Milkywire
Milkywire is a Stockholm-based impact firm founded in 2018 that advises enterprises on climate strategy, procures durable carbon removal through a vetted catalog of 40+ suppliers, and operates the Climate Transformation Fund — deploying corporate donations across nature, decarbonization, and CDR projects.
- Company typePrivate
- Founded2018
- HeadquartersStockholm, Sweden
- Headcount11–50
- GTM typeB2B and B2C
- OfferingSoftware
What Milkywire does
Milkywire is a Stockholm-based impact firm founded in 2018 that helps enterprises deliver on climate and nature targets through a combination of advisory services, carbon dioxide removal (CDR) procurement, and structured financing vehicles. Its core platform comprises a vetted CDR Catalog spanning 40+ suppliers across 12 removal methods (biochar, BioCCS, DAC, enhanced rock weathering, mineralization, biomass storage, and others), developed through 5+ years and 600+ proposal reviews, alongside the Climate Transformation Fund (CTF), established in 2021 with Klarna as founding donor, which has deployed $17 million across roughly 70 projects covering durable carbon removal, nature protection and restoration, and decarbonization. Complementary offerings include the Nature Transformation Fund, Regenerative Textiles advisory, internal carbon fee and beyond-value-chain mitigation (BVCM) frameworks aligned with SBTi guidance, bespoke enterprise programs, and a consumer contribution platform plus enterprise APIs.
The firm monetizes through multiple streams: a 10% transaction fee on consumer contributions; quote-based corporate advisory and bespoke climate programs (annual or multi-year); service fees on CDR procurement and catalytic pre-purchases for enterprise buyers (e.g., a $5 million Salesforce collaboration covering 12,500+ tonnes across 19 suppliers and 15 countries); and API licensing to partners embedding impact-giving flows into their own products. Go-to-market is hybrid: sales-led enterprise engagement for CTF participation, CDR procurement, and advisory work; community-led open calls for proposals to source CDR suppliers and NGO implementers; and a content-driven marketing engine built around an extensive white-paper library, webinars, and thought leadership (with co-authored work alongside WWF Denmark).
Milkywire AB is a private Swedish limited company registered in Stockholm (org ID 559156-8018), with 11-50 employees and no disclosed parent, investor backing, or revenue figures. Donations are processed through the WRLD Foundation (Sweden and US 501(c)(3)). The company is led by founder and CEO Nina Siemiatkowski, with a leadership team including a Chief Impact Officer (Anna Samuelsson), Head of Climate Strategy & CDR (Robert Höglund), and a Senior Impact Manager (Aidan Preston, Ph.D.). Operational evidence — including 2025-2026 product launches, active open calls, and ongoing enterprise engagements — indicates an actively operating business.
Milkywire firmographics
Firmographics- Name
- Milkywire
- Legal name
- Milkywire AB
- Website
- https://milkywire.com
- Company type
- Private
- Founded year
- 2018
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Milkywire is a Stockholm-based impact firm founded in 2018 that advises enterprises on climate strategy, procures durable carbon removal through a vetted catalog of 40+ suppliers, and operates the Climate Transformation Fund — deploying corporate donations across nature, decarbonization, and CDR projects.
- Ownership category
- akta.pro rank
Milkywire industry classification
Industry- Product category
- Climate Technology Platform
- NAICS
- Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (518210)
- SIC
- Services-Computer Programming, Data Processing, Etc. (7370)
- akta.pro primary industry
- Offsets & Carbon Removal Procurement Strategy (portfolio design, quality screening) (EUABAKAL)
- akta.pro secondary industries
- Climate Governance, Operating Model & Internal Carbon Pricing Design (EUABAKAF), Climate Finance Strategy (CapEx planning, green finance, incentives & grants) (EUABAKAG)
Keywords
Where Milkywire is headquartered
LocationHeadquarters
- HQ city
- Stockholm
- HQ country
- Sweden
- HQ region
- Europe
Offices1 record
Markets served
Milkywire business model
Business model- GTM type
- B2B and B2C
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure
Revenue model
- Platform Transaction Fees: Milkywire retains 10% of consumer contributions made through its platform to cover transaction processing and platform development costs. The platform enables companies and individuals to make monetary contributions to curated Impact Funds.
- Climate Advisory and Consulting Services: End-to-end advisory services including strategy design, carbon pricing framework implementation, CDR procurement advisory, project due diligence, and capacity building for corporate climate programs.
- CDR Procurement and Catalytic Purchasing: Procurement of durable carbon removal on behalf of corporate clients, including catalytic pre-purchases to accelerate early-stage CDR technologies. Revenue generated through service fees on CDR procurement for enterprise buyers.
