Local Energy Storage
Rasmus Refshauge
EnergiMidt -
the future energy market
and information society
EnergiMidt was established in 2002 as a merger between 3 electricity companies –
MEF; ENCON; SE Energi
• We influence our local area by developing a sustainable, responsible and business efficient company
EnergiMidt is a co-operative - 100 % owned by the customers
EnergiMidt
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.
EnergiMidt’s value proposition
• FLUX A/S
Anlægs værter
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.
LES Short description
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
View of energy flow overall
By curtesy of Energinet.dk
Energisystem i dag
Energisystem 2035 el og varmesystem 100% Vedvarende
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
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].
Photovoltaic deployment Denmark
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
Possible locations of application in future
Best way to store?
Potential Turnover only for LES
13% of 634.700 national low voltage feeder lines is ~82,000 lines with app. 9kW stabilization power and app. 100kWh storage
capacity @2,000DKK/kWh) = 16.400MDKK Turnover
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 2001-2010 on average].
Following rough estimate of observations
Yr. FIT kWh Cost Savings/kWh
800 kWh Savings
Simple payback/yrs.
2013 1.3 2.12 0.82 652 11
2014 1.16 2.20 1.04 832 8
2015 1.02 2.29 1.27 1,014 7
2016 0.88 2.38 1.50 1,200 6
2017 0.74 2.47 1.73 1,388 5
2018 0.6 2.57 1.97 1,579 4
2019 0.6 2.68 2.08 1,661 4
2020 0.6 2.78 2.18 1,747 4
2021 0.6 2.90 2.30 1,836 4
2022 0.6 3.01 2.41 1,929 4
2023 0.6 3.13 2.53 2,025 3
2024 0.6 3.26 2.66 2,125 3
2025 0.6 3.39 2.79 2,229 3
Status To Date
Gantt diagram
Project title: Local Energy Storage Deliverable number
Energiteknologisk Udviklings-Project start: 2015-01-01
og Demonstrations ProgramFurther 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 A S O N D J F M A M J J A S O N D J F M A M J
WP0 – Project Management & Administration
Ta s k 0.1 Project coordi na ti onTa s k 0.2 Project conta ct poi nt & fa ci l i ta ti ng meeti ngs Ta s k 0.3 Project a dmi ni s tra ti on
Ta s k 0.4 Project reporti ng
WP1 –Market screening/mapping
Ta s k 1.1 – Technol ogy s creeni ng Ta s k 1.2 – Technol ogy ma pWP2 – System Modeling
Ta s k 2.1 – Techni ca l i nputs a nd out puts Ta s k 2.2 – Economi c i nputs a nd out puts Ta s k 2.3 - Model l i ng
WP3 – Technical evaluation
Ta s k 3.1 – Pa ra meter s creeni ngTa s k 3.2 – Loa d/Producti on profi l e s creeni ng Ta s k 3.3 – Conceptua l s ys tem l a yout
WP4 – Development potentials
Ta s k 4.1 - Identi fi ca ti on of ba rri ers Ta s k 4.2 – Concept devel opment Ta s k 4.3 - Prototype devel opmentWP5 – Prototype/existing systems test sites
Ta s k 5.1 - Tes t a t cus tomer s i tesTa s k 5.2 - Da ta l og
WP6 – Dissemination & planning R&D and commercialization
Ta s k 6.1 - Securi ng Pa tent(s ) & pl a nni ng a ppl i ca ti on(s )Ta s k 6.2 - Bus i nes s col l a bora ti on a greement(s ) on s uppl y of DC/DC converters a nd or s tora ge s ol uti ons Ta s k 6.3 - Commerci a l i za ti on pl a nni ng for Loca l Stora ge Sys tems i n 0.4 Ra di a l s
Ta s k 6.4 - Di s s emi na ti on of project res ul ts & networki ng
Milestones/Milepæle
TM0.1 - Project ended & reports del i vered TM1.1 - Fi na l ma rket report
TM2.1 - Loca l Energy Stora ge Model TM2.2 - Opti mi zed Loca l Energy Stora ge Model TM3.1 - Sys tem l a yout defi ned for fi rs t prototype TM4.1 - Prototype
Commercial milestones/Kommerc. milepæle
CM5.1 - Purcha s e order prototype - Ski veCM5.2 - Purcha s e order prototype - Mi ddel fa rt CM5.3 - Purcha s e order prototype – Pri va te hous ehol ds CM5.4 - Letter of i ntent from cos tumers
CM6.1 - Pa tent(s ) i denti fi ed & a ppl i ca ti on(s ) i ni ti a ted CM6.2 - Bus i nes s col l a bora ti on a greement
CM6.3 - Bus i nes s pl a n a nd s tra tegy for depl oyment of ba ttery s ys tems for gri d s ta bi l i za ti on (gri d uti l i ti es )
CM6.4 - Bus i nes s pl a n a nd s tra tegy for depl oyment of ba ttery s ys tems for opti mi zi ng s ys tem owners economy (pri va te a nd i ndus tri a l s ys tem owners )
2015 2016 2017 2018
0.2 0.2 0.2 0.2 0.2
0.1 0.2 0.2 0.2
0.3
0.2 0.2 0.2 0.2 0.2 0.6
0.7 n.n
1.1 1.2
1.3
2.1
2.2 2.3 2.4 2.5 2.6
3.1 3.2
4.1
4.2 4.3 4.4
5.1 5.2
5.3
5.4 5.5
6.1
6.2
6.3
0.4 0.5
PV Bat
Installeret Effekt/kapacitet 7,2 4 kWp/kWh Kr/kWh
Total Pris for installation 72.000 15.467 DKKR 3.867 Batt. Sys PV 37gAz0 Bat. 37gAz0
Forbrug af egenproduktion 30% 43% 47% 33% 9.216 7.670
Feed in tarif første 10år 0,6 DKKR/kWh mer besparrelse 14% 1.547 p.a.
Markeds pris efter 10 år 0,40 DKKR/kWh 0%
kWh pris 2,4 DKKR/kWh
kWh udvikling 4%
Skaleret elforbrug 100% Sys Bat. PV 37gAz0 37gAz0
Solcelle degradering p.a. 0,35% 7,1 10,0 7,0 6.695
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 10 1547 indtjent af battteri
Kunde el forbrug 6.163 kWh 3867 kWh target pris
Summeret indtjening 10år 107.116 DKKR Summeret indtjening 25år 328.566 DKKR
Max sol produktion 6.695 kWh P.a.
El Besparelse 47%
Maximal indtjening 9.216 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 25
Disclaimer:
Data er fo r standart so lår o g vil derfo r afvige fra faktuelle målinger Øko no miske beregninger skal tages med fo rbeho ld
o g kun bruges so m estimerede værdier
Indtjening år 1
ROI kWh produktin p.a.
El besparelse
