Demeter Partners
Demeter Partners is a Paris-based private investment firm that takes capital interests in unlisted companies across eco-industries, eco-energies, and modern-day hazards, with a disclosed portfolio spanning renewable energy, environmental services, and recycling.
- Company typePrivate
- Founded2007
- HeadquartersParis, France
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Demeter Partners does
Demeter Partners is a Paris-based private investment firm founded in 2007 (with acquisition history extending to 2006) that takes capital interests in generally unlisted companies operating in eco-industries, eco-energies, and modern-day hazards. The firm has executed eight disclosed acquisitions across this mandate, including Fondasol SA (geotechnical and environmental engineering, 2014), Naldeo Group (sustainable infrastructure consulting, 2012), Contenur (waste and recycling services, 2012), SA Delta Recyclage (2012), Renewable Power International (renewable generation, 2011), Controlab SA (2007), IES Synergy (power electronics, 2006), and VERGNET (2006). The portfolio reflects a buy-and-build approach spanning renewable energy, environmental services, recycling, and clean-infrastructure assets. The firm was previously known as Demeter Advisors.
The company is led by founders Sophie Guesnerot (Founder, Managing Partner) and Olivier Dupont (founding partner), alongside managing partners Lionel Cormier and Stéphane Villecroze, and Philippe Detours (General Partner, Head of Infrastructure). The team size is reported at 11–50 employees, consistent with a boutique specialist manager. The firm's website (demeter-partners.com) currently resolves to a default Plesk hosting page rather than a live corporate site, which limits publicly verifiable operating detail.
Demeter Partners' business model follows a conventional PE structure: it invests equity (and likely debt capital) into private companies within its mandate verticals, generating returns through capital appreciation, dividends, and eventual exits. Revenue is driven by management fees on committed/deployed capital and by performance fees (carried interest) on realized gains; specific AUM, fund vintage, fee structure, LP composition, and realized return data are not disclosed in the available sources. Some source data points (an Origin Agency investment in March 2026 and South Asia/India operating geography) are inconsistent with the stated French eco-industries mandate and appear to reflect data conflation across entities; these have been flagged but not used to override the firmographic profile.
Demeter Partners firmographics
Firmographics- Name
- Demeter Partners
- Website
- https://demeter-partners.com
- Company type
- Private
- Founded year
- 2007
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Demeter Partners is a Paris-based private investment firm that takes capital interests in unlisted companies across eco-industries, eco-energies, and modern-day hazards, with a disclosed portfolio spanning renewable energy, environmental services, and recycling.
- Ownership category
- akta.pro rank
Demeter Partners industry classification
Industry- Product category
- Private Equity & Venture Capital (Eco-Industries)
- NAICS
- Other Financial Vehicles (52599)
- SIC
- Miscellaneous Business Credit Institution (6159)
- akta.pro primary industry
- Secondary Venture Funds (VC Secondaries) (FSANAAAK)
Keywords
Where Demeter Partners is headquartered
LocationHeadquarters
- HQ city
- Paris
- HQ country
- France
- HQ region
- Europe
Markets served
Demeter Partners business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Others
Demeter Partners product offering
Product offeringCore offering
Demeter Partners is a private investment firm that takes capital interests (generally unlisted equity) in companies operating in eco-industries, eco-energies, and modern-day hazards. The firm acquires controlling or strategic stakes in operating businesses (e.g., Fondasol, Naldeo Group, Contenur, VERGNET, IES Synergy) and provides strategic investment capital to growth-stage companies (e.g., Origin Agency), supporting them with financial, operational, and talent resources.
Differentiator
Problem solved
Functional benefit
Products and services
- Strategic Capital Investments in Eco-Industries & Eco-Energies
- Buyout / Acquisition of Operating Businesses Controlling acquisitions of operating companies in environmental services, recycling, renewable power, and related sectors, including Fondasol SA (2014), Naldeo Group (2012), Contenur (2012), SA Delta Recyclage (2012), Renewable Power International (2011), Controlab SA (2007), IES Synergy (2006), and VERGNET (2006).
