Quick Takeaways
- The Indiana Subaru plant now produces far more clean power than its new expansion consumes, cutting costs and emissions in one move.
- The rooftop system locks in long-term decarbonization for U.S. vehicle manufacturing while boosting energy resilience.
Subaru of Indiana Automotive rooftop solar went live at the company’s Lafayette manufacturing site, delivering significantly more clean electricity than the newly expanded production facility actually requires. The project marks a major step in Subaru’s strategy to cut operating emissions while improving energy efficiency across its U.S. operations.
Subaru of Indiana Automotive (SIA), the automaker’s only vehicle assembly plant outside Japan, has installed a 204-kilowatt rooftop solar system on top of its newly constructed factory expansion. The system was commissioned in August 2025 and is already supplying renewable power directly into plant operations.
Subaru of Indiana Automotive rooftop solar exceeds site energy needs
The newly deployed Subaru of Indiana Automotive rooftop solar array is generating more than three times the electricity consumed by the expanded facility. This means the site is producing a net surplus of renewable energy, which is redirected to support the wider Lafayette plant.
This surplus enables Subaru to:
SIA manufactures gasoline-powered models including the Ascent, Crosstrek, and Forester for the North American market. Subaru’s all-electric Solterra continues to be produced in Japan.
Measurable carbon reduction from Subaru of Indiana Automotive rooftop solar
Subaru estimates that the solar system will offset more than 250 metric tons of carbon dioxide every year, an amount comparable to the annual electricity usage of about 43 homes. Over its projected 30-year lifespan, the installation is expected to generate millions of kilowatt-hours of zero-emission electricity.
This long-term clean energy output supports Subaru’s broader decarbonization goals by directly lowering the environmental impact of vehicle manufacturing in the United States.
A continuation of Subaru’s sustainability leadership
The solar installation builds on a long history of environmental initiatives at the Lafayette facility. The plant was the first U.S. auto assembly site to achieve zero-landfill status, setting an industry benchmark for waste reduction and material recovery.
Subaru continues to invest in:
These initiatives are designed to shrink the company’s manufacturing footprint while supporting long-term operational sustainability.
Emergent Solar delivers turnkey renewable solution
To execute the project, Subaru partnered with Emergent Solar Energy, a West Lafayette-based company specializing in turnkey solar and energy-storage solutions. Emergent designed and built the entire system, supporting Subaru’s transition toward cleaner and more efficient manufacturing operations across Indiana.
With the new solar system now fully operational, Subaru of Indiana Automotive is reinforcing its position as one of the most environmentally progressive vehicle assembly plants in North America.
Subaru of Indiana Automotive (SIA), the automaker’s only vehicle assembly plant outside Japan, has installed a 204-kilowatt rooftop solar system on top of its newly constructed factory expansion. The system was commissioned in August 2025 and is already supplying renewable power directly into plant operations.
Subaru of Indiana Automotive rooftop solar exceeds site energy needs
The newly deployed Subaru of Indiana Automotive rooftop solar array is generating more than three times the electricity consumed by the expanded facility. This means the site is producing a net surplus of renewable energy, which is redirected to support the wider Lafayette plant.
This surplus enables Subaru to:
- Lower total electricity costs
- Reduce dependence on grid power
- Decrease overall operational emissions
- Improve long-term energy resilience
SIA manufactures gasoline-powered models including the Ascent, Crosstrek, and Forester for the North American market. Subaru’s all-electric Solterra continues to be produced in Japan.
Measurable carbon reduction from Subaru of Indiana Automotive rooftop solar
Subaru estimates that the solar system will offset more than 250 metric tons of carbon dioxide every year, an amount comparable to the annual electricity usage of about 43 homes. Over its projected 30-year lifespan, the installation is expected to generate millions of kilowatt-hours of zero-emission electricity.
This long-term clean energy output supports Subaru’s broader decarbonization goals by directly lowering the environmental impact of vehicle manufacturing in the United States.
A continuation of Subaru’s sustainability leadership
The solar installation builds on a long history of environmental initiatives at the Lafayette facility. The plant was the first U.S. auto assembly site to achieve zero-landfill status, setting an industry benchmark for waste reduction and material recovery.
Subaru continues to invest in:
- Advanced waste-reduction systems
- Resource-conservation technologies
- Low-emission manufacturing processes
- Renewable energy integration
These initiatives are designed to shrink the company’s manufacturing footprint while supporting long-term operational sustainability.
Emergent Solar delivers turnkey renewable solution
To execute the project, Subaru partnered with Emergent Solar Energy, a West Lafayette-based company specializing in turnkey solar and energy-storage solutions. Emergent designed and built the entire system, supporting Subaru’s transition toward cleaner and more efficient manufacturing operations across Indiana.
With the new solar system now fully operational, Subaru of Indiana Automotive is reinforcing its position as one of the most environmentally progressive vehicle assembly plants in North America.
Company Press Release
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