[FEATURE]: Correct LCOE calculation

[trevorb1]

Idea

In discussion with @SimoneOseiOwusu, we think it would make sense to discount the energy generation as well when calculating the LCOE value.

Is your feature related to a bug?

No response

Suggested Soltuion

We should be able to reuse the same functions, but just discount the demand data beforehand. The locations where we believe this needs to be calculated are:

• Power cost calculation here
• Cost of electricity generation here

We should be able to repurpose the otoole definition of discount factor here

Additional Info

No response