Features/Keywords.md

@@ -2,6 +2,7 @@
 title: Keywords
 ---
 
+
 # 🔎 Keyword Index for Features
 
 This index helps you find Backbone features by keyword.
@@ -14,50 +15,61 @@ If you’re looking for a specific *energy modeling concept* (e.g. *uncertainty*
 - **Annuity factor** → [Investment Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Investment-Modelling#moneybag-how-investment-costs-are-calculated)
 - **Arbitrage** → [Storage Node](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Storage-Node#-storage-value)
 - **Ancillary services** → [Reserves](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Reserve-Modeling)
+- **Availability** → [Startup and Runtime Constraints](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Startup-and-Runtime-Constraints#%EF%B8%8F-availability--maintenance-breaks)
 
 ## B
 - **Base load** → [Groups](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Groups#-example--radioactive-must-run-baseload)
 - **Battery Energy Storage** → [Storage Node](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Storage-Node)
 - **Boundary conditions** → [Storage Node](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Storage-Node#-setting-storage-boundaries), [Thermal Node](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Thermal-Node#-temperature-limits), [Boundary Conditions](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Boundary-Conditions), [Hydropower Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Hydropower-Modeling#ocean-spilling-and-bypass-units)
 - **Boiler** → [Basic Production Unit](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/electricity-producing-unit)
-- **Bottleneck (N-1, reserves)** → [Reserves](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Reserve-Modeling#4-security-policies-unit-n-1-and-transfer-n-1)
+- **Bottleneck** → [Reserves](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Reserve-Modeling#4-security-policies-unit-n-1-and-transfer-n-1)
 - **Bypass Unit** [Hydropower Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Hydropower-Modeling#ocean-spilling-and-bypass-units)
 
 ## C
+- **Capacity Factor** → [Flow Units](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Flow-Units#%EF%B8%8F-step-3-define-unit-parameters)
 - **Capacity expansion** → [Investment Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Investment-Modelling#factory-how-to-enable-investment-in-units) 
 - **Carbon tax / CO₂ price** → [Emissions Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Featrues/Emissions-Modeling#-minimal-setup-three-pieces)
 - **CCS** → [Emissions Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Featrues/Emissions-Modeling#repeat-advanced-capturing-and-reusing-emissions)
 - **CHP (combined heat & power)** → [CHP Unit](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/CHP-modeling)
+- **Cold start** → [Startup and Runtime Constraints](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Startup-and-Runtime-Constraints#%EF%B8%8F-operational-timing-p_unit)
 - **COP** → [Conversion Units](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Conversion-Unit#-example-heat-pump)
 - **Continuity (storage states)** → [Storage Node](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Storage-Node#-continuity-across-samples)
 - **CMD file execution (automation)** → [Investment and Schedule Simulation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Investment-and-Schedule-Simulation#hammer-full-cmd-example-p2x-demo), [P2X demo](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Getting-started/Example%20models#p2x-demo-model)
+- **Custom constraints** → [User Constraints](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/User-Constraints)
 
 ## D
 - **Delay** → [Hydropower Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Hydropower-Modeling#stopwatch-output-delays)
 - **Demand** → [Demand Node](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Demand-Node)
+- **Demand-based generation** → [User Constraints – Example workbooks & topics](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/User-Constraints#-example-workbooks--topics) 
+- **Deterministic [Schedule Simulation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Schedule-Simulation#a-full-year-solve)
 - **Diffusion / losses** → [Thermal Node - Losses](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Thermal-Node#-heat-losses), [Energy Transfers - Diffusion](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Energy-Transfer#example-2-passive-energy-diffusion-with-state-losses)
 - **Dispatch (unit commitment)** → [Schedule Simulation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Schedule-Simulation)
+- **District Heating** [Basic Production Unit](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/basic-production-unit), [Demand Node](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Demand-Node), [Energy Transfer](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Energy-Transfer)
 - **Dummies (penalties, slack)** → [Dummy Variables](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Dummy-Variables)
-- **Dynamic Efficiency** → [Unit Efficiency Approximation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Unit-Efficiency-Approximations#%EF%B8%8F-dynamic-behavior-with-directonlp)
 
 ## E
 - **Emission cap** → [Emissions Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Featrues/Emissions-Modeling#factory-example-emission-cap)
+- **Emission capture** → [Emissions Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Featrues/Emissions-Modeling#repeat-advanced-capturing-and-reusing-emissions)
 - **Emission trading / ETS** → [Emissions Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Featrues/Emissions-Modeling#page_facing_up-example-3--emission-price-ts_emissionprice)
 - **Energy markets (electricity, heat, gas, reserves)** → [Price Node](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Price-Node#-how-price-nodes-work)
 - **Energy Share Limits** → [Groups](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Groups#4-energy--share-limits)
 - **Energy transfers** → [Energy Transfers](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Energy-Transfer)
 - **Electrolyzer (Hydrogen production)** → [Conversion Units](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Conversion-Unit), [P2X demo](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Getting-started/Example%20models#p2x-demo-model)
-- **E-fuels** → [Conversion Units](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Conversion-Unit)
+- **Efficiency**
 - **Expansion Planning** → [Investment Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Investment-Modelling)
+- **E-fuels** → [Conversion Units](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Conversion-Unit)
 
