🚆 Transit Decarbonization: PV Applications for Infrastructure and Vehicles

Solar power is increasingly being used to reduce the operational costs and carbon footprint of public transportation infrastructure, from vehicle roofs to bus shelters.

1. Applications for Transport Infrastructure

Large, unused surface areas are ideal for solar arrays.

• ✅ **Bus Stops/Shelters:** Small integrated PV panels power LED lighting, electronic displays, and USB charging ports at the stop, enhancing rider safety and experience.
• ✅ **Train Stations/Depots:** Massive rooftop arrays power station lighting, ticketing machines, and offices, often using rail yard rooftops and maintenance sheds.
• **Rail Electrification:** Direct solar power can be fed into the catenary (overhead) lines of electrified rail networks in a process known as Direct Wire Solar.

2. On-Vehicle Solar (Buses and Trains)

PV systems can offset the auxiliary loads of the vehicle.

• **Battery Preservation:** Flexible solar panels on buses and trains charge the vehicle's low-voltage battery, reducing the load on the alternator/engine, saving fuel, and extending battery life.
• **Ancillary Loads:** Powers HVAC fans, lighting, and communication radios, improving passenger comfort.

Solar as a Resiliency Measure

Stand-alone solar power at remote transit stops provides essential power for emergency communication and lighting even if the grid fails, significantly improving resiliency for critical public services. 💡