Solar-Powered Cryonics Storage Facility
Use solar panels to keeping cryonically preserved items in solar-powered liquid nitrogen tanks, that could last hundreds of years.
Atmosphere of Earth is full of nitrogen, and the liquid nitrogen production requires merely the energy. The max boil-off rate I've seen is 74.2 liters per day. （HSSV−R14，CRYOSTAT BOIL-OFF DATA (2008)), and the energy required to produce 1 liter of nitrogen, is approx. ??? kWh. Tesla power stations produce ??? kWh per day.