 ## F
-- **Fixed Efficiency** → [Basic Production Units](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/basic-production-unit#triangular_ruler-efficiency)
 - **Forecasts** → [Forecast Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Forecast-Modeling)
+- **Frequency** → [Reserves](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Reserve-Modeling#5-rocof-dynamic-inertia-and-static-inertia)
 - **Fuel price (price node)** → [Price Node](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Price-Node#%EF%B8%8F-price-definition)
+- **Fuel usage limit** → [User Constraints – Example workbooks & topics](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/User-Constraints#-example-workbooks--topics)   
 - **Fuel cell** → [Conversion Units](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Conversion-Unit)
 
 ## G
 - **Gate closure** → [Reserves](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Reserve-Modeling#2-group-level-requirements--timing)
+- **Generation limit** → see [User Constraints – Example workbooks & topics](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/User-Constraints#-example-workbooks--topics)  
+- **Green certificate requirement** → [User Constraints – Example workbooks & topics](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/User-Constraints#-example-workbooks--topics)   
 - **Groups** → [Groups](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Groups)
 - **Geological storage (CO₂, gas)** → [Emissions Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Featrues/Emissions-Modeling#package-storage-constraints-for-co%E2%82%82)
 
@@ -65,6 +77,7 @@ If you’re looking for a specific *energy modeling concept* (e.g. *uncertainty*
 - **Heat storage / buffers** → [Thermal Node](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Thermal-Node), [Storage Node](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Storage-Node)
 - **Hydropower** → [Hydropower Unit](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Hydropower-Unit)
 - **Heat pump (HP, district heating)** → [Conversion Units](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Conversion-Unit#-example-heat-pump)
+- **Hot start** → [Startup and Runtime Constraints](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Startup-and-Runtime-Constraints#%EF%B8%8F-operational-timing-p_unit)
 - **Hydrogen storage / tanks** → [Storage Node](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Storage-Node)
 
 ## I
@@ -74,13 +87,25 @@ If you’re looking for a specific *energy modeling concept* (e.g. *uncertainty*
 - **Investment run modes** → [Investment Simulation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Investment-Simulation), [Investment + Schedule Simulation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Investment-and-Schedule-Simulation)
 - **Import/export (cross-border trade, interconnectors)** → [Energy Trasnfer](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Energy-Transfer)
 
+## L
+- **LCA emissions** [Emissions Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Featrues/Emissions-Modeling#two-unit-based-emissions-p_gnuemission)
+
 ## M
-- **Maintenance (planned outages, availability)** → [Startup, Shutdown & Runtime Constraints](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Startup-and-Runtime-Constraints)
+- **Maintenance** → [Startup and Runtime Constraints](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Startup-and-Runtime-Constraints)
+- **Max units online** → [User Constraints – Example workbooks & topics](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/User-Constraints#-example-workbooks--topics)  
 - **Methanation** → [Emissions Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Featrues/Emissions-Modeling#factory-emethanation-co%E2%82%82--synthetic-methane)
+- **Minimum load** → [Startup and Runtime Constraints](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Startup-and-Runtime-Constraints#-startup-and-shutdown-trajectories), [Unit Efficiency Approximations](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Unit-Efficiency-Approximations#%EF%B8%8F-dynamic-behavior-with-directonlp)
+- **Minimum operation hours** → [Startup and Runtime Constraints](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Startup-and-Runtime-Constraints#%EF%B8%8F-operational-timing-p_unit)
+- **Minimum shutdown hours** → [Startup and Runtime Constraints](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Startup-and-Runtime-Constraints#%EF%B8%8F-operational-timing-p_unit)  
 - **Multi-Output Unit** → [CHP modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/CHP-modeling)
+- **Multi-Fuel Startup** [Startup and Runtime Constraints](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Startup-and-Runtime-Constraints#-multi-fuel-startup-behavior-p_ustartupfuel)
 - **Must-run unit** → [Groups](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Groups)
 