- API and Integration Licensing: Licensing of Milkywire's APIs to enterprise partners enabling integration of impact giving into their own platforms. Monthly aggregate payment settlement for API-based contribution flows.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Transaction based/ take rate | Pay-as-you-go | Consumer Contributions - 10% Platform Fee |
| Other | Multi-year contract | CDR Supplier Grants - Category A: Novel Carbon Removal |
| Other | Multi-year contract | CDR Supplier Grants - Category B: Scale-up and De-risking |
| Other | Annual | Climate Transformation Fund Grants - Nature and Decarbonization |
| Other | One time/ perpetual license | Klarna Climate Heroes Award Grant |
| Subscription | Annual | Corporate Advisory and Bespoke Climate Programs |
Go-to-market motion2 records
Distribution channels5 records
Marketing channels7 records
Milkywire product offering
Product offeringCore offering
Milkywire operates a climate action platform that curates and channels funding toward high-impact climate projects, runs corporate programs such as the Climate Transformation Fund and Salesforce-backed carbon dioxide removal (CDR) pre-purchases, and exposes its project data via an API for integration into partner workflows. The platform serves both organisations running sustainability/carbon programs and individuals supporting climate causes through fundraising and donations.
Product overview
Milkywire is an impact firm offering a comprehensive suite of climate and nature solutions through its platform. The core offering includes Carbon Removal (with procurement and advisory services plus a catalog of vetted CDR projects), the Climate Transformation Fund (established 2021 for corporate BVCM), and the Nature Transformation Fund. These are complemented by specialized solutions like Regenerative Textiles and Bespoke Solutions for tailored company needs. The product portfolio also includes educational resources (white papers, webinars, CDR 101 course) and annual reports. The Climate Transformation Fund serves as the primary mechanism for companies to channel funding to high-impact climate initiatives, while the Carbon Removal offering provides direct procurement pathways and expert guidance for purchasing durable carbon removals.
Differentiator
Problem solved
Functional benefit
Products and services
- Milkywire Climate Action Platform Core platform that curates high-impact climate projects and channels funding from supporters to vetted climate solutions; for individuals, corporations, and partners seeking measurable climate action.
- Milkywire API & Integration Solutions Developer-facing API exposing Milkywire's climate project data, funding flows, and impact metrics for integration into partner platforms, sustainability dashboards, and enterprise workflows.
- Climate Transformation Fund (CTF) Corporate climate program operated by Milkywire that pools business contributions and directs them to high-impact climate projects, with reporting on outcomes for participating organisations.
- Salesforce-Backed CDR Pre-Purchases Pre-purchase program for high-quality carbon dioxide removal credits, jointly supported with Salesforce, enabling corporates to lock in future CDR supply and support early-stage removal technologies.
- AI for Earth Accelerator Accelerator program partnering Milkywire with selected organisations to scale AI-driven solutions for environmental and climate impact, combining funding access with platform support.
Quantifiable outcome
- Top 3 global CDR buyer by project diversity
- +5 more outcomes
Companies that use Milkywire
Customer profileNamed customers6 records
Segments4 records
Ideal customer profiles3 records
Milkywire technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration5 records
Feature3 records
Milkywire partnerships and signals
Strategic signalPartnerships
Ten partnerships are on record, tiered flagship, core and minor.
- KlarnaflagshipFounding partner of the Climate Transformation Fund (established 2021). Klarna is the inaugural donor and co-design partner of the CTF, which channels corporate contributions into high-impact climate solutions. Klarna's founding commitment established the fund model that has since deployed $17 million across ~70 projects. Milkywire manages the CTF and executes grant funding, CDR procurement, and reporting on behalf of the fund.
- WWF DenmarkcoreCo-authored the 'Guide to Financing Nature' white paper making the case for private-sector biodiversity actions. The white paper highlights real-world benefits of nature-positive initiatives, high-impact projects, and financing mechanisms. Features case studies demonstrating how businesses can engage in beyond-value-chain nature action.
- VELUX GroupminorFeatured as a case study company in Milkywire's 'Guide to Financing Nature' white paper (co-developed with WWF Denmark), demonstrating private-sector biodiversity engagement and beyond-value-chain nature actions.
- First Movers CoalitioncoreSalesforce participates in the First Movers Coalition (World Economic Forum / US State Department initiative) committing to purchase $100 million in durable CDR by 2030. The $5 million Milkywire collaboration is part of this commitment, designed to channel early capital into immature CDR technologies that struggle to attract mainstream buyers.
- WRLD FoundationflagshipFund Partner organization handling and expending contributions to curated Impact Funds. The Impact Funds are a collaboration between Milkywire and WRLD Foundation, developed to efficiently support high-impact climate and environmental initiatives. WRLD Foundation Sweden (org ID 802526-9328) and WRLD Foundation US (registered 501(c)(3)) retain discretion over contributions.
- Kairos CarbonminorCDR supplier developing a novel BioCCS pathway using wet organic waste. Received pre-purchase support through the Salesforce-backed portfolio managed by Milkywire. 350 tonnes covered by the pre-purchase.
- ArbonminorCDR supplier advancing next-generation direct air capture (DAC) technologies using low-energy humidity-swing technology. Based in New York, USA. Received 250 tonnes pre-purchase through the Salesforce-backed portfolio.
