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Opinion Exchange

We do not only trade power, we also exchange ideas

The rapid rise of renewable power generation has already fundamentally changed and continues to disrupt the traditional energy landscape. In markets such as Germany the disruption has reached levels that the traditional approaches where different types of conventional plants were dispatched to meet variable demand can no longer apply. In our Blog OPX, we want to exchange opinions on the energy system of the future and share our experience from and our view on a market that already has transformed to a great extend in the past years.

Pooled EV batteries to deliver control reserve to the electricity grid
Energy Blog / aFRR / Control Reserve / Electric Vehicles / Grid Balancing / Grid Stability

The (electric) engine is running – How to use EVs for grid balancing

After two years of development, in August 2020, Next Kraftwerke and Jedlix started offering secondary reserve power (aFRR) to the Dutch grid using a pool of electric vehicles (EVs). Nick Hubbers, Jedlix, and Elias De Keyser, Next Kraftwerke, talk about their ambitions, how they realized this project, and what they learned along the way on using electric vehicles to balance the grid. Fasten your seat belts and keep reading!

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Blackout in the californian grid
Energy Blog / Energy Transition / Grid Stability / Photovoltaics / Power Grid / Utility

“California’s grid operator falls short during recent heat wave”

On Friday 14 Aug, an extremely hot and dry day in California and the west, California’s independent system operator (CAISO) had to resort to limited rolling blackouts that affected approximately 400,000 customers in California on Friday and the following Saturday 15 Aug.

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Belchatow Power station in Poland
Energy Blog / Virtual Power Plant / Electricity Market / Control Reserve / Energy policy / Energy sector

The (Almost) Black Monday in Poland

On June 22 of 2020, Poland came very close to a countrywide power outage: Power plants with a capacity of thirteen gigawatts (out of which, only six planned) went down – and subsequently, balancing energy prices rose to record level.

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Nods symbolize the grid of the algorithm of the Virtual Power Plant.
Energy Blog / Algorithm / Grid Stability / Power Grid / Virtual Power Plant / VPP

How Are Units in a VPP Selected to Provide Ancillary Services?

In a Virtual Power Plant, thousands of systems provide balancing services every day. But how exactly are the individual units selected for the provision of balancing energy? Which factors are taken into consideration?

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Value of virtual power plants to society expained.
Energy Blog / Aggregator / Energy Market / Market integration / Virtual Power Plant / Grid Stability

The Top 10 Questions When Planning a Virtual Power Plant

Anyone who wants to aggregate decentralized plants in a Virtual Power Plant is confronted with a whole range of questions during the planning phase: Which business cases are feasible in the regulatory context of my country – and which ones make economic sense in this market environment? How can I connect the technical units in my Virtual Power Plant and which solutions meet the technical requirements of the grid operator? We compiled the top 10 questions each aggregator-to-be need to find an answer for.

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Occurence of negative electricity prices in the power system explained.
Energy Blog / Energy Exchange / Energy Trading / European grid / Renewable Energy / Power trading

Negative electricity prices: Fever symptoms or business as usual?

Since the beginning of the corona crisis, negative power prices have become quite common for electricity traders: In this blog, we explain how negative electricity prices develop and what is positive about them.

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ulk risk loss coming from conventional power plants in the energy sector explained,
Energy Blog / Renewable Energy / SAIDI / Wind Energy / PV / European grid

Bulk Loss Risk: How Conventional Power Plants Endanger Security of Supply

The opinion persists that too many renewable energies in the energy mix would endanger the security of supply. Although there are currently still challenges that renewables cannot (yet) solve entirely on their own – keyword dark doldrums – the trend of the last few years shows that the security of supply in Germany has not declined, despite an increasing share of distributed renewable and volatile electricity producers. On the contrary, it has even increased. The Federal Network Agency publishes the SAIDI, which is the System Average Interruption Duration Index that documents the energy supply disruptions of a year and in which the cause of these disruptions is also identified – showing the increase in security of supply despite a simultaneous increase in renewable energies.

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The corona crisis and its influence on the electricity markets.
Energy Blog / Control Reserve / Energy Market / Frequency Control / Power market / Power Grid

The Corona crisis and the electricity market

The COVID-19 pandemic shakes up the world – but the power grid in Europe remains stable. What ensures this stability and how do the electricity markets in Germany and Europe react to the situation?

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Windpower feed-in was high in the winter of 2020.
Energy Blog / Energy Market / Energy Transition / European grid / Renewable Energy / Wind Energy

Winter belongs to Wind Power

For weeks now, Germany and its European neighbors have had a peak season for wind power. The winter storms Sabine (also known as Ciara or Elsa), Victoria (known as Dennis in UK) and Yulia brought new records – most recently the unprecedented peak value of 46.2 gigawatts (GW). Renewables accounted for 69 percent of net electricity production in the third week of February, with wind accounting for 55 percent. Never before has so much wind power been fed into the German power grid. Are these figures the result of extreme weather conditions, which simply brought us an extraordinary number of storms this winter, or is there a general trend here? And how does the German energy system actually cope with these record values?

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Business Model of a Power Aggregator
Energy Blog / Business Model / Flexibility / VPP / Renewable Energy / Forecasting

What’s the business model of a Virtual Power Plant (VPP)?

For a couple of years now, the role of the Virtual Power Plant has been established in the energy industry. Today, it is pretty clear what a Virtual Power Plant is and why it makes sense to network, forecast, optimize, and dispatch a fleet of coordinated distributed energy resources (DER) such as wind, solar, bioenergy, hydropower, batteries, electrolyzers, and many more. But how do you make money with a Virtual Power Plant? What’s the business case of a VPP operator, or to use a synonym, of an aggregator?

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Side effects of energy system changes
Energy Blog / Energy policy / Energy Transition / Flexibility / Transformation / Volatility

For information on risks and side effects, ask your network operator or the Minister of Economic Affairs…

Everyone is talking about the transformation of the energy system. But what exactly does this transformation involve?

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