Renewables reached nearly 50% of global electricity capacity last year

Interpreting the “50% renewables capacity” figure

• Several comments stress that installed capacity is misleading for renewables because of low and location-dependent capacity factors (solar often ~10–25%, wind ~25–40%, nuclear ~88%).
• Critics argue nameplate MW overstates real contribution and doesn’t reflect timing vs demand or curtailment when renewables exceed load.
• Others reply that capacity is still a useful proxy for deployment momentum and “forward march of progress,” even if it doesn’t map linearly to annual TWh.

Generation share and trajectory

• Estimates from shared data: renewables (solar, wind, hydro) are around ~29% of global electricity generation, with clean generation (including nuclear) in the low-40% range and rising.
• Multiple links show solar PV growing exponentially, approaching ~1 TW/year of new capacity, with projections that solar could dominate electricity by the 2030s–2040s.
• Some emphasize that current enthusiasm is about trajectories, not current shares; solar and wind growth in 2025 reportedly met all net new global electricity demand.

Economics: solar, storage, vs fossil and nuclear

• Many argue solar + batteries are now cheapest for new generation in many regions, especially after gas price spikes; overprovisioning solar is considered rational because hardware is cheap.
• Counterpoints highlight storage cost, degradation, and the difficulty of covering multi-day “Dunkelflaute” events; no country yet has storage to run a mostly-solar grid for days.
• Debate over nuclear: one side cites high capital and refurbishment costs (EDF, new EPRs), nationalization, and difficulty competing when solar/wind push down prices.
• Opposing comments claim the French nuclear fleet remains profitable, provides very low CO₂/kWh, and that comparisons to Germany’s Energiewende costs favor nuclear; there are conflicting claims about EDF’s debt, bailout reasons, and export profitability.

Grid integration, backup, and China’s coal

• Consensus that intermittent renewables need backup: gas or coal peakers, hydro, nuclear, and growing battery fleets.
• Multiple comments describe China’s strategy as building a renewables-dominated grid backed by flexible coal, with new coal partly replacing old plants and serving as reliability insurance during rapid demand growth.

Decentralization and demand-side changes

• Some foresee more households and industry going partially or fully off-grid with rooftop solar and batteries, which could undermine traditional utility power and regulatory leverage.
• Discussion of demand response (e.g., shifting cooling or industrial loads) alongside storage and EVs as key tools to integrate high shares of renewables.