Create a file config/system.ini with the desired configuration. It needs to have the following values:

localip=[the local ip address of the enphase box]
httpport=[the port this program will use to serve http]

Either provide username, password, site and serial number for automatic token generation, or provide token:

username=[username for enphase - used for generating token]
password=[password for enphase - used for generating token]
site=[customer's name - used for generating token]
serialnum=[from enphase web site - used for generating token]

Bypass token generation by providing token directly

token=[the token generated from Enphase web site]

Optional for uploading the data to InfluxDB

influx_token=
influx_orgid=
influx_bucket=
influx_url=

Install dependencies using Go, and start with go run main.go and navigate to http://localhost:[httpport]/ with a local browser.