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reev EMS | PV Integration Overview

In this article, you will learn how to use your solar energy intelligently for your charging infrastructure with the activated reev Energy Management System (reev EMS). The prerequisite is that the reev EMS is already activated for your site.

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Written by Kundenteam reev

Integrating your photovoltaic (PV) system into reev EMS allows for more efficient use of your self‑generated solar power. Surplus energy is specifically used for charging electric vehicles (EVs). This increases your energy efficiency, reduces electricity costs, promotes sustainability, and enhances the overall performance of your energy infrastructure.


Benefits of using a PV system

  • Maximize solar energy usage
    Increase self‑consumption by using generated PV power to charge your vehicles instead of feeding it into the grid at low tariffs.

  • Reduce energy costs
    Prioritize the use of free solar energy to sustainably lower your electricity expenses.

  • Smart charging
    Charge using available PV surplus or schedule charging sessions based on expected solar generation.

  • Promote sustainability
    Utilize clean energy sources, reduce CO₂ emissions, and support the transition to renewable energy.


Two ways to make the most of your solar energy

With reev EMS activated, you can integrate your PV system into your charging management in two different ways:

  • Local PV Integration – real‑time use of locally available PV power with dynamic load management.

  • PV‑optimized Charging – forward‑looking charging planning based on solar generation and energy demand forecasts.


Recommendations and use cases

  • Local PV Integration is recommended for sites with an existing metering setup (power meter + Teltonika Router) and stable PV production. Ideal if you want to control solar power directly on‑site.

  • PV‑optimized Charging offers a faster start without additional hardware. It enables intelligent scheduling of charging sessions, uses solar power more cost‑efficiently, and ensures that charging demand is always met – even with fluctuating generation or multiple charging points.

Both options increase your self‑consumption ratio, reduce energy costs, and support the sustainable operation of your charging infrastructure.

Comparison of both options:

Criterion

Local PV Integration

PV‑optimized Charging

Functional principle

Real‑time control based on measured PV generation at the site.

Cloud‑based, predictive planning based on PV and consumption forecasts.

Type of control

Reactive – uses current PV surplus directly.

Proactive – plans charging intelligently in advance.

Hardware

Power meter + Router required.

No on‑site hardware required.

Setup & effort

Requires local infrastructure setup.

Quick, digital activation via reev Platform.

Charging time planning

No predictive scheduling.

Smart scheduling for maximum PV utilization.

Cost efficiency

Saves costs when PV surplus is available.

Optimizes charging times and minimizes grid usage for higher savings.

Charging demand

Charging only when PV surplus is available.

Charging demand always covered – on time and in full.

Ideal for

Sites with stable, measurable solar generation.

Fast implementation for flexible or multi‑station sites.

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