Model Overview

Currently, H2I recognizes four types of models:

• Resource

• Converter

• Transport

• Storage

• Controllers

Resource

Resource models process resource data that is usually passed to a technology model.

Resource name	Resource Type
river_resource	river resource
wind_toolkit_v2_api	wind resource
openmeteo_wind_api	wind resource
goes_aggregated_solar_v4_api	solar resource
goes_conus_solar_v4_api	solar resource
goes_fulldisc_solar_v4_api	solar resource
goes_tmy_solar_v4_api	solar resource
meteosat_solar_v4_api	solar resource
meteosat_tmy_solar_v4_api	solar resource
himawari7_solar_v3_api	solar resource
himawari8_solar_v3_api	solar resource
himawari_tmy_solar_v3_api	solar resource

Converters

Converter models are technologies that:

• converts energy available in the 'Primary Input' to another form of energy ('Primary Commodity') OR

• consumes the 'Primary Input' (and perhaps secondary inputs or feedstocks), which is converted to the 'Primary Commodity' through some process

The inputs, outputs, and corresponding technology that are currently available in H2I are listed below:

Technology name	Primary Commodity	Primary Input(s)
wind	electricity	wind resource
solar	electricity	solar resource
river	electricity	river resource
hopp	electricity	N/A
electrolyzer	hydrogen	electricity
geoh2	hydrogen	rock type
steel	steel	hydrogen
ammonia	ammonia	nitrogen, hydrogen
doc	co2	electricity
oae	co2	electricity
methanol	methanol	???
air_separator	nitrogen	electricity
desal	water	electricity
natural_gas	electricity	natural gas

Note

When the Primary Commodity is electricity, those converters are considered electricity producing technologies and their electricity production is summed for financial calculations.

Transport

Transport models are used to either:

• connect the 'Transport Commodity' from a technology that produces the 'Transport Commodity' to a technology that consumes or stores the 'Transport Commodity' OR

• combine multiple input streams of the 'Transport Commodity' into a single stream

• split a single input stream of the 'Transport Commodity' into multiple output streams

Technology	Transport Commodity
cable	electricity
pipe	most mass-based commodities
combiner	Any
splitter	Any

Connection: [source_tech, dest_tech, transport_commodity, transport_technology]

Storage

Storage technologies input and output the 'Storage Commodity' at different times. These technologies can be filled or charged, then unfilled or discharged at some later time. These models are usually constrained by two key model parameters: storage capacity and charge/discharge rate.

Technology	Storage Commodity
h2_storage	hydrogen
battery	electricity
generic_storage	Any

Control

Control models are used to control the Storage models and resource flows.

Controller	Control Method
pass_through_controller	open-loop control. directly passes the input resource flow to the output without any modifications
demand_open_loop_storage_controller	open-loop control. manages resource flow based on demand and storage constraints
demand_open_loop_converter_controller	open-loop control. manages resource flow based on demand constraints
flexible_demand_open_loop_converter_controller	open-loop control. manages resource flow based on demand and flexibility constraints
heuristic_load_following_controller	open-loop control that works on a time window basis to set dispatch commands. Uses pyomo

Technology Models Overview

Below summarizes the available performance, cost, and financial models for each model type. The list of supported models is also available in supported_models.py

• Resource

• Converters

• Transport

• Storage

• Basic Operations

• Control

Resource models

• river:

  • resource models:

    • river_resource

• wind_resource:

  • resource models:

    • wind_toolkit_v2_api

    • openmeteo_wind_api

• solar_resource:

  • resource models:

    • goes_aggregated_solar_v4_api

    • goes_conus_solar_v4_api

    • goes_fulldisc_solar_v4_api

    • goes_tmy_solar_v4_api

    • meteosat_solar_v4_api

    • meteosat_tmy_solar_v4_api

    • himawari7_solar_v3_api

    • himawari8_solar_v3_api

    • himawari_tmy_solar_v3_api

Converter models

• wind: wind turbine

  • performance models:

    • 'pysam_wind_plant_performance'

  • cost models:

    • 'atb_wind_cost'

