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You may have been listening to something on hybrid inverters or all in one units.
All in one units combine the battery charge controller and inverter and some have 120 or 240v generator power inputs also built in to charge on cloudy days.
The last few years has seen a lot of new hybrid inverters on the market.
Hybrid inverters have all kinds of features now. The most common application is they can connect to a battery bank and be grid tied at the same time. More advanced setups act as a whole home or nearly whole home UPS.
Some offer a grid tie only setting and you can go back later and add batteries, some have to have batteries from the get go. Others will allow you to only consume your solar power and will prevent power from back feeding on to the grid, say if your power company charges you an extra 20 or 30 dollars per month to have a co-gen or net-meter and only wants to pay 1 or 2 cents per kwh and you opt to keep your stupid smart meter.
If you keep your dumb/stupid smart meter they only know how to count up, any current flow is counted as consumption, so if you push solar power on to the grid the dumb smart meter reads it as consumption.