Hedges
I See Electromagnetic Fields!
- Joined
- Mar 28, 2020
- Messages
- 21,197
I recommend SMA since that's what I have and am happy with.
Present model Sunny Island falls short of several things on your list. With four, 2s2p, it's 112A pass through. Indoor. Simple pushbutton monitor, but can be monitored remotely. Sunny Boy does do PV direct to load. Switching during grid failure is about 30 ms. Supports FLA/AGM, select lithium batteries (REC is used for DIY). UL listed. 10 year warranty.
When the European 8.0H model comes to the US, that is outdoor rated and has an available 200A transfer switch.
48kW is a rather high load to transfer to batteries and run continuously. Four Sunny Island could surge 44kW, deliver 24kW from battery and let 24kW of Sunny Boy PV carry the rest. But you'll need a very large battery. I think it is more reasonable to have 200A main panel, 100A breaker feeing through the battery inverters to another panel with loads and GT PV. During a grid failure, excessive loads like electric furnace on main panel shut off. You can manually backfeed and decide what to power.
Price? If Sol-Ark is 12kW PV and 9kW of inverter, consider 2x Sunny Island and 2x Sunny Boy, 12 kW PV and 12 kW of battery inverter. Price around $15k, which is higher (2x?) but has considerably more AC capability during the day (up to 24kW). I have this, but with 4x Sunny Island.
Maybe multiple Sol-Ark would hit the performance and price you want.
Present model Sunny Island falls short of several things on your list. With four, 2s2p, it's 112A pass through. Indoor. Simple pushbutton monitor, but can be monitored remotely. Sunny Boy does do PV direct to load. Switching during grid failure is about 30 ms. Supports FLA/AGM, select lithium batteries (REC is used for DIY). UL listed. 10 year warranty.
When the European 8.0H model comes to the US, that is outdoor rated and has an available 200A transfer switch.
48kW is a rather high load to transfer to batteries and run continuously. Four Sunny Island could surge 44kW, deliver 24kW from battery and let 24kW of Sunny Boy PV carry the rest. But you'll need a very large battery. I think it is more reasonable to have 200A main panel, 100A breaker feeing through the battery inverters to another panel with loads and GT PV. During a grid failure, excessive loads like electric furnace on main panel shut off. You can manually backfeed and decide what to power.
Price? If Sol-Ark is 12kW PV and 9kW of inverter, consider 2x Sunny Island and 2x Sunny Boy, 12 kW PV and 12 kW of battery inverter. Price around $15k, which is higher (2x?) but has considerably more AC capability during the day (up to 24kW). I have this, but with 4x Sunny Island.
Maybe multiple Sol-Ark would hit the performance and price you want.