Rapid expansion of flexible electricity use and batteries could be crucial for a secure and affordable energy system, saving energy users between $5.4 and $20.8 billion through to 2050.

The latest Energy Quarterly data release from the Ministry of Business, Innovation & Employment (MBIE) shows renewables generated 94.5% of all electricity in the March 2026 quarter, up from 83.2% in the same quarter last year.