The 3,000-Year-Old Battery Replacing Industrial Gas | Cache Energy

This limestone battery can achieve 100+ hour heat storage without lithium and zero standby losses.Industrial heat is a $1T+ problem, but most solutions ignore storage, especially those using ancient chemistry.Arpit Dwivedi is the founder and CEO of Cache Energy, building thermal storage systems for industrial decarbonization.Cache uses calcium oxide chemistry to store and release heat, targeting sub-1,000°F processes that represent ~75% of global industrial demand, with modular systems designed for rapid deployment and low cost.Here’s what we discussed:Unit economics anchored in materials, not breakthroughs – Limestone feedstock at <$500/ton, 95% off-the-shelf hardware, and a small proprietary binder that enables pellet durability and repeat cycling without degradation typical of lime powdersOperational performance that mimics baseload fuel – 100+ hour discharge with effectively zero standby losses over 6–9 months, allowing customers to arbitrage cheap off-peak electricity into constant, gas-like heat outputDeployment speed as wedge – Containerized 2MW systems installed and operational within hours (e.g., University of Minnesota), eliminating long EPC timelines and specialized on-site laborProven industrial ROI, not pilots – Single-process retrofit at a Fortune 500 Midwest manufacturer reduced natural gas consumption ~98%, with expansion to additional plants based on measured performanceFinancing unlocks adoption – Leasing model with flat monthly pricing, uptime guarantees, and full O&M removes capex friction while enabling transition to $150–200M project finance-backed scaling--Join our confidential CEO community.Private CEO group for VC/PE-backed climate tech founders navigating capital, strategy, and scale. Capped at 45 CEOs. See if you're a fit → entrepreneursforimpact.comJoin 40,000 professionals who get our newsletter.Climate tech finance, strategy, leadership. 2-min read. → entrepreneursforimpact.substack.comLeave a podcast review.If you got value, take 30 seconds and do the community a favor. It helps push more capital and talent toward scalable climate solutions.

When expansion feels like productivity, climate CEOs often drift into adjacent markets, new products, and endless “opportunities” that quietly dilute execution.This episode breaks down three strategic traps: timid visions, distraction disguised as growth, and rebuilding too late. Here’s what we discussed:Manifestos vs. marketing decks – Why some climate companies raise billions by selling an inevitable future, not just a product roadmap or pilot projectOpportunity overload – How “adjacencies” like new geographies, EV charging, or development capital can become strategic debt instead of growthFocus as competitive advantage – Why the best operators often win by doing fewer things deeper while competitors chase every inbound requestWhen to rebuild from scratch – Signals that your startup is compounding organizational debt instead of improving actual outputThe 80/95 rule – Why “80% good in 3 months” often beats “95% perfect in 12” in hardtech and climate markets where timing matters--Join our confidential CEO community.Private CEO group for VC/PE-backed climate tech founders navigating capital, strategy, and scale. Capped at 45 CEOs. See if you're a fit → entrepreneursforimpact.comJoin 40,000 professionals who get our newsletter.Climate tech finance, strategy, leadership. 2-min read. → entrepreneursforimpact.substack.comLeave a podcast review.If you got value, take 30 seconds and do the community a favor. It helps push more capital and talent toward scalable climate solutions.

Biomass waste is one of the largest unmanaged carbon flows, yet most climate solutions ignore it. This founder is turning landfills into carbon sinks using decentralized pyrolysis and biochar.Andrew Jones is the founder and CEO of Carba, a waste-to-value company converting biomass into permanent carbon removal. He studied catalytic fast pyrolysis and earned a PhD in chemical engineering from the University of California, Berkeley.Carba builds modular, decentralized systems that process biomass waste near aggregation points, producing biochar for landfill burial, methane reduction, and potential industrial uses.Here’s what we discussed:Site strategy that actually works – Targeting 10k–100k ton/year biomass hubs co-located with landfills to eliminate transport cost and preserve unit economicsLandfill use case, not theory – Biochar used as daily cover to (1) store carbon underground, (2) stimulate methanotrophs that oxidize methane, and (3) adsorb PFAS and other contaminantsReactor advantage – Custom molten-salt pyrolysis system vs rotary kilns, enabling tighter temperature control, higher carbon yield, and more consistent biochar quality at throughputCarbon permanence bet – Converting cellulose/lignin into stable aromatic carbon structures that resist microbial decay, especially in anaerobic landfill conditionsRevenue stack reality – Tipping fees exist but small; real upside is durable carbon credits, with optionality in steel, concrete, asphalt, tires, and filtration depending on local demand--Join our confidential CEO community.Private CEO group for VC/PE-backed climate tech founders navigating capital, strategy, and scale. Capped at 45 CEOs. See if you're a fit → entrepreneursforimpact.comJoin 40,000 professionals who get our newsletter.Climate tech finance, strategy, leadership. 2-min read. → entrepreneursforimpact.substack.comLeave a podcast review.If you got value, take 30 seconds and do the community a favor. It helps push more capital and talent toward scalable climate solutions.

