https://github.com/waldoj/home-battery

Figuring out how to install a home battery bank for a PV array.
https://github.com/waldoj/home-battery

Last synced: 5 days ago
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Figuring out how to install a home battery bank for a PV array.

• Host: GitHub
• URL: https://github.com/waldoj/home-battery
• Owner: waldoj
• Created: 2019-03-11T00:18:51.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2019-03-11T01:31:34.000Z (almost 6 years ago)
• Last Synced: 2024-11-09T22:47:23.277Z (2 months ago)
• Size: 1.95 KB
• Stars: 2
• Watchers: 2
• Forks: 1
• Open Issues: 10
• Metadata Files:
  • Readme: README.md

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README

        
# Setting Up a Home Battery

Figuring out how to install a home battery bank for a PV array.

## Overview

The idea is to modify a net-metered home-solar setup to add a battery bank, for the purpose of reducing the amount of power that is sold back to the power company (and then re-purchased from them). Batteries will smooth out the mismatch in the spikes between power generation and power use, reducing the total amount transferred to and from the power company. I have some interest in also using the battery bank as a backup power source for the home, but the presence of a whole-house generator makes that less interesting.

The PV array is 14 Sunmodule Plus SW 280 mono panels, with a total capacity of 3.92 kW, with the following specs:

* STC Rating: 280.0 Watts

* PTC Rating: 251.2

* Open Circuit Voltage: 39.5 Volts

* Short Circuit Current:	9.71 Amps

* Power Tolerance	0/+5%

The biggest challenge is dealing with the PV array's use of microinverters. The power that it feeds back is AC, not DC.