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] Battery Energy Storage Systems, or BESS, are rechargeable batteries that can store energy from different sources and discharge it when needed. BESS consist of one or more batteries and can be used to balance the electric grid, provide backup power and improve grid stability.
[pdf] In Mongolia, the National Power Transmission Grid has secured a loan from the Asian Development Bank (ADB) to install the country’s first large-scale advanced battery energy storage system (BESS).
[pdf] CIMC energy storage power stations largely utilize lithium-ion batteries due to their high efficiency, rapid charging, and longevity. This technology is complemented by advanced energy management systems that utilize real-time data for optimization.
[pdf] Opened in late 2024, this lithium-ion wonder stores surplus wind energy from the Adjara Highlands and solar power from the Kakheti plains. Think of it as a giant power bank for the nation, but instead of charging phones, it’s juicing up entire neighborhoods during blackouts. .
[pdf] The Cairo project uses aqueous hybrid ion (AHI) technology – basically, saltwater batteries that laugh in the face of desert corrosion [1]. Unlike their toxic lead-acid ancestors, these batteries could survive a Nile flood (though we don’t recommend testing that).
[pdf] 
