What Energy Metering Systems does

Energy Metering Systems, Inc. (EMS) is a U.S.-based, founder-owned designer, manufacturer, and installer of submetering and temperature-monitoring systems founded in 1981 by Roger Freischlag. The company focuses exclusively on the multi-family residential market — including apartments, condominiums, military housing, student housing, HUD/affordable housing, and select commercial retail — and reports more than 1,000,000 meters installed throughout the United States. Its core technology is the proprietary G.A.S. (Gas Allocation System) family of heat allocation meters, which uses time, temperature, and BTUH measurement to allocate gas consumption for heating, domestic hot water, baseboard, and fan-coil systems across individual dwelling units without requiring per-unit gas piping modifications. The product line also includes wireless (E12 P/E13 P) and hardwired (ER-32/ER-64) electronic kWh submeters meeting ANSI C12.1 and C12.16 revenue-grade standards, as well as the TMON temperature-monitoring system introduced in 2011. Wireless data collection is delivered through the Inovonics platform and Tapwatch software, with hardwired systems supporting telephone-modem remote reading.

EMS monetizes through three streams: sale of proprietary submetering hardware, professional installation services (site survey through post-installation support), and training/support services for approved distributors. Pricing is quote-based and undisclosed, structured as multi-year contracts, with the company claiming typical investment recovery within twelve months and 80% utility cost recovery for property managers. Go-to-market combines direct enterprise engagement with property managers, housing authorities, and developers alongside an approved-distributor channel (notably Guardian and ista) and a flagship strategic relationship with Trane for HUD energy performance contracting. The company is privately held, with no institutional investors or parent company, and operates entirely within the United States. EMS participated in the development of ASHRAE Guideline 8-1994, the industry-standard reference for energy cost allocation in multiple-occupancy residential buildings, and its electric meters carry ANSI revenue-grade and UL safety certifications.

Name

Energy Metering Systems

Legal name

Energy Metering Systems, Inc.

Website

https://emmsi.com

Company type

Private

Founded year

1981

Operating status

Operating

Headcount range

1–10 employees

Short description

Energy Metering Systems designs, manufactures, and installs proprietary submetering and heat-allocation hardware — including the G.A.S. gas allocation family and ANSI-certified electric submeters — for U.S. multi-family residential, HUD, military, student, and commercial properties, selling through distributors and direct enterprise channels.

Ownership category

akta.pro rank

Product category

Energy Submetering and Heat Allocation

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

AMI Smart Meters (Electric) & Meter Hardware (EUADAFAA)

Keywords

• Submetering systems
• Heat allocation meters
• Electric submeters
• Temperature monitoring systems
• Multi-family utility metering

Headquarters

HQ city

Colorado Springs

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Submetering Hardware Sales: Sale of proprietary energy allocation meters including GAS heat allocation meters, electronic electric submeters (ER-32, ER-64, E12 P), and temperature monitoring systems to multi-family residential properties.
2. Installation Services: Full installation services for submetering systems including site surveys, technical installation, and post-installation support to distributors and end customers.
3. Training & Support Services: Education and training of products to approved distributors, including technical knowledge, installation guidance, and utility billing setup consulting.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels3 records

Core offering

Energy Metering Systems (EMS) designs, manufactures, and installs submetering and temperature monitoring systems for multi-family residential and commercial buildings. The company's core offerings include proprietary G.A.S. heat allocation meters, electronic kWh submeters (wireless and hardwired), and TMON/Comfort Monitor temperature monitoring systems, along with installation, warranty, training, and utility billing data services.

Product overview

Energy Metering Systems offers a comprehensive submetering and temperature monitoring product portfolio for multi-family residential properties. The core offerings include: (1) G.A.S. Heat Allocation Meters — a family of wireless time/temperature-based BTU meters (G.A.S.T, G.A.S.TT, G.A.S.TTA, G.A.S.TTP, G.A.S.TT3) for baseboard heating, fan coils, furnaces, and domestic hot water; (2) Electronic Submeters — wireless (E12 P/E13 P) and hardwired (ER-32/ER-64) kWh electric meters with remote reading via telephone modem or Inovonics/Tapwatch wireless platform; and (3) TMON and Comfort Monitor temperature monitoring systems for energy conservation. Services include installation, warranty support, distributor training, and utility billing data reporting. All products share the Inovonics wireless data collection infrastructure and Tapwatch software platform.

Differentiator

Problem solved

Functional benefit

Brands

• TMON (Temperature Monitoring System): Temperature monitoring system for multi-family housing that measures average air temperature each hour with data reporting each 24 hour period.
• G.A.S. (Gas Allocation System)
• Comfort Monitor

