What Is Smart Metering? How It Works, Types & Benefits

Smart metering is the digital process of measuring, collecting, transmitting, and analyzing utility consumption data across gas, water, and electricity. Smart metering systems replace traditional manual meter reading with automated, near-real-time data exchange, enabling remote monitoring, meter reading, and data transmission across all utility types. 

It’s a core component of modern utility infrastructure. Smart metering enables Advanced Metering Infrastructure (AMI), an integrated, bidirectional communication system linking utility providers with consumer smart meters. It’s an essential component of modern smart grid systems and is the backbone of modern IoT-enabled utility management.

Smart metering systems are widely used because they can address multiple pain points across utility markets: billing accuracy, operational efficiency, energy and water efficiency and conservation, and leak and outage detection. In this article, we’ll consider in more detail what smart metering is, how it works, the various types of smart metering, and the many benefits of this approach.

What is Smart Metering?

Smart metering is an entire infrastructure and operational process ecosystem. It combines physical smart meters, communication protocols, data management platforms, and consumer interfaces into a single ecosystem.

What is a Smart Meter?

Smart meters are digital devices that automatically record utility consumption. They measure usage at regular intervals and transmit consumption data remotely. They can support gas, water, and heat measurement. 

What is Smart Metering Technology?

Smart metering technology combines physical smart meters, communication networks, data management platforms, and consumer interfaces or apps into a single integrated ecosystem. 

How Automated Meter Reading is Different from Smart Metering (AMI)

In AMR, there is only one-way communication between the meter and the utility; the meter can send consumption data forward but cannot receive any communications. Typically, AMR systems only allow periodic reads.

This is fundamentally different from AMI, which enables two-way communication, alerts, and near real-time monitoring. As AMI meters can receive communications from the utility, this allows for firmware updates and remote diagnostics. 

How Does Smart Metering Work?

Smart metering is simple in concept and relies on four key steps: data collection, data transmission, central data processing, and utility and consumer access. Each of these processes relies on a different layer of the overall smart metering infrastructure. 

Step 1: Data Collection

Smart meters are the backbone of smart metering. Without smart meters collecting the physical consumption data, smart metering is impossible. Each utility type uses slightly different kinds of smart meters, but the principle is the same: through a combination of sensors and digital measurement technologies, smart meters accurately record gas, electricity, or water consumption.

Step 2: Data Transmission

Automated data transmission is one of the core benefits of smart metering over traditional manual approaches. After recording consumption data, the smart meter automatically sends the information to a central platform through a communication network. This allows utilities, property managers, and service providers to access meter readings remotely without visiting the site.

Step 3: Central Data Processing

The collected data must be sent to a central location for processing, and this is the role of the central data platform. Such utility head-end systems and cloud platforms receive, validate, and analyze consumption data. This layer is where the core benefits of smart metering arise, as these central data platforms analyze data from meters to identify various anomalies, including leaks, power outages, tampering, and unusual usage patterns.

Step 4: Utility and Consumer Access

Processed data sent from the data management platform can then be used by utilities, property owners, and residents for multiple purposes. Utilities typically use this data for billing, usage forecasting, maintenance, and load balancing.

Below is a simple graphical representation of how smart metering works across its four-stage process:

Types of Smart Metering by Utility

What is smart metering used for? The answer varies by industry, and use cases differ even within these contexts. Smart metering is used across industries to support automated billing, monitor consumption data, improve operational efficiency, detect anomalies, improve sustainability, and meet regulatory requirements.

Here, we’ll consider electricity, gas, water, and thermal (heat) metering separately to better understand how and why each type of smart metering is used.

Smart electricity metering is a mature, globally deployed category with real-world use cases spanning residential utility billing, commercial office towers, industrial energy monitoring, and renewable energy integration. Smart electricity meters measure energy consumption, voltage, current, frequency, load demand, and, in some advanced deployments, power quality. 

What smart electricity monitoring is used for:

• Billing
• Outage management
• Load forecasting
• Demand response programs

Smart gas metering measures gas consumption volume, flow irregularities, and in some deployments, pressure conditions. Commonly used in residential homes and industrial settings.

What smart gas metering is used for:

• Residential gas billing
• Industrial gas distribution networks
• Remote infrastructure monitoring 

Smart water metering measures water flow and consumption in near real-time. Flow monitoring involves continuous measurement of water usage, which enables trend analysis and leak detection. Commonly used in multifamily developments, apartment buildings, mixed-use properties, and municipal contexts.

