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Limejump portfolio to play vital role in keeping system balanced this summer

National Grid has published its Summer Outlook Report, providing the market with its forecasts for supply and demand for the coming summer and how it believes the system will cope (you can read the full report here). Demand for this summer is predicted to fall, while inflexible renewable sources will provide more power onto the system than in previous years. System balancing measures will be crucial: alongside curtailing some wind and fossil fuel plants to avoid generation output exceeding demand, maintaining Grid’s voltage frequency will also be a challenge.

Limejump’s Virtual Power Plant portfolio of energy storage projects, embedded generators and industrial/commercial assets will be playing a crucial role this summer to keep the Grid balanced. As a provider of dynamic frequency response, Limejump will be providing real time response to any fluctuation in Grid frequency, automatically commanding assets to turn up or down through our cloud-based optimisation technology, using the latest big data tools and machine learning algorithms. We are the only aggregator to hold both high and low service dynamic frequency response contracts, meaning our assets earn money from both turning up and down at short notice.

The Summer Outlook Report demonstrates that the low carbon transformation the UK energy system is now fully underway and finding flexibility is crucial to maintaining a balanced system during the summer months. Batteries, businesses and smaller generators are now able to support National Grid thanks to their ability to flexibly adjust output – which is why the Virtual Power Plant is so important because it automatically enables this.

Providing Grid with flexibility through a portfolio of batteries, generators and business assets is a cost-effective and low carbon way to balance the system and Limejump is ready to respond to any fluctuations between supply and demand this summer.

Limejump uses real time algorithms that monitor the system and provide sub-second response to fluctuations in Grid frequency. By combining fast responding assets such as batteries with large industrial assets and embedded generator flexibility, Limejump can respond swiftly and maintain a reduction or increase in output for the duration required by National Grid to help maintain frequency. Whilst Limejump is currently providing such a service alongside large scale fossil fuel power plants, we’ll continue to grow our portfolio to flexibility is being provided through low carbon sources rather than legacy polluting assets.

You can find out more about how Limejump’s approach is enabling more generators and assets to earn more revenue by participating in dynamic frequency response here.

Demand Side Response: maximising your earning potential

Static Frequency Response contracts have dropped by up to 70% in recent months – but this doesn’t mean your revenues need to suffer.

Changing mix means changing requirements

A changing generation mix and the corresponding intermittency of supply in the UK is evolving the way Grid works with businesses and generators to maintain a balanced and stable power supply.

To date, Frequency Response schemes have involved businesses and generators powering down (or up) when required, releasing the pressure on the Grid and providing valuable capacity support. This has come with a significant financial reward for its participants, with businesses increasingly benefiting from their participation in demand side response schemes, as both the ability to participate and the understanding of how to do so has grown.

However, as the changes in UK generation have altered the demands from the Grid, the schemes have changed too, and the decisions you make on how to take part can have a significant impact on what you could earn.


Speed is the name of the game

The majority of businesses and generators involved in frequency response schemes have been providing Static Frequency Response – turning consumption up or down within 30 seconds and holding at that level for 30 minutes with annual contracts of around £10/MWh available until recently.  However, as the requirements of Grid evolve, speed and time of response is the critical (and most lucrative) factor of balancing the system.

Assets that can respond instantaneously to fluctuations through the Dynamic Frequency Response (DFR) scheme are in demand, and as a result, Static contract values have dropped off significantly, falling to as low as £3MW/h. As this price falls, the incentives paid for faster responding assets is growing, making DFR by far the most lucrative type of contract.

Such instant response capability is mainly held within batteries and utilities, meaning many embedded generators and businesses miss out on the highest earning contracts – despite having fast-responding assets that can still respond within a matter of seconds.


The Limejump model: inside a Virtual Power Plant

There is an opportunity to be involved in the highest earning opportunities of DSR, even for individual assets without the ability to provide sub-second response.

At Limejump we provide the technology and platforms that enable you to automatically act on market opportunities to help balance the energy system and get paid to operate flexibly, regardless of your size or asset type.

By combining the flexible capacity of slightly slower assets to those that can respond instantly in our virtual portfolio, speed of response can be combined with the ability to hold a reduction or increase in consumption for differing periods of time, providing a vital service to National Grid and meeting Dynamic Frequency Response requirements.

This “Virtual Power Plant” approach automates response to Frequency Response events and removes the traditional constraints around taking part in DFR, enabling all to participate in the most valuable schemes and maximise earnings.


