Secondary heat infrastructure costs not represented in business case

[DorinevanderVlies]

Description

This LES only has technologies attached to node "1 - flat". I just added heat technologies (all district heating) to this node. No investment and O&M costs attached to these technologies.

In the heat assets tab I assigned 1000 euro per connection to all 54 connections. The lifetime is 10 years. So I would expect (1000 euro/10year lifetime *54 units = )5400 euro depreciation costs of stakeholder 1. However, there are no depreciation costs for stakeholder 1.

Screenshots

notifying @AlexanderWirtz

[grdw]

I'll have a look.

[grdw]

If I understand this issue correctly the Customer Ac1 should receive depreciation costs?

[DorinevanderVlies]

Yes, indeed. Or extra outgoing costs, but this doesn't seem to be the case as well. To test this I added some 0's to the investment expecting a change in the business case. However the business case didn't change when the investment of secondary heat infrastructure was changed.

[grdw]

I see what's going on here. Appearantly the number_of_units for secondary Heat Assets is always 0 and I also know why. Am fixing it.

[grdw]

Ok, that was one. But there's another thing going on here. The topology also contains the Customer AC1 but that calculation returns NaN for a reason. Probably because the technical_lifetime is not set? If you could check that out.

[DorinevanderVlies]

I found technical lifetimes and investment costs defined as 0 for the buffer. This could be a problem. It shoudn't really be a problem right?

Are the two LESses below working properly?

LES with technical lifetimes and initial investment and O&M left emtpy

LES with technical lifetime of 30 years even when initial investment and O&M costs are non-defined (empty)

[grdw]

I found technical lifetimes and investment costs defined as 0 for the buffer. This could be a problem. It shoudn't really be a problem right?

No that's not the problem in this case. It's about the nodes in the electricity topology that belong to the stakeholder Customer Ac1 (those attributes here). I think its' (node 1 - flat 5 - flat 9 - flat).

[DorinevanderVlies]

Those are indeed that nodes beloning to stakeholder 1. I have a feeling that this NAN has been an issue before, is it related to #1530?

The attributes like investment cost, technical lifetime etc are indeed empty for most nodes in this LES. My preference would be to have the option to leave them empty when they're not relevant (like in this LES).

[grdw]

[..] before, is it related to #1530?

Well, not really. The values are now correctly null which is fine, but you can't calculate with null. We could set defaults for those values but that's a bit odd. 🤔 However, I also think the correct outcome of the topology_costs for Customer Ac1 should be 0 instead of NaN. I guess that can be easily done by setting the technical_lifetime default to 1 but I need to try that out.

[grdw]

Oops, I was checking out the wrong costs. It are the TechnologyCosts ...

[DorinevanderVlies]

So the heat infrastructure issue is solved, right? :smiley:

[grdw]

Found it! 👍

[grdw]

About secondary heat assets: I made a pull request with the fix for the secondary heat assets.

About technology costs: However, the technologies in question had to be given a technical_lifetime for this to work:

I found out that locally one of them had 0 years which is unfortunately possible to enter as a value but impossible to use for the calculation of the initial costs of the business case. (So this should be validated properly).