How Tesla Powerwall storage works
The Tesla home battery can be mounted either inside or outside. Ideal locations are your garage, utility room, or external wall.
It connects directly to your fuse board. There is also a separate ‘Gateway’ which monitors energy flows in your house and optimises battery charging and discharging.
Charging with solar electricity
If you have solar panels, you will normally generate more electricity than the house can consume. The Tesla Powerwall 2 allows you to capture that excess solar energy. You can then draw on it either when the sun isn’t shining, or if you need a lot of electricity in one go, e.g. if you put the cooker and the kettle on at the same time.
Charging with cheap, off-peak electricity
With smart tariffs, you can charge your Tesla home battery when electricity is very cheap. You can then use this stored, cheap electricity when rates are high. For example, you might charge the Powerwall at night at a rate of 7p and then consume that stored electricity at lunchtime the next day when electricity would normally cost you 14p per unit.
The whole process is automatic
The good news is that you don’t have to flick a switch or make any decisions for home battery storage to work. Everything happens automatically.
The Tesla Gateway is constantly monitoring electricity flowing around your house, and charges / discharges your Powerwall 2 accordingly.
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