- PyroCCSminorCDR supplier integrating community-led biochar production with ecosystem restoration in Namibia. Received 1,357 tonnes pre-purchase through the Salesforce-backed portfolio managed by Milkywire.
- FluxminorCDR supplier deploying a new mineral feedstock for enhanced rock weathering with agroeconomic co-benefits. Received research-focused pre-purchase support through the Salesforce-backed portfolio.
- NormaminorCDR supplier advancing next-generation direct air capture (DAC) technologies. Received 125 tonnes pre-purchase through the Salesforce-backed portfolio managed by Milkywire.
Scale indicators7 records
Recent moves6 records
Expansion highlights6 records
Milkywire competitors and assessment
Company assessmentDirect peers
- Watershed: Enterprise climate platform offering carbon accounting and procurement (including durable CDR) integrated into a single software stack. Directly comparable to Milkywire on corporate CDR procurement advisory and Scope 3 action, though more software-led.
- Patch: Carbon credit and CDR procurement API/platform serving enterprise buyers with embedded sustainability workflows. Directly comparable to Milkywire's CDR procurement and API licensing offering, with a more software/API-first delivery model.
- Carbonfuture: Durable carbon removal procurement platform with a vetted portfolio across biochar, DAC and mineralization. Directly comparable to Milkywire's CDR catalog and methodology-led sourcing for corporate buyers.
- Cloverly: API-first carbon offset and CDR procurement infrastructure for enterprises and platforms. Comparable to Milkywire on API-driven CDR/offset procurement and developer integrations.
Broad incumbents
- South Pole: Large climate solutions provider covering advisory, project development, carbon credits and nature-based solutions globally. Comparable on enterprise climate advisory and credit procurement, at significantly larger scale.
- Rubicon Carbon: Large carbon credit developer and trader focused on nature-based and engineered removal portfolios. Comparable on procurement-side portfolio design and corporate CDR engagement.
Emerging players
- Sylvera: Independent carbon credit ratings and intelligence provider for CDR and nature-based projects. Comparable as an enabling counterpart to Milkywire's curation methodology rather than a direct buyer-side competitor.
- Persefoni: Climate management and accounting platform for enterprises, sitting upstream of CDR procurement decisions. Comparable as a complementary rather than competing software-led platform serving corporate climate teams.
Regional players
- EcoAct: European climate consulting and carbon project house (now part of EDF) with advisory and offset procurement. Comparable on enterprise climate advisory and BVCM-style services, with primarily European focus.
Others
- Klarna Earth / Stripe Climate (ecosystem comparables): Adjacent consumer and developer climate-giving programs (including the Stripe Climate API). Comparable as ecosystem peers that route consumer payments into high-quality climate projects via platform fees, though with different distribution models.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Milkywire social profiles
Digital presenceMilkywire compliance and trust
Trust signalCompliance1 record
Milkywire financial estimates
Financial estimateRevenue estimate
Valuation estimate
Milkywire leadership team
Management profileNumber of profiles
Profiles3 records
Milkywire funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Milkywire M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Milkywire
What does Milkywire do?
Milkywire operates a climate action platform that curates and channels funding toward high-impact climate projects, runs corporate programs such as the Climate Transformation Fund and Salesforce-backed carbon dioxide removal (CDR) pre-purchases, and exposes its project data via an API for integration into partner workflows. The platform serves both organisations running sustainability/carbon programs and individuals supporting climate causes through fundraising and donations.
Is Milkywire a public or private company?
Milkywire is a private company. It is classified as venture growth investor backed and is currently operating.
When was Milkywire founded?
Milkywire was founded in 2018. It employs 11 to 50 people.
Where is Milkywire based?
Milkywire is headquartered in Stockholm, Sweden, in the Europe region.
How does Milkywire make money?
Four revenue lines are on record. Platform Transaction Fees are the primary driver. The others are climate Advisory and Consulting Services, CDR Procurement and Catalytic Purchasing and API and Integration Licensing.
Who are Milkywire's main competitors?
Direct peers on record are Watershed, Patch, Carbonfuture and Cloverly. Broad incumbents are South Pole and Rubicon Carbon. Emerging players are Sylvera and Persefoni. EcoAct is listed as a regional player. Klarna Earth / Stripe Climate (ecosystem comparables) is listed as an others.
Does Milkywire have an API?
Yes. Milkywire's API allows partners to integrate payment functionality for making contributions to impact funds on behalf of their customers. The API is available by invitation only for partners who have been granted access. Milkywire maintains records of all donations made through the API and sends payment instructions for aggregate donation amounts monthly.
What industry is Milkywire in?
Milkywire's product category is Climate Technology Platform. Its primary akta.pro industry code is EUABAKAL, Offsets & Carbon Removal Procurement Strategy (portfolio design, quality screening), with a secondary code of EUABAKAF, Climate Governance, Operating Model & Internal Carbon Pricing Design. Its NAICS code is 518210 and its SIC code is 7370.