L&S Energy

What L&S Energy does

L&S Energy Services, Inc. is a private energy efficiency consulting firm headquartered in Clifton Park, New York, with additional offices in New York City, Las Vegas, Nevada, and Columbus, Ohio. The firm delivers a broad spectrum of energy consulting and engineering services to commercial, industrial, agricultural, institutional, and multifamily clients, including ASHRAE Level I, II, and III energy audits, energy feasibility studies, building energy modeling, retro-commissioning, LEED certification support, Combined Heat and Power (CHP) and microgrid feasibility analysis, data center energy benchmarking, industrial process efficiency consulting, and agricultural energy assessments. L&S has executed 350+ task orders across 800+ building sites, benchmarked 500+ buildings under NYC Local Law 84, certified 37+ Energy Star buildings, served 157 industrial and manufacturing facilities in New York, completed 78 CHP feasibility studies, and reviewed 219 technical feasibility studies.

The firm's core technology stack is energy efficiency consulting and analysis using industry-standard building energy modeling software — eQUEST, DOE-2, and TREAT — combined with measurement and verification (M&V) protocols, specialized data logging instrumentation, and infrared thermography for building envelope diagnostics. L&S holds three US patents in solar collector and solar energy system technologies (held by Senior Energy Engineer Dr. Michael Stiles) and authored two industry-standard ASHRAE publications: 'Making the Business Case' (Volume 1) and 'Technical Implementation Guide' (Volume 2) of ASHRAE's Energy Efficiency Guides for Existing Buildings. The firm is led by CEO Dr. Dennis Landsberg, PhD, PE, CEM (Chairman of ASHRAE TC7.6 and Guideline 14, AEE Energy Managers Hall of Fame inductee 2015), President Ron Slosberg, CEM, and Vice Presidents Brendan Kelly and Yigit Guctas, supported by a 15-person staff of Professional Engineers, Certified Energy Managers, LEED APs, BEAPs, and CMVP-certified professionals.

L&S operates a professional services revenue model, delivering custom analysis and technical consulting either as an approved technical assistance vendor to utility and state energy programs — including NYSERDA, National Grid, Con Edison, Nevada Energy, NYSEG, RG&E, and New Jersey Clean Energy — or through direct consulting engagements with end customers such as the Empire State Building, Verizon, Google, IBM, Columbia University, MIT, Cornell University, Albany Medical Center, NYC Schools, and Price Chopper Supermarkets. Go-to-market is sales-led and relationship-driven, leveraging utility program contracts, enterprise field sales to large C&I clients, and referral-based demand generation. Pricing is project-based and negotiated per engagement, with customer costs often cost-shared with utilities through incentive programs. The firm is partner-owned with no disclosed institutional investors.

Name

L&S Energy

Legal name

L&S Energy Services, Inc.

Website

https://ls-energy.com

Company type

Private

Founded year

2006

Operating status

Operating

Headcount range

11–50 employees

Short description

L&S Energy Services is a private energy efficiency consulting firm serving commercial, industrial, agricultural, institutional, and multifamily clients across the US with energy audits, commissioning, building modeling, LEED certification, and CHP/microgrid feasibility services, delivered primarily through utility program partnerships.

Ownership category

akta.pro rank

Product category

Energy Consulting Services

NAICS

Other Scientific and Technical Consulting Services (54169)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Energy Systems & Power Engineering Consulting (BPAHAIAG)

akta.pro secondary industry

Asset Management & Owner’s Engineering (Lifecycle Strategy, Budgeting, Technical Due Diligence) (EUAMAGAJ)

Keywords

• Energy efficiency consulting
• Building energy audits
• Commissioning services
• LEED certification support
• Utility program management

Headquarters

HQ city

Clifton Park

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Utility Program Technical Assistance: L&S provides custom analysis and technical services as an approved vendor for utility programs including NYSERDA, National Grid, Con Edison, Nevada Energy, NYSEG, and RG&E. Services include energy audits, engineering analysis, M&V, and technical consulting that are cost-shared between utilities and customers.
2. Direct Consulting Services: Direct consulting engagements with commercial, industrial, agricultural, institutional, and multifamily clients for energy feasibility studies, commissioning, building modeling, and program development. Services include ASHRAE Level I, II, and III audits, LEED services, and technical assistance.
3. NYC Local Law Compliance Services: Registered provider for NYC LL84 benchmarking and LL87 energy audit/retro-commissioning services for buildings 50,000+ gross square feet under the Greener, Greater Buildings Plan.

