Cost and subclasses need to be defined

[akleinau]

Description of the issue

Cost is a subclass of Variable and has the subclasses FixedOperationCost, FuelPrice, InverstmentCost and VariableOperationCost.

Is it really just a variable? They all need definitions.

Ideas of solution

First ideas for definitions were:

• Cost: A Cost is a Variable stating the required payment for something.
• FuelPrice: A FuelPrice is a Cost that is the price of Fuel.
• InvestmentCost: InvestmentCost is a Cost thats the sum of all costs calculated for an investment.
• VariableOperationCost: VariableOperationCost is a Cost that varies depending on the executed operations.
• FixedOperationCost: A FixedOperationCost is a Cost independent of the executed operations.

Workflow checklist

• I discussed the issue with someone else than me before working on a solution
• I already read the latest version of the workflow for this repository
• I added this issue to the Project 'Issues'. If suitable, I add it to further Projects.
• The goal of this ontology is clear to me

I am aware that

• every entry in the ontology should have an annotation
• classes should arise from concepts rather than from words
• class or property names should follow the UpperCamelCase

[stap-m]

related to #256 about including another ontology for energy markets

[akleinau]

delete to leave out in first release

[han-f]

May cost be something reflected on oeo-social instead? Cost is an economic term and there are several different types of costs, see for example here: https://en.wikipedia.org/wiki/Economic_cost

[han-f]

Related to OpenEnergyPlatform/oeo-extended#5

[han-f]

How about starting with cost and once we got a proper definition of it, move to the others?
How about this as a starting point (always having in mind to be generic): Cost is the amount of money needed to buy, do, or make a thing.
https://dictionary.cambridge.org/dictionary/english/cost

Money: see #335

[han-f]

A thought on price (#331) vs. cost: A seller attaches a price to a commodity that he/she wishes to sell.
The cost the buyer incurs is the price he/she actually pays to acquire the commodity (this may include taxes for example).
The cost the seller incurred are, for example, money he/she spent on labour and material needed to create the commodity. These costs are reflected in the price he/she attaches to the commodity for sale.

[sfluegel05]

In dev-meeting 8.3, we agreed with @han-f 's definition of cost (with a little addition): Cost is a quantity value that describes the amount of money needed to buy, make, or do a thing.

[l-emele]

So can we implement cost now?

[sfluegel05]

Yes, I think so. Only a small change due to recent developments: Cost is an economic value that describes the amount of money needed to buy, make, or do a thing.

[akleinau]

This is one of the economic terms so we should write the decided def and superclass in the excel table. The implementation will happen when all terms there are decided automatically out of this excel table