diy solar

diy solar

MajicDiver

Location
Southeast Tennessee
Background
Utility Turbine Controls Engineer (Degree BSME, Computer Science Minor)- semi-retired.
Current or Future Solar Power System
Inverter #1: Growatt MIN-11400-TL-XH-US (Version 2) with18.5kW PV installed on 4 strings. Batteries attached to Inverter #1: TWO 19.8 kWh ARO batteries in parallel. Total of 36kW-Hr of useable battery capacity attached to Inverter #1.

Inverter #2: Growatt MIN-11400-TL-XH-US (Version 2) currently with 14.1 kW of PV installed on 3 strings. Batteries attached to Inverter #2: TWO 19.8 kWh ARO batteries in parallel. Total of 36kW-Hr of useable battery capacity attached to Inverter #2.

Off-Grid output of each inverter is switchable (Breakers) to a 11 kW auto-transformer.

The system is wired such that the grid tie output of either inverter can be AC coupled to the off grid output of the other with the proper breaker/disconnect positions.

Typical operation: Inverter #1 in off-grid operation feeding the main panel thru the auto-transformer (Utility 200 amp feed breaker open) with Inverter #2 in grid tie mode AC coupled to it.

Inverter #2 grid tie output is feeding a sub panel which has a 100 amp feed from the main panel, the power meter for inverter #2 is between the 100 amp subpanel and the 200 amp main panel, typically set for zero export outside of daylight hours. The purpose of the power meter is to prevent charging Inverter #1 batteries from the Inverter #2 batteries.

Home is approximately 3,700 ft^2 of finished space with four 1-ton mini-splits for heating/cooling. There is two HVAC units (a 4 ton and a 3 ton) that are no longer needed since the mini-split installs.

Signature

My System is described in "About" section of my profile

Following

Followers

Trophies

  1. 20

    Can't get enough of your stuff

    Your content has been positively reacted to 250 times.
  2. 15

    Seriously likeable!

    Content you have posted has attracted a positive reaction score of 100.
  3. 10

    Can't stop!

    You've posted 100 messages. I hope this took you more than a day!
  4. 10

    I like it a lot

    Your messages have been positively reacted to 25 times.
  5. 5

    Keeps coming back

    30 messages posted. You must like it here!
  6. 2

    Somebody likes you

    Somebody out there reacted positively to one of your messages. Keep posting like that for more!
  7. 1

    First message

    Post a message somewhere on the site to receive this.
Back
Top