For TS issue with ICPT, actually no need to have battery system, just need to reduce the total import energy to below 1500kwh

TS need to monitor day time average daily energy consumption, for example

9am - 5pm uses 15kwh, this is the baseline usage

Install separate hybrid inverter with 6kw solar panels, this will offset roughly 12-15kwh daily consumption, or 400kwh per month

As you can see, the total import energy will reduce to 1850 kWh - 400 kWh = 1450 kWh

No more surcharge! Issue resolved

Many still confused.

They need to add battery at home to fully offset 1 to 1.