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Bi-directional Energy Meters Manufacturer.

High-performance smart metering infrastructure for global utility networks and sustainable energy grids.

Product
Narrative

Technical Innovation & Quality Heritage

YTL’s Bi-directional Energy Meters are the essential measurement backbone for the modern "Prosumer" economy. As more residential and commercial buildings integrate solar PV systems and battery storage, the flow of electricity is no longer one-way. Our manufacturer-certified meters are specifically designed to measure four-quadrant energy flow with high precision, tracking exactly how much power is pulled from the grid (Import) and how much excess renewable energy is fed back (Export). Zhejiang Yongtailong utilizes advanced digital sampling to ensure that reactive power and active power are recorded separately for both directions. This level of transparency is critical for participation in Feed-in Tariff (FiT) programs and net-metering schemes, ensuring that users are accurately compensated for the green energy they contribute to the national infrastructure.

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Technical Datasheet

Technical CategoryBi-directional Specs
Measurement ModesImport Energy, Export Energy, Net Energy, 4-Quadrant
AccuracyClass 1.0 (Active) / Class 2.0 (Reactive)
Phase TypeSingle Phase or Three Phase Models available
CommunicationWi-Fi, RS485 (Modbus), LoRaWAN, NB-IoT
StandardsIEC 62053-21, MID EN50470 (Optional)

Product Application

  • Residential Solar Net-Metering
  • EV Charging with V2G
  • Battery Storage Optimization

Residential Solar Net-Metering

Designed for solar-equipped homes where energy is both consumed from and supplied to the grid. This meter provides a legal, billable record of the "Export" energy, allowing homeowners to receive credits or payments from their utility provider. The dual-register system ensures that your solar investment is accurately tracked, maximizing your financial returns based on your local net-metering policy.

EV Charging with V2G

Ideal for the next generation of Vehicle-to-Grid (V2G) applications. These meters track the energy flow between the electric vehicle battery and the house. When the car acts as a power source for the home during peak hours, the meter accurately records this discharge, helping users manage their mobile energy storage as part of a smart home ecosystem.

Battery Storage Optimization

Perfect for integrated Home Energy Storage Systems (HESS). The meter provides real-time bi-directional data to the storage inverter, enabling it to decide when to store excess solar power and when to release it to the grid for profit, ensuring that the entire system operates at the highest possible economic efficiency.

Product Advantages

True 4-Quadrant Measurement

Provides a complete picture of electrical energy flow, including active and reactive energy in both directions, which is essential for advanced grid analysis and solar efficiency tracking.

Visual Flow Direction

The high-contrast LCD features intuitive icons showing the current direction of energy flow, allowing users to see at a glance if they are currently selling energy or buying it.

Revenue-Grade Accuracy

Built to strict international standards, ensuring that the utility-side and consumer-side measurement data are perfectly synchronized, preventing billing disputes in net-metering schemes.

Frequently Asked Questions

  • Q: Does the meter subtract export from import automatically?

    A: Most utilities require separate "Import" and "Export" registers for billing. However, our meters also provide a "Net" value register that shows the difference between the two for your personal tracking.

  • Q: Is this meter compatible with all solar inverters?

    A: Yes, it measures the electrical flow at the grid connection point, so it works independently of your inverter brand, though it can also communicate with many via RS485.

  • Q: Can I see my solar export data on my phone?

    A: Yes, if you choose a Wi-Fi or Cellular-enabled bi-directional meter, you can track both your consumption and your solar production through our mobile application.

  • Q: What is reactive power in a solar system?

    A: Solar inverters can sometimes produce reactive power that affects grid stability. Our meters track this data, which is often a requirement for commercial solar grid-tie agreements.

  • Q: Does it have anti-tamper features for both directions?

    A: Absolutely. Our meters feature advanced tamper detection that works regardless of the energy flow direction, protecting against magnetic interference and cover opening.

Welcome To A National High-tech Enterprise

Established in 2000, Zhejiang Yongtailong Electronic Co., Ltd. is located in Tongxiang. As a professional Bi-directional Energy Meters manufacturers and Bi-directional Energy Meters suppliers in China , YTL designs and produces electronic energy meters which are cost-efficient and ideal for the use in solutions for AMR/AMI at residential as well as industrial applications.YTL was one of the first companies in the domestic market with which had an internal R&D department as well as international sales business. Since our foundation in 2000 we have grown to a manufacturer which complies and meet to many specifications from our national and international partners. At present our export volume makes us a leading company for technology and product export to more than 60 countries throughout the world.YTL is devoted to develop and design all types of electronic energy meters, concentrators and solution applications. With a combined design of the special accessories, we have successfully developed series of competitive products of small size, multifunction, low power consumption and excellent performance. We offer a one-to-one service to our partners. With annually over 68 projects that are successfully finished and holding over 500 patents of design rights, we are also advanced in the technology and patents of current sampling.

  • 2000

    Established In

  • 500+

    Employees

  • 60+

    Export
    Countries

  • 500+

    Patent

  • 10million+

    sets per year

YTL Honor

  • MID
  • KEMA
  • DLMS
  • IEC
  • KEMA
  • SGS

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