The animal was then tethered, but "due to the distress caused to the animal" a veterinarian was called to the address to sedate it.
However, the animal control officer did not have a safe place to enclose the goat and asked the veterinarian to euthanise it.
On December 2, Pedersen told the Otago Daily Times his decision to use the Taser might have been considered "a bit drastic", but given the circumstances felt it was the best decision for all concerned.
"I considered myself at risk. It needed to be controlled ... it wasn't in the mood to be subdued."
The ministry began its investigation into the incident, which cost more than $25,000, on February 7, 2017.
The documents said investigators "were hampered at some stages of their investigation", partly by Pedersen being "reluctant to be interviewed" and taking "some time" to agree to answering written questions about the incident.
The investigation concluded on July 21.
In August, the file was sent to an in-house lawyer to determine if charges of ill-treatment or reckless ill-treatment should be laid under the act.
As the case "involved an unprecedented and novel set of facts" advice was sought from the Crown Solicitor's office before the case was referred to it on November 24.
Final advice was provided to the ministry last month.
On April 26 it was decided the case would not proceed based on "evidential weaknesses" in the case, as a goat could be considered a "wild animal" under the act, therefore Pedersen's actions did not breach it.