• solar: solar-PV panels

  • performance models:

    • 'pysam_solar_plant_performance'

  • cost models:

    • 'atb_utility_pv_cost'

    • 'atb_comm_res_pv_cost'

• river: hydropower

  • performance models:

    • 'run_of_river_hydro_performance'

  • cost models:

    • 'run_of_river_hydro_cost'

• hopp: hybrid plant

  • combined performance and cost model:

    • 'hopp'

• electrolyzer: hydrogen electrolysis

  • combined performance and cost:

    • 'wombat'

  • performance models:

    • 'eco_pem_electrolyzer_performance'

  • cost models:

    • 'singlitico_electrolyzer_cost'

    • 'basic_electrolyzer_cost'

• geoh2_well_subsurface: geologic hydrogen well subsurface

  • performance models:

    • 'simple_natural_geoh2_performance'

    • 'templeton_serpentinization_geoh2_performance'

  • cost models:

    • 'mathur_modified_geoh2_cost'

• steel: steel production

  • performance models:

    • 'steel_performance'

  • combined cost and financial models:

    • 'steel_cost'

• ammonia: ammonia synthesis

  • performance models:

    • 'simple_ammonia_performance'

    • 'synloop_ammonia_performance'

  • cost models:

    • 'simple_ammonia_cost'

    • 'synloop_ammonia_cost'

• doc: direct ocean capture

  • performance models:

    • 'direct_ocean_capture_performance'

  • cost models:

    • 'direct_ocean_capture_cost'

• oae: ocean alkalinity enhancement

  • performance models:

    • 'ocean_alkalinity_enhancement_performance'

  • cost models:

    • 'ocean_alkalinity_enhancement_cost'

  • financial models:

    • 'ocean_alkalinity_enhancement_cost_financial'

• methanol: methanol synthesis

  • performance models:

    • 'smr_methanol_plant_performance'

  • cost models:

    • 'smr_methanol_plant_cost'

  • financial models:

    • 'methanol_plant_financial'

• air_separator: nitrogen separation from air

  • performance models:

    • 'simple_ASU_performance'

  • cost models:

    • 'simple_ASU_cost'

• desal: water desalination

  • performance models:

    • 'reverse_osmosis_desalination_performance'

  • cost models:

    • 'reverse_osmosis_desalination_cost'

• natural_gas: natural gas combined cycle and combustion turbine

  • performance models:

    • 'natural_gas_performance'

  • cost_models:

    • 'natural_gas_cost'

• grid: electricity grid connection

  • performance models:

    • 'grid_performance'

  • cost models:

    • 'grid_cost'

Transport Models

• cable

  • performance models:

    • 'cable': specific to electricity commodity

• pipe:

  • performance models:

    • 'pipe': currently compatible with the commodities "hydrogen", "co2", "methanol", "ammonia", "nitrogen", "natural_gas"

• combiner:

  • performance models:

    • 'combiner_performance': can be used for any commodity

• splitter:

  • performance models:

    • 'splitter_performance': can be used for any commodity

Storage Models

• h2_storage: hydrogen storage

  • performance models:

    • 'hydrogen_tank_performance'

  • cost models:

    • 'hydrogen_tank_cost'

    • 'lined_rock_cavern_h2_storage_cost'

    • 'salt_cavern_h2_storage_cost'

    • 'mch_tol_h2_storage_cost'

    • 'buried_pipe_h2_storage_cost'

• generic_storage: any resource storage

  • performance models:

    • 'simple_generic_storage'

    • 'storage_auto_sizing'

  • cost models:

    • 'generic_storage_cost'

• battery: battery storage

  • performance models:

    • 'pysam_battery'

  • cost models:

    • 'atb_battery_cost'

Basic Operations

• production_summer: sums the production profile of any commodity

• consumption_summer: sums the consumption profile of any feedstock

Control Models

• 'pass_through_controller'

• Storage Controllers:

  • 'demand_open_loop_storage_controller'

  • 'heuristic_load_following_controller'

• Converter Controllers:

  • 'demand_open_loop_converter_controller

  • 'flexible_demand_open_loop_converter_controller'