white energy GmbH - Your tenant electricity solution

weEMS - The all-in-one solution
for smart building portfolios

weEMS
The all-in-one solution
for smart building portfolios

Self-sufficient energy management. Record consumption data. Control processes. Reduce CO₂.

Self-sufficient energy management.
Record consumption data.
Control processes.
Reduce CO₂.

we
MONITOR

Transparency across all
consumption flows in real time. Benchmarking of the portfolio and data basis for the refurbishment path.

we
SHARE

Direct supply and billing of tenants with local PV electricity. Lower electricity costs for tenants and attractive returns for landlords.

we
CONTROL

Optimization of
consumption flows in the portfolio.
Reduction of energy costs and
optimization of the CO2 footprint.

we
DATA

Tools for analyzing building consumption and CO2 footprints, central KPIs, consumption data for ESRS/ESG reporting and data export.

weMONITOR

Transparency across all consumption flows
in real time. Benchmarking of the portfolio and data basis for the refurbishment path.

weSHARE

Direct supply and billing of tenants with local PV electricity. Lower electricity costs for tenants and attractive returns for landlords.

weCONTROL

Optimization of
consumption flows in the portfolio.
Reduction of energy costs and
optimization of the CO2 footprint.

weDATA

Tools for analyzing building consumption and CO2 footprints, central KPIs, consumption data for ESRS/ESG reporting and data export.

Our holistic approach

F a c i l i t y

P r o p e r t y

P o r t f o l i o

https://white-energy.eu/wp-content/uploads/2025/08/Bild2.png

weCONSULT

Energy
and metering concept

Energy and digitalization concept to optimize cost and
CO2 reduction.

Digital recording
of the energy flows

Transparency across all consumption flows in real time. Benchmarking of the portfolio and data basis for the refurbishment path.

Distribution of locally generated energy

Direct supply and billing of tenants with local PV electricity. Lower electricity costs for tenants and attractive returns for landlords.

Digital control
of the energy flows

Optimization of consumption flows in the portfolio. Reduction of energy costs and optimization of the CO2 footprint.

Reporting
and benchmarking

ESG-compliant evaluation of consumption data including CO2 value determination, reporting obligations, CO2 energy certificate.

weDATA

Provision of data

Audited building consumption certificate incl. CO2 emissions for processing service providers, auditors, banks.

Our holistic approach

Facility Property Portfolio

weCONSULT

Energy
and metering concept

Energy and digitalization concept to optimize costs and
CO2 reduction.

Digital recording
of the energy flows

Transparency across all consumption flows in real time. Benchmarking of the portfolio and data basis for the refurbishment path.

Distribution of locally generated energy

Direct supply and billing of tenants with local PV electricity. Lower electricity costs for tenants and attractive returns for landlords.

Digital control
of the energy flows

Optimization of consumption flows in the portfolio. Reduction of energy costs and optimization of the CO2 footprint.

Reporting
and benchmarking

ESG-compliant evaluation of consumption data including CO2 value determination, reporting obligations, CO2 energy certificate.

weDATA

Provision
data

Audited building consumption certificate incl. CO2 emissions for processing service providers, auditors, banks.

The modular platform for intelligent energy and data management

Your digital building management

weEMS

weEMS digitizes and optimizes all energy and consumption flows in residential and commercial properties.

Real estate owners and operators can thus...

...manage energy self-sufficiently
...reduce operating costs
...reduce CO2
...increase property value

Platform

SaaS solution
Own IoT hardware
Open system architecture
Modularly expandable
Cloud-based & scalable

Functions

Digitalization of all energy & consumption flows
Live data from different meter types
Control of complex consumption structures
Automated billing, including tenant electricity
ESG-compliant reports, AI-based forecasts

Added value

Complete process automation
Smooth integration into existing & new buildings
Reliable, testable data
Individual access for tenants, managers & service providers
Data is retained when changing service provider

Recording energy flows in real time

weMONITOR

The advanced concept of weMONITORmakes it possible to record, analyze and optimize energy flows in real time. Our system provides detailed insights into energy consumption and sources so that informed decisions can be made and energy efficiency maximized.