Whilst the market may seem complex, Limejump’s Virtual Power Plant approach removes barriers to demand response and makes it easy to participate in Grid’s DSR schemes, giving you open access to the most lucrative opportunities regardless of your asset mix.

To find out more about how to get involved, give one of the team a call on 020 8396 6848 or send us a message here.

Transitional Auction: a strong price secured for businesses

The second Transitional Capacity Market Auction has delivered a price of £45k/MW for businesses participating this coming winter – significantly higher than £7k/MW secured in the recent EA auction which was also for this Delivery Year beginning October 2017.

The auction was limited to turndown Demand Side Response (DSR) to encourage its participation in the Capacity Market. Over 300MW of volume was secured through the auction, confirming the importance that business flexibility will play in the Capacity Market and hopefully encouraging businesses to consider future participation to secure an attractive revenue stream.

Asking businesses to reduce consumption during peak demand is a far more cost-effective and cleaner solution than paying older fossil fuel plant to switch on or generate more – so the message that this auction result sends to the market about the value placed on the role of businesses in keeping the system balanced can only be a good thing.


Limejump had eight Capacity Market Units in the auction and secured volume for each to meet its customers’ needs. Alongside participation in Dynamic Frequency Response schemes and accessing wider market opportunities through our Virtual Power Plant, we’re helping businesses to unlock their flexibility and maximise their revenues. To find out more, click here or contact our business development team either via the Contact page or by giving us a call on 020 8396 6848.


Coal vs Wind

Coal vs Wind

For centuries humans have harnessed the power of wind to assist them in their daily lives. Wind was used to grind grain into flour and pump water for irrigation. In the Netherlands wind-powered pumps drained the water from the polders; in America and Australia, wind pumps provided water for livestock and steam engines. The first windmill to generate electricity was made by Charles Brush in 1888. Today there are 314,000 wind turbines providing a generation capacity of over 433GW worldwide.

(First Wind Turbine – Charles Brush 1888)

The 1880s, when Thomas Edison built the first power station in the world, saw the rise of the coal industry. To this date, coal is classed as one of the most reliable means of power generation, producing a baseload all year round without being affected by external forces, such as temperature or weather. Although coal earned respect because of this, the emissions burning it produced a problem and coal has been gradually replaced by environmentally friendly power machines – such as wind-turbines.

(First Coal Power Station – Thomas Edison 1882)

Although a decade ago no one would have thought that renewables would play such an important role in our current power market, today we can proudly say that 2016 was the year wind generated more electricity than coal power stations in the UK.

Three major power stations closed in the UK in 2015, reducing the coal fuelled electricity generation from 22.6% in 2015 to 9.2% 2016. Wind blew everyone away in 2016 with 11.5% of a total provided power generation. Coal fuelled electricity output was at its lowest in the last 80 years, environmentalists and green groups were fast to label it as a ‘milestone’ of the century, describing it as ‘fantastic news’.

(Graph showing Coal vs Wind electricity generation. )

Current environmental policies make coal powered stations extremely uneconomic, painting a bleak future for the once ‘cheapest’ labelled power fuel. Ministers aimed to shut down all coal power stations to meet carbon targets by 2025, however at the current rate the last plant should be shutting within the next 5 years.

Indeed it is a great achievement, however we must not forget that renewables are very intermittent and unless we make our cities smarter and adopt smart balancing we will always be dependent on the coal producing giants waiting on standby to fill in the gaps.

Nevertheless 2016 is a year to remember. First, solar power energy production overtaking coal for 6 months straight over the spring and summer period, then wind leading the game in winter! Further government support and investment into renewables, the growth of smart energy companies and development of smart homes will soon make sustainable power generation that was once classed as ‘unreliable’ and ‘too expensive’ our main source of energy, ensuring sustainable living for our future generations.

Energy Storage – the New American Dream for the Brits. What’s in it for me?

Introduction: Energy Principles

There are two existing principles when balancing the Grid:

Production follows consumption – a principle based on the assumption that energy demand will not exceed the supply and that the production side is always controllable. Therefore, consumers are barely regulated, whilst suppliers are heavily coordinated and structured to satisfy the fluctuation in demand.

Consumption follows production – This principle assumes that electricity can only be consumed if it is available and the supply side is unregulated, meaning that quotas would need to be placed on the consumers’ side.

Germany is a great example of the first principle. One quiet lunchtime in 2010 Germany experienced 7 GW of surplus in their system and to avoid blackout, 2.8 GW was exported abroad while 4.3 GW was absorbed nationally. This event highlighted the increasing urgency for smart balancing in Germany.

