New solar small-scale technology certificate market data released by SunWiz find nationally, solar STCs eased for a second straight month to 322 MW in June 2026, down month-on-month by 4%, and 26% below April’s all time STC record of 435 MW.
New solar small-scale technology certificate (STC) market data released by SunWiz find nationally, registrations eased for a second straight month to 322 MW in June 2026, down month-on-month (MoM) by 4%, and 26% below April’s all time STC record of 435 MW.
That anomaly is associated with the 1 May drop in demand for batteries as the federal government’s Cheaper Home Batteries Program rebate scheme reduced its offerings.
“The dip is a maturing normalization, not a reversal; June was still the strongest June on record, sits comfortably above the long-run trend, and the January-June tally is the highest ever, running approximately 41% ahead of the same point in 2025,” a SunWiz statement said.
The leading segment representing about 37% (118 MW) of the existing market was the 10-15 kW, which rose 2% MoM, performing best in New South Wales (NSW) and Queensland.
