The answer is no, off grid solar power plant require batteries to store electricity. If the grid power isn't available and batteries are out of equation too.
[pdf] The CESS-HY series is a three-phase energy storage inverter custom-developed for commercial and industrial projects. It offers various power levels of 25/30/36/40/50kW, providing higher power output to ensure stable energy for loads.
[pdf] All power inverters have an automatic shut off function which prevents the attached battery bank from being overly discharged. When the voltage of the batteries falls to a certain fixed level, the inverter simpl. .
The relay pictured in this article is available from Rapid, for around £6, or a wide selection of similar relays are available from a. .
One problem with many power inverters is that the automatic switch off voltage is too low – for example 10.5V or 11V. By the time the battery or battery bank gets down to this sort of level of charge, it is pretty much empty and theref. .
DISCLAIMER – mains electricity can KILL. We recommend that you talk to a qualifiedelectrician before attempting to implement any of the ideas discussed in this article.
[pdf] String inverters convert DC power from “strings” of PV modules to AC and are designed to be modular and scalable. Smaller string inverters may have as few as one input, with one PV string per input.
[pdf] MPPT optimizes the voltage at which panels operate, ensuring that even under less than perfect conditions (cloudy skies, dusk, or dawn), the system performance remains at peak.
[pdf] Maximum power point tracking (MPPT), or sometimes just power point tracking (PPT), is a technique used with variable power sources to maximize energy extraction as conditions vary. The technique is most commonly used with (PV) solar systems but can also be used with , and . The minimum input voltage should be at least 5 volts over your battery voltage OR the minimum specified in the manual. If the voltage is not high enough, the charge controller will not start.
[pdf] 
