Expand TCT functionality to work with Sector Studies

[trevorb1]

Feature Request

The TCT constraint hard codes in to filter over Generators and StroageUnits. This is good for electricity studies, but not good for sector studies which rely heavily on Links/Stores. For example, all natural gas generators are converted to links, making TCT not possible for this.

It would be good to extend TCT functionality to work with sector studies (as this is quite a valuable policy dimension)

Suggested Solution

I see three options:

Option 1

Manually add in filters for the missing components. ie. add the following filters to the add_technology_capacity_target_constraints(...) function for Links, Stores, ect.. :

filtered = filter_components(
    n=n,
    component_type="xxx",
    planning_horizon=planning_horizon,
    carrier_list=carrier_list,
    region_buses=region_buses.index,
    extendable=True,
)

Advantage

• Easiest to add
• No need to change existing TCT config

Disadvantage

• Messiest to read
• May run into issues if multiple components use same carrier

Option 2

Iterate over all components. I can't quite remember the syntax, but something like this

for c in n.iterate_components():
    filtered = filter_components(
        n=n,
        component_type=c.name,
        planning_horizon=planning_horizon,
        carrier_list=carrier_list,
        region_buses=region_buses.index,
        extendable=True,
    )
    ...

Advantage

• Easy to add and quite clear
• No need to change existing TCT config

Disadvantage

• May run into issues if multiple components use same carrier
• Can lead to double definitions, as users can now specify (for example) line expansion limits here

Option 3

Update TCT configuration to specify component. For example, something like,

name,planning_horizon,region,carrier,component,min,max
solar_limit,all,CA,solar,Generator,,32420
wind_limit,all,CA,"onwind, offwind_floating",Generator,,9620
reeds_storage_mandate,2030,CA,StorageUnit,4hr_battery_storage,2325,

And directly read in the component to filter in add_technology_capacity_target_constraints()

Advantage

• Most explicit

Disadvantage

• Need to change TCT config
• Might not be clear for new users
• Need to check for proper spelling ect.

Additional Info

@ktehranchi, do you have any thoughts. My preference is option 3