Abundant renewable energy, driven by decreases in costs of solar, wind and energy storage could be used with no other inputs but energy* via the Haber process +

Abundant renewable energy, driven by decreases in costs of solar, wind and energy storage could be used with no other inputs but energy* via the Haber process + electrolysis. I suppose I don’t know the chemical compound that constitute “solid soil amendment” though. If it includes functionally free nitrogen/ammonia and proper management of land or equipment, is this still not possible?