Urban public transit agencies spend billions of dollars each year on workers, durable capital and energy to supply transportation services. During a time of rising concern about climate change, the urban public transit sector has not significantly reduced its carbon footprint. Using data for the...

Decisions of electricity suppliers on investments in low-carbon energy technologies like photovoltaic (PV) and carbon dioxide capture and storage (CCS) depend on the expected profits or surpluses that can be earned. For an assessment of the profitability of investments in PV (and other renewable...