What D3 Jubilee does

D3 Jubilee is a South Korea-based impact investment intermediary founded in 2011 and headquartered in Seoul. The firm provides capacity-building services and technical assistance to entrepreneurs, operating as a vehicle that deploys capital and operational support into impact-aligned ventures. Its named portfolio holding is Kernelog, a Korean solar operations and maintenance (O&M) startup that has built an AI-powered module-level monitoring solution. That monitoring platform collects data from up to 70,000 solar modules across 400 power plants at 10-second intervals, enabling real-time performance tracking, anomaly detection, and predictive analytics that have reportedly delivered 7–23% power generation improvements across seven reference sites. Kernelog is led by CEO Oh Bok-seong and is venture-backed, having raised a cumulative 4 billion KRW from Smilegate Investment and D3 Jubilee Partners.

The business model centers on investing in and supporting early-stage entrepreneurs, with capacity-building as the primary value-add. Revenue mechanics are not publicly disclosed and likely comprise a mix of investment returns and service or management fees, though specific pricing structures, management fee rates, or carried interest arrangements are not evidenced in available sources. The firm's direct geographic footprint is concentrated in Korea, with portfolio-level exposure extending into Southeast Asia through Kernelog's 2025 partnership with Singapore-based Kilsa Global, which executed a pilot installation at Vietnam's Binh Duong Province industrial park.

Publicly verifiable operational signals are weak. The company website (d3jubilee.com) currently returns a database error / temporary server outage message, raising questions about present operating status. The firm is private, has 11–50 employees per available data, and is led by founder and CEO Doug Lee. No financial disclosures, headcount trend data, or detailed cap table information are available for D3 Jubilee as the parent entity.

Name

D3 Jubilee

Website

https://d3jubilee.com

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

1–10 employees

Short description

D3 Jubilee is a Seoul-based impact investment intermediary founded in 2011 that provides capacity-building services and technical assistance to entrepreneurs, with portfolio exposure to Korean solar O&M startup Kernelog.

Ownership category

akta.pro rank

Product category

Impact Investment Services

NAICS

Miscellaneous Intermediation (52391), Miscellaneous Financial Investment Activities (523999)

SIC

Investment Advice (6282)

akta.pro primary industry

Early-Stage Venture Capital (Series A/B) (FSANAAAB)

akta.pro secondary industry

SDG / Thematic Sustainable Investment Funds (FSANAJAN)

Keywords

• Impact investing
• Capacity building
• Technical assistance
• Social enterprise advisory
• Venture co-investment

Headquarters

HQ city

Seoul

HQ country

South Korea

HQ region

Asia

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales

Core offering

D3 Jubilee is an impact investment intermediary that deploys capital into entrepreneur-led ventures and supplements those investments with capacity-building services and technical assistance. The firm co-invests alongside institutional investors such as Smilegate Investment (e.g., a cumulative 4 billion KRW round into Kernelog) and supports portfolio companies with go-to-market and international expansion partnerships.

Product overview

D3 Jubilee is an investor in Kernelog, a Korean solar O&M (Operations and Maintenance) startup. The primary product is Kernelog, an AI-powered module-level monitoring solution designed for solar power plant management. The solution provides continuous, real-time monitoring of solar modules at 10-second intervals, collecting data across large-scale deployments to enable performance optimization and anomaly detection.

Differentiator

Problem solved

Functional benefit

Products and services

• Impact Investment Intermediation Equity and co-investment intermediation services that deploy capital from institutional partners into impact-oriented startups, exemplified by D3 Jubilee's 2 billion KRW co-investment alongside Smilegate Investment in Kernelog.
• Capacity-Building and Technical Assistance Non-financial advisory support provided to portfolio entrepreneurs covering operational capability building and market expansion, including facilitating cross-border partnerships such as the Kilsa Global alliance that enabled Kernelog's 2025 pilot deployment in Vietnam.

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Partnerships

One partnership is on record.

• Kilsa GlobalcoreStrategic or Co-development Partner · 1 January 2025Singapore-based Kilsa Global partnered with Kernelog for international expansion. A pilot installation was completed at Vietnam's Binh Duong Province industrial park in 2025. This partnership is central to Kernelog's strategy to expand beyond Korea into Southeast Asian markets.

Recent moves4 records

Expansion highlights3 records

Direct peers

• Acumen: Global impact investment intermediary that pairs patient capital with capacity-building/technical assistance for entrepreneurs in emerging markets — closely mirrors D3 Jubilee's blended capital + capacity model and impact mandate.
• Bridges Fund Management: Specialist impact investment manager running sustainable and outcomes-focused strategies for institutional LPs — comparable as a dedicated impact intermediary with similar LP-facing structure.
• Root Capital: Impact investor that lends to and builds capacity with small and growing enterprises in emerging markets — directly analogous to D3 Jubilee's capital + technical assistance model.
• ClearlySo: Impact investment intermediary connecting impact-focused enterprises with capital — directly comparable as an impact investing intermediation platform with advisory/origination services.
• Global Partnerships: Impact-first investor of capital and capacity for enterprises serving people living in poverty — directly analogous to D3 Jubilee in providing both financial capital and non-financial support to impact ventures.

Broad incumbents

• Omidyar Network: Established impact investment firm deploying capital and building ventures across geographies and themes — larger and broader in scope but operates in the same impact intermediation category.
• BlueOrchard Finance: Global impact investment manager focused on emerging and frontier markets — comparable mission and LP base, but considerably larger and more institutionalized than D3 Jubilee.
• Triodos Investment Management: European sustainable and impact investment manager with deep thematic funds — operates in the same impact investment intermediation category but at significantly greater AUM scale.

Emerging players

• Sonen Capital: Specialist impact investment advisor and intermediary for family offices and foundations — comparable positioning as a smaller, specialist impact intermediation firm with LP intermediary function.

Regional players

• Insitor Partners: Asia-focused impact investment manager backing early-stage inclusive businesses — closely comparable in geographic focus (emerging Asia) and impact-first investment thesis, though D3 Jubilee is Korea-rooted.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat2 records

Key risks5 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/d3jubilee-partners

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments120 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about D3 Jubilee