What smart water monitoring is used for:

• Abnormal flow detection
• Leak detection
• Billing accuracy
• Conservation and sustainability

Smart thermal/heat metering is widely used in centralized heating and cooling systems, and it measures thermal energy usage. Commonly used in campuses, hospitals, mixed-use buildings, and district energy systems.

What smart thermal metering is used for:

• Fair billing
• Energy efficiency
• Improving maintenance visibility

Although each utility type uses different measurement technologies, all smart metering systems share the same core objective of automated data collection, remote monitoring, operational efficiency, and improved visibility into utility consumption. 

Key Components of Smart Metering Systems

The core components of smart metering systems are shared across utility types. In general, these components include the physical smart meter infrastructure, the communication network for IoT connectivity, the meter data management platform (MDM) for data management and processing, and any consumer-facing interfaces.

Smart meters are the physical devices that capture consumption data. The exact construction and technologies used in these devices differ across and within industries, but they all perform the same core function: collecting data.

Communication Networks are necessary for physical smart meters to transmit their data to central servers. There are many communication networks used for IoT connectivity, including LoRaWAN, NB-IoT, and other cellular approaches. Typically, smart devices are fitted with communication modules that enable them to connect to the network. Communication networks enable smart meters to communicate their data to central management platforms.

Meter Data Management (MDM) Platforms

Meter data management platforms enable the advanced functionality of smart metering systems. They’re responsible for data storage, analytics, billing integration, and various reporting. They enable leak detection, detection of other anomalies and irregular usage patterns, and support demand forecasting. They receive the data collected by smart meters via the communication network and can output processed data to consumer-facing products.

Consumer-Facing Interfaces

Apps, connected dashboards, and alerts systems enable utilities, property owners, and residents to access processed consumption data. This processed data is supplied and displayed in ways that make it more useful to end consumers, such as detailed consumption reports and comparative histories.

Benefits of Smart Metering

Smart metering has emerged as a popular choice because it offers numerous tangible benefits to multiple stakeholder types across all utilities. The core benefits are:

• Billing

Billing disputes are a common issue across utility metering contexts. Modern smart meters provide highly accurate consumption data, enabling highly accurate billing. This reduces usage estimation across the board and leads to fewer disputes, as consumers can see how their usage correlates to higher or lower bills.

• Operational efficiency

Manual inspections, meter readings, and data transmission are expensive and time-intensive. Smart infrastructure eliminates the need for such routine physical interventions, reducing labor costs. Automation of this process supports better allocation of human resources and can help make operational budgets more efficient.

• Visibility

Poor visibility over utility usage is a common challenge across utility types. Smart metering provides comprehensive usage tracking, which supports behavioral optimizations in consumers and enables far better cost control than traditional methods. Improved visibility allows better allocation of maintenance budgets and enables more strategic, data-driven decision-making.

• Leak & outage detection

Continuous monitoring and real-time alerts enable faster maintenance responses across a portfolio or metered property. eaks or power outages can be identified, reported, and followed up on immediately without waiting for physical inspections or reports. This enables a more proactive approach to maintenance and repair.

• Demand response support

Effective, reliable monitoring of resources enables much better response to demand, even where supply is less predictable, as in some renewable energy contexts. This enables grid balancing, peak demand management, and supports renewable integration.

• Environmental & regulatory

Smart metering supports more efficient water and energy use, which has multiple environmental benefits. Many jurisdictions now require enhanced sustainability reporting across multiple industries, which an effective smart metering system supports. 

Smart Metering vs Traditional Metering

Feature	Traditional Metering	Smart Metering
Reading Method	Manual	Automated
Billing Accuracy	Estimated/period	Real-time/
Data Frequency	Monthly/Yearly	Near real-time
Communications	One-way	Two-way
Anomaly Detection	Limited	Automated
Consumer Visibility	Low	High

Smart metering and traditional metering differ significantly in several key areas. The most obvious is in the level of automation — traditional approaches require manual meter readings and data transmission. Smart metering setups automate this whole process. In general, the differences between smart metering and traditional metering can be summed up as automation, accuracy, and efficiency.

Smart Metering Communication Technologies

Smart metering technology requires IoT connectivity. Each deployment handles this differently, and there will be some differences between utilities, too, but the problem of connectivity is one that every smart metering setup has to solve.