Pricing tiers

Go-to-market motion2 records

Distribution channels7 records

Marketing channels4 records

Core offering

L&S Energy Services provides professional energy consulting, engineering analysis, commissioning, and technical assistance services to commercial, industrial, agricultural, institutional, and multifamily customers. Its core work includes ASHRAE Level I-III energy audits, building energy modeling (eQUEST, DOE-2, TREAT), LEED and ENERGY STAR certification support, Combined Heat and Power (CHP) and microgrid feasibility studies, retro-commissioning and Measurement and Verification (M&V), and program development for utilities and government agencies.

Product overview

L&S Energy Services is an energy consulting firm (not a software product company) that offers a portfolio of professional consulting services rather than a unified software platform. The core service offerings include Existing Building Services (energy audits, retro-commissioning), New Construction/LEED Services (building simulation, green building certification), CHP/Microgrids Services (distributed generation consulting), Commissioning and M&V (system commissioning, measurement and verification), Program Development Services, Agricultural Energy Services (farm assessments, greenhouse development), and specialized services including Data Center Energy Analysis, Industrial Process Efficiency, Multifamily Services, Infrared Thermography, and Utility Benchmarking. These services are delivered by consulting engineers using industry-standard modeling tools (eQUEST, DOE-2, TREAT) rather than through a software product. The company operates as a professional services consultancy providing technical analysis, engineering studies, and program development support to utilities, government agencies, and commercial/industrial clients.

Differentiator

Problem solved

Functional benefit

Products and services

• Existing Building Services Comprehensive energy efficiency and conservation consulting for existing commercial, industrial, institutional, and multifamily buildings, including energy audits, retro-commissioning, and implementation support.
• New Construction and LEED Services Energy analysis, building simulation modeling (DOE-2, eQUEST), and LEED certification support for new construction projects, including green building and Net Zero Energy analysis.
• CHP and Microgrid Services Combined Heat and Power (CHP) and microgrid technology consulting, feasibility assessments, technical review, and evaluation services for distributed generation systems.
• Commissioning and Measurement and Verification (M&V) System commissioning and retro-commissioning services with Measurement and Verification (M&V) support, including building energy systems commissioning, design optimization, and performance testing.
• Program Development Services Development and evaluation of energy efficiency programs including CHP programs, feasibility studies, technical reviews, and M&V protocol development for utility and government clients.
• Agricultural Energy Services Energy efficiency consulting for agricultural operations including farm energy assessments, dairy, greenhouse, and agricultural process efficiency improvements.

Quantifiable outcome

• 350+ task orders completed covering 800+ building sites
• +3 more outcomes

Named customers17 records

Segments8 records

Ideal customer profiles7 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Eleven partnerships are on record, tiered core, major and minor.

