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Oct 09 2024
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tesla backup switch game changer

Why the Tesla Backup Switch is a Game-Changer for Home Backup Power

By Tesla Powerwall, Solar Battery No Comments

Tesla has a knack for bringing emerging technologies into the mainstream. The Model Y did it for electric vehicles and the Powerwall did it for home battery storage — but there’s a new Tesla offering to keep an eye on: the Tesla Backup Switch.

The Tesla Backup Switch is a small but mighty device that increases the capabilities and lowers the cost of Powerwall backup battery systems. Let’s explore why the Tesla Backup Switch is a game-changer for protecting your home from power outages.

Let’s start with the basics of how the Tesla Backup Switch works and how it’s different from traditional backup battery systems.

What does the Tesla Backup Switch do?

The Tesla Backup Switch is a crucial component of a Powerwall system that detects power outages and instantly switches your home to solar + battery power. All backup battery systems need a device like this (often called a “gateway”) to safely disconnect your home from the grid and allow your solar and battery system to stay active. This safety feature is required by utilities to prevent the backflow of your solar electricity from harming lineworkers as they repair the grid. Without it, your solar + battery system will shut down during power outages.

The Tesla Backup Switch plugs into an electric meter.

In a traditional battery backup system, the gateway is mounted to your wall in a box that’s roughly the size of a pillow. Typically, these systems also require a dedicated breaker box (known as a “sub-panel”) that limits which appliances you can power during an outage. As you can imagine, installing these additional components takes hours of labor on your dime.

The key innovation of the Tesla Backup Switch is that it plugs directly into your electric meter, which is why it’s often referred to as a “meter collar.” It also wires into your existing breaker box, which means you can power any system in your home during outages while reducing the cost and clutter of the installation.

Tesla Backup Switch vs gateway

tesla backup swtich vs gateway venn diagram

What are the benefits for homeowners?

The benefits of using a Tesla Backup Switch for your backup battery system fall into three buckets.

1. Use any appliance during power outages

Traditional backup systems wire into a sub-panel, which means you have to pick a limited number of appliances you can power during blackouts. Oftentimes, this means powering the bare essentials like refrigeration, medical devices, Wi-Fi, and certain outlets and lights.

The Tesla Backup Switch wires into your main breaker box, which means you have access to all lights and appliances in your home during outages — including heating and cooling systems.

2. Less clutter on your wall

The Tesla Backup Switch eliminates the need for mounting a gateway box and sub-panel on your wall. This improves aesthetics and frees up garage space. More importantly, it translates directly into benefit number 3.

3. Lower installation costs

With fewer components, Tesla Backup Switch systems are much quicker and more cost-effective to install. Solar companies in our network have reported installing these in under an hour —  roughly one-third of the time of a typical installation — reducing the system cost by $3,000 to $5,000. 

 

 

Do other battery brands have backup switches?

The Tesla Backup Switch is the first “meter collar” device to be introduced and approved in the United States — but it won’t be long until other manufacturers follow suit. Given the clear benefits to homeowners and installers, we’re expecting similar devices to be available in early 2025.

Which utilities have approved the Tesla Backup Switch?

As a crucial safety device, the Tesla Backup Switch requires utility approval before it can be offered to homeowners. As of October 2024, the Tesla Backup Switch has been approved by the following utilities?

Arizona

California

Colorado

Hawaii

Michigan

Montana

Nevada

New Jersey

North Dakota

Oregon

Pennsylvania

Texas

Utah

Vermont

Washington

Washington

Wyoming

Feb 15 2024
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Duke Energy PowerPair

Duke Energy PowerPair: Up to $9,000 for Home Solar + Battery in North Carolina

By Solar Incentives by State, Solar Rebates & Incentives No Comments

Duke Energy customers in North Carolina will soon have access to rebates worth up to $9,000 for home solar and battery systems.

In May 2024, Duke Energy is opening applications to the PowerPair pilot program that offers a one-time incentive for residential solar and battery installations. Pairing solar with battery storage provides backup power during grid outages and can improve the economic benefits of home solar given the state’s recent cuts to net metering compensation.

The PowerPair pilot will be open to 60,000 kW of solar capacity which will serve a minimum of 6,000 households.

Solar incentives — especially of this magnitude — tend to run out fast. So, let’s talk through how this incentive works and how to claim it.

Duke Energy’s PowerPair Basics

At its core, the Duke Energy PowerPair program is pretty simple. First, install a qualifying solar and battery system through one of Duke Energy’s approved installers (known as “Trade Allies”). Once the system is operational Duke Energy will issue your incentive.

Duke Energy PowerPair Basics

Which systems are eligible for PowerPair?

The incentive only applies to new solar AND battery systems. Solar-only and battery-only systems do not qualify.

  • The system can be leased or owned
  • The program does not limit your system size, however, a maximum of 10 kW of solar and 13.5 kWh of battery qualify for the incentive
  • Upgrades to existing solar + battery systems do not qualify
  • Recently installed systems are eligible if they were completed within 90 days of submitting your PowerPair application
  • The system must be operational within 270 days of receiving a PowerPair reservation notice

At this time, Duke Energy has not released any equipment eligibility requirements.

Two incentive types

There are two options in the program: PowerPair and PowerPair + EnergyWise Battery Control. The key differences are:

  • The rate plan
  • Whether Duke Energy can remotely control the battery to help prevent power outages
PowerPair PowerPair + EnergyWise Battery Control
Solar rebate $0.36 per watt of solar, up to 10 kW $0.36 per watt of solar, up to 10 kW
Battery rebate $400 per kWh of battery, up to 13.5 kWh $400 per kWh of battery, up to 13.5 kWh
Monthly bill credit N/A Based on battery capacity
Can Duke Energy remotely control battery? No Yes, up to 36 times per year
Rate plan Time-of-use Net metering

How much could I save with PowerPair?

The maximum rebate amount for PowerPair is $9,000. That’s based on the following incentive amounts for solar and battery:

  • 36 cents per watt of solar capacity, up to 10 kW
  • $400 per kWh of battery storage capacity, up to 13.5 kWh

However, this incentive can be paired with the 30% federal solar tax credit.

So, let’s say you go for the maximum incentive with a system that costs $45,000. Here’s how PowerPair rebates combined with the 30% solar tax credit would reduce your overall cost by nearly $20,000.

Item Cost
10 kW solar + 13.5 kWh battery $45,000
PowerPair solar rebate -$3,600
PowerPair battery rebate -$5,400
Out-of-pocket cost $36,000
30% federal tax credit -$10,800
Net system cost $25,200

You can actually increase those savings by opting into PowerPair + EnergyWise Battery Control. In this part of the program, solar and battery owners will allow Duke Energy to remotely control their battery up to 36 times per year, with a minium of 30 events, in exchange for a monthly bill credit, estimated at $30-40 per month.

 

 

Applying for PowerPair

The PowerPair application window is between May 10 and June 7, 2024. There will be a random selection process to select participants for the pilot program. If there is still program capacity after this period, the remaining incentive will be issued on a first-come, first-serve basis.

Visit the PowerPair program page to sign up for program notifications.

The Bottom Line

Solar and battery allow homeowners to hedge against rising utility rates and power their homes when the grid goes down. With up to $9,000 in rebates per system, Duke Energy PowerPair program reduces the cost burden of installing solar and battery systems in North Carolina.

This incentive has limited capacity and is expected to go quickly. Connect with an Energy Advisor to make a game plan for claiming it!