Home storage needs more control

Michael Koller will be speaking at the 4th Residential Energy Storage Forum in Berlin from May 8 to 12. Pic: Energy Storage World Forum.

Michael Koller will be speaking at the 4th Residential Energy Storage Forum in Berlin from May 8 to 12. Pic: Energy Storage World Forum.

By Mike Stone

The aggregation of domestic battery units to provide large-scale energy storage is making headlines in the industry.

But pooling the storage potential of humble electric heaters, heat pumps and other pre-existing thermal units could also have a big role to play.

What’s vital for such a combined system are adequate control systems that optimise all aspects of energy management in the home, according to Michael Koller, energy storage specialist at Swiss utility and grid operator EKZ.

His presentation at the 4th Residential Energy Storage Forum on May 9 in Berlin, titled How to Use the Flexibility of Residential Systems Inside a Virtual Power Plant, will tackle the technical challenges in obtaining such control faces.

It’s a timely subject, as amalgamating domestic energy storage into virtual power plants (VPPs) is rapidly gaining interest as a way of providing ancillary services to the grid. 
Read more →

How V2G could stabilise the grid

Ernesto Ciorra is one of the speakers at the Energy Storage World Forum in Berlin from May 8 to 12.

Ernesto Ciorra is one of the speakers at the Energy Storage World Forum in Berlin from May 8 to 12.

By Jason Deign

Vehicle-to-grid (V2G) storage may be all that grids need for stability as renewables increase, according to a speaker at the upcoming Energy Storage World Forum, on May 8 to 12.

“With V2G technology we can provide grid stabilisation services without any need for additional storage reserves, but by simply aggregating electric vehicle batteries,” said Ernesto Ciorra, Enel’s head of innovation and sustainability.

“With the current technology that we are already improving, for a country like Denmark to provide stabilisation services we need about 40 electric vehicles, while in Germany and UK the minimum number is about 100.”

Ciorra told Energy Storage Report that if all the 18,000 Nissan electric vehicles in the UK were connected to the electricity network, they would generate an output equivalent to that of a 180MW power plant.

“If that were to be scaled up in a future where all vehicles on UK roads were electric, V2G technology could generate a virtual power plant of up to 370GW,” he said. 
Read more →

Why storage business cases depend on weather

Dr Björn Peters will be speaking at the Energy Storage World Forum in Berlin this year. Pic: Energy Storage World Forum.

Dr Björn Peters will be speaking at the Energy Storage World Forum in Berlin this year. Pic: Energy Storage World Forum.

By Jason Deign

The case for implementing storage in electricity networks should be based on long-term weather analyses, attendees at the Energy Storage World Forum will hear.

Including weather patterns as one of the main variables in a business case analysis will help show niches where storage “makes a lot of sense,” said Dr Björn Peters, who will be speaking on the topic at the Forum in Berlin this May.

For off-grid mining operations in hot climates, for example, “there might be a very good business case for solar storage” compared to diesel.

Within grids, meanwhile, storage can offer value in helping to balance out short-term fluctuations in intermittent renewable energy.

However, Peters’ research is worrying for policy makers who hope to rely completely on intermittent renewable energy generation to reach European carbon reduction targets. 
Read more →

The utility response to grid defection

Utility responses to grid defection will be one of the many topics being discussed at the Energy Storage World Forum in Berlin this May. Pic: Energy Storage World Forum.

Utility responses to grid defection will be one of the many topics being discussed at the Energy Storage World Forum in Berlin this May. Pic: Energy Storage World Forum.

By Mike Stone

Utilities are seeking new ways to respond to grid defection as the economics of solar-plus-storage make it easier for homeowners to disconnect.

A report called The Economics of Grid Defection, by the Rocky Mountain Institute (RMI), concludes that in territories such as Hawaii off-grid solar plus storage is already economically competitive with remaining on the electricity network.

Tens of millions of customers will defect in other areas such as California and New York as solar plus storage achieves grid parity by 2030, and possibly even 2020, the RMI predicts.

And grid defection is by no means a US-only phenomenon.

In many parts of Australia and Germany, for example, the business case for residential PV and storage is still far from convincing, but that has not stopped homeowners from installing systems for a whole host of other reasons. 
Read more →

Why you should aim for an open business model

Delegates at next year's Energy Storage Europe Conference will hear a plea for open business models (Pic: Energy Storage Europe 2016).