Near real-time energy flow data plus automatic notifications in the event of anomalies or unusual consumption patterns
Secure central data storage in a high-performance database in 15-minute intervals
Use comprehensive dashboards and reports for better decision-making and identification of optimization potentials

Send non-binding inquiry

Provision of billing-relevant data

Transparency of
energy flows

Automatic alerting
for anomalies

Permanent storage in
15 minute grid

Recording energy flows in real time

weMONITOR

Near real-time energy flow data plus automatic notifications in the event of anomalies or unusual consumption patterns
Secure central data storage in a high-performance database in 15-minute intervals
Use comprehensive dashboards and reports for better decision-making and identification of optimization potentials

Provision of billing-relevant data

Transparency of energy flows

Permanent storage in a 15-minute grid

Automatic alerting in the event of anomalies

Send non-binding inquiry

Falling electricity costs for
tenants and attractive returns
for landlords

Increasing the value of the property
Increase attractiveness and profitability

Increase sustainability
Avoidance of
CO2 emissions

Simple billing
Transparent and fair cost allocation

Decentralized and sustainable energy supply

weSHARE

With weMIETERSTROM, you benefit from a decentralized, sustainable and economical energy supply directly on site. Our model combines climate protection with economic efficiency and offers advantages for tenants, landlords and investors.

Reducing electricity costs for tenants through local PV power
Attractive returns through direct marketing of PV yields
Increasing the value of the property through a sustainable energy concept
Manager & tenant portal with self-service (tariffs, administration, billing)
Legal compliance incl. customs declarations
Flexible models: Full supply & shared building supply

Check your tenant electricity yield

Send non-binding inquiry

Decentralized and sustainable energy supply

weSHARE

Reducing electricity costs for tenants through local PV power
Attractive returns through direct marketing of PV yields
Increasing the value of the property through a sustainable energy concept
Manager & tenant portal with self-service (tariffs, administration, billing)
Legal compliance incl. customs declarations
Flexible models: Full supply & shared building supply

Lower electricity costs for tenants and attractive returns for landlords

Increasing the value of the property
Increase attractiveness and profitability

Simple billing
Transparent and fair cost allocation

Increasing sustainability
Avoiding CO2 emissions

Check your tenant electricity yield

Send non-binding inquiry

Intelligent control of all consumers

weCONTROL

Active energy management allows generators and consumers to be controlled dynamically in order to increase efficiency and reduce costs.

Intelligent control of PV, batteries, heat pumps & charging infrastructure
High energy efficiency with double-digit savings
More independence thanks to a higher degree of self-sufficiency
Sustainability through CO₂ reduction
Smart pricing: weather & price forecasts, variable electricity tariffs

Send non-binding inquiry

Up to 40% energy savings

Reduction of CO2 emissions

Increase degree of self-sufficiency

Reduction of
costs

Intelligent control of all consumers

weCONTROL

Using active energy management to dynamically control generators and consumers in order to increase efficiency and reduce costs.

Intelligent control of PV, batteries, heat pumps & charging infrastructure
High energy efficiency with double-digit savings
More independence thanks to a higher degree of self-sufficiency
Sustainability through CO₂ reduction
Smart pricing: weather & price forecasts, variable electricity tariffs

Up to 30% energy savings

Reduction of CO2 emissions

Reduction of costs

Increase degree of self-sufficiency

Send non-binding inquiry

Data CO2 emissions
per square meter

Data for ESG scoring systems

Certified data for CSRD/ESRS reporting

Maintaining the value of the property

*Corporate Sustainability Reporting Directive
*European Sustainability Reporting Standards

Precision & control for your energy & consumption data

weDATA

Holistic recording of energy and sustainability data with precise greenhouse gas assessments (GHG assessments) plus detailed insights as a basis for applying taxonomy principles and assigning objects to different sustainability categories.

