The document outlines a project aimed at enhancing e-mobility through the development of a solar-powered bike rental and charging infrastructure in the Flims-Laax-Falera region. Key objectives include expanding charging stations, integrating renewable energy sources, and attracting more tourists while promoting CO2-neutral mobility. Financial strategies highlight potential revenue from local subscriptions and solar energy feed-in options to support the initiative.

1. CO 2 Neutral E-Mobility ISUenergy project group no. 2 Sanem Genc (Turkey) Christina Braun (Switzerland) Julius Kühn (Germany) Evelina Kompare (Slovenia) Cagdas Karakurt (Turkey) Christina Kontaxi (Hellas)

2. Overview The Flyer Bike experience Ideas and Aims of our Project - Infrastructure - Energy Source - Social Acceptance PV Integration: Off-Grid and Feed-In Summary and Ideas for Financing

3. Product specifications : Autonomy ~ 30km Engine has pedaling top speed of 25km/h Price of bike including battery: ~ 2000 EUR Battery specifications : 10 Ah Lithium-Ionen Mangan, 26 V. Charging time 3-6 h Weight: ca. 2.6 kg Life time: c a. 500 charging cycles, 3-4 years Overview The Flyer Bike Experience (1/9/2009)

4. Target Group: Mainly targeted to tourists Summer season (May to September) Infrastructure: 5 flyer rental stations 7 hotels with flyer bikes 15 batteries exchange stations (hotels, restaurants) Disadvantages: - not always 24hrs/day availability - charging of batteries is dependent from the grid, at the specific charging stations Introduction Current State of Flyer Bike Flims-Laax-Falera

5. Flyer Electro Bike m ap

6. Idea and Aim of the Project (1/2) Build on the existing Infrastructure… … but make it more flexible and cleaner Expand the Infrastructure: Keep current stations ( 5 flyer rental stations , 7 hotels with flyer bikes ) and expand the 15 batter y exchange stations to a total of 30 stations located at bus stations Advantages: + Increase of the availability of charging stations + Increase of the visibility of the Flyer electrobike + Increase of the mobility of the users Use the Sun as the Source of Energy: Replace the grid dependent charging stations with a dual strategy of PV integrated systems: 1. off-grid charging stations at the bus stops 2. charging stations with PV modules, connected to the grid for the larger charging stations Advantages: + Clean, CO2 neutral mobility + Abundance of energy source + For larger stations: possibility of feed-in solar energy to the grid

7. Idea and Aim of the Project (2/2) Expand the Target Group: Make the charging station available for the local population for them to use with their own electro bikes!  Example: use a card with integrated chip to open the charger stations at the bus stops  Sell subscription to the locals who own an electro bike to use the stations along with the tourists who rent the bicycles Value Added to the Region: The Flims-Laax-Falera region has an overcapacity of beds in the summer Interest to attract more tourists during the summer Advantages: +The clean mobility concept – powered by the sun – has the potential to attract more environmentally conscious tourists + The clean mobility concept will add to the current commitment of the region to use more environmental-friendly solutions (see “Gr ünbünden” on the bus) + The charging stations will increase the mobility of both tourists and the local community, as well as the number of users! + Interesting and innovating solar architecture of PV bus station

8. PV Integration I: Off-Grid Charging Stations @ Bus Stop (1/2) Off-Grid Charging Stations at the Bus Stop Install charging station at the 30 Bus stops in the Flims-Laax-Falera Region with 3 batteries using Solar Energy only to charge the bike

9. PV Integration I: Off-Grid Charging Stations @ Bus Stop (2/2) Schematic Overview

10. Calculations for Off-Grid Charging Stations at Bus Stations (1/2) Estimated global irradiance in Falera by PVGIS* * http://re.jrc.ec.europa.eu/pvgis/apps3/pvest.php # Average solar Irridation 408.31 Wm2 PV Cell First Solar 75W Thin Film CdTe Efficiency: 10.7% Nr of Batteries in Charger 3 batteries Average charging time 6hrs per battery Energy needed to charge the System 256 Wh/m2 x 3 batteries = 768Wh Area needed for PV 2.93m2 Power installed 300W Total Cost of one Charging Station 3 EUR per Wp installed = 900 EUR + 100 EUR for storage battery Total 1000 EUR Infrastructure Bus Stop is not included Cost of 30 charging stations 30´000 EUR

