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Home electrification has many benefits: it is cleaner, more efficient, and reduces environmental degradation.

It also means that existing infrastructure for managing power coming into homes may need to be rethought. When customers want to switch from gas to electric appliances or add an electric vehicle charger to their home for example, many customers are faced with having to upgrade their electric service. This is an expensive project, and many customers may decide not to electrify. Fortunately, some emerging technologies in the California market are designed to intentionally balance a home’s power usage, and allow homeowners to avoid expensive panel upgrades, making electrification a workable option in situations when electrical upgrade costs or local infrastructure shortfalls would otherwise put a stop to the project.

These devices are known as “intelligent power management technologies” or IPMTs. They give customers options to juggle the use of different appliances and their power requirements to avoid capacity constraints and reduce installation costs when looking to fully electrify their homes.

They also have a much broader importance: helping the utilities manage and reduce the impact of millions of additional heat pumps, electric vehicles (EVs), and other smart appliances that California expects to add to the grid. The additional expected load is not insignificant. For example, California plans to have more than 12 million EVs on the road by 2035.

“These (IPMT) technologies are a real opportunity for utilities in California,” said Nick Neverisky, manager of Consumer Insights at VEIC and one of the authors of a CalNEXT report on alternative technologies that can mitigate the need for an expensive panel upgrade. For utilities, the technologies could make it easier for customers to participate in energy efficiency and demand response programs. It will be welcome help, said Neverisky, noting that “as California moves to rapidly electrify, the state will run into capacity constraints on a grid level, on a neighborhood level, and on a household level.”

With funding from CalNEXT — California’s emerging technology initiative — the VEIC team, with support of the Ortiz Group, recently published a report, “Market Study of Household Electric Infrastructure Upgrade Alternatives for Electrification”. This report looks at four alternative technologies and how each could be used to reduce the overall grid demand, both on a customer and a utility level.

“These technologies can help manage that capacity issue on a larger scale,” Neverisky said, noting that reducing the power demand helps utilities avoid the need for additional distribution infrastructure.

The study included smart technologies in the following four categories: outlet splitters, smart circuit breakers and relays, circuit control units, and smart electric panels.

The outlet splitter is the most basic technology. It is a circuit-sharing switch that splits an outlet between two loads, while preventing them from both drawing power at the same time. It’s designed to control power draw when two major electric devices are in the same room and can share a circuit, such as an EV charger and a clothes dryer both located in a garage.

A big advantage of the outlet splitter is that it does not require professional installation or configuration to meet code requirements. It’s a solution that could be easily utilized by a homeowner or resident. Its low cost and portability make it a good option for rental units.

A circuit control unit is another more comprehensive smart technology option. This is a stand-alone load management device that prevents a device from operating depending on available power on a circuit.

“Let’s say your electrical panel doesn’t have enough space to put in another circuit for the electric car charger,” said Alex Pine, an energy consultant with VEIC and a co-author of the report. “The electrician installs one of these circuit control devices on an existing circuit, for example an electric stove. This allows the stove and electric car charger to share the same existing circuit. When you get home, you plug in the car and the car starts charging. When you start cooking, the car charger shuts off, then resumes as soon as you are done.”

It’s best suited for a low-priority system and a high-priority system, or for two systems (such as heating and air conditioning) that will not run at the same time.

“They’re inexpensive, and they’re very easy to install for a hardwired device,” Pine said. “These circuit control units can be used in an application where the homeowner or resident is looking to add one new electric load and need a simple solution.”

A potential future option currently under development is a smart circuit breaker. A smart circuit breaker provides the same overcurrent protection as a conventional circuit breaker and installs in a conventional circuit breaker panel. Smart circuit breakers, however, can also collect electrical system usage data and control the circuit they are installed on. Smart circuit breakers are currently on the market but at the time of the report did not offer intelligent power management.

When they are on the market, these features could open the door to power management that is scalable, allowing a customer to juggle power between individual circuits in their circuit breaker panel. This is especially important for houses where a range of additional electrical equipment is being added.

A smart panel is the broadest solution. A smart panel fully replaces a traditional electric panel and is fully integrated into the functionality of the home. It typically allows for control, monitoring, and management of all circuits within the house, with features such as energy consumption monitoring and remote access capabilities. It allows customers to better understand how and when they use electricity, which may encourage them to reduce energy consumption overall and/or shift energy consumption to off-peak hours for customers on time-of-use rates. As a smart panel manages all circuits in a building, there is more flexibility in managing circuits including smaller capacity ones.

One big challenge for all these technologies is getting the word out — to customers who would benefit by being able to afford the upfront cost of electrification, to utilities that could benefit from customers managing their increased electricity demand right at the source, and to contractors and electricians, who are key in facilitating their adoption in homes.

“Demonstrating how IPMTs can help homeowners achieve their energy goals, whether electrification or savings, is necessary to gaining customer support for these technologies,” the authors wrote in the report.

Customer buy-in, the authors emphasize, will greatly help California meet its ambitious carbon reduction goals.

“We’ve got older homes that don’t have as much capacity, with residents who do not have the income to afford to retrofit service upgrades,” Neverisky said. “If we want to continue to decarbonize, and do so equitably, these smart technologies are going to be part of the solution.”

As utility customers consider switching out old appliances to cleaner electricity in their homes or adding EV chargers to their garages, these technologies offer a bridge to overcome the first-cost barrier and help facilitate success. Utility incentives could entice customers and give them the confidence boost they need to make the decision to go electric and be a part of the solution to decarbonize California.

To learn more about this project, read the report on the CalNEXT website, or email info@calnext.com to continue the discussion.

Written by Emily Pickrell, this article was submitted by CalNEXT. CalNEXT is a statewide initiative to identify, test, and grow electric technologies and delivery methods to support California’s decarbonized future. CalNEXT is funded by the ratepayers of California investor-owned utilities and provides a means for studying emerging technologies and energy-efficiency innovations that have the potential to save energy via utility programs and/or market support. 

Commentary: Smart panel technology may replace need for pricey upgrades is an article from Energy News Network, a nonprofit news service covering the clean energy transition. If you would like to support us please make a donation.