What Apollo Engineering Solutions does

Apollo Engineering Solutions (AES) is a Lorton, Virginia-based energy consulting firm founded in 2010 by Dick Santangelo, a 42-year federal veteran and former HUD Program Manager who was part of the Apollo 11 launch team at Kennedy Space Center. The company serves municipalities, Public Housing Authorities (PHAs), and affordable housing clients, delivering energy audits, energy performance contracting (EPC), resiliency planning, utility monitoring, carbon credit monetization, and IRA Section 179D tax deduction advisory. AES claims reach into over 3,200 PHAs and positions itself as an implementation partner to major enterprise primes including Deloitte, KPMG, Bank of America, Siemens, Honeywell, and GE on HUD-related and federal energy programs.

The firm operates a professional services and project delivery model, monetizing through energy audits, EPC oversight, regulatory advisory, and an emerging As-a-Service Infrastructure Financing offering that shifts revenue toward outcome-based contracts. Its go-to-market is anchored by deep relationships within the federal housing ecosystem, leveraging specialized expertise in HUD programs, RAD (Rental Assistance Demonstration), and 179D tax provisions to win work that generalist energy consultancies cannot easily compete for. Recent service additions in carbon credit monetization and resiliency planning extend the platform beyond traditional energy efficiency into climate adaptation and federal IRA-driven revenue streams.

AES is structured as a private LLC with 11-50 employees and has not disclosed any external funding rounds or revenue figures. The competitive position rests on the founder's federal network, regulatory specialization, and PHA distribution footprint rather than on proprietary technology, AI, or venture-backed scaling, which caps both growth velocity and exit optionality relative to software-enabled peers.

Name

Apollo Engineering Solutions

Legal name

Apollo Engineering Solutions, LLC

Website

https://apolloengineeringsolutions.com

Company type

Private

Founded year

2010

Operating status

Operating

Headcount range

11–50 employees

Short description

Apollo Engineering Solutions is a Lorton, Virginia-based energy consulting firm founded in 2010 that serves municipalities, public housing authorities, and affordable housing clients with energy audits, EPC, resiliency planning, carbon monetization, and IRA/179D tax services.

Ownership category

akta.pro rank

Product category

Energy Consulting Services

NAICS

Engineering Services (54133), Other Scientific and Technical Consulting Services (541690)

SIC

Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Performance Contracting & Energy-as-a-Service (EaaS) for Buildings (BPABAGAN)

akta.pro secondary industries

Asset Management & Owner’s Engineering (Lifecycle Strategy, Budgeting, Technical Due Diligence) (EUAMAGAJ), Enterprise Risk Management (ERM) Advisory (BPAHAFAA)

Keywords

• Energy consulting services
• Energy performance contracting
• Green building solutions
• Utility monitoring services
• Carbon credit monetization

Headquarters

HQ city

Lorton

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Energy Consulting Services: Fees for energy audits, strategic facilities planning, and project lifecycle management services. Services are customized to customer needs and project scope.
2. Infrastructure Financing (As-a-Service): Third-party owned, operated, and maintained energy infrastructure. Customers pay service fees from operating budget based on utility usage with no debt incurred.
3. Energy Performance Contracting: Value-added resources to supplement in-house capacity for energy projects. On-site representation fees for construction oversight and project management.
4. Carbon Monetization Services: Revenue from monetizing carbon credits and offsets generated through energy efficiency projects and solar installations. Can result in ongoing annuity payments for continued carbon reductions.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Apollo Engineering Solutions (AES) provides consulting services for energy, water, and green demand management to municipalities, cities, and the affordable housing market. Its offerings span energy audits, strategic facilities planning, energy performance contracting, resiliency planning, utility monitoring and benchmarking, awareness training, 179D tax deduction management, carbon credit monetization, and As-a-Service infrastructure financing. The company operates as an extension of client staff, providing on-site representation and guidance through the full lifecycle of energy projects.

Product overview

Apollo Engineering Solutions (AES) is a facilities consulting firm offering a comprehensive suite of energy, water, and green business services. The company provides integrated solutions including Energy Audits and Strategic Facilities Planning (which form the foundation for utility improvement projects), Energy Performance Contracting, Resiliency Planning, Utility Monitoring (Measurement & Verification and Benchmarking), Awareness Education and Training, Monetization of Carbon Credits, Inflation Reduction Act Services (179D deduction management), As-a-Service Infrastructure Financing, and Rental Assistance Demonstration facilitation. AES serves municipalities, cities, and the affordable housing market with green and resilient business solutions. The company was founded in 2010 and is celebrating its 14-year anniversary.

