Status and Trends in the U.S. Voluntary Green Power Market (2014 Data)

Eric OShaughnessy, Jenny Heeter, Erin Nobler, Chang Liu

Research output: NRELTechnical Report


NREL's annual report on green power markets summarizes status and trends in the voluntary demand for renewable energy. U.S. green power markets have become more complex over time as state-level policies have enabled more avenues for green power purchases. In recent years, community solar, community choice aggregation (CCA), and voluntary power purchase agreements (PPAs) have significantly increased the number of U.S. voluntary green power customers. The community solar model has grown rapidly with 90 projects in 25 states by 2015. Renewable energy sales in CCAs declined slightly in 2014 in response to less favorable economic conditions in Illinois. At the same time, several California CCAs continued to grow, and many more communities are planning to pursue green power through aggregation. Voluntary green power purchasing through bi-lateral PPAs took off in 2014 due to several large-scale agreements signed by information and communication technology firms. Traditional green power options, such as utility green pricing programs and voluntary RECs markets, also grew in 2014. Current trends suggest strong continued growth in U.S. voluntary green power markets.
Original languageAmerican English
Number of pages53
StatePublished - 2015

NREL Publication Number

  • NREL/TP-6A20-65252


  • community choice aggregation
  • community solar
  • utility green pricing
  • voluntary markets
  • voluntary power purchase agreements


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