TargetEcon Wiki
A colleague-facing reference front for the TargetEcon model: policy context, model structure, data provenance, measures, and scenario notes in one place.
Found something unclear or incorrect? Use the feedback flow rather than editing markdown directly. That keeps changes reviewed against the model and source files.
Read the model overview, solve structure, and major measure categories.
Check prerequisites, scenario switches, and required input files.
Browse the implemented N, P, combined, and infrastructure measures.
Report a correction, add context, or flag a documentation mismatch.
TargetEcon Wiki — Master Index
Last updated: 2026-04-09 | Pages: 60 | Sources ingested: 6 (main .gms, differentiation_effects.inc, DCA 174, SR379, Rolighed et al. 2025, P Project 2025 Scenario 1 results)
🗺️ Start here
| Page |
Description |
| Model Overview |
What the model is, what it does, how it fits together |
| How to Run |
Prerequisites, scenario configuration, solver settings, file checklist |
| Measures Overview |
Summary table of all 35 measures with targets, costs, and effects |
| Cost-Effectiveness Overview |
Indicative CE ranges for all measures; the NR retention advantage |
🏗️ Model Structure
| Page |
Description |
| Objective & Costs |
Objective function, cost components, penalty structure |
| N Reduction |
How N reductions are computed — retention types, routing, equations |
| P Reduction |
How P reductions are computed — three pathways, lake chains, routing |
| Constraints |
Mutual exclusions, tripartite floors, P wetland constraints, VP2 legacy |
| Spatial Hierarchy |
Fields → ID15s → coastal catchments → lake chains |
| Biodiversity target (B) |
Placeholder — not yet implemented in TargetEcon 2026 |
| Climate target (C) |
Placeholder — not yet implemented in TargetEcon 2026 |
| How to Run |
Practical guide to running the model |
🌱 Measures
N Measures
| Page |
Code |
Full name |
Type |
Retention |
| CCS |
CCS |
Catch crops (spring) |
Temp |
TR |
| CCW |
CCW |
Catch crops (winter) |
Temp |
TR |
| EC |
EC |
Energy crops |
Temp |
TR |
| IC |
IC |
Intermediate crops |
Temp |
TR |
| EW |
EW |
Early sowing |
Temp |
TR |
| N10 |
N10 |
N norm reduction 10% |
Temp |
TR |
| N20 |
N20 |
N norm reduction 20% |
Temp |
TR |
| SA |
SA |
Temporary set-aside (Kortvarig brak) |
Temp |
TR |
| FO |
FO |
Forestation (Skovrejsning) |
Perm |
TR |
| LRl |
LRl |
Permanent set-aside, organogenic soils (Permanent udtagning, lavbund) |
Perm |
NR |
| LRh |
LRh |
Permanent set-aside, mineral soils (Permanent udtagning, højbund) |
Perm |
TR |
| BZ10 |
BZ10 |
Buffer zone 10 m |
Perm |
SR |
| BZ20 |
BZ20 |
Buffer zone 20 m |
Perm |
SR |
| WL |
WL |
Constructed wetland |
Perm |
NR |
P Measures
| Page |
Code |
Full name |
| PPC |
PPC |
Permanent plant cover (Permanent plantedække) |
| NPB10 |
NPB10 |
Negative P balance 10 kg/ha (Negativ fosforbalance) |
| NPB20 |
NPB20 |
Negative P balance 20 kg/ha (Negativ fosforbalance) |
| OT |
OT |
Optimized tillage (Optimering af jordbearbejdning) |
| PWET |
PWET |
P wetland |
| IBZ |
IBZ |
Intelligent Buffer Zones |
Combined N+P Measures
| Page |
Description |
| Combined measures |
PPC_NPB10/20, NPB10/20_OT, NPB10/20_BZ10/20 — N and P from a single decision |
Infrastructure Measures
💡 Concepts
| Page |
Description |
| Retention types |
TR, SR, NR — and why they matter for spatial cost-effectiveness |
| P loss pathways |
Erosion, macropore, matrix — the three P transport mechanisms |
| Cost concepts |
Opportunity costs, gross margins, annual running costs |
📋 Policy Context
🗄️ Data
| Page |
Description |
| .inc files overview |
All ~70 data include files — content, source, confirmation status |
| DCA diff effekt 2025 |
Rolighed et al. (2025) — spatially differentiated N effects for 108 catchments; source of differentiation_effects.inc |
📊 Synthesis
🗂️ Projects
| Page |
Status |
Description |
| Projects index |
Active |
Project-specific result ingests and scenario-run archives |
| P Project 2025 |
Ingested |
Retention and differentiation comparison package with 9 result workbooks and comparison figures |
| P Project 2025 — Scenario 1 |
Ingested |
National result digest for N Only, N+P, and P Only under old/new/differentiated retention assumptions |
🧪 Scenarios
🔧 Maintenance
| Page |
Description |
| Activity log |
Append-only record of all ingests, queries, and lint passes |
| Lint report 2026-04-05 |
Open questions, missing frontmatter, data gaps — working checklist |
| Lint report 2026-04-08 |
Health check after project-ingest rollout; structure, nav, and remaining cleanup items |