Differentiator

Problem solved

Functional benefit

Products and services

• Energy Audits

Quantifiable outcome

• Energy investments increased from $170.5M (2002) to $885M (2011)
• +2 more outcomes

Named customers22 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

13 partnerships are on record, tiered core and minor.

• AmerescocoreTechnology or IntegrationEnergy services company providing energy efficiency and renewable energy solutions. Partner in delivering integrated energy solutions to housing authorities and municipalities.
• HoneywellcoreTechnology or IntegrationBuilding controls and energy management systems provider. Technology partner for building automation and energy efficiency implementations.
• SiemenscoreTechnology or IntegrationTechnology conglomerate providing building automation, energy management, and infrastructure solutions.
• ICF InternationalminorImplementation/ SI/ Consulting PartnerConsulting firm providing advisory services in energy, environment, and infrastructure. Partner for project consulting and implementation.
• DeloitteminorImplementation/ SI/ Consulting PartnerProfessional services firm providing consulting, advisory, and implementation support for energy projects.
• KPMGminorImplementation/ SI/ Consulting PartnerProfessional services firm providing advisory and consulting services in energy management and sustainability.
• Northrop GrummanminorStrategic or Co-development PartnerAerospace and defense technology company. Strategic partner for resiliency and security-related projects.
• Enterprise Community PartnersminorStrategic or Co-development PartnerNonprofit organization focused on affordable housing and community development. Strategic partner for green development initiatives.
• Lawrence Berkeley National LabsminorStrategic or Co-development PartnerResearch institution providing energy efficiency research and expertise for partnership collaborations.
• Department of Housing and Urban DevelopmentcoreStrategic or Co-development PartnerFederal agency overseeing public housing. Core strategic partner for energy performance contracting and housing sustainability programs.
• National Association of Housing and Redevelopment OfficialsminorGTM or Marketing PartnerProfessional association providing industry networking and advocacy for housing authorities. Marketing and industry engagement partner.
• Association of Energy EngineersminorGTM or Marketing PartnerProfessional association for energy engineers. Industry engagement and professional development partner.
• ACEEEminorGTM or Marketing PartnerAmerican Council for an Energy-Efficient Economy. Research and advocacy partner for energy efficiency best practices.

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• McKinstry: National ESCO delivering building energy retrofits, performance contracting, and facility services to public agencies, schools, and housing authorities — directly competes with AES for the same RFP-driven energy efficiency projects.
• Ameresco: One of the largest pure-play ESCOs serving federal, state, local, and affordable housing clients with energy performance contracting and renewables — same customer base and service offering as AES, including HUD/PHA work and As-a-Service-style financing.
• Willdan Group: Energy services and engineering consulting firm serving municipalities and government agencies with energy planning, benchmarking, and program management — closely overlapping AES's municipal segment.
• Bright Power: Energy and water management firm focused specifically on multifamily and affordable housing, providing benchmarking, analytics, and project advisory — overlap with AES's affordable housing energy audits and M&V work.
• ICF International: Large advisory firm with deep energy, environment, and infrastructure consulting practices serving government clients — competes for energy management, climate, and HUD-adjacent advisory engagements.
• Association for Energy Affordability: Nonprofit specializing in energy efficiency program design and direct implementation for affordable housing — shares the affordable-housing customer base and ESCO-like service mix with AES.

Broad incumbents

• Johnson Controls: Global building automation and energy services incumbent with a dedicated performance contracting and digital services arm — competes with AES for large municipal and PHA energy projects while offering a much broader HVAC and controls portfolio.
• Siemens Smart Infrastructure: Global conglomerate whose Smart Infrastructure business delivers building automation, energy management, and microgrid solutions to municipalities and large building owners — both a listed partner of AES and a competitor in the underlying technology layer.
• Trane Technologies: Major building HVAC and energy services provider with an active performance contracting and decarbonization services line addressing the same government and affordable housing end markets as AES.
• Honeywell Building Technologies: Large incumbent in building management systems and energy optimization for commercial and institutional facilities, including HUD-adjacent public housing retrofits — both a core technology partner for AES and a competitor on the implementation side.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 Apollo Engineering Solutions