Resources for Policymakers and Investors
The four climate technologies covered on the hub page — sodium-ion batteries, direct air capture, offshore wind, and advanced geothermal — each require different policy frameworks and investment strategies. This resource guide breaks down where capital is flowing, what policies are working, and which markets are ready for deployment.
Sodium-Ion Battery Supply Chain
The sodium-ion supply chain is fundamentally simpler than lithium-ion. Sodium doesn't require mining in politically concentrated regions — it's available from seawater, brine deposits, and salt mines across every continent. This eliminates the geopolitical risk that has dominated lithium markets since 2022.
Key supply chain nodes:
- Cathode materials: Layered metal oxides (LMO) — manganese, iron, nickel without cobalt. China produces ~85% of global sodium-ion cells, with CATL, BYD, HiNa, and Faradion as the primary OEMs.
- Anode materials: Hard carbon from biomass precursors (coconut shells, wood, pitch). This is cheaper and more sustainable than graphite, which requires high-temperature processing at 2,800°C+.
- Electrolyte: Sodium salts dissolved in organic solvents — largely commodity chemicals with minimal supply chain risk.
- Current collectors: Aluminum foil on both sides (vs. copper anode current collector in lithium-ion). This alone reduces material costs by ~15%.
DAC Economics and Policy Incentives
DAC economics are now entirely policy-dependent. The US 45Q tax credit ($180/ton for durable geological storage, $85/ton for EOR) is the single most important driver of DAC investment globally.
Key incentive programs:
- US 45Q Tax Credit: $180/ton for permanent storage (climate-critical), $85/ton for EOR. Available through 2034.
- EU Carbon Removal Certification: Launched 2024, sets verification standards for carbon removal credits. Not yet a subsidy mechanism but creates market credibility.
- UK Contract for Difference (CfD) Round 5: First allocation for DAC in 2026, targeting £90/MWh equivalent support.
- Saudi Arabia's Green hydrogen subsidies: NEOM program provides $170M/year in direct funding plus land grants.
Without these incentives, the average DAC cost remains around $250/ton — above what most corporate carbon credit buyers will pay. With 45Q at full utilization, effective cost drops to ~$70/ton for developers.
Offshore Wind Investment Landscape
Offshore wind has become one of the largest private capital flows in the energy transition. Global investment reached $142 billion in 2025, with projections of $200B+/year by 2027.
Top investment regions:
- China: 60% of global installations. State-backed developers dominate; auction prices hit €39/MWh in Hainan (2025).
- Europe: UK, Netherlands, and Denmark lead in per-capita deployment. Auction mechanisms produce wide price variation (£35–£65/MWh).
- USA: IRA tax credits ($2.50/kW ITC for offshore) are driving a construction pipeline of 25+ GW by 2030.
Geothermal Energy Investment Metrics
Geothermal is the most undercapitalized of the four breakthrough technologies but also the one with the highest optionality — it can generate baseload power anywhere.
- Total addressable market: $1.2 trillion by 2040 (BloombergNEF estimate)
- Current annual investment: ~$8 billion (primarily in geothermal-hotspot regions: Iceland, Kenya, Philippines, USA West)
- Key risk: Exploration drilling carries 30–50% failure rate. FUSE's $788M is specifically de-risking exploration through shared drilling pools and AI-guided site selection.
For more on the economics of climate technology investment, see our technology comparison guide and further reading on carbon capture scaling.