NorthWestern Energy has signed a letter of intent to provide energy services for Quantica Infrastructure’s proposed data center development in Montana.
NorthWestern Energy anticipates that service could be provided through its regulated business, pending further evaluation and regulatory considerations. This approach could improve cost efficiency by spreading the fixed costs of operating Montana-based energy infrastructure across a broader customer base, it said.
The projected Phase 1 energy service load is 500 megawatts, with phased growth to 1 gigawatt. Initial electric service could begin as early as 2026.
The expected expansion to full Phase 1 of the data center development is 2030, depending on the progress of permitting, infrastructure development, and other planning activities.
“We’re actively working with Quantica to optimize the transmission infrastructure and generation resources needed to support this project,” said Brian Bird, President and CEO of NorthWestern Energy. “Montana’s clean energy portfolio, reliable grid, and competitive rates make it an attractive location for new industries. This collaboration reflects our commitment to innovation, economic development, and delivering high-quality energy services.”
NorthWestern Energy is currently conducting a transmission study to assess how best to meet Quantica’s energy needs. Quantica has several generation projects in development, and a full energy supply solution would require a balanced portfolio of new resources—including both renewable and on-demand generation—along with infrastructure that integrates with the existing grid.
This approach would help ensure reliability for Quantica’s tenants while supporting grid stability and cost control for all customers, NorthWestern Energy said.