Products and services

• G.A.S. Heat Allocation Meters Complete solution for residential energy allocation measuring gas consumed for heating and hot water. Uses wireless technology and microprocessor-based allocation meters to accurately allocate gas costs based on runtime and/or temperature data. Includes model variants G.A.S.T (forced hot air furnaces, fireplaces), G.A.S.T DHW-T (domestic hot water via flue thermistor), G.A.S.TTA (baseboard hydronic heating), G.A.S.TTP (pneumatic/Danfoss non-electric zone valves with variable water flow), and G.A.S.TT3 (three-speed fan coil systems measuring BTUH for heating and cooling).
• Electronic Submeters Wireless and hardwired electric metering systems for multi-family residential and commercial buildings to measure individual electric consumption and increase Net Operating Income. The product family includes wireless single/three-phase E12 P/E13 P meters and hardwired multi-input ER-32/ER-64 systems.
• E12 P/E13 P Wireless Electric Meter Wireless single or three-phase electric meter with 900 MHz spread spectrum transmitter, revenue grade accuracy, LCD display, and interface to Inovonics Tapwatch wireless meter reading system. Supports 120/240 or 120/208 voltage inputs. Meets ANSI C12.1 and C12.16 National Accuracy Standards.
• ER-32 and ER-64 Electronic kWh Submetering System Multi-input kWh electric meter with remote reading capability for 120/240V single-phase and 120/208V two/three-phase panels. Supports up to 32 (ER-32) or 64 (ER-64) current transformer inputs with integrated 96k onboard modem for telephone-based data retrieval and ANSI C12.16-1991 accuracy certification. Capable of metering 100+ electrical panels and in excess of 1,000 panels per system.
• TMON Temperature Monitoring System Temperature monitoring system with wall mount installation adjacent to existing thermostat. Measures average air temperature hourly with ±0.5°F accuracy, reporting data every 24 hours via Inovonics wireless repeater network. Used by housing authorities to detect heating anomalies, identify alternate heating sources, and detect thermostat tampering.
• Comfort Monitor Systems Temperature control and monitoring systems providing innovative energy reduction without submetering. Generates valuable energy information to modify resident behaviors and promote energy conservation.
• Installation and Warranty Services Complete submetering services including professional installation, warranty service, and training for distributors. Includes site surveys, technical installation, and post-installation support.
• Training Services Education and training of EMS products for approved distributors including site surveys, technical knowledge, installation guidance, and utility billing set-up consulting.
• Utility Billing Data Services Bi-weekly energy consumption reports identifying potentially problematic units, enabling generation of maintenance work orders and inspections for housing authority clients.

Quantifiable outcome

• 80% cost recovery on electric and gas utilities
• +3 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

AI capability3 records

Feature5 records

Partnerships

Five partnerships are on record, tiered core and flagship.

• GuardiancoreChannel Partner/ Reseller/ DistributorGuardian is an approved distributor of Energy Metering Systems products, selling EMS submetering solutions to multi-family housing properties.
• istacoreChannel Partner/ Reseller/ Distributorista is an approved distributor of Energy Metering Systems products, providing EMS energy allocation and submetering solutions to residential properties.
• TraneflagshipStrategic or Co-development PartnerTrane partners with EMS for the Trane-GHA Energy Performance Contract, using EMS equipment for the Geneva Housing Authority project. EMS provides energy information critical to long-term financial success and supports HUD performance contracts with measurement at source.
• InovonicscoreTechnology or IntegrationInovonics provides the industry standard wireless platform for EMS products, including the Tapwatch hardware/software system and 5201 Ext transmitters for data transmission from GASTT, GASTT3, and other wireless metering modules.
• Tapwatch (Inovonics)coreTechnology or IntegrationTapwatch hardware/software system used with EMS wireless metering products for data collection, transmission, and monitoring of heat allocation and electric submetering systems.

Scale indicators6 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Kamstrup: Danish manufacturer of smart metering solutions for heat, electricity, water, and gas with a strong presence in heat cost allocators. Competes with EMS in heat allocation meters but serves a broader international utility and district heating market.
• Elster Group (Honeywell): Manufacturer of gas, electricity, and water metering solutions under Honeywell. Provides broader utility-grade metering infrastructure that overlaps with EMS's electric submeter products at the commercial scale.
• Landis+Gyr: Large-scale smart meter and grid management provider for utilities worldwide. Overlaps with EMS in electronic electricity metering but targets utility-side AMI rather than the multi-family sub-metering niche.
• Itron: Global smart metering and utility network infrastructure provider covering electric, gas, and water AMI. Enters the multi-family space indirectly through utility-side AMI deployments that compete with EMS's sub-metering approach.
• Diehl Metering: European manufacturer of metering solutions for heat, water, and gas with substantial heat cost allocator product lines. Comparable to EMS in heat allocation technology but operates at a larger scale with broader geographic reach.

Direct peers

• Axiom Metering Solutions: Submetering solutions provider for multi-family residential and student housing, offering electric, water, and gas submetering with billing software. Competes head-to-head with EMS in the multi-family sub-metering space, particularly in new construction and retrofit projects.
• Measurlogic: Submetering hardware manufacturer focused on electric and BTU metering for multi-tenant buildings. Overlaps with EMS in electronic submetering and energy allocation products for the multi-family residential market.
• ista: International submetering and energy services company that provides heat cost allocators, water meters, and energy billing services for multi-family residential. Functions as both an EMS distributor and a direct competitor with overlapping hardware and billing offerings across Europe and North America.
• Quadlogic Controls Corporation: Designer and manufacturer of multi-tenant electric submetering systems for apartments, condos, and commercial buildings. Directly competes with EMS in the multifamily electric submeter market with comparable wireless and hardwired product lines.
• Hydrotech Systems (HSA): Submetering and utility management services provider for multi-family properties, including gas, electric, and water metering. Comparable target market and product portfolio to EMS's multi-family residential focus.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance6 records

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 Energy Metering Systems