Everything you need to know about flexibility in energy markets in one place? Written by experts for experts and beginners alike? This is what we strive for with our Flexicon.

Knowledge is key

We are traders and engineers working to establish a 100% sustainable energy supply. Flexibility is key in this endeavour because flexibility is what we need to fill the gap in renewables generation. With our School of Flex, we want to share our knowledge on flexibility and invite you to collaborate. 

Flex Index

"How much money can I make with a battery?", we get asked a lot. To answer this question, we created the FlexIndex, which is a transparent reference for the value of flexibility on the German power market. Check it out...

Book a Speaker

You are on the hunt for a speaker on topics such as power trading, battery energy storage, or the need to balance renewables? Ask for a speaker and we will send one of our experts to your lecture or conference.

Do you have it in you to be an energy trader?

Find out by taking the ultimate power trader's quiz and answer questions on energy markets and trading strategies!

Videos & Podcasts

Nothing beats first-hand knowledge from experts. Our energy traders and engineers give insights into their job, the market environment they operate in, and what we are working on.

Discover our Services

FLEXPOWER helps you to bring your portfolio to the energy market. We combine over 25 years of experience in renewables trading in our seasoned team of short-term energy traders. We manage large-scale renewable portfolios and flexible assets with our lean and fully digitized approach.

From Action to Zuccess


Battery Energy Storage System (BESS)

A Battery Energy Storage System (BESS) is a system that uses batteries to store electrical energy, which can then be released back into the electrical grid as needed. BESS can be used for a variety of purposes...


Functions & Components of a Battery Energy Storage System

A Battery Energy Storage System (BESS) features more than just the battery that stores electricity - there are multiple other functions and components in a BESS. These include power electronic functions, the functions of the control and management systems as well as metering and communication functions...


Market Participation of a Battery Energy Storage System (BESS)

There are several forms of market participation for a Battery Energy Storage System (BESS) in energy markets. Check out our list of energy markets that are a good fit for flexibility from battery storage.

Market Value of Renewables

The market value is a metric that measures how valuable electricity coming from a particular plant is. It helps us understand how higher shares of renewables collectively lead to lower returns and its implications for the ongoing energy transformation.


REMIT (Regulation on Wholesale Energy Market Integrity and Transparency)

The REMIT regulation, formally known as the "Regulation on Wholesale Energy Market Integrity and Transparency," is a pivotal legislative framework within the European Union (EU) that plays a crucial role in ensuring the fairness, transparency, and integrity of the wholesale energy market.


Technical Specifications of a Battery Energy Storage System (BESS)

The following technical measures are important for evaluating the performance and suitability of a battery energy storage system (BESS) for a particular application, and they are often used to compare different battery storage technologies.


Confessions of a Trader

Radical honesty is a rare animal in the wilderness of energy trading so we are proud to share some stories which are maybe harsh, quick and dirty but speaking the truth, the truth and nothing but the truth.


June 3, 2024

This blog post is the third in a series of articles about hedging price volatility using standard shapes such as wind and PV, as well as more novel and somewhat non-standard ones, such as the FlexHL (Battery). While the first two articles were explainers for consumers, this one is for suppliers who are looking to sell their flexibility, i.e. BESS owners.

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How to Purchase Power in the 20s and 30s, Part III: Flex HL (Battery) Shapes & How to Sell Flexibility & Hedge Price Volatility