Why Build Nuclear When We Have Solar?

I Asked If Solar Could Power California… and It Got Complicated What started as a simple question turned into a full-blown debate: If solar panels and batteries are getting so good… why does California still need nuclear energy? In this episode, we break down what actually keeps the lights on — beyond headlines, hot takes, and LinkedIn comment wars. What You’ll Learn Why “more solar” doesn’t automatically solve the problem Solar energy is powerful — but it only works when the sun is shining. Electricity systems need to work all the time, not just during ideal conditions. The difference between dispatchable and weather-dependent power Not all energy sources behave the same way. Dispatchable power = can be turned on whenever needed Solar & wind = depend on weather and time of day This distinction is at the heart of how power grids are designed. Why batteries help… but don’t solve everything Batteries can store energy for hours — not days or weeks. Scaling them to support an entire grid would require: massive infrastructure large amounts of materials and systems we haven’t fully built yet The “last 10% problem” Getting to ~80–90% clean energy is achievable. But the final stretch to 100%? That’s where: costs rise sharply reliability becomes harder and system complexity increases Capacity factor (explained simply) Not all energy sources produce power at the same rate over time. Nuclear: ~90% uptime Solar: ~20–25% depending on location This affects how much infrastructure you need to meet demand. What is grid inertia? Power grids rely on physical stability — not just energy supply. Traditional plants (like nuclear and hydro): use large spinning turbines help stabilize frequency and flow Solar and batteries don’t naturally provide this, which means engineers must recreate it in other ways. Nuclear’s role in a clean energy system Nuclear isn’t replacing renewables. It provides: consistent, 24/7 power high energy output from a small footprint stability for the grid when other sources fluctuate Special Thanks Thank you to everyone who contributed to the original discussion! Find the post here: https://www.linkedin.com/posts/danielleallen-nuclear_in-the-most-civil-manner-possible-could-activity-7438758963921248256-o8EE 🎙️ About Naked Nuclear Naked Nuclear breaks down complex nuclear energy topics into clear, honest conversations — helping listeners understand not just the technology, but the systems and decisions shaping our energy future. Further Reading (Direct Links) Grid Inertia (the thing nobody explains well) IEEE Smart Grid (your reference): https://smartgrid.ieee.org/bulletins/november-2020/brief-understanding-of-inertia-in-the-smart-grid-its-challenges-and-solutions Grid Reliability & Clean Energy Systems International Energy Agency – Net Zero by 2050 https://www.iea.org/reports/net-zero-by-2050 International Energy Agency – Electricity Market Reporthttps://www.iea.org/reports/electricity-market-report Capacity Factors & Real-World Grid Data U.S. Energy Information Administration – Capacity Factors Explained https://www.eia.gov/todayinenergy/detail.php?id=10191 U.S. Energy Information Administration – Electricity Data Browser https://www.eia.gov/electricity/data/browser/ System Costs & “Last 10% Problem” OECD Nuclear Energy Agency – The Full Costs of Electricity Provisionhttps://www.oecd-nea.org/jcms/pl_51110/the-full-costs-of-electricity-provision OECD Nuclear Energy Agency – System Costs in Decarbonised Power Systemshttps://www.oecd-nea.org/jcms/pl_15000/system-costs-of-electricity Batteries & Energy Storage International Energy Agency – Energy Storage Tracking https://www.iea.org/reports/energy-storage Nuclear Performance World Nuclear Association – Nuclear Power Performancehttps://world-nuclear.org/information-library/current-and-future-generation/nuclear-power-in-the-world-today.aspx