Good morning Mr Tone,
You bring up one very valid electrical car usage factor:
Where you are using it greatly skews the travel distance and battery cycle life’s usages.
Cold. Cold Canadians are finding this out. Not so cold by cold wet,wet western British Columbians are finding this out. .
Needed cabin heat 200-300 days of the year. Needed constant windshield de-misting/defrosting takes heat too. 300 days of the year.
Then us cold and wet needing AC system vehicle interior airs drying out. 200 days of the year.
Internal combustion engines (even assist/charging engines - BMW/Mazda) regardless of the fuel source; these heats are “free”.
Electric vehicle this heat energy come at the cost of travel range. And then hard cycling batteries shortening life.
Stationary is a whole different set of circumstances to calculate.
I’ve done this for decade too.
Easy to fool your self.
I simplify.
EVERY change/use step I see picture de-rate energy by 10%. And this is generously assuming 90% efficiencies at each step. Many are only 60-80% efficient.
Count a fellows steps to know his actual use/efficiency.
Stationary you are absolutely correct: any recovered heat can be put to some useable purpose and counts as a positive.
Mobile/vehicle is different.
Now just how really full cycle watts efficient are those National electric transit trains?
Hydro-electric; Nuclear power plant to human bodies transported? 30% transmission heat losses? And those human bodies NOT even to home doorstep transported.
Regards
Steve Unruh