With ORCA, I don't know but...
You can use the GAMESS software.
From the manual:
The code for the Fragment Molecular Orbital (FMO) method has been a
part of the standard GAMESS package since May 2004. The FMO method is
the successor of the EDA scheme developed by K. Kitaura and K.
Morokuma (known in GAMESS as Morokuma-Kitaura decomposition), however,
the FMO code was written independently. In GAMESS only the full FMO
method is incorporated whereas in the literature one can also find a
simplified approach suited for molecular crystals. Since "FMO" is
also used to mean "Frontier Molecular Orbitals" and the concept of
fragments is also introduced in the EFP method (see above), it is
stressed here that the FMO method bears no relation to either of the
two methods, that is to say, it is independent of the two, but might
be combined with either of them in the future just as EFPs are used in
In the Fragment Molecular Orbital (FMO), your system can be divided in fragments (automatically or manually). As FMO is deeply interconnected with the energy decomposition analysis (EDA) the method will return the energy of each fragment.
Within GAMESS, you can use different level of theory like Hartree–Fock, Density functional theory (DFT), Multi-configurational self-consistent field (MCSCF), time-dependent DFT (TDDFT), configuration interaction (CI), second order Møller–Plesset perturbation theory (MP2), and coupled cluster (CC).
Finally, to prepare the GAMESS input for FMO calculation, the software FACIO, fu-suite and/or FragIt can help.
(2)in the xyz file for an H2O calculation, neither here nor here nor here, nor in any of the CPCM pages such as this one and this one. Can you provide a link to documentation that has the parentheses? $\endgroup$