Provision of building consumption data in the form of a "building consumption certificate", which can then be used for further sustainability reporting or bank disclosures - as required under the CSRD, for example
Compliance with the requirements of the European Sustainability Reporting Standard (ESRS)
Display of KPIs including CO₂ emissions per square meter
By continuously monitoring and optimizing the relevant key figures, you contribute to securing and increasing the value of your properties in the long term

Send non-binding inquiry

Precision & control for your energy & consumption data

weDATA

Provision of building consumption data in the form of a "building consumption certificate", which can then be used for further sustainability reporting or bank disclosures - as required under the CSRD, for example
Compliance with the requirements of the European Sustainability Reporting Standard (ESRS)
Display of KPIs including CO₂ emissions per square meter
By continuously monitoring and optimizing the relevant key figures, you contribute to securing and increasing the value of your properties in the long term

CO2 emissions per square meter

Data for ESG scoring systems

Maintaining the value of the property

Certified data for CSRD/ESRS reporting

*Corporate Sustainability Reporting Directive
*European Sustainability Reporting Standards

Send non-binding inquiry

white energy SaaS solution for your portfolioYour added value

Reduction in operating costs

Effective energy management of the real estate portfolio, realization of savings potential and significant reduction of energy and process costs

Benchmarking in the portfolio

Transparent comparison of costs and consumption to identify best practices and improve building performance

Compliance with regulatory requirements

The CSRD and the EU taxonomy identify energy consumption and greenhouse gas emissions as important indicators for performance evaluation

Attractiveness of real estate

The sustainability of the assets has a direct impact on interest in the properties and the occupancy rate

Real-time & traceable data

Consumption (building consumption), billing (tenant electricity) and assessments (ESRS, ESG, CO2) traceable from a database in the portfolio

Access to capital

Reducing financing costs while complying with regulatory requirements and achieving sustainable CO2 values

Tenant electricity - digital & automated

Automated monthly billing for all PV tenant electricity models Full supplier & GGV, PV and residual electricity allocation at 15-minute intervals in real time

Automated processes without system breaks in the portfolio

Integrated measurement, display, control, billing, analysis and reporting in one solution

Our reference system for intelligent energy managementThe HOUSE

In Irschenhausen, 20 kilometers south of Munich, sustainable energy management is already a reality. Our SaaS solution weEMS is fully implemented in "Das HAUS" - live, productive and in daily use.

All meters are digitally integrated and the entire consumption and generation structure is intelligently controlled and evaluated via weEMS. Tenant electricity is automated and billed monthly - including portal access for tenants, administration and facility management.

The building is completely self-sufficient in energy and demonstrates how self-sufficient, digital and sustainable building management already works on the market today.

"Das HAUS" serves as a reference system and demonstrates the performance of weEMS under real conditions.

Highlights at a glance:

Market-ready technology in productive use
Digitized meter and consumption data
Automated tenant electricity billing with monthly invoicing
Scalability to other buildings and portfolios
User-friendly portals for tenants, managers and FMs
CO₂ reduction and energy efficiency in operation
ESRS & ESG-capable database for modern reporting

"Das HAUS" is not a test environment - this is where weEMS is shown to work: under real conditions, with real consumers, in productive operation.

Our reference system for intelligent energy managementThe HOUSE

In Irschenhausen, 20 kilometers south of Munich, sustainable energy management is already a reality. We have fully implemented our SaaS solution weEMS in "Das HAUS" - live, productive and in daily use.

The building is completely self-sufficient in energy and demonstrates how self-sufficient, digital and sustainable building management already works on the market today.

"Das HAUS" is therefore our reference system - a place where you can experience the performance of weEMS live.

What you can experience live:

Market-ready technology in productive use
Digitized meter and consumption data
Automated tenant electricity billing with monthly invoicing
Scalability to other buildings and portfolios
User-friendly portals for tenants, managers and FMs
CO₂ reduction and energy efficiency in operation
ESRS & ESG-capable database for modern reporting

Visit us in Irschenhausen

"Das HAUS" is our reference system, not a laboratory. Here we show: weEMS works - under real conditions, with real consumers, in real operation.

Make an appointment now

News

To all news

weEMS Release 5.4 "Hamburg-Hertz" – Overview of new features

With the release of "Hamburg-Hertz," we are optimizing weEMS in the areas where operators, service providers, and tenants work on a daily basis: meters, monitoring, billing, and communication. The result is significantly faster, clearer, and more intuitive energy management. The new features of 5.4 at a glance Revised meter page – all information at a glance The new meter page combines generation, consumption, and status...

white energy is a partner of the Coalition X initiative for verifiable ESG building data

As part of the Coalition X initiative initiated by the ZIA (German Property Federation), a neutral trust framework is being created for the secure and standardized exchange of ESG building data - from the building to the bank - with the aim of reducing the effort and risks involved in the collection, verification and transmission of ESG data and thus strengthening the future viability and financing capability of the real estate industry. As a partner...

