Power Plays

Recorded Sunday 12th April. we look at three forces reshaping the battery industry: Sodium-ion as a new chemistry moving toward commercialization, a new infrastructure model enabling heavy transport electrification, and a reminder that capital intensity can bankrupt even promising solutions.1) Are Sodium Batteries Finally Ready for the Grid? - Inside Peak Energy's Sodium ion system:What is a sodium-ion battery, and how does it differ from traditional lithium-ion systems?Why is Peak Energy using sodium iron phosphate pyrophosphate (NFPP) cathodes and hard carbon anodes?How do sodium batteries compare with NMC and LFP on safety, supply chains, and lifetime cost?Why did the industry shift from NMC to LFP—and how does sodium extend that trend toward durability and affordability?Why are sodium batteries particularly suited to stationary grid storage despite lower energy density?How does passive cooling reduce equipment, maintenance, and system costs in large battery installations?Why do sodium batteries perform better in extreme cold conditions than lithium systems?How could abundant domestic sodium resources reshape long-term battery supply chains?Why might sodium be slightly more expensive today but cheaper over the full project life?2) Why Did Zenobē Buy Revolv — and What Does It Say About Electric Trucking?What is Zenobē’s model as a fleet electrification and charging infrastructure provider?Why is acquiring Revolv’s truck fleet and charging depots strategically important?How large are electric truck batteries—and why can they require 250–600 kWh per vehicle?Why has charging infrastructure, not battery technology, been the main constraint on truck electrification?How do high-power chargers change the economics of long-distance trucking?Why are buses easier to electrify than heavy trucks from an operational perspective?What role do subsidies and depot investment play in scaling electric fleets?Why has battery-electric trucking gained momentum while hydrogen alternatives have struggled?3) Ascend Elements Filed for Bankruptcy — What Actually Went Wrong?What is precursor cathode active material (pCAM), and why is it critical to battery manufacturing?How did Ascend attempt to build a circular battery supply chain through recycling?Why are battery materials plants among the most capital-intensive projects in the energy sector?How did falling lithium prices weaken recycling economics and cash flow?What happens when large facilities face delays, funding gaps, or canceled grants?How did Ascend’s strategy differ from competitors that diversified into energy storage or services?What does this case reveal about financing risk in emerging industrial supply chains?And more broadly: why do many clean energy bankruptcies stem from timing and capital structure rather than technology failure?

Recorded Sunday 29th March. Two very different stories highlight the complexity of the energy transition - from industrial decarbonisation in steel and cement to the increasingly political battle over offshore wind in the US and UK.Key topics:Why steel slag matters for low-carbon cementHow electric arc furnaces (EAFs) are reshaping industrial wasteHow Cocoon Carbon could decarbonise both steel and concreteTrump refunding offshore wind leases in favour of oil and gasThe UK rejecting Chinese turbine manufacturing investmentWhat this means for costs, jobs, and industrial strategyConnecting two hard-to-abate sectors: steel (7%) and cement (8%) together account for ~15% of global GHG emissions, yet both remain under-discussed due to their reliance on hard-to-abate process emissions.Cocoon Carbon is a UK based company developing technology to convert EAF steel slag into supplementary cementitious material (SCM) that can replace up to 30% of ordinary Portland cement.Historically, ~70% of steel came from blast furnaces, producing slag that could be reused as SCM in cement. However, as steel production shifts from blast furnaces and basic oxygen furnaces to direct reduced iron and EAFs - cutting emissions by 40–70% - the slag chemistry changes, making it unusable in cement in its raw form.Cocoon's technology can process this EAF steel slag while molten (~1,500°C), directly at the steel plant, into a form usable as SCM, restoring its value. With ~100–150 kg of slag produced per tonne of steel, this creates a major new source of low-carbon cement input.The economics are compelling: raw slag sells for ~$15–25 per tonne, while processed SCM reaches ~$80–120 per tonne (~5× uplift). This improves steel plant economics, reduces waste, and supports the shift to EAFs. The US is the first target market, where ~70% of steel is already EAF-based and regulations are performance-driven. Cocoon has raised $15m in a Series A round; its modular units can be installed in 6–9 months.In wind, the US story centres on Trump refunding ~$1bn in offshore wind lease payments to TotalEnergies to cancel a 4 GW project and redirect capital into oil and gas. The leases were part of a ~$5bn auction round, with the refund representing ~3% of project cost. This reflects a broader anti-wind stance and may increase costs in regions where offshore wind is cheaper than gas.Offshore wind also raises a structural question: could it replicate fossil fuel royalties? US oil and gas generated ~$6bn in royalties in 2024 (ongoing payments), whereas wind leases are typically upfront rather than recurring.In the UK, a £1.5bn Mingyang turbine factory (≈1,500 jobs) was rejected on security grounds. A smaller £200m investment from Vestas (~500 jobs) may proceed, depending on auction demand.The UK’s decision prioritises energy security but highlights a trade-off: without stronger negotiation, the country risks missing out on manufacturing, jobs, and long-term industrial leverage while remaining dependent on foreign developers.