Delegates at next year’s Energy Storage Europe Conference will hear a plea for open business models (Pic: Energy Storage Europe 2016).

Energy storage developers and asset owners should aim to be technologically neutral to make the most of global markets, experts will hear next year.

Florian Mayr, partner and storage expert of management consultancy Apricum, is due to make the case for technologically open business models at the Energy Storage Europe Conference 2017 in Düsseldorf, Germany.

These models can benefit most from the growth of international storage markets as flexibility becomes a key factor for success in the industry, he claims.

“Today storage markets are still comparatively small and characterised by individual, often geographically determined application cases,” he said. 
Read more →

Islands show how energy transition works

Island renewable energy projects with battery storage, like the Younicos Graciosa Island in the Azores project, could be the model for energy storage in Europe, says Clemens Triebel. Photo: Energy Storage Europe

Island renewable energy projects with battery storage, like the Younicos Graciosa Island in the Azores project, could be the model for energy storage in Europe, says Clemens Triebel. Photo credit: Energy Storage Europe

By Jason Deign

Islands converting power supplies from diesel to renewables could be role models for the global transition to renewable energy, according to Younicos co-founder Clemens Triebel.

“If we’re aiming for a high percentage of solar and wind energy, the expansion of renewables has to be matched with sufficient storage capacity from the start,” said Triebel in an Energy Storage Europe press release.

In contrast, said Triebel, the German electricity system is still discriminating against energy storage in favour of conventional power plants.

“We still produce power according to a 19th century paradigm which holds that energy is best produced by large generators that rotate constantly,” he commented.

“If we continue to cling to this notion, the grid will continue to be taken up by coal, gas and nuclear, blocking space for solar and wind energy more and more frequently.”
Read more →

Storage seen as key in COP21 talks

COP21 2015: We analyse what participants at the Paris Climate Conference are saying about climate change and energy storage, and how it will affect global industry investment. Photo credit: COP21

COP21 2015: We analyse what participants at the Paris Climate Conference are saying about climate change and energy storage, and how it will affect global industry investment. Photo credit: COP21

By Jason Deign

Energy storage looks set to benefit from increased funding worldwide if leaders make good on pledges at the 21st Conference of Parties (COP21) this week.

Up to USD$30 trillion in investment could be freed up to fight climate change in what has been hailed as the “end of the fossil era.”

The money would be needed to improve renewable energy penetration to reach the Intended Nationally Determined Contributions (INDCs) being presented at COP21.

An initial $20bn or so in funding for renewable energy innovation, including storage, was announced on Monday when the Breakthrough Energy Coalition, a group of 30 or so major investors, joined the fight against climate change.

Elsewhere, energy storage was specifically cited as an investment target for “tens of billions of dollars” by White House sources at the COP21 talks in Paris.
Read more →

TenneT: “Storage is needed”

What is the future for grid-scale energy storage in Europe? We ask the Netherlands TSO TenneT, a key speaker at Commercialising Grid-Scale Energy Storage Global Congress 2015. Photo credit: TenneT

What is the future for grid-scale energy storage in Europe? We ask the Netherlands TSO TenneT, a speaker at Commercialising Grid-Scale Energy Storage Global Congress. Photo: TenneT

Previously published by Commercialising Grid-Scale Energy Storage Global Congress 2015. Republished with permission.

If you’re wondering what the future holds for grid-scale energy storage in Europe then it helps to speak to the people who run Europe’s grids.

That includes organisations such as TenneT, the independent owner and operator of 100% of the high-voltage electricity grid in the Netherlands and around 30% of the high-voltage grid in Germany.

As a Transmission System Operator (TSO), TenneT’s principal tasks are to provide power transmission and system services and facilitate the functioning and development of the electricity market.

At the end of 2014, TenneT, which is currently 100% owned by the state of the Netherlands, owned around €13.7bn of assets, of which 15% are located in the Netherlands and 85% in Germany.

Here Bianca van Ommen, of TenneT’s mergers and acquisitions business development unit, talks about the role that energy storage could play in the TSO’s future operations.
Read more →