CONNECT DISTRIBUTED GENERATION
Connect Distributed Generation
DG APPLICATION FORM CHANGES
From the 1st of August 2025, we're required to capture and record additional information regarding Distributed Generation connecting to our network. This information is then recorded in New Zealand's electricity Registry. To ensure we meet these requirements, we've made changes to the DG application forms. If you would like to talk to us about the new form, or would like to discuss the information that is now required, please call us on 03 5777 007 or email connections@mll.co.nz.
Overview
Before you install or upgrade any equipment such as solar panels, battery storage or other generation, a connection application to MLL is required. We’ll need to assess the impact this equipment will have on our network to ensure it does not negatively affect others.
Depending on the existing meter at your property, you may need to pay for a new meter to track your energy use, which you'll need to organise through your retailer.
Due to the technical nature of the information we need, we recommend you have an electrician or electrical consultant complete the application on your behalf.
Information on the regulated process for connecting distributed generation to the Marlborough Lines network is provided in our connection policy linked below. This policy details the application pathways, timeframes, high level requirements and our fees.
If you have any questions about connecting DG please email us at: distributed.generation@mll.co.nz.
Small to Medium Distributed Generation (Homeowners and Small Businesses)
Information on the connection process and compliance for small generators connected to our low-voltage network, 200kW or less.
Learn More ➔
Apply Here ➔
Medium to Large Distributed Generation (Commercial or Industrial Businesses)
Information on the connection process and compliance for generators connected to our low-voltage network, greater than 200kW.
Learn More ➔
Apply Here ➔
Large Distributed Generation (High Voltage Connections)
Information on the connection process and compliance for generators connected to our high voltage network.
Learn More ➔
Apply Here ➔
MLL’s Network Export Congestion Management
Distribution networks have primarily been designed and established for electricity flows in one direction. With an increasing number of distributed generation systems connecting this could introduce bidirectional electricity flow on parts of our network not designed for it.
The standard linked below provides guidelines for how MLL manages congestion on our network as a result of distributed generation and outlines areas currently known to be, or reasonably expected to become, subject to export congestion within the next 12 months.
