement wind/solar
+- **Chemistry**: Uses lithium fluoride-based salts (distinct from CSP industry's sodium/potassium nitrate)
+
+## Regulatory Progress
+- **September 2025**: NRC approved IMSR Principal Design Criteria
+- **April 23, 2026**: Submitted topical report on safety events to NRC—final stage before Safety Evaluation Report (SER)
+- **Target**: Licensed commercial operation in early 2030s
+- **Strategic Value**: An SER would allow the same safety determination to be referenced in multiple future licensing applications, enabling fleet-scale efficiency
+
+## Timeline
+- **2026-04-23** — Submitted foundational safety topical report to NRC, final step before Safety Evaluation Report
+- **2025-09** — NRC approved IMSR Principal Design Criteria
\ No newline at end of file
diff --git a/entities/energy/x-energy.md b/entities/energy/x-energy.md
new file mode 100644
index 000000000..2ddbdb601
--- /dev/null
+++ b/entities/energy/x-energy.md
@@ -0,0 +1,14 @@
+# X-energy
+
+## Overview
+Advanced nuclear company developing the Xe-100, a pebble bed high-temperature gas-cooled reactor (HTGR).
+
+## Technology
+- **Xe-100 Design**: 200 MWt / ~80 MWe per unit
+- **Heat Transfer**: Pressurized helium as primary coolant
+- **Key Feature**: "Helium remains chemically inert and single-phase at operating temperatures, enabling efficient heat transfer without phase change or material degradation"
+- **Architecture**: Hot helium exits reactor, transfers heat through steam generator into separate water loop
+- **Thermal Approach**: No molten salt in primary or secondary circuits; entirely gas-cooled design with no CSP technology overlap
+
+## Timeline
+- **2026** — Xe-100 design specifications publicly documented
\ No newline at end of file
diff --git a/inbox/queue/2026-04-27-solar-nuclear-convergence-scope-qualification-imsr-xe100.md b/inbox/archive/energy/2026-04-27-solar-nuclear-convergence-scope-qualification-imsr-xe100.md
similarity index 98%
rename from inbox/queue/2026-04-27-solar-nuclear-convergence-scope-qualification-imsr-xe100.md
rename to inbox/archive/energy/2026-04-27-solar-nuclear-convergence-scope-qualification-imsr-xe100.md
index af3043307..106018c3a 100644
--- a/inbox/queue/2026-04-27-solar-nuclear-convergence-scope-qualification-imsr-xe100.md
+++ b/inbox/archive/energy/2026-04-27-solar-nuclear-convergence-scope-qualification-imsr-xe100.md
@@ -7,9 +7,12 @@ date: 2026-04-27
 domain: energy
 secondary_domains: []
 format: thread
-status: unprocessed
+status: processed
+processed_by: leo
+processed_date: 2026-04-27
 priority: high
 tags: [nuclear-renaissance, advanced-reactors, solar-nuclear-convergence, imsr, xe-100, thermal-storage, csp]
+extraction_model: "anthropic/claude-sonnet-4.5"
 ---
 
 ## Content