The Power to Choose Clean Energy

WattTime is a nonprofit that offers technology solutions that make it easy for anyone to achieve emissions reductions without compromising cost, comfort, and function.

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Grid emissions intensity on a scale of 1 - 100 relative to each location. Lower on scale is the cleanest this grid gets and higher on the scale is the dirtiest this grid gets.

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“How clean is my electricity if I use it right now?”

Now your customers can know. Our breakthrough, proprietary technology detects which power plants are powering your devices and when. Our solutions can empower any IoT device, from thermostats to electric vehicles, to automatically prioritize energy from cleaner generation sources.

WattTime News and Insights

Solutions For Everyone

We offer technology solutions that make it easy for anyone to achieve emissions reductions without compromising cost, comfort, and function.

The Power to Choose Clean Energy

“How clean is my electricity if I use it right now?”

WattTime News and Insights

Is your goal real-world impact? Then use marginal emissions.

The New York Times: The Real-World Costs of the Digital Race for Bitcoin

WattTime unveils new health-focused power grid emissions signal, partners with Toyota and Lexus for first implementation

INSIGHT BRIEF: Accounting for Impact: Refocusing GHG Protocol Scope 2 methodology on ‘impact accounting’

REsurety and WattTime partner to increase accessibility to high-quality marginal carbon emissions data

Solutions For Everyone

Automated Emissions Reduction / AER

Renewable energy siting / Emissionality

Carbon-Optimized Building Design

Tools for policymakers

Measuring power plant emissions from space

Monitoring all GHG emissions / Climate TRACE