+## N
+- **N-1** → [Reserves](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Reserve-Modeling#4-security-policies-unit-n-1-and-transfer-n-1)
+
 ## O
+- **Online Status** [Unit Efficiency Approximations](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Unit-Efficiency-Approximations#%EF%B8%8F-dynamic-behavior-with-directonlp)
 - **Operational planning** → [Schedule Simulation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Schedule-Simulation)
 - **Operational zone** → [CHP Unit](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/CHP-modeling)
 - **Optimization modes (schedule vs. investment)** → [Schedule Simulation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Schedule-Simulation), [Investment Simulation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Investment-Simulation), [Investment + Schedule Simulation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Investment-and-Schedule-Simulation)
@@ -111,22 +136,28 @@ If you’re looking for a specific *energy modeling concept* (e.g. *uncertainty*
 - **Samples (representative weeks, weighting)** → [Investment Simulation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Investment-Simulation), [Forecast Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Forecast-Modeling)
 - **Scenario analysis** → [Investment Simulation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Investment-Simulation), [Forecast Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Forecast-Modeling)
 - **Scheduling** → [Schedule Simulation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Schedule-Simulation)
-- **Sector coupling / P2X (electrolyzers, methanation, e-fuels)** → [Emissions Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Featrues/Emissions-Modeling)
+- **Sector coupling** → [Conversion Units](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Conversion-Unit#-example-electrolyzer), [Emissions Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Featrues/Emissions-Modeling)
 - **Self-discharge** → [Storage Node](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Storage-Node#%EF%B8%8F-basic-configuration)
 - **SMR (Small Modular Reactor)** → [Basic Production Unit](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/electricity-producing-unit), [District Heating Demo](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Getting-started/Example%20models#district-heating-demo-model)
+- **SOS2** → [Efficiency Approximation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Unit-Efficiency-Approximations#chart_with_upwards_trend-piecewise-approximation-with-lambdaxx)  
 - **Spillage** → [Hydropower Unit](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Hydropower-Modeling#ocean-spilling-and-bypass-units)
+- **Startup amount restriction** → [User Constraints – Example workbooks & topics](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/User-Constraints#-example-workbooks--topics)
 - **Startup & shutdown** → [Startup & Runtime Constraints](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Startup-and-Runtime-Constraints)
 - **State Of Charge (SoC)** → [Storage Node](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Storage-Node#-setting-storage-boundaries)
 - **Storage nodes / units** → [Storage Node](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Storage-Node), [Storage Unit](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Storage-Units)
+- **Storage state constraint** → [User Constraints – Example workbooks & topics](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/User-Constraints#-example-workbooks--topics)  
 - **Stochasticity** → [Forecast Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Forecast-Modeling)
 - **Subsidies** → [Emissions Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Featrues/Emissions-Modeling#money_with_wings-negative-costs-for-methane-production)
 
 ## T
+- **Temporal resolution** [Schedule Simulation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Schedule-Simulation#c-rolling-horizon-with-diminishing-temporal-resolution)
 - **Thermal demand & storage** → [Thermal Node](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Thermal-Node)
+- **Thermal Inertia** → [Startup & Runtime Constraints](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Startup-and-Runtime-Constraints#%EF%B8%8F-operational-timing-p_unit)
 - **Thermal Unit** → [Basic Production Units](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/basic-production-unit)
 - **Time series** → [Dictionary - Time Series](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Dictionary#time-series-input-sheets)
-- **Time series circulation** → [Forecast Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Forecast-Modeling#arrows_clockwise-how-time-series-circulation-supports-forecast-improvement), [Time Series Circulation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Time-Series-Circulation)
-- **Transmission Line** → [Energy Transfer](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Energy-Transfer)
+- **Time series circulation** → [Forecast Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Forecast-Modeling#arrows_clockwise-how-time-series-circulation-supports-forecast-improvement), [Time Series Circulation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Time-Series-)
+- **Time step interval** → see [Schedule Simulation](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Schedule-Simulation#32-time-step-intervals)
+- **Transmission line** → [Energy Transfer](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Energy-Transfer)
 - **Transfer link investment** → [Investment Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Investment-Modelling), [Energy Transfers](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Energy-Transfer)
 - **Turbine bypass** → [Hydropower modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Hydropower-Modeling#ocean-spilling-and-bypass-units)
 - **Targeted carbon pricing** → [Emissions Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Featrues/Emissions-Modeling#one-node-based-emissions--p_nemission)
@@ -134,9 +165,11 @@ If you’re looking for a specific *energy modeling concept* (e.g. *uncertainty*
 ## U
 - **Uncertainty** → [Forecast Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Forecast-Modeling)
 - **Units (turbines, storage, CHP, flow, hydro)** → [Basic Production Unit](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/electricity-producing-unit), [Storage Unit](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Storage-Units), [Conversion Unit](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Conversion-Unit), [Flow Units](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Flow-Units), [Hydropower Unit](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Hydropower-Unit), [CHP Unit](https://gitlab.vtt.fi/backbone/backbone/-/)
+- **Unit-Based Emissions** [Emissions Modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Featrues/Emissions-Modeling#two-unit-based-emissions-p_gnuemission)
 
 ## W
 
+- **Warm start** → [Startup and Runtime Constraints](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Startup-and-Runtime-Constraints#%EF%B8%8F-operational-timing-p_unit)
 - **Water Routing** → [Hydropower modeling](https://gitlab.vtt.fi/backbone/backbone/-/wikis/Features/Hydropower-Modeling#droplet-water-and-power-routing)