So how do smart meters communicate? In modern systems, there are multiple popular communication protocols to choose from, each with its own advantages and disadvantages, making them well-suited to particular types of deployment. In this article, we’ll discuss LoRaWAN, NB-IoT,, and Wireless M-Bus.

LoRaWAN

LoRaWAN is a low-power, wide-area network (LPWAN) designed for long-range communication with low-power devices, such as smart meters. It operates on unlicensed radio frequencies, allowing cost-effective, scalable, and flexible private deployments using LoRaWAN gateways. It works well in both urban and rural environments and balances power requirements, range, and cost effectively.

NB-IoT

NB-IoT is an LPWAN optimized for low-bandwidth IoT devices. Unlike LoRaWAN, NB-IoT leverages existing cellular infrastructure and requires a cellular subscription, enabling rapid, simple deployments on operator-owned and managed networks. NB-IoT can work well in cities and dense urban environments with strong cellular coverage.

Wireless M-Bus (wM-Bus)

Wireless M-Bus is a radio-based communication standard widely used for remote meter reading in Europe. It offers low power consumption, good interoperability, and flexible deployment. However, compared with LPWAN technologies such as LoRaWAN and NB-IoT, it typically provides a shorter communication range.

Smart Metering Applications

Smart metering technology is a key infrastructure that supports operational visibility, automation, resource efficiency, and digital transformation across utilities and buildings in multiple real-world contexts. As smart metering systems continuously collect and transmit consumption data, they can support a wide range of operational and analytical applications across multiple industries. 

Here are some core use cases for smart metering.

Utility Scale Electricity Monitoring

Globally, utility-scale electricity smart metering is one of the largest smart metering deployments. Millions of smart electricity meters are connected through advanced metering infrastructure to form part of modern smart grids. Metering is used for:

• Demand monitoring: utilities collected electricity consumption data to help forecast peak demand periods to better manage electricity generation and consumption
• Demand response programs: utilities encourage customers to reduce usage during high-demand periods, such as through dynamic pricing and time-of-use tariffs using automated load management systems
• Outage detection: this is an extremely important use case in which smart meters can automatically notify utilities during outages, improving restoration response times and enabling better visibility into affected service areas, while also sending alerts to consumers
• Renewable energy integration: smart metering helps utilities manage distributed energy resources such as solar, battery storage, and EV charging systems, where bidirectional data improves smart grid coordination

Water Submetering in Multifamily and Commercial Properties

Water submetering is one of the fastest-growing smart metering applications in mutlifamily and mixed-use contexts. Instead of measuring only total building water consumption, submeters measure water usage at the unit level. In water submetering, smart metering enables:

• Tenant billing: residents are billed based on actual water consumption rather than shared allocation formulas, improving billing accuracy, fairness, and utility cost recovery for property owners
• Leak detection: continuous monitoring helps identify hidden leaks, running toilets, burst pipes, and abnormal flow as soon as they occur through automated alerts, enabling property managers to respond quickly before damage escalates
• Water conservation: access to water consumption data encourages water conservation as residents become more aware of usage patterns
• Remote monitoring: property owners can monitor entire portfolios remotely, which eliminates manual meter readings and inspections

Gas Distribution Network Monitoring

In gas, smart metering improves operational visibility and reduces manual infrastructure management. In this context, submetering enables:

• Automated meter reading: gas consumption data is transmitted remotely, reducing field visits and associated costs
• Infrastructure monitoring: utilities gain better insight into network performance, which is important as unusual usage patterns could indicate leaks or other operational issues; this is especially important in rural or remote gas metering, where physical monitoring can be impractical
• Remote service operations: some smart gas metering systems support remote connection and disconnection, which improves operational efficiency

District Heating and Cooling Systems

District heating and cooling networks distribute thermal energy from centralized plants to multiple buildings. Utilizing smart metering enables:

• Fair cost allocation: heat meters help allocate heating and cooling costs fairly across tenants and buildings in a metered location, such as in apartment complexes or mixed-use developments with different tenant and unit types
• Energy optimization: facility managers can analyze usage trends to optimize heating schedules and reduce thermal energy waste in properties such as hospitals and university campuses
• Maintenance visibility: smart metering can identify inefficiencies or abnormal energy consumption patterns, enabling better allocation of maintenance resources, which can be especially helpful across large properties such as university campuses or hospitals

Smart Cities and Integrated IoT Infrastructure

Smart cities increasingly rely on connected infrastructure requiring real-time operational data. In this context, smart metering systems act as distributed IoT endpoints, enabling:

• Integrated utilities infrastructure: smart utility metering provides continuous infrastructure visibility across a range of utility types
• Intelligent street lights: smart grids and connected meters support adaptive lighting systems, which can support resident safety at night as well as environmental goals
• Environmental monitoring: cities can integrate metering data with air quality monitoring, weather systems, and sustainability analytics as part of a holistic environmental monitoring program
• Resource optimization: municipalities use meter data to better manage water losses across a city, energy demand, and infrastructure maintenance
• Smart building integration: smart metering systems are often integrated into building management systems, HVAC controls, occupancy analytics, and ESG reporting platforms

AMI vs AMR: What’s the Difference in Smart Metering?

What’s the difference between AMI and AMR? Both AMR and AMI automate meter reading, but AMI offers more advanced capabilities. AMR (Automated Meter Reading) automatically collects meter data, reducing the need for manual readings. AMI (Advanced Metering Infrastructure) builds on this by enabling two-way communication, real-time monitoring, alerts, remote management, and data analytics. Simply put, AMR tells you how much was used, while AMI helps you understand what is happening across the network.

AMR	AMI
One-way communication	Two-way communication
Periodic data collection	Continuous/near-real-time data collection
Limited Analytics	Advanced analytics
Limited	Instant alerts

Smart Metering Companies

The smart metering market is diverse, encompassing a range of vendors, from hardware manufacturers to AMI providers and software and network providers. Some companies operate within a single utility type, whereas others offer solutions across utilities. Here, we’ll consider a handful of major companies for a broad look at the market.

Landis+Gyr
Supplies electricity smart metering infrastructure.

Honeywell Smart Energy
Develops AMI and utility software platforms.

Aclara: Provider of smart gas metering and AMI communication technologies.

Diehl Metering: Diehl provides smart water and energy metering systems.

Itron

Itron provides smart energy and water solutions.

Sensus

Sensus specializes in smart water metering, electric metering, and utility communications infrastructure.

Next Meter
Next Meter specializes in water submetering. 

Mainlink’s Smart Utilities Metering Solution

Mainlink operates as a smart utilities metering and submetering infrastructure provider designed to support accurate, scalable consumption measurement across water, heating, and cooling use cases. Mainlink is more than a simple standalone device vendor: our solution provides an integrated stack that combines metering hardware, connectivity infrastructure, and cloud-based data processing to deliver continuous visibility in a hardware and vendor-agnostic system.

At the hardware layer, our solution utilizes ultrasonic metering technology to enable high-precision measurement, which improves long-term reliability and accuracy. Data collected by the meter is transmitted via LoRaWAN, an LPWAN well-suited for large-scale deployments where wired infrastructure would be costly or impractical. 

All consumption data is passed through our cloud platform, which acts as the central intelligence layer for the system and enables monitoring, reporting, and analytics across units, properties, or entire portfolios. Residents and tenants can access consumption data via a mobile app designed to make utility consumption understandable.

Together, these components form a flexible system fit for rapid deployment across a range of building and property types with a strong focus on utilities and submetering applications. 

Frequently Asked Questions

What data does a smart meter collect besides consumption readings?

Many smart meters collect more than usage data. Depending on the technology, they can also detect leaks, tampering, reverse flow, low battery conditions, communication issues, and other operational events that help operators monitor system health and respond to problems more quickly.

Can smart meters be hacked or tampered with?

While it is possible, modern smart meters have extensive cybersecurity features such as encryption, tamper alerts, and validation processes that make them secure.

How long do smart meters last?

Modern ultrasonic smart meters last between 10-20 years depending on the utility and technology used.

Do smart meters require internet access at the property?

No. Most smart meters use dedicated communication networks to transmit data and do not require a Wi-Fi connection or internet service at the property. Depending on the deployment, communication may be provided through LoRaWAN, NB-IoT or other metering technologies.

Are smart meters mandatory or optional?

This varies by country, utility, and local regulations. Some jurisdictions mandate water meters in some contexts, while others do not. It’s important to be aware of local laws and codes.

What are the downsides of smart metering?

Some users have privacy concerns, others worry about deployment costs, and others worry about interoperability. Any concerns should be discussed with a trusted provider.

Will my utility bills go up with a smart meter?

Smart meters don’t increase utility rates; only increased consumption or rate changes do. In many cases, usage visibility can help reduce consumption and, therefore, bills.