* High discount rates
* Missing technologies (eg, other CDR options, behavioural change, disruptive technologies, etc)
* Missing processes (eg, grid modelling of variable renewables)
1/
* Bioenergy feedstock prices
* Availability of residues
* Lack of governance
See the paper by Alex Köberle
link.springer.com/article/10.100…
2/
* End of century constraints leads to peak & decline scenarios, hence more demand for BECCS
* Different types of models & solution methods might preference BECCS
3/