Tesla has been a pioneer in home energy storage, and it now has a new version of the flagship product, the Powerwall, which has inspired many competitors.
Above, some features and considerations if you are thinking of adding this protection. In 10 years, I suspect this will be as standard as a heating and air-conditioning system.
Our top pick for the best home battery and backup system goes to the Tesla Powerall + due to its 10-year warranty, great power distribution, and energy capacity of 13.5kWh. However, since the Tesla Powerall + is quite expensive and different systems may fit your needs better than others, we’ve included a variety of picks to fit all types of needs and budgets.
Tesla Powerwall + features: Capacity: 13.5kWh (kilowatt-hour) | Power source: Solar panels | Controls: Dedicated app | Multi-unit configurations:Yes
The Tesla Powerwall is a leading battery backup system that simplifies your switch to backup battery power. With the ability to recharge using solar PV panels, you can rely on stored solar energy during power outages.
The Powerwall + provides an energy capacity of 13.5kWh and a power rating of 7.6kW, delivering continuous power of 5.8kW in the absence of sunlight. It comes with a ten-year guarantee and can be monitored and managed through its app. However, you can only purchase a Powerwall if you also buy Tesla’s solar panels.
To ensure you have the right-sized backup batteries for your home, you can connect up to 10 Powerwalls. It’s recommended to use the Tesla Powerwall with a solar panel system for optimal results. Additionally, some states, such as WA (22%), offer a Federal Solar Investment Tax Credit to help with costs. The long-running PBS home improvement show This Old House strongly encourages customers considering the Tesla Powerwall+ to take advantage of all local, state, and federal tax incentives to help reduce the cost of installation.
One Reddit user said that it’s a “game-changer for continuous power,” and that it’s well worth it if you want backup during outages or to store excess solar energy.
Green Mountain Power has a virtual power plant (VPP) consisting of more than 4,000 Tesla Powerwalls in Vermont. It not only increases the amount of renewable energy from the electrical grid and maintains its stability, but also saves millions of dollars.
Green Mountain Power (GMP) is an energy transformation company providing power and innovative products and services to three-quarters of Vermont. The company is changing the traditional electrical grid to focus on energy storage and consumption through batteries across the state. In particular, Tesla Powerwalls are used for this, located in the homes of residents of the state, which support the electrical grid when the need arises. The goal is to buy less dirty energy from the regional grid and fight climate change.
“Over time, as we invest in this and develop it with our customers, we will literally create a Vermont that can withstand all of the impacts of the climate crisis because we have decentralized all aspects of the grid,” said GMP CECO Mari McClure, according to WCAX (via Electrek).
If there is a power outage, power remains on by extracting power from Tesla Powerwalls installed in households across the state. “When the greater grid is affected by weather, the local resilient efforts can keep everyone safe, warm, powered up,” said McClure.
GMP is no stranger to this, as their program has been running for several years now. McClure said there are over 4,000 Powerwalls online, which is really impressive. This VPP saved over $3 million in 2021 alone. In addition, almost $1.5 million has already been saved due to one event in 2022.
Pity I can never buy one, because I don’t want one cent of mine going to the nut that owns Tesla!
My hope is that, since this is all early generation, a lot of companies will be vying to fill the need.