Clever integration of tenant electricity - from implementation to intelligent control with openEMS

🌞Become a white energy partner Many PV projects fail not because of the technology, but because of the integration. In our free webinar, we will show you in a practical way how to implement tenant electricity projects efficiently, including intelligent control with openEMS. Tuesday, November 25, 2025, 14:00 You can look forward to this: ✅ Practical insights for solar installers and project planners✅ Tips for a smooth...

weEMS Release 4.8 - now GGV-ready!

With the new "frankfurt-fuse" release, weEMS is taking a major step forward: in addition to the classic full supply, weEMS now also supports the shared building supply (GGV) - an efficient, modern alternative to the classic tenant electricity model. How GGV works at a glance:With shared building supply, several parties (e.g. tenants) in a building share solar power from a central PV system without having to pay for...

Success Story slashwhy

Digital energy management for the real estate industry - developed by white energy together with slashwhy white energy is actively driving digitalization in energy management in the real estate industry. Together with our technology partner slashwhy, we have developed a scalable system for the intelligent recording, analysis and optimization of energy flows in buildings. The modular system is already being used successfully and will be...

10 things we need to do differently in the energy world.

🌍 The energy world is changing, but too slowly. What do we need to do differently in 2025 to make progress truly tangible? 👉 Our 10 ideas – from practice, for practice.

ESG-KP standards: Live measurement as the key to reliable building data

white energy drives ESG-KPI standards forward: Live measurement as the key to reliable building data Kick-off for a new era of ESG data availability in the real estate industry: At this year's Real Estate Arena in Hanover on 15 May 2025, a new R&D initiative will be presented that paves the way for a legally compliant, standardized and tamper-proof exchange of ESG data in the real estate industry....

Tenant electricity - brake

Tenant electricity - what's really holding us back and how we can change it! 🔌 The tenant electricity market is growing - but what is really holding us back from launching major projects? Is it the legal hurdles? Or is it the uncertainty of taking the first steps? We have the answers - and we are ready to take the next steps with you...

Blackout worries in Spain

Blackout worries in Spain - a foretaste of what could become reality elsewhere. The current discussions about power outages show how quickly availability and security of supply can become unstable. Right now it is becoming clear that those who rely on local energy supplies have an advantage. With energy solutions including tenant electricity from white-energy.eu, we are making residential buildings fit for the future - directly generated electricity from the roof,...

Tenant electricity - 5 misconceptions that prevent many from taking advantage of this opportunity

Tenant electricity offers a sustainable, economical and future-proof solution for residential buildings - right on site. Nevertheless, there are many misunderstandings that unsettle landlords and tenants. We clear things up! 1. "Tenant electricity is only worthwhile for large residential complexes." Wrong! Many people believe that tenant electricity is only worthwhile for large residential complexes. But smaller apartment buildings can also benefit economically....

Transparency in tenant electricity - who sees what?

There are often uncertainties when it comes to tenant electricity: "Does my landlord have access to my consumption data?" The answer: No - all roles and rights are clearly defined! With weEMS, tenant electricity works fairly, securely and transparently: tenants see their own consumption data in detail - daily curves, peak times and potential savings are only visible to you. Landlords have no access to personal consumption data - you see...

Solar Peak Act 2025: New opportunities for tenant electricity

On February 14, 2025, the Federal Council passed the Solar Peak Act, which entails far-reaching changes for operators of photovoltaic systems. One of the most important consequences: The direct use of solar power will become even more economically attractive - and thus also the tenant electricity model! What will change as a result of the Solar Peak Act? 1️⃣ No feed-in tariff in the event of negative electricity prices If exchange electricity prices slip into negative territory, there is no feed-in tariff...

CO₂ price increase 2025: challenge or opportunity?

CO₂ price increase 2025: effects on energy supply and strategies for companies From 2025, the CO₂ price in Germany will be increased again, a measure that is part of the comprehensive strategy to reduce greenhouse gas emissions. The aim is to make fossil fuels less attractive and accelerate the switch to climate-friendly alternatives. But what does this mean for companies, property owners and...

