Terminal dashboard that throttles my PC during peak electricity rates
WattWise is a CLI tool that monitors my workstation’s power draw using a smart plug and automatically throttles the CPU & GPUs during expensive Time-of-Use electricity periods. Built with Python, uses PID controllers for smooth transitions between power states. Works with TP-Link Kasa plugs and Home Assistant.
Terminal dashboard that throttles my PC during peak electricity rates launched on April 1, 2025 with 98 votes, #497 of 7,818 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
WattWise is a command-line tool that reduces electricity costs by automatically throttling CPU and GPU performance during peak-rate Time-of-Use periods. It monitors power consumption via smart plugs, integrating with TP-Link Kasa devices and Home Assistant, and uses PID controllers to smoothly adjust performance states. Built in Python, it targets users who want to minimize energy expenses on their workstations without manual intervention.
written from the facts on this page · September 2026
From the sources
A terminal-based power monitoring dashboard and power optimization controller that helps optimize energy costs by automatically throttling CPU/GPU resources during peak electricity pricing periods.
High-performance computing often means high electricity bills, especially in regions with time-of-use pricing. Finding the balance between computational power and energy efficiency becomes critical when running resource-intensive workloads. I have been setting up a workstation for off-loading compute-intensive LLM workflows from my desktop. The build includes dual Epyc CPUs with plans to add 4 GPUs for up to 128GB VRAM to run multiple agents in parallel. A key constraint was ensuring the system could run comfortably on a standard household 120V outlet. Since I already use smart plugs throughout my home, I added one to monitor the workstation’s power consumption. However, checking power…from naveen.ing
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