Vendor Financing Isn’t Free Money – Extending supplier payment terms can improve runway and reduce dilution, but concentrated climate supply chains create hidden dependency risk when critical vendors effectively become reluctant lenders.Working Capital Can Distort Reality – Better short-term cash metrics may hide structural fragility if supplier leverage, component concentration, or financing assumptions shift during tougher fundraising markets.The Leadership Bias That Damages Teams – Founders often misread underperformance as character failure instead of contextual pressure, creating avoidable trust breakdowns and weaker decision-making cultures.Empathy Still Requires Accountability – Understanding context matters, but repeatedly tolerating poor execution can quietly transfer the cost of one person’s struggles onto the broader organization.Why Great Operators Ask Better Questions – The strongest long-term partnerships in climate tech often come from listening well, speaking less, and focusing on genuine curiosity over transactional networking.--Join our confidential communityPrivate CEO group for VC/PE-backed climate tech founders navigating capital, strategy, and scale. Capped at 45 CEOs. See if you're a fit → entrepreneursforimpact.comNewsletterClimate tech finance, strategy, leadership. 2-min read. → entrepreneursforimpact.substack.comLeave a podcast reviewIf you got value, take 30 seconds and do the community a favor. It helps push more capital and talent toward scalable climate solutions.

This 6x company founder and CEO explains how to structure smarter climate tech investment rounds and actually get renewable energy projects financed.Peter Davidson is CEO and founder of Aligned Climate Capital, a $2B AUM multi-strategy firm investing across venture and infrastructure. He previously led the U.S. Department of Energy Loan Programs Office and has founded or led six companies.Aligned focuses exclusively on low-carbon investments, with a core thesis that strong returns, not concessionary capital, will scale the energy transition.Here’s what we discussed:Capital strategy most founders miss – Second round should often be debt (bank, venture debt, DOE, green banks, vendor financing), not equity, to reduce dilution and extend runwayValuation is overrated – Partner quality, capital stack design, and working capital buffer matter more than headline priceOption pool trap – Negotiate “plussed up” pools to maintain ~5–10% through future rounds instead of getting diluted to zeroInfrastructure playbook – Buy NTP-ready community solar (3–10MW), build in 6–9 months, return ~70% capital via tax credits in ~3 years, then sell aggregated assets in years 6–7Market reality check – VC is constrained (few exits, fewer LP commitments), so founders must cut costs, accept lower valuations, or rethink viability--Join our confidential CEO communityPrivate CEO group for VC/PE-backed climate tech founders navigating capital, strategy, and scale. Capped at 45 CEOs. See if you're a fit → entrepreneursforimpact.comNewsletterClimate tech finance, strategy, leadership. 2-min read. → entrepreneursforimpact.substack.comLeave a podcast reviewIf you got value, take 30 seconds and do the community a favor. It helps push more capital and talent toward scalable climate solutions.

Three decisions that determine if climate tech founders scale or stall: Customer focus, sustainable intensity, and information diet all compound into capital efficiency and judgment.Antelope vs mice – Why chasing small, fast customers can accelerate learning but trap you in low-value revenue, while large customers require patience but define the businessGTM timing – Matching customer type to runway and product maturity, not just who says yes firstStagnation vs safety – Why constant urgency degrades judgment and burns teams, especially in capital-intensive climate startupsSustainable intensity – Protecting thinking time as a core CEO function, not a luxury, to avoid reactive decision-makingNews vs history – How overconsuming short-term signals creates bias, while historical pattern recognition sharpens long-term strategy--Join: Confidential CEO communityPrivate CEO group for VC/PE-backed climate tech founders navigating capital, strategy, and scale. Capped at 45 CEOs. → entrepreneursforimpact.comNewsletter: 2-min readClimate tech finance, strategy, leadership. → entrepreneursforimpact.substack.comYour help: Leave a podcast reviewIf you got value, take 30 seconds and do the community a favor. It helps push more capital and talent toward scalable climate solutions.

