![]() Electricity sent to the grid from your solar system is used by other consumers on the grid, such as your neighbours. This new system, introduced in April 2023, measures the net exported solar energy, and the consumer is credited for the electricity exported. In California, the metering rules were recently changed to a new Net metering system called the Net Billing Tariff (NBT). The US has several different metering systems depending on your state. In some states, meters measure all solar electricity produced by your system, and therefore, your electricity will run through your meter before reaching the switchboard, not after it. ![]() In the following scenario, I’m assuming the meter only measures the electricity being exported to the grid, as is the case across most of Australia. Metering systems work differently in many states and countries around the world. Excess solar energy runs through the meter, which calculates how much power you are either exporting or importing (purchasing). What happens after electricity reaches the switchboard? The Tesla Powerwall 2 is a popular AC battery system that can be added to almost any existing solar system. Most hybrid solar systems with battery storage can automatically isolate from the grid (known as islanding) and continue to supply some power during a blackout.īatteries can be added to on-grid systems at a later stage if required. If the solar inverter were still feeding electricity into a damaged grid, it would risk the safety of the people repairing the fault/s in the network. Since blackouts usually occur when the electricity grid is damaged. Unlike most hybrid or battery systems, on-grid solar systems cannot function or generate electricity during a blackout for safety reasons. Any excess solar power you generate is exported to the electricity grid, and you usually get paid a feed-in-tariff (FiT) or credits for the energy you export to the grid. Depending on the type of metering used, the solar power you generate is typically used to power your home. These systems use either solar inverters or microinverters and are connected to the public electricity grid. On-grid or grid-connected solar systems are the most common system used by homes and businesses. ![]()
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