EXXERGY

What EXXERGY does

EXXERGY GmbH is a privately held German management consulting firm founded in 1999 by Thomas C. Sauer, headquartered in Gräfelfing with a second office in Frankfurt. The firm delivers project-based advisory services to enterprises in four vertical sectors: solar/photovoltaic manufacturing, wind energy, energy storage, and glass manufacturing. Its eight service lines span risk minimization (for investors and insurers), sales recovery and growth, customer service optimization, production process optimization, strategic turnaround consulting, glass furnace production increase, project management for flat glass producers, and financial/quality strategy for module manufacturers.

The firm operates with no proprietary technology, no software products, and no AI/ML capabilities; all deliverables are human-led consulting engagements executed by a senior team whose members each hold at least 20 years of professional experience. Founder Thomas C. Sauer brings direct C-suite credentials as a former Executive Vice President of SCHOTT AG and CEO of IBC Solar AG, and has been recognized with the IEC 1906 Award for achievements in the photovoltaic and energy sector. EXXERGY holds institutional memberships in VDE, DIN, and IECRE, and is a recognized BAFA Energy Auditor, lending standards-body credibility to its engagements.

The business model is professional services: customized, scope-defined consulting projects priced individually, with no standardized pricing tiers publicly disclosed. Go-to-market relies on the founder's personal network, referrals from existing enterprise clients (including Gerresheimer, Heye International, Okamoto, Trina Solar, and Praxair), and the firm's website. With 51–100 employees and no disclosed external funding, M&A activity, or subsidiaries, EXXERGY operates as an independent, founder-controlled boutique consultancy serving global industrial clients from its German base.

Name

EXXERGY

Legal name

EXXERGY GmbH

Website

https://exxergy.com

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

51–100 employees

Ownership category

akta.pro rank

Product category

Renewable Energy and Glass Industry Management Consulting

NAICS

Management Consulting Services (54161)

SIC

Services-Management Consulting Services (8742)

akta.pro primary industry

Enterprise Risk Management (ERM) Advisory (BPAHAFAA)

Keywords

• Management consulting services
• Renewable energy consulting
• Solar industry advisory
• Glass manufacturing consulting
• Energy storage strategy

Headquarters

HQ city

Gräfelfing

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D

Revenue model

1. Management Consulting Services: Project-based management consulting engagements serving clients in solar, wind, energy storage, and glass industries. Services include risk minimization consulting, sales optimization, service optimization, process optimization, strategy recommendations, production improvement, project management, and financial/quality strategy development.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

EXXERGY is a management consulting firm that delivers project-based advisory engagements to enterprise clients in the solar, wind, energy storage, and glass industries. The company provides eight distinct consulting service offerings covering risk minimization, sales boosting, customer service optimization, production process optimization, strategy recommendations, production increase, project management, and financial/quality strategy. All engagements are delivered directly by senior consultants with at least 20 years of professional experience.

Product overview

EXXERGY is a consulting company that offers professional advisory services to entrepreneurs and executives in the solar, wind, energy storage, and glass industries. The company provides eight distinct consulting service offerings: Risk Minimization Consulting (for investors and insurance companies), Sales Boosting Consulting (for solar module manufacturers), Customer Service Optimization, Production Process Optimization, Strategy Recommendations (business turnaround consulting), Production Increase Consulting (for glass factories), Project Management Services, and Financial and Quality Strategy consulting. All consulting engagements are delivered by a team of experts with at least 20 years of professional experience and global expertise.

Differentiator

Problem solved

Functional benefit

Products and services

• Risk Minimization Consulting Analysis of insurance products and risk management solutions for the photovoltaic sector, including analysis of over 3,600 insurance loss events to develop recommendations for investors and insurance companies in the solar/PV industry.
• Sales Boosting Consulting Consulting services to help solar module manufacturers recover from sales slumps, including customer base analysis, segmentation, regional strategies, organizational restructuring, and executive search.
• Customer Service Optimization Optimization of customer service operations for solar module suppliers, including benchmarking against industry standards, development of service concepts, and creation of over 20 distinguishable service offerings.
• Production Process Optimization Analysis and optimization of production processes in solar module factories, including customized training programs addressing cultural differences and efficiency improvements across the value chain.
• Strategy Recommendations (Turnaround Consulting) Analysis of business plans and development of turnaround strategies for photovoltaic manufacturers in financial distress, including worst-case scenarios and restructuring recommendations.
• Production Increase Consulting (Glass Melting Optimization) Design and optimization of firing concepts for glass melting furnaces to boost production by up to 30%, reduce energy consumption by 20%, and extend equipment lifespan. Targeted at flat and container glass manufacturers.
• Project Management Services Comprehensive project management support for flat glass manufacturers including process technology expertise, supplier qualification, contract negotiation, and capacity expansion projects.
• Financial and Quality Strategy Consulting Assessment of financial strength and quality assurance processes for solar module manufacturers to restore product bankability, including plant audits and re-audits for performance guarantee insurance.

Quantifiable outcome

• Recovery from internal semi-annual forecast of -30% compared to targets back to achieving original sales targets
• +3 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators1 record

Recent moves1 record

Expansion highlights3 records

Direct peers

• DNV: Independent assurance and risk management provider covering renewables certification and energy advisory. Comparable to EXXERGY because both operate in renewable energy certification, technical due diligence, and risk advisory for investors and asset owners—DNV at much greater scale.
• Wood Mackenzie: Global energy research and consulting firm covering renewables, power, and industrial energy markets. Comparable to EXXERGY because it sells advisory work to investors, insurers, and operators across the solar, wind, and energy-transition value chain—the same buyer set EXXERGY serves.
• Guidehouse: Energy, sustainability, and infrastructure advisory (formerly Navigant). Comparable to EXXERGY because it delivers strategic and operational consulting to utilities, renewables developers, and industrial energy users—overlapping deeply with EXXERGY's solar, wind, and storage consulting practice.

Broad incumbents

• McKinsey & Company: Global management consulting with a dedicated energy and materials practice. Comparable to EXXERGY because it competes for the same C-level strategy, turnaround, and operational improvement engagements in solar manufacturing, industrial energy, and glass.
• Oliver Wyman: Global management consultancy with European industrial and energy practice. Comparable to EXXERGY because both serve European industrial and energy clients on transformation, operations, and risk-related advisory work.
• Roland Berger: Germany-headquartered global management consultancy with strong industrial and energy practices. Comparable as a domestic-German consulting competitor for transformation, operations, and restructuring mandates overlapping with EXXERGY's strategy and production optimization work.
• Bain & Company: Global management consulting with industrial and energy sector coverage. Comparable to EXXERGY because both deliver strategy, turnaround, and operational performance work to industrial and energy-sector executives.
• S&P Global Commodity Insights: Energy and commodities research and advisory business (formerly IHS Markit). Comparable to EXXERGY because it serves investors, insurers, and operators in solar and energy with research, risk analytics, and consulting—overlapping with EXXERGY's investor/insurance risk advisory work.
• Boston Consulting Group: Global management consultancy serving energy and industrial clients on transformation and operations work. Comparable to EXXERGY because it competes for senior-level strategic and operational consulting mandates across renewables and industrial manufacturing.

Emerging players

• Solargis: Solar data and analytics provider serving project developers, financiers, and insurers. Comparable to EXXERGY because it sits at the intersection of technical data, risk, and bankability work for solar PV—adjacent to EXXERGY's risk minimization and bankability consulting for the same buyer base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

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

Investments

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

Frequently asked questions about EXXERGY