Episode 22: Varun Sivaram

On this podcast, Thomas Byrne, CEO of CleanCapital, sits down with Varun Sivaram, a thought leader in the clean energy space. This podcast discusses the bestseller’s new book “Taming the Sun”, which outlines the current clean energy landscape, and the advances needed to unleash it.

Besides being a writer, Varun Sivaram is a physicist and Chief Technology Officer at ReNew Power Ventures, a multibillion-dollar renewable energy firm. He is also a senior research scholar at Columbia University, a board member for the Stanford University Energy and Environment Institutes, and an editorial board member for the journal “Global Transitions”. Previously, Varun was a professor at Georgetown University and is a Rhodes and a Truman Scholar. Dr. Sivaram holds a degree from Stanford University and a Ph.D. from St. John’s College, Oxford University.

Transcript

Main Septic Line Clogged |top| May 2026

Few things strike fear into a homeowner’s heart quite like the sound of a toilet gurgling instead of flushing, or the sight of water seeping up around a basement floor drain. While a clogged sink is a minor nuisance, a blocked main septic line is a full-blown emergency.

If snaking doesn't work, or if you suspect grease, you can rent a hydro-jet from a tool rental center. This uses a high-pressure hose with a backward-facing nozzle that blasts water at 4,000 PSI to scour the pipe walls. This is far more effective than a snake for removing sludge and grease. main septic line clogged

If the clog is near the house, a standard toilet auger won't reach. You need a heavy-duty sewer auger (a "drain snake"). Feed the cable into the cleanout until you feel resistance. Crank the handle to break through the clog. Run a garden hose into the cleanout to see if water flows away. Few things strike fear into a homeowner’s heart

Pouring grease or oil down the kitchen sink is a death sentence for pipes. As hot grease cools, it hardens into a waxy, concrete-like layer along the pipe walls. Over years, this layer traps food particles and narrows the pipe until only a small hole—or none—remains. This uses a high-pressure hose with a backward-facing

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