• NYSERDA (New York State Energy Research and Development Authority)coreStrategic or Co-development PartnerL&S provides multiple specialized services statewide to NY industries under contract with NYSERDA. Approved vendor for Flexible Technical Assistance, Industrial Process and Efficiency (IPE), Agriculture Energy Efficiency, Existing Facilities, New Construction (High Performance, LEED and Net Zero), and Multi-Family Performance Program. Also serves as Independent Contractor for Small Commercial Energy Assessment Program.
• National GridcoreChannel Partner/ Reseller/ DistributorTechnical Assistance (TA) provider to National Grid serving Upstate NY, Downstate NY, Massachusetts, New Hampshire, and Connecticut. Provides custom analysis and quality control services to large C&I base customers on cost-shared basis.
• Nevada Energy (NVEnergy)majorChannel Partner/ Reseller/ DistributorNevada Energy Partner performing technical assistance studies, energy audits, engineering services, HVAC consulting, IT energy solutions, lighting, agriculture irrigation and refrigeration solutions for Nevada customers under State of Nevada engineering license.
• Con EdisonmajorChannel Partner/ Reseller/ DistributorCon Edison C&I Energy Efficiency Program Market Partner providing custom analysis services and technical support to C&I customers for installation of energy efficient equipment, with application assistance.
• NYSEG and RG&EminorChannel Partner/ Reseller/ DistributorApproved Trade Ally for NYSEG and RG&E Commercial and Industrial Rebate Programs offering custom rebates for energy efficiency measures not covered by prescriptive programs.
• New Jersey Clean EnergyminorChannel Partner/ Reseller/ DistributorOfficial participant in State of N.J. efforts to save energy and reduce greenhouse gas emissions, offering whole systems analysis or custom measures analysis for commercial, industrial, and new construction projects.
• Building Commissioning Certification BoardmajorTechnology or IntegrationCertified Commissioning Firm (CCF) providing commissioning, retro-commissioning and ongoing commissioning services for new construction and existing buildings.
• NYC Department of BuildingscoreStrategic or Co-development PartnerRegistered by NYC Department of Buildings to provide Local Law 87 (LL87) Energy Audit surveys and analysis of energy use in buildings and retro-commissioning under the Greener, Greater Buildings Plan.
• U.S. Environmental Protection Agency (ENERGY STAR)majorStrategic or Co-development PartnerENERGY STAR Partner since 2012. Provides Energy Performance Indicators (EPIs) to benchmark industrial plant energy performance and performs Energy Star certifications for buildings meeting EPA performance levels.
• US Green Buildings CouncilminorStrategic or Co-development PartnerCorporate member of USGBC supporting green building initiatives and LEED certification services.
• ASHRAEmajorStrategic or Co-development PartnerL&S contracted by ASHRAE to produce Energy Efficiency Guides for Existing Buildings. CEO Dr. Landsberg serves as Chairman of ASHRAE TC7.6 and Guideline 14, and is a voting member of ASHRAE standards committees.

Scale indicators9 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• kW Engineering: kW Engineering is a small energy efficiency and commissioning consulting firm serving C&I and institutional clients on behalf of utility programs, with deep California/PG&E roots. Directly comparable to L&S in scope (audits, retro-commissioning, M&V) and in reliance on utility-approved-vendor workflows.
• Willdan Energy Solutions: Willdan's energy solutions division delivers energy audits, retro-commissioning, and demand-side management programs for utilities and municipalities across multiple U.S. states. Closest publicly comparable peer to L&S in terms of services portfolio, utility-program delivery, and government compliance work.
• Energy Resource Solutions (ERS): ERS is a Massachusetts-based energy management consulting firm providing energy audits, commissioning, retro-commissioning, and M&V services to commercial, institutional, and industrial customers. Highly comparable boutique competitor with similar service mix and Northeast/Mid-Atlantic customer base.
• Newcomb Energy Solutions: Newcomb provides energy engineering, facility commissioning, and LEED services to commercial, institutional, and government clients in the Northeast. Comparable in size, scope, and customer profile to L&S, including utility program relationships and ASHRAE-aligned service offerings.

Broad incumbents

• TRC Companies: TRC is a large national engineering and consulting firm with a major energy efficiency and utility program practice. Provides overlapping services to L&S across energy audits, program design, and engineering consulting, but as a much broader and more diversified infrastructure consulting platform.
• NORESCO: NORESCO specializes in energy efficiency, distributed generation, and energy savings performance contracting for government, institutional, and commercial customers. Overlaps with L&S in CHP/microgrid feasibility and federal facility work, but NORESCO additionally delivers capital and implementation at scale.
• ICF International: ICF is a global consulting firm with substantial energy and climate practices serving utilities, governments, and commercial clients on energy efficiency, decarbonization, and resilience programs. Broad incumbent overlap with L&S on utility program strategy, evaluation, and building energy services.
• CLEAResult: CLEAResult is one of the largest North American energy efficiency program implementation firms, running utility demand-side management programs for dozens of utilities. Overlaps with L&S in the utility-program technical-assistance and audit space but at vastly greater scale and program-management focus.
• DNV Energy Systems: DNV's energy division delivers energy management, efficiency consulting, and standards-based advisory services globally, including building performance, commissioning, and renewable energy advisory. Competes with L&S in CHP, microgrid, and standards-based consulting but at much broader international scale.

Emerging players

• Resource Innovations: Resource Innovations provides energy efficiency program design, evaluation, and implementation services primarily to utilities and state agencies. Comparable to L&S in program development and technical assistance work, but with a stronger evaluation/dashboard-software orientation.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/l-and-s-energy-services-inc.

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 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 L&S Energy