Stewart Island Electrical Supply Authority (SIESA)
Who are we and what do we do?
The Stewart Island Electrical Supply Authority (SIESA) is responsible for the generation and supply of electricity to consumers on Stewart Island Rakiura.
SIESA is owned and operated by the Southland District Council on behalf of Stewart Island Rakiura electricity consumers and is governed by the Stewart Island Rakiura Community Board.
SIESA's network is powered by five diesel generators at a central power station and the power is delivered by 30km of overhead lines, 10km of underground cables and 35 distribution transformers.
Report electricity faults 24/7 on 0800 808 587
For non-urgent queries, visit us at the Southland District Council office, 10 Ayr Street, Oban, Stewart Island/Rakiura or 15 Forth Street, Invercargill or phone 0800 732 732.
You can email us at firstname.lastname@example.org
Feedback and complaints
If you have a complaint about SIESA we encourage you to contact us through any of the means above. There is no charge to lodge a complaint with SIESA and your feedback is important to us.
If you have raised a complaint with SIESA and;
- you are not satisfied with how we propose to deal with your complaint,
- we have not resolved your complaint within 20 working days of receiving your complaint and we haven't explained why we need additional time,
- we have not resolved your complaint within 40 working days of receiving your complaint
You can contact Utilities Disputes on 0800 22 33 40 or go to Utility Disputes.
Utilities Disputes is a free and independent service for resolving complaints about utilities providers.