Energy Storage, An Innovative Energy Solution - James Graham - SRAC15
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Energy Storage, An Innovative Energy Solution, presented by James Graham at the Scottish Renewables Annual Conference March 2015.
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Energy Storage, An Innovative Energy Solution - James Graham - SRAC15
- 1. Energy storage - an innovative energy solution Case study: UKPN’s Smarter Network Storage (SNS) project James Graham, Head of Direct Sales 25th March 2015
- 2. The impact of intermittent energy sources 2 Maintaining electricity supply Managing intermittency cost effectively Carbon emissions from other sources Intermittent energy sources
- 3. Innovation to manage intermittency Intermittent renewables impact how the electricity system maintains sufficient reliability and flexibility to manage supply. Energy storage allows power generated when intermittent supply is high to be stored for release when supply is low. 3 Renewable generation Energy storage Reliable capacity
- 4. Battery storage - an energy solution Energy storage can play a major role in balancing the grid. UKPN are pioneering battery storage and driving forward technology development. They launched the Smarter Network Storage (SNS) facility on the 15th December 2014 SmartestEnergy are a commercial partner in the project. 4 UKPN launched Europe's largest battery storage project "The project will allow us to explore and improve the economics of energy storage, and assess the potential benefits to the electricity system in a number of sustainable and flexible ways" Ben Wilson, CFO, UKPN
- 5. The Smarter Network Storage (SNS) project 5 The SNS facility, in Leighton Buzzard, stores wind and solar energy to use on the distribution network. Energy capacity: 10 MWh Real power: 6 MW The ‘giant battery’ is housed in a building the size of 3 tennis courts Stores enough real power (6MW) to power around 6,000 homes for 1.5 hours at peak times
- 6. Before & After Woodman Close – October 2013 Woodman Close – December 2014 Source: UK Power Networks
- 7. Functions of SNS Frequency Regulation SNS can regulate the grid frequency through power exchanges. This assists National Grid in stabilising the frequency of the wider electricity system. Reserve Reactive Power Support SNS has 7.5MVAr of reactive power capability. Reactive power can help improve power factor, reduce losses and support voltage levels on the local network. SNS provides reserve capacity and can be triggered remotely to export power. This assists National Grid in balancing electricity demand and supply. SNS can provide energy based on a given energy delivery profile. This can be used to manage imbalance risk and assist in hedging against peak electricity prices. Tolling Peak Shaving SNS uses its stored energy to meet peak demand which reduces the load on the network. This defers the need for network reinforcement to meet peak demand. Source: UK Power Networks
- 8. The SNS business case 8 Source: UK Power Networks 5.1 3.3 2.5 2.6 2.9 11.4 0.0 4.0 8.0 12.0 16.0 Conventional Reinforcement Lifetime Installed Cost Tech Cost Reduction / Ahead of Need Future Income Streams System Cost Savings Future Net Method Cost £m Conventional Once Proven Successful
- 9. How does it work? 9 Source: UK Power Networks
- 10. What’s next for energy storage… Government support is crucial “Government must set a target to achieve 2GW electricity storage by 2020 and support that with a market mechanism to drive innovation through to delivery” Support of commercial partners like us to provide a route to market. New revenue streams for generators Take advantage of peak prices Optimise value of the asset Participate in triad and demand-side schemes 10
- 11. Thank you Please come to our stand if you have any questions or would like to learn more about SmartestEnergy – stand 34 Read more about the UKPN SNS project on the SmartestEnergy blog - www.blog.smartestenergy.com Learn more about the GB independent generation market in our Energy Entrepreneurs Report – www.energyentrepreneursreport.com 11
Editor's Notes
- Intermittent energy sources are typically known as wind, solar, wave and tidal. Wind, solar, wave and tidal were used to generate 8.6% of UK electricity in 2013 (Ref. DECC Energy Trends, December 2014) How do these renewable sources have challenging impacts on the energy system? Maintaining electricity supply (i.e. the provision of electricity to meet demand) Managing intermittency cost effectively (i.e. managing the impact on electricity prices) Carbon emissions from other sources (i.e. carbon dioxide emissions) The proportion of electricity generated from these renewable sources is likely to increase to meet EU renewable targets by 2020. A further increase is likely for the long-term to help the UK meet EU targets for greenhouse gas emissions and renewable energy targets for 2030.
- - Intermittent sources have large variations in the amount of electricity they can provide at a national level. The UK energy systems requires RELIABILITY and FLEXIBILITY to manage supply. Intermittent renewables impact how the electricity system maintains sufficient reliability and flexibility. Flexibility is necessary to allow elec. suppliers, generators and National Grid to keep the electricity system working. I.e matching supply and demand and managing the imbalance between the two. Energy storage provides a way to manage this intermittency by helping to balance the grid by storing surplus power and releasing it when needed. The combination of renewable generation + energy storage = reliable capacity Demonstrating how our energy system needs to rely on both traditional energy sources and innovative solutions
- £13.2m LCN funding awarded in Nov 2012 £4.0m investment by UK Power Networks
- - The Smarter Network Storage (SNS) facility, developed by UKPN stores wind and solar energy to use on the distribution network. - Giant battery housed in a building the size of 3 x tennis courts - The 6MW battery is big enough to power around 6,000 homes for 1.5 hours at peak times.
- Reserve = STOR Tolling = send set points to manage their imbalance – we get a fixed fee Each of these areas is going to be explored in turn as part of the initial trial period. Following this first phase during 2015, the second stage of the trial phase into 2016 will then operate all of these services, optimising all of the above to maximise value. In the UK market, frequency regulation is one of the more valuable services that the storage can provide, due to the limited ability of many generators to respond rapidly enough – although in the UK, faster response is not yet compensated for over and above 2-second response (In some states in the USA, faster response, like that from storage, can command a higher value). A key area the project will investigate is the viability of business models when 3rd parties are providing services to the DNO, rather than owning/operating the devices ourselves. The risk in these models is that the price the DNO is willing to offer for peak shaving (for critical local network support) might not be sufficient to incentivise a purely commercial operator to offer these services, if they can achieve higher value elsewhere. With the transmission system-wide balancing services, geography is less important and there are alternative providers National Grid can bring on if reserve providers do not deliver for example. For local distribution network applications, there may be limited other resources on the specific local network that can be called upon – hence the reliability and availability of the storage (or DSR) becomes more critical.
- How it works. Where SmartestEnergy fit it. Summary: - The innovative Leighton Buzzard installation is exploring how to maximise the value of storage by performing multiple applications for the first time - It will provide essential support to the local network to reduce demand on overhead lines; in conjunction with balancing services
- Examples of countries supporting it – proof points: California’s storage target of 1,300MW by 2020 Germany’s €25m support for residential storage
- 2014 EE Report available now - on the stand. 2015 EE Report available in the summer.