UK Energy Market Transformation

Before we get onto the subject of smart balancing, lets first understand how the UK system has come to this in the first place. For the last 10 years, we’ve seen heavy investment go into renewables, not only investment into building them, but also great government support through subsidies to encourage more and more environmentally friendly means of energy production. Currently, the UK can proudly say that around 15% of energy comes from natural sources. However, at what cost? The intermittent nature of renewables puts the Grid under a lot of pressure, meaning that a lot of the country’s functionality depends on weather. What do we do? Kindly ask ‘Father Thunder’ to continue blowing the wind to keep the turbines spinning?

Although a lot of attention is being paid to the intermittency of renewable technology, consumption is becoming just as volatile. Growing popularity of battery technology and electric vehicles is one of the main examples of growing unpredictability in customer demand and is only set to increase over the next few years. Thus in order to keep the lights on in the UK there is a growing need to concentrate on both supply and demand side to achieve perfect balancing – ‘complimentary flow’.

UK Energy Market Volatility

In the meantime, as well as Grid balancing issues, we have seen in the past two months the UK’s energy market volatility, reaching levels that have not been seen before. Power price spikes (through System prices) touched £1500 per MWh on 08/11/16, even though the average baseload in the months September – November 2016 was £53 per MWh. Even spot prices in the UK have hit £999 per MWh when average baseload spot price this Autumn have been £55 per MWh.  In fact, the price spikes are the highest ever recorded in the UK market.  These events clearly indicate the pressure the Grid is put under and the need for reliable technology to keep UK homes and businesses powered.

Here at Limejump we are helping to provide stability to the system using intelligent technology. An internally developed smart box and software platform created the concept of Virtual Power Plant (VPP). This is where all different types of assets and generators are pooled together to create single- balancing tool. But the brilliance is not just in the ability to turn things off and on, but to do it in the way that helps balance Grids operations without impacting Customer operations. To put it in perspective, let’s take an example of the first abnormal price spike that occurred in the UK this September.

September’s Invisible Blackout Explained

Most of the power suppliers in the UK faced an ‘invisible blackout’ on the 13th of September 2016. We’ve called it an ‘invisible blackout’ because although the lights in the country stayed on, very little was said to explain the record spikes in the spot prices or little warning was given to those closely involved in the energy industry.

Little was said because the aggregators and suppliers in the UK are not familiar with such market movements, while most struggled to get their heads around it, Limejump put batteries into operation in the arbitrage market to take advantage of the price spikes and therefore also helping to keep the system balanced.

The evening spikes meant that Limejump had a sudden opportunity because of the intraday price profile. Using Limejump’s smart technology allowed us to forecast the price spike in advance giving us time to charge our portfolio of batteries in advance at low price and discharge at the top of the peak. The price spike was the highest spike recorded in the last 20 years.

The Graph bellow shows the events of the day and what actions were taken to balance the grid and at the same time take advantage of the spike. At the point of charge, there was a £999 price arbitrage in the market and Limejump traded out to achieve very close to these levels.


The Future of the Energy Market

After analysing historic data it is clear that the energy market has moved onto a different level of complexity with increased price volatility. Average spot market price in Autumn 2015 was around £40 per MWh when this year it’s above £53 per MWh. The interesting factor is that day to day prices stayed on the same level, however, the average increased mainly due to the occurrence of abnormal price spikes.  Calculations show that in the last 2 months 1 MW of battery could have earnt around £5000 extra profit just from entering the arbitrage market. Approaching the winter period is expected to increase market volatility, opening new doors to opportunities that were not considered before.

This is a historic time in the Energy industry where no one truly knows how to handle it or how to move forward, but companies that can minimise the risk it creates, capitalise on any opportunities it makes and are the best placed in the industry to manage it, will be the ones dominating the future energy industry.

Although the current events are unfamiliar to the nation, Limejump has been inspired by in-depth market analysis and created to directly address and support the energy system. We expect the market to start moving towards a more volatile system in the future and for prices to become much more unpredictable meaning that only continuous innovation and smart technology will be able to balance the Grid and keep UK’s lights on.

See us at Europython!


Limejump is off to Europython 2016!
We are proudly sponsoring one of the biggest Python events in the world, and will be front and centre with our stand. Please come by and say hi to us, we really want to meet some great python people. We’re all about the python in our tech so you’ll be in good company.

Come by for a chat about this and that, we cant wait to meet you all at this fantastic event!