11. Calculations for Off-Grid Charging Stations at Bus Stations (2/2) For the system that has 3 charger : Average solar radiation during summer season in Falera : 408.31 (W/m 2 ) We use First Solar 75 W solar panel with %10.7 eff. (120cmx60cm =0.72 m2) Electrical Input : 408.31 (W/m 2 ) x %10.7 = 43.69 (W/m 2 ) Average charging time : 6 hours per battery Energy that we get from sun : 43.69 (W/ m 2 ) x 6 hours = 262.14 (Wh/m 2 ) Energy that we need to charge system : 256 (Wh) x 3 (battery) = 768 (Wh) Area that we need : 768 (Wh) / 262.14 (Wh/m 2 ) = 2.93 (m 2 ) Power that we need : 2.93 m2 x 43.69 W/ m2 = 128.01 W (2 PANELS) Power that we need to install : 2.93 m2 / 0.72 m2 = 4.07 (4 PANELS) 4 x 75 W = 300 W

12. PV Integration II: Grid-Connected PV Charging Station Schematic Overview

13. Calculations for Grid-Connected PV Charging Station (1/2) Estimated global irradiance in Falera by PVGIS* Average solar Irridation 408.31 Wm2 PV Cell First Solar 75W Thin Film CdTe Efficiency: 10.7% Nr of Batteries in Charger 10 batteries Average charging time 6hrs per battery Energy needed to charge the System 256 Wh x 10 batteries = 2.5 kWh Area needed for PV 9.77m2 Power installed 1050W Total Cost of one Charging Station 3 EUR per Wp installed  3000 EUR Cost of 12 charging stations 36´000 EUR

14. For the system that has 10 chargers : Average solar radiation during summer season in Falera : 408.31 (W/m 2 ) We use First Solar 75 W solar panel with %10.7 eff. (120cmx60cm) Electrical Input : 408.31 (W/m 2 ) x %10.7 = 43.69 (W/m 2 ) Average charging time : 6 hours per battery Energy that we get from sun : 43.69 (W/ m 2 ) x 6 hours = 262.14 (Wh/m 2 ) Energy that we need to charge system : 256 (Wh) x 10 (battery) = 2560 (Wh) Area that we need : 2560 (Wh) / 262.14 (Wh/m 2 ) = 9.77 (m 2 ) Power that we need : 9.77 m2 x 43.69 W/ m2 = 426.85 W (6 PANELS) Power that we need to install : 9.77 m2 / 0.72 m2 = 13.57 (14 PANELS) 14 x 75 W = 1050 W Calculations for Grid-Connected PV Charging Station (2/2)

15. Summary and Ideas for Financing Total Costs For off-grid bus stations: 30´000 EUR For larger PV modules with feed-in option: 36´000 EUR Total Installations Off-grid bus stations: 30 PV modules with feed-in option: 12 Total Capacity Off-grid bus stations: 9´000 W PV modules with feed-in option: 12´600 W Total 21´600 W Financing Possibilities - Flims Laax Falera Tourismus AG - Sell subscription for charging stations to the locals - Generate revenue from feeding-in solar energy to the grid - Support from the canton Grünbünden ?

16. Further Ideas Expand renewable energy sources on the bike Integrate dynamo systems for downhill on electro-bikes for the expansion of the off-grid system PV system on the bike Expand the Reach Study for expansion of the system in remote regions Expansion of the system introducing larger charging stations Raise Awareness Bus stations as space for rising awareness about solar energy and alternative mobility, e.g. “Waiting for the bus? Use a solar-powered e-bike!”

17. Thanks for your attention… … Questions? Get on the solar E-Bike!