Uploaded December 2025 | Updated September 2026, 2 weeks ago
The rapid growth of intermittent renewable energy like wind and solar has created a global energy crisis, threatening grid stability with mass blackouts, as evidenced by California's 2020 heatwave outages. The critical challenge is the "4-hour problem": current lithium-ion batteries cannot store power for long enough. This documentary follows the engineers and inventors leading a revolution in long-duration energy storage, developing massive mechanical batteries that are cheaper than fossil fuels and can provide green power for days or even weeks.
Welcome to Progress - the home of engineering marvels, space exploration and history's greatest inventions. From rockets that took us to the stars to the world's most advanced military vessels, we'll be bringing you world-class documentaries every week.
You can now become a History Hit member right here on YouTube! Join for access to a new exclusive documentary every week, and access to over 160+ of our documentaries presented by world renowned historians like Dan Snow, Eleanor Janega, Tristan Hughes, Mary Beard, Matt Lewis and more.
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Progress is part of the History Hit Network. For any queries, please contact owned-enquiries@littledotstudios.com.
#progress #documentary #technology
The rapid growth of intermittent renewable energy like wind and solar has created a global energy crisis, threatening grid stability with mass blackouts, as evidenced by California's 2020 heatwave outages. The critical challenge is the "4-hour problem": current lithium-ion batteries cannot store power for long enough. This documentary follows the engineers and inventors leading a revolution in long-duration energy storage, developing massive mechanical batteries that are cheaper than fossil fuels and can provide green power for days or even weeks.
Welcome to Progress - the home of engineering marvels, space exploration and history's greatest inventions. From rockets that took us to the stars to the world's most advanced military vessels, we'll be bringing you world-class documentaries every week.
You can now become a History Hit member right here on YouTube! Join for access to a new exclusive documentary every week, and access to over 160+ of our documentaries presented by world renowned historians like Dan Snow, Eleanor Janega, Tristan Hughes, Mary Beard, Matt Lewis and more.
Get an exclusive release every week by signing up here: bit.ly/4pyExyn
Progress is part of the History Hit Network. For any queries, please contact owned-enquiries@littledotstudios.com.
#progress #documentary #technology
