Copper Raises $28 Million Series A to Accelerate Kitchen Electrification

Company Snapshot
Copper is tackling one of the hardest pieces of the building decarbonization puzzle: kitchen electrification in legacy housing. The Berkeley-based startup has created a battery-equipped induction stove that works with existing 120-volt outlets, eliminating the need for costly rewiring or panel upgrades. For property owners and housing authorities, this innovation makes it feasible to electrify kitchens in older buildings quickly and affordably, bridging a major gap in the clean energy transition.

Title:
Copper Raises $28 Million Series A to Accelerate Kitchen Electrification

Subtitle:
Prelude Ventures leads the round to scale Copper’s battery-integrated induction stove platform for legacy residential buildings.

Intro
On September 11, 2025, Copper announced it had closed a $28 million Series A funding round led by Prelude Ventures, with participation from Building Ventures, Voyager, Collaborative Fund, Climactic, and others (Axios). Founded in 2022 and headquartered in Berkeley, California, Copper is led by Co-founder and CEO Sam Calisch.

This round brings Copper’s total funding to $38 million. The company’s mission is to enable full kitchen electrification in older multi-unit buildings without the high costs of electrical infrastructure upgrades. Copper’s induction stoves, which integrate a battery system, plug directly into existing 120-volt outlets, allowing property owners to modernize kitchens while reducing carbon emissions and improving resilience.

The company has already shipped over 1,000 units and secured a 10,000-unit contract with the New York City Housing Authority (NYCHA), signaling rapid market validation for its retrofit-ready technology.

What the Company Does
Copper designs and manufactures induction stoves with built-in batteries, enabling apartment electrification without rewiring or panel replacement. Each unit manages its power consumption intelligently, offering both energy efficiency and backup power capabilities.

Key Features:

• Plugs into standard 120V outlets, no electrical rewiring required

• Battery-enabled for grid load shifting and backup power during outages

• Embedded software optimizes power draw for cost and carbon savings

• Qualifies for local and federal incentives for electrification and decarbonization

• Enables rapid retrofit deployment in pre-1990s housing stock

With over 1,000 stoves shipped and a multiyear 10,000-unit contract with NYCHA, Copper is positioning itself as a key player in decarbonizing multifamily buildings.

Who It’s Best For
Copper’s product is designed for property owners and public housing organizations seeking scalable, low-disruption electrification solutions.

Ideal Segments:

• Owners and operators of multi-unit residential buildings

• Public housing authorities and municipal agencies

• Real estate portfolio managers focused on sustainability goals

Primary Use Cases:

• Electrification and decarbonization of kitchen appliances in legacy buildings

• Backup power for resilience and tenant safety

• Grid-friendly load management and energy cost optimization

Similar Companies

• Span: Develops smart electrical panels and home energy management systems that complement electrification.

• BlocPower: Focuses on large-scale building electrification and energy efficiency upgrades.

• Rondo Energy: Provides thermal energy storage solutions for decarbonization in commercial settings.

• Gradient: Builds plug-in HVAC systems that electrify heating and cooling without costly retrofits.

Copper stands out for its integrated battery-plus-appliance approach, making electrification plug-and-play for kitchens — a segment often left behind in retrofit initiatives.

Team / Founders

• Sam Calisch, Co-founder & CEO — Former researcher at Rewiring America, a nonprofit focused on accelerating building electrification.

Investors

• Lead Investor: Prelude Ventures

• Participants: Building Ventures, Voyager, Collaborative Fund, Climactic, and others

• Total Funding: $38 million, including this $28 million Series A round

Adoption / Traction

• Over 1,000 units shipped

• 10,000-unit contract with the New York City Housing Authority

• Rapid scaling in multi-unit residential markets

How to Get in Touch

• Website: copperhome.com

• Headquarters: Berkeley, California, USA

• Contact: [email protected]