Dynamic electricity tariffs

Efficient electricity consumption through dynamic electricity tariffs and intelligent energy management - savings of 20%! In December 2024, there was a so-called dark doldrums in Germany, which was accompanied by exceptionally high electricity prices. On December 4, the electricity price was 51.9 cents per kilowatt hour (kWh), while on the days of December 12 and 13, it peaked at up to...

white energy receives BSFZ research grant for weEMS software

We are very pleased to announce that white energy, in cooperation with our partner slashwhy, has received a research grant for the further development of our innovative software solution weEMS (white energy Energy Management System)! weEMS is an advanced energy management system that enables the intelligent control and optimization of renewable energies. The approved research grant gives us a major boost for the realization of this solution.

white energy congratulates Stephan on his re-election to the OpenEMS board

As white energy GmbH, we would like to congratulate our Managing Director Stephan on his re-election to the OpenEMS Board. This recognition reflects our shared commitment to a sustainable and innovative energy transition. For us, OpenEMS is more than just a platform - it is a decisive step towards a flexible, open and future-proof energy supply: Forward-looking: OpenEMS is forward-looking because...

🌞 Successful implementation of a tenant electricity project in Berlin! 🌇

We are delighted to have successfully completed another tenant electricity project: A photovoltaic system will supply seven commercial units in Berlin with sustainable electricity in future. This project represents a step towards a sustainable energy supply and shows how innovation and sustainability can go hand in hand. 🏗️ Key data on the project: 100 kWp photovoltaic system: Existing PV system that will soon be decommissioned...

Oktoberfest 2024 - A day full of team spirit and tradition

Last Tuesday, we attended the Oktoberfest with our colleagues, partners and customers. With Bavarian delicacies and a convivial get-together, we were able to maintain existing relationships and make new contacts in a relaxed atmosphere. Such shared experiences not only strengthen personal relationships, but also cooperation on a professional level. We are already looking forward to...

OpenEMS Hackathon 2024

On September 12 and 13, 2024 the time has come! As white energy GmbH, we are delighted to be taking part in the OpenEMS Hackathon at slashwhy. For two days, we will immerse ourselves in the world of OpenEMS together with other participants and develop innovative solutions for the energy industry. Everyone is welcome - from beginners to experts. Your...

🌱Acquisition of Congreen Visions GmbH🌱

white energy GmbH, the leading provider of fully integrated energy management systems - with live data, control, billing and CSRD reporting - for buildings, neighborhoods and real estate portfolios, announces the acquisition of Congreen Visions GmbH. Congreen Visions GmbH, headquartered in Friedberg near Augsburg, supports owners and service providers of residential and commercial properties with comprehensive expertise in optimizing the operating phase....

⚡️ EM Power Messe 2024: Our power in Munich! ⚡️

Hello from Munich! 🌍 We have arrived at the EM Power Messe 2024 and our stand and staff at the fair are beaming! 🔆 🔌 Our team is fully charged and ready to show you the latest innovations in the world of building energy. Come by, say hello and recharge your curiosity with us! We have exciting news...

DIN SPEC 91475 published

"DIN SPEC 91475" - The data language for the ecological analysis of real estate has been published 🌿 🚀 Clear and reliable data is needed to overcome the upcoming ecological challenges and ensure the future viability of our industry. This is where DIN SPEC 91475 comes in. "The weEMS energy management system collects and processes building consumption data in accordance with DIN SPEC 91475 to...

Membership of the ZIA

white energy is a new member of the German Property Federation (ZIA)! As part of this prestigious association, we look forward to bringing our commitment to excellence and innovation to the real estate industry and contributing to the digital transformation of the real estate sector. #ZIA #Real estate industry #Innovation

Membership in the gpti

white energy is now officially a member of the Global Property Technology Institute (GPTI)! As part of this prestigious network, white energy is helping to intensify and set new standards of excellence and innovation in the real estate industry together with other leaders. #gpti #proptech #contech #whiteenergy #real estate #construction #technology #innovation Link to gpti's post on LinkedIn

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We are an interdisciplinary team with many years of experience in the field of energy management.

Our hyper-globalized economy is draining our planet's resources. The energy supply of buildings will play a central role in a sustainable economic model. white energy GmbH is actively driving this transformation in the building sector.