Smart Electrical Panel Startup SPANs NREL’s Accelerator Programs
SPAN created a smart electrical panel that goes beyond traditional capabilities. Photo from SPAN
Imagine a severe storm knocks out a neighborhood powerline; while most homes go dark, one homeowner seamlessly manages their backup energy, prioritizing critical appliances. This is not the future—it is happening now with SPAN’s smart electrical panel.
SPAN is the only startup company to go through two of the National Renewable Energy Laboratory’s (NREL’s) startup assistance programs: the Shell GameChanger Accelerator Powered by NREL (GCxN) and the Wells Fargo Innovation Incubator (IN2). SPAN created a smart electrical panel that goes beyond traditional capabilities, allowing users to control individual circuits for individual devices. SPAN also has an app that provides users with a dashboard to keep track of the connected appliances and electric loads. The panel provides real-time visibility into a homeowner’s energy consumption, broken out by individual breakers, so homeowners can prioritize different loads during a power outage, while utilities can gain insight into grid flexibility strategies.
When NREL Senior Engineer Bethany Sparn had SPAN’s smart panel installed in a lab, all the laboratory electricians were excited about it.
“The electrician that installed the panel asked me how it worked, and I explained that every circuit had a dedicated power meter and relay, all hidden in the backplate of the panel,” Sparn said. “They thought it was really cool. The SPAN panel shook up the world of breaker panels in a way that feels like the early days of smart thermostats. They created a product that would be beneficial to utilities and consumers.”
SPAN Vice President of Business Development Alex Pratt said the company reimagined a power panel from the ground up.
“Each of the circuits in our panels are granularly metered and controllable through a relay,” Pratt said. “This combined with significant onboard processing and multichannel communications creates a powerful platform to provide novel home energy management capabilities.”
The first project that brought SPAN’s technology to NREL was through the GCxN program in 2019. NREL scientists, including Senior Research Engineer Shibani Ghosh, focused on simulations to test the possible impacts of high adoption of SPAN panels at the neighborhood scale under a utility’s distribution feeder. The simulations demonstrated how grid operations could improve and help utility consumers when individual consumptions are managed by SPAN smart panels.
“If a smart panel like SPAN’s can communicate and track when the electricity price goes down,” Ghosh said, “you can schedule the operation of your devices and save money within your time preferences.”
SPAN is the only startup to participate in both the IN2 and GCxN programs. Photo from SPAN
The results of the simulations supported that SPAN’s panel could deliver grid benefits as expected, so as the GCxN project wrapped up, SPAN joined IN2 in 2020, initiating Sparn’s work with the smart panel in the lab.
“SPAN was unique in that they had already gone through GCxN, but that had been an entirely simulation-based project,” Sparn said. “For IN2, we wanted to get their hardware in the lab. We wanted to look at a number of features that could help people add electrical equipment or provide resilience. For instance, if you install their panel with a backup battery, you can change what circuits are powered during a grid outage and even prioritize them.”
Pratt points to a concrete example of how the panel operates and provides value when a homeowner goes to install a new electrical load in the home, such as an electric vehicle (EV) charger or heat pump. These additions could exceed the amount of electricity the home was originally designed to draw.
“The panel eliminates the need for the consumer to upgrade their service level with a utility and instead will intelligently balance the loads in their home automatically,” Pratt said.
The laboratory testing of the panel confirmed that its advanced features, such as turning off circuits to avoid overloading the electrical service and configurable backup power, were working as expected. The IN2 laboratory experiments laid the groundwork for further collaboration between SPAN and NREL.
In addition to the GCxN and IN2 programs, another collaboration opportunity was led by Xin Jin, NREL group manager for Grid Edge and Advanced Controls at the Building Technologies and Science Center. Jin and his team developed an artificial intelligence (AI)-driven home energy management system, called foresee™, which won an R&D 100 award in 2018. Through a cooperative research agreement after the IN2 project, Jin explored how integrating SPAN’s panel with foresee could generate additional benefits.
“This maximized the work NREL did with SPAN through the GCxN and IN2 projects,” Jin said. “With their panel and our software, we can modulate the thermostat, manage EV charging, and control the water heater. We can talk to every major load in the home. By combining their panel and circuit-level power metering with foresee, there is more control, and that translates to utility bill savings.”
NREL’s foresee software uses advanced algorithms that learn the dynamics of each home along with its occupants’ patterns to predict future energy consumption. Automated control of connected appliances and systems will save energy, reduce strain on the grid, and could save homeowners up to $9 billion on energy bills—without asking people to become energy experts. Introduced in 2018, it was a significant breakthrough in the home energy management market, attracting interest from startups and large HVAC manufacturers.
SPAN continues to scale up in the way it works with NREL. The company started in California and Hawaii, and its panels are now widely deployed in all 50 states, supported by a network of hundreds of electrical installers. While homeowners and contractors have traditionally been SPAN’s target audience, it is also exploring applications for utility grid services.
“As we’re trying to introduce a new category and new approach to home energy management technology, having the credibility from a partnership with an entity like NREL is invaluable,” Pratt said. “We’ve proven the viability and value of our product. We are now focused on accelerating adoption, and electric utilities represent a step-function change in the scale we can achieve and impact we can have.”
The SPAN panel made a lasting impact on the NREL researchers, and they remain excited about its potential.
“Their panel is really sleek,” Jin said. “It’s like an art piece—it’s very beautiful and well built. In terms of function, it’s very advanced.”
Learn more about the GCxN program and IN2.