TerraPower

Does the core business genuinely avoid or reduce emissions, or build climate resilience? Share of revenue that is actually 'green'. Fossil-dependent models score low.

The Natrium reactor is a 345 MW sodium fast reactor with molten-salt storage boosting output to 500 MW; it is carbon-free, dispatchable, and being built adjacent to a retiring coal plant in a state that generates over 80% of electricity from fossil fuels — making the displacement value genuine and potentially significant, but entirely prospective as no power has been produced.

Credible, science-based targets (SBTi), a real net-zero plan with progress to date, and CDP disclosure — not just a dated press release.

TerraPower has published no SBTi-validated targets, no CDP disclosure, and no independently verified net-zero roadmap for its own operations; its climate narrative is entirely product-forward (the reactor IS the climate contribution) with no quantified operational emissions targets found in any public filing.

Operational footprint, labour and social practices, and governance quality across the company's own operations and supply chain.

TerraPower is a private, pre-revenue company with no published GRI, SASB, or TCFD-aligned sustainability report; governance quality benefits from high-profile institutional oversight and DOE milestone accountability, but labor practices, supply-chain standards, and community impact data are not publicly disclosed at any verifiable level.

Quality of disclosure, independent third-party verification, and how much hard data backs the company's claims.

As a private company TerraPower publishes no audited sustainability report, no CDP response, and no third-party-verified emissions inventory; project-level disclosures flow primarily through DOE press releases and NRC filings rather than corporate ESG frameworks, leaving investors with very limited independently verifiable data.

Controversies, litigation, pollution, fossil-fuel lobbying, conflict-zone involvement and governance scandals. Higher means cleaner.

The most material controversy is a multi-year delay caused by TerraPower's original plan to source HALEU fuel exclusively from Russia; the Ukraine war severed that supply chain, pushing the completion date from 2028 to ~2030-2031, representing a 5-7 year slip from DOE's original target — a supply-chain due-diligence failure, though not an ethical scandal per se. No environmental violations, governance scandals, or fossil-lobbying links have been publicly identified.