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Definitely. A solar battery increases your “solar self-consumption” and reduces the need to import energy from the grid. While solar panels can help offset your energy usage during daytime, the panels do not produce energy at night. Most homes experience peak energy usage at night when the whole family is back home from work or school. Family members watch TV, listen to music, use their laptops for homework, or cook in the kitchen. During this period, your energy system will import electricity from the grid because there is no solar energy being produced. This means that your household will likely see high electricity bills, even with existing solar panels in place. However, with the help of Tesla Powerwall, you can supply your home with solar energy all day and night, maximising your energy bill savings. We’ll show you a real example of our customer who has a solar system, complete with a Tesla Powerwall battery. The charts below reflect the monitoring data from his solar system. From the charts, you can see that his daily home energy usage is almost completely supported by solar energy (day and night). 

Chart A: From the chart, we can see the daily energy usage patterns in the household. This gives us an indication of how much energy production is needed to offset this usage.

Chart B: Solar panels are producing solar energy. The home is getting enough solar energy to supply its energy usage in the day. 

Chart C: This chart shows that the Tesla battery supplies the home with power during the early mornings, evenings and nights, when solar energy production level is zero. In the middle of the day, when the solar energy production is at its maximum, excess solar energy goes into charging the Tesla Powerwall battery. 

Chart D: This chart shows that even after charging the Tesla Powerwall battery, there is still excess solar energy production that is not being utilised by the home. So, this excess solar energy is then fed back into the grid, earning the owners some energy credits.