PV-Battery-Diesel Hybrid Solution in the Atacama Desert

Transcription

1 PV-Battery-Diesel Hybrid Solution in the Atacama Desert Hotel Tierra Atacama expands renewable energy share Intersolar Europe, Munich May 3 st, 207

2 Since 203 small PV plant integrated in diesel grid of luxury hotel San Pedro de Atacama, Chile m elevation > kwh/m 2 GHI Hotel Tierra Atacama Off-grid power supply 3 diesel gensets (200 kva, 2 x 50 kva) 580 MWh electricty demand First implementation stage kwp > 2,200 kwh/kwp yield 6,000 liter diesel savings 2

3 Power - Off-Grid Power Conference, Intersolar Europe, Munich Power Integration of battery to turn off diesel gensets at daytime Today: PV-Diesel-Hybrid From Oct 207: PV-Battery-Diesel-Hybrid 90 kw 80 kw 70 kw S i Load profile PV Total Bruto Diesel profil e Neto PV Total Neto Diesel min Load 00"kW" 90"kW" 80"kW" S i Load"profile" PV"Total"Bruto" Diesel"profil e "Neto" Battery charge Battery discharge Battery discharg 70"kW" 60 kw Load 60"kW" 50 kw 40 kw Reduced load of diesel gensets 50"kW" 40"kW" 30 kw 30"kW" 20 kw 0 kw PV profile 20"kW" 0"kW" Gensets turned off PV profile 0 kw Hours 0"kW",000" 2,000" 3,000" 4,000" 5,000" 6,000" 7,000" 8,000" 9,000" 0,000",000" 2,000" 3,000" 4,000" 5,000" 6,000" Hours 7,000" 8,000" 9,000" 20,000" 2,000" 22,000" 23,000" 24,000" 3

4 Detailed system dimensioning based on real data Input data Targets to meet Real performance data from existing PV plant (23.04 kwp) Silence at daytime, gensets turned off Annual load profile with in total ~ 580 MWh p.a. Diesel genset topology (200 kva, 2 x 50 kva) Cost data, diesel price Significant diesel savings of > 50% IRR > 0% System stability Improved operating conditions for gensets Simulations Optimum set-up of PV plant and battery size In collaboration with Qinous team 4

5 Future size with 56 kwp PV plant and 80 kw/ 330 kwh Li-Ion battery storage & energy management system PV plant Li-Ion energy storage solution + Additional PV plant of 32,60 kwp 490 modules (Made in Germany) 5 additional inverters (Made in Germany) Module area: 80 m 2 Li-Ion battery with 80 kw, 330 kwh High lifetime Genset and PV plant control 20 container or small compact housing 60% diesel savings, 8-2 hours daily time w/o gensets Small compact housing just decided 5

6 The future plant with in total 56 kwp on limited space and 330 kwh battery capacity Diesel genset room PV plant PV plant PV plant QINOUS Battery Solar carport Organic garden Important view for hotel guests 6

7 Core levers for savings Substitution of diesel gensets by solar power at daytime Strong effect, considered in business model 2 Battery energy supply (stand-by) in the night (e.g. :00-4:00) instead of inefficient diesel genset supply Strong effect, considered in business model 3 Some PV excess energy (when battery is fully loaded) to substitute liquid gas for water heating Additional benefit, not yet quantified 4 Energy efficiency measures to reduce energy consumption Always recommended, which is independent from PV solution 7

8 Exemplary daily profile at high season: > 9 hours of silence (gensets off) Example for December Time without gensets 8

9 Exemplary daily profile at lower season: > 2 hours of silence (gensets off) Available solar energy, which cannot be used Battery fully loaded Example for July Time without gensets 9

10 Simulated system performance Use of solar electricity 5% 0% Example December 85% E_Solar_Direct E_Solar_Ba ery E_Solar_Loss 23% 5% Year E_Solar_Direct E_Solar_Ba ery 3% 72% E_Solar_Loss 30% Example July 57% E_Solar_Direct E_Solar_Ba ery E_Solar_Loss E_Solar_Total E_Solar_Direct E_Solar_Battery E_Solar_Loss kwh kwh kwh kwh 0

11 Power in W - Off-Grid Power Conference, Intersolar Europe, Munich Switch-off of gensets in the night, power supply by battery W Daily fuel savings - Hotel Tierra Atacama W W P_Load P_Solar (AC) P_Gen (AC) > GENSETmin Deload Load on Bat W W W W 000 W 00:00:00 03:00:00 06:00:00 09:00:00 2:00:00 5:00:00 8:00:00 2:00:00 00:00:00 2 Time without gensets (battery as stand-by power supply)

12 Summary of savings ~ 580 MWh ~ MWh ~ 550 MWh ~ 320 MWh 2 Lever ~ 58% share of solar energy ~ 230 MWh Lever ~ liter Current energy demand Less demand due to supply by battery stand-by New demand Solar energy at daytime with battery support Residual diesel demand PV-Battery-Diesel system provides high renewable energy share, setup is ready to increase battery capacity stepwise 2

13 Summary of benefits - Plant as a role model for making San Pedro de Atacama a green village In average 8-9 hours of silence at daytime and some hours in the night 2 Reduction of energy consumption due to no need for a minimum genset load in the night 3 60% diesel savings 4 Significant increase of genset lifetime 5 Reduction of annual O&M costs for gensets 6 IRR > 6% / payback time of 8 years 3

14 Project is part of the worldwide Renewable Energy Solutions (RES) Programme 205/ coordinated by dena and co-financed by the German Federal Ministry for Economic Affairs and Energy (BMWi) within the German Energy Solutions Initiative. Supported by: Project Lead: Project Implementation: Project Partner: In cooperation with: 4

15 THANK YOU Project Office Frankfurt Deutschherrnufer 32, Frankfurt, Germany Tel +49 (69) Fax +49 (69) Project Office Berlin Wilhelminenhofstraße 75, 2459 Berlin, Germany Tel +49 (30) Fax +49 (69) Project Office Chile Alcántara 200, Of. 303, Las Condes, Santiago, Chile Tel +56 (2) Project Office Egypt Building 70, Street 28, 5th District New Cairo, Egypt Tel