Model 5818 - 6,000 Watt EcoGen? Series Off-Grid Standby Generator Generac?s new 6 kW EcoGen Series standby generator is the first generator of its kind built specifically for off-grid applications and fully warranted for off-grid use. Engineered to easily integrate into the existing inverter and battery storage system, EcoGen charges and optimizes the battery bank to ensure constant power regardless of the availability of natural resources. FEATURES: ? Nexus? Digital Controller features LCD display with status indicators, monitors generator performance. ? 120V or 240V capable accommodates larger 240V inverter systems or two systems paired together. ? Extended run capability features an exclusive premium oil recovery and circulation systems that virtually halts oil degradation. ? Maintenance intervals of 500 hours between oil changes. ? Two-wire start easily connects to inverter control wires enabling automatic start when system battery levels become low. ? Ultra-quiet, low RPMs with only 52 dB(A) fully loaded. Engine drives at 2600 rpm resulting in longer life and drastically quieter operation.