Scaling carbon removal through existing supply chains, community-aligned infrastructure, and signing up JPMorgan in the process.–Barclay Rogers is the founder and CEO of Graphyte, focused on low-cost, permanent carbon removal using biomass burial. Graphyte converts agricultural waste into dense carbon blocks and stores them underground, targeting sub-$100/ton durable carbon removal with high scalability.They’re backed by leading climate investors such as Prelude Ventures, Carbon Direct Capital, Breakthrough Energy Ventures, and Overture.Here’s what we discussed:Focus on execution, not recognition – Barclay said Graphyte does not chase awards; they focus on building a good business and “the scoreboard takes care of itself.” In his framing, recognition follows disciplined execution, not the other way around.Use existing systems instead of reinventing everything – Graphyte’s model borrows from agriculture, timber, mining, and landfill engineering rather than trying to invent an entirely new stack from scratch. For CEOs, that is a reminder that practical innovation often comes from recombining proven systems.Build where supply chains already exist – A key part of the company’s logic is plugging into waste biomass streams that already exist at scale, rather than creating a brand-new supply chain. That lowers cost, complexity, and time to scale.Community alignment is a strategic advantage – Their approach of turning old quarries into parks or other public-benefit assets is not just goodwill; it helps create local support and makes projects easier to advance. CEOs should hear this as: stakeholder trust can be part of the operating model.Your unique background can become a moat – Barclay’s mix of engineering and legal experience clearly shaped the company’s design, including permanence and land-use strategy. His point was that category-defining companies often come from founders combining multiple strengths, not just going deep in one lane.Start with what works now, not only with what sounds futuristic – He made a strong case that many carbon removal solutions delivering today are biomass-based, even if more attention goes to flashier technologies. For CEOs, the broader lesson is to distinguish between what is compelling in theory and what is actually delivering in the market.Stress management is leadership infrastructure – Barclay’s routine — exercise, cold plunge, family time, meditation, and delaying phone use — reflects a serious view that managing pressure is part of the CEO job. His message was clear: as responsibility grows, personal systems matter more, not less.--Join our confidential communityPrivate CEO group for VC/PE-backed climate tech founders navigating capital, strategy, and scale. Capped at 45 CEOs. → entrepreneursforimpact.comNewsletter2-min read. Climate tech finance, strategy, leadership. → entrepreneursforimpact.substack.comLeave a podcast reviewIf you got value, take 30 seconds and do the community a favor. It helps push more capital and talent toward scalable climate solutions.

Your data center project clears IRR. Investors nod. But it still doesn’t get built.In this episode, we break down decisions shaping climate CEOs right now:IRR vs. MCC — Affordability, not returns, is now a gating metric in project finance for data centersCost to ratepayer — Higher bills signal credit risk, regulatory friction, and slower time to cash flowCulture types — "Commitment cultures" outperform via speed, trust, and fewer fatal errorsLeadership calibration — Inject realism in good times, optimism in bad (a la Bill Gurley)This is about what actually gets financed, how teams execute faster, and how CEOs avoid unforced errors.--Work with me (EFI)Private CEO group (capped at 50) for climate tech founders navigating capital, strategy, and scale. entrepreneursforimpact.comNewsletter (Climate CEOs)Read by 40,000 climate operators and investors annually. entrepreneursforimpact.substack.comLeave a reviewIf you got value, take 30 seconds and do the community a favor. It helps push more capital and talent toward scalable climate solutions.

Did I get your attention? Bruce Anderson hopes so.He is the founder and CEO of 247Solar, an MIT-linked spinout, and has worked in solar for more than four decades. He completed his MIT master’s thesis on solar energy in 1973 and later authored early solar books, including The Solar Home Book.247Solar is a zero-carbon technology company focused on modular concentrated solar systems that provide round-the-clock clean power and industrial-grade heat using thermal storage and factory-produced components.Here are some of his insights from the podcast:Don’t claim 24/7 if you can’t handle intermittency. Baseload is not just PV + batteries. If your system fails when the sun disappears and storage runs out, buyers will see through it.Keep the magic narrow. Buy the rest off the shelf. Reinventing every component is not genius; it is an expensive death march.Pick a beachhead, not a buffet. Start with customers who feel the pain most and need exactly what you built, not everyone with an energy bill.Customers buy risk reduction, not elegance. Reliability, fallback options, modularity, and financing matter more than how clever your tech sounds. Even if you went to MIT.Headcount is not a flex. More people can mean more burn, not more progress. Save the bragging for revenue and staying alive.--Work with mePrivate CEO group for VC/PE-backed climate tech founders navigating capital, strategy, and scale. Capped at 45 CEOs. → entrepreneursforimpact.comNewsletter2 insights, 2 minutes. Climate tech finance, strategy, leadership. → entrepreneursforimpact.substack.comLeave a reviewIf you got value, take 30 seconds and do the community a favor. It helps push more capital and talent toward scalable climate solutions.

When will customers overpay for power? When delay costs them billions of dollars. AI demand is rewriting energy economics faster than regulators can react.This episode draws from real operator conversations across utilities, AI infrastructure, and venture-backed climate companies.We talked about:The “watt-bit spread” - Why a single electron today can be worth billions more than the same electron later for AI companies Speed vs perfection - Where customers will accept an 80% solution now instead of waiting for a perfect oneRadical candor gap - Most CEOs think they challenge directly but default to avoidance or aggressionAutonomy drift - How high-performing teams quietly slide from ownership into neglect without founder attentionPricing power - Identifying customers with extreme urgency and low price sensitivity to accelerate revenue--Work with me (EFI)Private CEO group (capped at 50) for climate tech founders navigating capital, strategy, and scale. entrepreneursforimpact.comNewsletter (Climate CEOs)Read by 40,000 climate operators and investors annually. entrepreneursforimpact.substack.comLeave a reviewIf you got value, take 30 seconds and do the community a favor. It helps push more capital and talent toward scalable climate solutions.