A grid-tied solar kit built to cut your electric bill. The FlexBOSS21 and GridBOSS MID run household loads such as AC, water heaters, well pumps and refrigerators directly from twelve 450W panels during the day. Any surplus can be exported for net metering or sell-back where your utility offers it. Add batteries later to turn it into a full backup system.

Highlights

  • Turn excess solar into savings through net metering or sell-back programs
  • Power more of your home, including HVAC, pool equipment and EV chargers
  • Expandable: add more solar or storage as needs or rates change
  • Monitor savings in real time from anywhere
  • Solar first: intelligent energy management reduces purchased power

What's included

  • 1× EG4 FlexBOSS21 hybrid inverter
  • 1× EG4 GridBOSS MID v3.1
  • 12× Peimar 450W mono PERC solar panels (5.4kW array)
  • 1× 100 ft 10 AWG PV wire
  • 1× BSB 90A circuit breaker

Key specs

FlexBOSS21 max AC output 16kW (PV + grid) / 12kW (battery only)
FlexBOSS21 max PV input 21kW
FlexBOSS21 max continuous output current 66.7A
GridBOSS service rating 200A, NEMA 3R
GridBOSS inputs 3 inverter slots + generator port
GridBOSS smart ports 125A / 80A / 60A / 60A
Panel efficiency 20.82% (mono PERC)
Panel Voc / Isc 41.18V / 13.85A

Warranty & shipping

  • FlexBOSS21: 10-year warranty; GridBOSS: 10-year warranty; Peimar panels: 25-year product warranty
  • Ships by freight

Racking and batteries are not included. Utility interconnection requires permitting and a licensed installer.

ManufacturerEG4 Electronics (bundle)
Bundle SKUKIT-E0021
PV Array5.4kW (12 x 450W)
Rackingnot included
Includes1x EG4 FlexBOSS21 Hybrid Inverter (16kW (66.7A); 12kW (50A); 21kW (STC))
Includes1x EG4 GridBOSS MID v3.1 (Microgrid Interconnect Device (MID); 200A service entrance (350A bus, software limited to 200A); 3 x 90A (12kPV, 18kPV, FlexBOSS18, FlexBOSS21))
Includes12x Peimar 450W Mono PERC panel
Includes1x 100 ft 10 AWG PV wire
Includes1x BSB 90A AC Circuit Breaker

Specifications are from the manufacturer and may change. Questions? Call (888) 831-0450.

EG4 Limited Warranty (per component): FlexBOSS21 10-year limited; GridBOSS 10-year limited

FlexBOSS2110-year limited
GridBOSS10-year limited
How to claimcontact original place of purchase (Sky Solar USA) / EG4

Download: EG4 FlexBOSS21 Warranty Document

Download: EG4 GridBOSS Warranty Document

Manufacturer warranties are provided by the manufacturer. Keep your invoice as proof of purchase. Questions about a warranty claim? Call (888) 831-0450.

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