Battery storage lets you store your excess solar energy generated during the day to use at night, greatly improving your home’s energy efficiency and reducing your dependence on the grid. 

If the utility offers a time of use rate plan, or if you are paying the hourly rate for electricity, batteries can charge when the prices are low so you can use the low cost energy during higher cost times and reduce your monthly electricity bill. 

You can also use battery storage as a seamless back up supply in the event of a grid outage. 

Tassa has excellent battery storage options from LG, Electriq and Enphase.