Are EVs Still Clean on a Dirty Grid?

Why It Matters

Accurate, time- and place-specific emissions data helps consumers charge smarter, policymakers target decarbonization investments, and utilities optimize storage and renewables to maximize the emissions benefits of electrifying transport.

Summary

Electric vehicles remain cleaner than internal combustion cars over their lifetimes, but the carbon footprint of charging varies widely by location, time of day, season and how a grid sources and trades electricity. Electricity Maps provides real-time, regionally granular data showing that a kilowatt-hour in California, Quebec or France can be far less carbon-intensive than the same kWh in West Virginia, Alberta or Poland, and that intra-day shifts—driven by solar, wind and storage—can triple grid carbon intensity between midday and night. The platform highlights how battery storage and cross‑grid exchanges can lower emissions by shifting renewable output to peak demand hours. Ultimately, EV cleanliness is nuanced and depends on when and where charging occurs as grids evolve.

Original Description

Do electric vehicles still make sense on a dirty grid?

One of the most common myths about EVs is that they are only clean if the electricity grid is already clean. But the real answer is more interesting.

In this Mini Briefing, Julien Lavalley of Electricity Maps explains how the emissions behind EV charging vary by country, province, state, time of day, and electricity mix. Using real-world grid data, he shows why EVs are cleaner than combustion vehicles over their lifetime — and why charging time can still make a difference.

You’ll see examples from Canada, the United States, Alberta, Ontario, Quebec, British Columbia, California, and other regions, with a focus on carbon intensity, grid decarbonization, renewable energy, natural gas, hydro, nuclear, wind, solar, and battery storage.

Explore Electricity Maps here:https://www.electricitymaps.com/Live map:https://app.electricitymaps.com/map

Chapters

0:00 Can an EV Be Clean on a Dirty Grid?

1:07 What Electricity Maps Measures

1:43 EVs vs Combustion Over a Lifetime

2:33 What Grid Carbon Intensity Means

4:14 Why Emissions Change by Region and Time

5:42 Live Demo: California, Solar, and Battery Storage

8:19 Alberta’s Grid and Wind Variability

9:58 Canada Examples: Alberta vs Ontario

12:30 Best and Worst Charging Times

14:07 How Cleaner Grids Make EVs Cleaner

16:13 Key Takeaways

17:10 Vehicle-to-Grid and Future Potential

Keywords

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About EV SocietyEV Society is a Canadian non-profit organization helping drivers understand electric vehicles, charging, batteries, ownership, and the transition to cleaner transportation.