Companies that use Demeter Partners
Customer profileIdeal customer profiles1 record
Demeter Partners technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Demeter Partners partnerships and signals
Strategic signalRecent moves6 records
Expansion highlights2 records
Demeter Partners competitors and assessment
Company assessmentDirect peers
- Mirova: Natixis-owned affiliate dedicated to sustainable investing across private equity (natural capital, energy transition) and infrastructure. Competes for the same French/European eco-industrial deal flow.
- Cycle Capital: Canada-based cleantech venture and growth investor with European reach. Comparable on cleantech/sustainable-industrial thesis, with overlap in cross-border eco deal sourcing.
- Omnes Capital: Paris-based private equity and infrastructure investor with a dedicated clean energy and environmental value fund. Direct comparable on eco-industrial mid-market buyouts in France/Europe.
- iXO Private Equity: French PE firm historically focused on clean energy, environment, and sustainable infrastructure. Highly comparable to Demeter in thesis (eco/energy), geography (France), and mid-market buyout ticket size.
- Seventure Partners: Paris-based growth/venture investor with an impact and sustainability tilt, active in eco-innovation. Comparable as a French sustainability-focused investment platform, though typically at smaller tickets than Demeter's buyout deals.
- Aster Capital: European venture/growth investor backed by industrial corporates, focused on energy transition and sustainable industry. Comparable on cleantech thesis and European mid-market orientation.
Broad incumbents
- Ardian: Large global PE and infrastructure investor with European roots, including sustainability-themed funds. Competes for European infrastructure and eco-industrial opportunities at significantly larger scale.
- Eurazeo: Major French-listed private investment firm with diversified strategies including growth, buyout, and infrastructure/sustainability sleeves. Overlaps with Demeter on French mid-market eco-industrial and infrastructure deals but at larger ticket sizes.
- Tikehau Capital: Paris-based alternative asset manager with PE, real assets, and a sustainability/transition fund. Competes in French/European eco-industrial and transition asset deals as a larger, publicly-listed platform.
- Bpifrance: French state investment bank managing direct eco-energy and industrial funds alongside broader SME and innovation mandates. Competes for the same French eco-industrial mid-market but with materially larger capital base and policy mandate.
Market position
Strengths4 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights4 records
Customer concentration
Demeter Partners social profiles
Digital presenceDemeter Partners financial estimates
Financial estimateRevenue estimate
Valuation estimate
Demeter Partners leadership team
Management profileNumber of profiles
Profiles5 records
Demeter Partners funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Demeter Partners M&A and investment
M&A and investmentM&A8 records
Investments83 records
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Demeter Partners
What does Demeter Partners do?
Demeter Partners is a private investment firm that takes capital interests (generally unlisted equity) in companies operating in eco-industries, eco-energies, and modern-day hazards. The firm acquires controlling or strategic stakes in operating businesses (e.g., Fondasol, Naldeo Group, Contenur, VERGNET, IES Synergy) and provides strategic investment capital to growth-stage companies (e.g., Origin Agency), supporting them with financial, operational, and talent resources.
Is Demeter Partners a public or private company?
Demeter Partners is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Demeter Partners founded?
Demeter Partners was founded in 2007. It employs 11 to 50 people.
Where is Demeter Partners based?
Demeter Partners is headquartered in Paris, France, in the Europe region.
Who are Demeter Partners's main competitors?
Direct peers on record are Mirova, Cycle Capital, Omnes Capital, iXO Private Equity, Seventure Partners and Aster Capital. Broad incumbents are Ardian, Eurazeo, Tikehau Capital and Bpifrance.
Does Demeter Partners have an API?
No public API is recorded for Demeter Partners.
What industry is Demeter Partners in?
Demeter Partners's product category is Private Equity & Venture Capital (Eco-Industries). Its primary akta.pro industry code is FSANAAAK, Secondary Venture Funds (VC Secondaries). Its NAICS code is 52599 and its SIC code is 6159.