Rosemary Barnes
@engwithrosie • 1,987 subscribers
Engineer | Consultant in energy transition technology | Renewables and sustainability expert | "Engineering with Rosie" YouTube channel
Videos
A 900 MW water battery in the Swiss Alps, built for €2B over 14 years, is operational. It uses two reservoirs at different elevations to store energy by pumping water uphill and generate power as it flows back down. It's a huge 20 GWh, enough to power 400,000 EVs.
Rosemary Barnes51,182 görüntüleme • 1 yıl önce
If every house in Australia turned on a toaster simultaneously, it'd add nearly half of the grid's average load, causing it to crash. Yet, no one worried about the electricity grid when electric toasters became widespread. So why do we still think that EVs will crash the grid?
Rosemary Barnes38,828 görüntüleme • 1 yıl önce
Is the energy transition really increasing mining needs? A typical petrol car burns 17,000 liters of fuel over its life, while an EV needs just 160 kg of metals in its battery—99% less mining. Even without battery recycling (and we will recycle), clean tech mining is far lower.
Rosemary Barnes18,308 görüntüleme • 1 yıl önce
Dunkelflaute - no wind, no sun for weeks - isn't an Australian problem. 42 years of weather data show widespread dips last hours or a day, never weeks. Winter monthly output has never been lower than 70% of average. Long duration energy storage? We'll need less than you'd think.
Rosemary Barnes14,906 görüntüleme • 1 yıl önce
Daha fazla içerik yok.