Rerun: Induction Ranges, No Rewiring Required, with Sam Calisch

Climate Break

Induction-Range Stoves:

Gas stoves have recently been in the news as a source of harmful pollutants in the home and generators of greenhouse gas. The adoption of energy-efficient induction-range stovetops could offer a solution. Induction cooktops use electromagnetism to generate heat from directly within cookware, preventing the levels of energy loss seen in conventional gas or electric cooktops. The U.S. Consumer Product Safety Commission is not coming for anybody’s gas stove, despite a recent frenzy over concerns of bans on gas stovetops, so cooks around the country can pick the stove tops of their choosing. But as a handful of journalists have pointed out, the notion that gas stove tops are better for cooking than electric, really a matter of opinion, could have something to do with advertising investments by the American Gas Association. In fact, many chefs actually prefer induction cooktops to gas, and their environmental benefits are substantial.

Induction stoves contain an electromagnetic coil that generates a magnetic field when turned on. That magnetic field creates metallic resistance from compatible cookware, generating heat from within itself. Conversely, conventional gas and electric stoves transfer heat to pots and pans through a flame or electric coil. In that heat transfer, energy is lost. Induction has an energy efficiency of 85%. Electric stoves and gas stoves are 75-80% and 32% energy efficient, respectively, making gas the least energy efficient stove type. Across the United States, only about 32% of households use gas ranges, but in some states, like California, the number is closer to 70%. Energy Star estimates that a widespread shift to induction ranges would collectively save the United States over $125 million in energy costs and over 1000 GWh of energy.

Plug-in Induction-Range Stoves:

While Induction stoves are highly energy efficient, and can save consumers money on their energy bills, the upfront cost can be significant. According to Consumer Reports, a typical induction stove can range from roughly $1000 to $4000. Their installation can sometimes require upgrades to the home’s electrical wiring, which can add additional cost and complicates the process. Battery-powered induction-ranges like those in production by Channing Street Copper Company can be plugged in directly to standard electrical outlets. Plug-ins remove the complication of updating electrical panels or installing special high-voltage outlets, but they can be more expensive, costing consumers roughly $6000. However, a purchase of a standard induction or plug-in induction range may qualify consumers for rebates at federal and local levels.

Sam Calisch is an engineer and scientist working on decarbonization and electrification. He is the co-founder of Channing Street Copper, where he leads technology development.

For a transcript, please visit https://climatebreak.org/an-induction-range-no-rewiring-required/