Everything You Need to Know About the Tesla Powerwall Battery

Jene J. Long

Top 17 Tesla Powerwall Questions Answered [2020 Guide] – Southern Energy  Management

The Tesla Powerwall battery is a powerful cornerstone of sustainable energy for your home. Since its launch in 2015, it has been praised for its legacy of excellent potential in storing energy in residential and commercial settings.

The company that created the Tesla Powerwall has combined existing technologies and products and reimagined them into a successful storage solution. When a Tesla Powerwall is paired with a solar energy system, you have ensured a sustained power supply during the day or night.

Outstanding Features of the Tesla Powerwall Battery

    Backup Protection

Unlike gasoline generators, the Tesla Powerwall keeps your lights on and your appliances functioning without the need for fuel and the distraction of noise. It stores energy, detects power outages, and automatically becomes your source of energy at home when the grid goes down. Pair it with a solar energy system and you will have power running your home for days.


With a Tesla Powerwall, you don’t have to depend on power from the grid. You can store solar energy that will be at your disposal when the sun is not shining. Combine it with other Tesla products to get these benefits:

  • Save money
  • Reduce your carbon footprint
  • Prepare your home for power outages


You can use the Tesla app to monitor your home’s energy production and consumption in real-time. It includes settings that will allow you to choose preferences to optimize these features:

  • Energy independence
  • Outage protection
  • Savings

Control your Tesla Powerwall system from anywhere with instant alerts and its amazing remote access attribute.

Modern and Compact Design

The minimalist design of the Tesla Powerwall complements a variety of home styles and allows for easy installation and versatile mounting options. Its compact all-in-one construction can be used for indoor or outdoor spaces in your home.

Remarkable Tesla Powerwall Specs

The Tesla Powerwall is sized for everyday use at your home so that you can store excess electricity in the battery system instead of sending it back to the grid. It makes maintaining a sustained power supply easier.

Get familiar with the various important metrics and technical specifications of this power-packed residential energy storage:

  • Energy Capacity: 13.5 kWh with 100% depth of discharge and 90% round trip efficiency

  • Power: 7kW peak/5kW with a continuous seamless backup transition and pure sine wave output

  • Size: 45.3” x 29.6” x 5.75” or 1150 mm x 753 mm x 147 mm

  • Weight: 251.3 lbs / 114 kg

  • Installation: Floor or wall mounted, indoor or outdoor, up to 10 Powerwalls, -4 degrees Fahrenheit to 122 degrees Fahrenheit / -20 degrees Celsius to 50 degrees Celsius, water and dust resistance to IP67

  • Certifications: Meets the US and International EMI (Electromagnetic Interference) standards
  • Warranty: 10 years

Cost of the Tesla Powerwall in 2020

As of November 2020, the total cost of installing one Tesla Powerwall battery system is $11,500. The breakdown of this cost goes into:

  • 1 Powerall battery = $7,000
  • Gateway and installation = $4,500

Gateway is Tesla’s energy management system. If you install more Powerwall battery packs, the Gateway and installation cost decreases. For example, two Powerwall batteries will reduce the cost to $4,000.

However, if you install a Tesla Powerwall with a solar panel system, you get a tax credit equal to 26% of the installation costs. Hence, your installation cost for one Powerwall will drop by $2,990, bringing the cost down to $8,510 from $11,000.

In some states that offer solar battery incentives, this amount will even be lesser since the SElf-Generation Incentive Program (SGIP) provides a $3,375 rebate for Tesla Powerwall installation.  Thus, if you combine the federal tax credit with a state or local incentive, you can get a 50% reduced cost when you install a Tesla Powerwall as your solar home battery.

Is a Tesla Powerwall Battery Worth It?

A Tesla Powerwall Battery can be worth it for your home if you live in a state that offers solar battery incentives. It will not add much to the cost if you get a solar energy system installed for your home.

You can even save more on electricity bills with a Tesla Powerwall battery because of its time-based control mode.  It can give you the most for your money with its amazing specifications and features, optimized with the proper installation.

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