Tesla Powerwall

What Is The Tesla Powerwall?

The Tesla Powerwall is a rechargeable lithium-ion battery that is primarily intended for home storage and is often paired with residential solar panels. It is designed for EV charging, self-consumption, shifting power usage, and short-term backup power. Each Tesla Powerwall 2 offers 13.5kWh of usable energy storage capacity and can be stacked in a chain.

How does the Tesla Powerwall work?

The Powerwall solar battery intelligently stores energy during times when energy rates are lower and uses the stored energy when electricity prices are higher. The self-contained, waterproof unit is always on, operates quietly, and can be mounted on the floor or wall individually or as part of a stack of multiple batteries.

The Tesla Powerwall is usually paired with a home solar panel system. A house equipped with solar panels usually produces more electricity during the day than it consumes at the time of generation. This extra solar power can be stored in the Powerwall battery instead of being sent back to the electric grid. At night or when the solar panels are not producing enough electricity to meet the home’s demand, the homeowner can pull energy from the Tesla Powerwall instead of having to buy it from the utility.


What are the benefits of the Tesla battery?

The benefits of the Tesla Powerwall are that it is a high quality and attractive home battery with smart software and a user-friendly smartphone app at a relatively affordable price. The Tesla solar battery is one of the most popular options for home backup power and EV charging.

The Tesla Powerwall can automatically detect a power outage, disconnect from the grid, and then restore power to your home in less than a second, quickly enough that you may not even be aware that there was an outage. A single Powerwall has enough energy storage capacity to power an average home for an evening during a power outage.

If you have solar panels and a Tesla battery, your solar energy system will continue to power your home and recharge the battery during an outage. Without the solar battery, your solar energy system will not be functional until power is restored to the electric grid.

How much does the Tesla Powerwall cost?

On average in 2021, the Tesla solar battery cost around $16,000 installed after factoring in equipment (Powerwall, Gateway, and related hardware) and labor costs. There may be additional installation and financing costs depending on your situation. The battery is only available installed by a certified dealer. The entire system including installation is eligible for the 26% federal tax credit and may also be eligible for local rebates.

What is the Powerwall warranty?

Tesla offers the Powerwall 2 with a 10-year warranty on parts and performance (70% energy retention) after the initial installation. Click here to learn more about the Tesla Powerwall warranty.

Who can install my Tesla Powerwall?

The Tesla Powerwall 2 solar battery is only available for purchase through an installer who is certified by Tesla. As a Tesla Certified Installer in Texas, Colorado, and Florida, Freedom Solar offers Tesla Powerwall installation with or without home solar panels.


Where Does Freedom Solar Install Tesla Powerwalls?

We install batteries and generators for backup power across Texas, Colorado, and Florida, including:

  • Austin
  • Dallas
  • Houston
  • Fort Worth
  • San Antonio
  • Denver
  • Fort Collins
  • Colorado Springs
  • Pueblo
  • Tampa

We ordered our Tesla battery to augment our already installed solar array. We called right after the big winter storm in February 2021. Understandably, there was a six month wait. But the team made it as easy as possible. They handled literally all the paperwork. I filled everything out once. Then as each part of the process, such as permitting, came up they sent the already filled paperwork to the responsible party. It was almost like having a full concierge service.

As for solar and a battery. We have 20 panels and a single Tesla power wall. We have an older pool pump and a 2400 square foot home. Two adults working from home. The pump on the pool runs 8 hours a day. With the battery we are 50% to 70% self powered monthly. It is a balance with winter months not being so sunny and also not needing to run the AC. The benefit I didn’t really understand until seeing it was that the battery could hold us over almost all night. It was cheaper to use our own power from the battery then it is to send power back to the grid. IE. You send power back at x rate and get a credit. But use power later in the day at y rate. Y rate always ended up more costly then x rate. So better to just keep our power and use it our self.

The real benefit is that we literally could power our house with no pool for a few days if it got bad with some solar production. The battery can also be notified of a storm and hold on to a 100% charge plus get power from the grid to get there. It won’t save you a TON of money. But it gives us a ton of peace of mind. Plus feels good to not rely so heavily on the Texas grid.

Azucena K., Austin, Texas

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