Figure 1

Figure 2

Figure 3

Figure 4

Advantages and disadvantages of business models – the EU investor's perspective
| Model | Advantages | Disadvantages |
|---|---|---|
| Electricity market | Compliance with EU state aid rules | No offtake |
| PPA | Offtake | No compliance with EU state aid rules |
| CfD, CEAC | Stable selling prices | No offtake |
| CfD (Czech version) | Offtake | Model waiting for EC acceptance |
| RAB | Stable selling prices | No compliance with EU state aid rules (probably) |
| PTC | Fixed state subsidy for every megawatt hour (MWh) of electricity generated | No offtake |
| ZEC | Relatively stable selling prices | No offtake |
| CES | A subsidy in market revenue | No offtake |
| CM | Covering of fixed production costs | No offtake (for energy) |
| Carbon tax/ETS | Increasing of costs for coal- and gas-based competitors | No offtake |
| Exeltium | Offtake | Price volatility in the long term, dependent on the wholesale market price index |
| Mankala | Offtake | High risk before and during construction |