Local Energy Storage. Rasmus Refshauge

Transkript

1 Local Energy Storage Rasmus Refshauge

2 EnergiMidt - the future energy market and information society

3 EnergiMidt EnergiMidt was established in 2002 as a merger between 3 electricity companies MEF; ENCON; SE Energi EnergiMidt is a co-operative % owned by the customers We influence our local area by developing a sustainable, responsible and business efficient company

4 EnergiMidt s value proposition Strategy 2015 We participate actively in developing the future energy market and information society. EnergiMidt develops the future sustainable energy supply and information society in close cooperation with our customers and partners. We offer our customers climate friendly and competitive solutions meeting their highest comfort and safety requirements.

5 FLUX A/S

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7 Anlægs værter

8 LES Short description The Local Energy Storage Project will develop a local power storage solution based on a new electronic power conversion and control concept and commercial batteries to enable higher production of grid connected renewable power and giving the user full advantage of own power production and simultaneously stabilize low voltage feeder lines.

9 Local Energy Storage Why Local Energy Storage? To meet the future challenges for energy supply and stability Stabilize feeder lines in Low Voltage areas consumption/production Mitigate infrastructure investments Enable higher yield of Local Renewable Energy production Better business case for customers with RE production

10 View of energy flow overall By curtesy of Energinet.dk

11 Energisystem i dag

12 Energisystem 2035 el og varmesystem 100% Vedvarende

13 Goal for 2050; 0kWh fossil energy production Impact on grid, both TSO and DSO DSO low voltage areas high impact due to increased local production High voltage in grid faster degeneration of electrical equipment

14 How big a problem? The latest study from the Danish Energy Association shows that: If power amounting to 5kW is installed on 40% of houses on feeder lines with more than 5 houses. Approximately 13% of all these feeder lines will experience that the power quality, primarily the voltage will fall outside the requirements of 230 V +/- 10% as set in the [DEFU rapport 579B].

15 Photovoltaic deployment Denmark

16 To overcome the grid problems there are several solutions Curtail the power output from the PV-plant resulting in a loss for the PV-owner Generate reactive power instead of active power if there is a need in the grid new reactive feed in tariff (FIT) has to be developed Consume the exceed energy that causes the voltage problems Upgrading the grid with thicker cables that can carry more load or installing new 10/0,4 kv transformers will lead to very high expenses and also risky investments since the penetration of local energy production is rapidly growing and very hard to predict, you can easily calculate grid reinforcements that will only last a short period before problems in quality will arise again Store the energy when it creates problems and consume when needed

17 Possible locations of application in future

18 Best way to store?

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20 Potential Turnover only for LES 13% of national low voltage feeder lines is ~82,000 lines with app. 9kW stabilization power and app. 100kWh storage = MDKK Turnover

21 Rough Business Case Preliminary calculations on system payback with these boundary conditions: System owner saving 800kWh due to higher own consumption Lead acid battery cost app. 1,500DKK/kWh Power controls cost app. 1DKK/W 3,5 kwh of useable storage; that s approximately 170 cycles on battery and an estimate of equal sunny days [DMI, 1740 sun hours from on average].

22 Following rough estimate of observations Yr. FIT kwh Cost Savings/kWh 800 kwh Savings Simple payback/yrs , , , , , , , , , , ,229 3

23 Status To Date Gantt diagram Project title: Local Energy Storage n.n Deliverable number Project start: Further detailed milestones & deliverables can be found in: Appendix 3 "Description of Work" År Work packages/projektets arbejdspakker: J F M A M J J A S O N D J F M A M J J WP0 Project Management & Administration Task 0.1 Project coordination Task 0.2 Project contact point & facilitating meetings Task 0.3 Project administration Task 0.4 Project reporting WP1 Market screening/mapping Task 1.1 Technology screening Task 1.2 Technology map WP2 System Modeling Task 2.1 Technical inputs and out puts Task 2.2 Economic inputs and out puts Task Modelling WP3 Technical evaluation Task 3.1 Parameter screening Task 3.2 Load/Production profile screening Task 3.3 Conceptual system layout WP4 Development potentials Task Identification of barriers Task 4.2 Concept development Task Prototype development WP5 Prototype/existing systems test sites Task Test at customer sites Task Data log WP6 Dissemination & planning R&D and commercialization Task Securing Patent(s) & planning application(s) Task Business collaboration agreement(s) on supply of DC/DC converters and or storage solutions Task Commercialization planning for Local Storage Systems in 0.4 Radials Task Dissemination of project results & networking Milestones/Milepæle TM0.1 - Project ended & reports delivered TM1.1 - Final market report TM2.1 - Local Energy Storage Model

24 PV Bat Installeret Effekt/kapacitet 7,2 4 kwp/kwh Kr/kWh El besparelse Indtjening år 1 Total Pris for installation DKKR Batt. Sys PV 37gAz0 Bat. 37gAz0 Forbrug af egenproduktion 30% 43% 47% 33% Feed in tarif første 10år 0,6 DKKR/kWh mer besparrelse 14% p.a. Markeds pris efter 10 år 0,40 DKKR/kWh 0% kwh pris 2,4 DKKR/kWh kwh udvikling 4% ROI kwh produktin p.a. Skaleret elforbrug 100% Sys Bat. PV 37gAz0 37gAz0 Solcelle degradering p.a. 0,35% 7,1 10,0 7, Planlagt Service årligt 2,3% Solgt til net Standby forbrug 0,4 kwh 3806 kwh Anbefalet Batteri 3 kwh Forbrug fra Batt DOD 80% 859 kwh Life time indtjent af battteri Kunde el forbrug kwh 3867 kwh target pris Summeret indtjening 10år DKKR Summeret indtjening 25år DKKR Max sol produktion kwh P.a. El Besparelse 47% Maximal indtjening DKKR P.a. Solgt til net 3806 kwh Intern rente 17,13% Forrentning 25år 5,69% estimeret antal Moduler 36 stk (1,28m2/modul) Areal ~ 46 m2 Hovedstol 0 Rente p.a. 0% Teknisk levetid Disclaimer: Data er for standart solår og vil derfor afvige fra faktuelle målinger Økonomiske beregninger skal tages med forbehold og kun bruges som estimerede værdier PVSolve_Batt ROI El besparelse (sekundær) PV produktion (sekundær) El indtjening (sekundær)

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