EU countries already hitting some of their sustainable energy targets for 2030

Original Article ↗ Hacker News Discussion ↗

Several EU countries are on track to meet or exceed their 2030 sustainable energy goals, largely because solar and wind have become cheaper than new fossil-fuel generation in many markets. Commenters debate whether Western decarbonization will meaningfully reduce global CO₂ emissions if developing countries continue to grow fossil use, and whether falling renewable costs, Chinese manufacturing, and technology transfer can change that trajectory. The exchange also contrasts renewables with nuclear power and natural gas for grid reliability, highlighting storage, transmission, and pricing as the next major challenges once renewable penetration is high.

Global Emissions and “Why Bother?”

  • Some argue Western CO₂ cuts are futile if Africa and Asia increase fossil use and lack strong targets.
  • Others counter that:
    • Many non‑Western countries do have climate pledges (e.g., China, India).
    • Rich countries caused disproportionate historical emissions and still lead per‑capita.
    • Moral responsibility and co‑benefits (air quality, energy security) justify acting regardless.

Cost and Competitiveness of Renewables

  • One camp claims renewables (especially with batteries, 24/7) are still far more expensive than gas/coal.
  • Another side cites:
    • Rapidly falling solar and battery prices, with solar module costs down ~24× over 15 years.
    • LCOE data showing onshore wind and PV (sometimes with storage) approaching or beating fossil fuels for new capacity.
    • Cases where PV is already cheaper than fuel alone for fossil plants.
  • Dispute persists over “all‑in” 24/7 costs, especially when storage is required.

Developing Countries and Technology Transfer

  • Skeptics doubt poor countries will choose green options over cheap fossil fuels.
  • Others argue:
    • Many poor regions lack reliable 24/7 power now, so the comparison is different.
    • Falling capex, distributed solar, and efficiency gains (LEDs, better appliances) can leapfrog fossil-heavy paths, similar to skipping landlines with mobile phones.
    • Western demand helps scale manufacturing and lower global prices.

Grids, Storage, and Market Dynamics

  • High solar/wind penetration pushes wholesale prices low or negative at times, threatening coal and nuclear economics.
  • Critics worry about expensive “24x365” power and ongoing subsidies for coal in places like Australia.
  • Others point to:
    • Utility-scale and home batteries already reducing peak prices and paying back quickly in some markets.
    • Alternative storage (e.g., pumped hydro) and demand flexibility.
    • Rooftop solar + batteries as a way to bypass high retail prices.

Nuclear vs Renewables

  • Nuclear is cited as a proven low‑carbon backbone (France, others), with some saying existing plants are the cheapest stable power.
  • Counterpoints:
    • New builds in some countries show huge delays, cost overruns, and high €/MWh.
    • Large reactors are poorly suited to frequent ramping in a renewables‑heavy grid.
    • Extending life of existing plants helps, but nuclear struggles to compete with falling renewable costs.

Policy, Politics, and Case Studies

  • UK: onshore wind and some solar blocked by planning rules and “landscape” concerns; grid connections for renewables face NIMBY opposition.
  • South Australia: highlighted as an example rapidly approaching net 100% renewables (mainly wind + solar + batteries) with no local coal.
  • Spain: cited as enjoying very low wholesale prices during high wind/solar output, even exporting to France.
  • France: currently burning more gas due to nuclear maintenance backlog; performance varies over time.

Metrics, Targets, and EU Progress

  • Some confusion over the paper’s methodology: countries close to 2030 targets (e.g., Sweden, Denmark, Estonia, Austria) aren’t necessarily those with the fastest recent improvement; they often started ahead.
  • Debate over using “share of renewables” vs “low‑carbon electricity” as the right metric, given that burning biomass can count as renewable.

Nature‑Based Solutions and Geoengineering

  • One commenter dismisses reforestation as quantitatively insufficient vs annual emissions; another replies it need not cover 100% to be worthwhile.
  • Ideas like cooling coastal waters with surplus renewable power are floated but not resolved.