@neauoire you're pushing the limits here 🙂
regarding some comments about PV efficiency being about 20%: are we goint to ditch photosynthesis because it's ~1% efficient? efficiency, in this case, means just that we're not using large parts of the spectrum exactly as if we weren't doing anything. it's not like the ~40% eff of an internal combustion engine in which we have 60% heat output and toxic/greenhouse emissions.
so if somebody has a large roof, install as much PV as you can and be 100% self sufficient. it's so cheap today.
of course living on a boat puts you in a special position and I enjoy your experiments! ;-)
I just don't wanna see people saying that PV is bad because it's ONLY 20% efficient.
I'll admit that spending 5K$ for 6kWp is not that sexy, adventurous or "bleeding edge" as your solar cooker though, ahah