Home · Fusion vs Solar+Storage
Comparison

Fusion vs solar + storage for firm power.

Solar and batteries are the cheapest new energy — but they're variable and duration-limited. For 24/7 firm load like AI data centers, fusion is designed to be the always-on complement.

Firm power for AI →See the architecture →
Side by side

Cheap and variable vs firm and dense.

Solar + storage
Variable renewables
  • Lowest-cost new generation; scales fast
  • Weather- and season-dependent; batteries cover hours, not weeks
  • Large land and transmission footprint for firm output
  • Ideal for daytime and short-duration balancing
Kronos
Kronos fusion
  • Firm, dispatchable, weather-independent — runs day and night
  • Compact, sited near load — eases transmission
  • Carbon-free and low-neutron
  • Built for 24/7 baseload: AI, industry, defense

This isn't either/or. A clean grid needs both — renewables for cheap energy, fusion for firm power.

Verify it yourself

Open by design.

Live simulation
Run the engines
Open →
Open data
Zenodo · CC BY 4.0
Open →
How it works
The two machines
Open →
Learn (Fusion 101)
Go deeper
Open →
The AI power crunch →Firm power for the grid →Fusion for AI compute →
Go deeper

Firm power for AI & the grid.

See where fusion fits the load.

Firm power for AI →
Conceptual design and simulation study; the integrated Kronos machines are not yet built, and certain results are requirement-class. No financial figures are published on this site.