Acknowledgments =============== The |MATPOWER| team would like to acknowledge the support of the numerous research grants and contracts that have contributed directly and indirectly to the development of |MATPOWER| over the years. This includes funding from the |PSERC|, the U.S. Department of Energy, [#]_ the National Science Foundation, [#]_ ARPA-E [#]_ and others. .. [#] Supported in part by the |CERTS| and the Office of Electricity Delivery and Energy Reliability, Transmission Reliability Program of the U.S. Department of Energy under the National Energy Technology Laboratory Cooperative Agreement No. DE-FC26-09NT43321. .. [#] This material is based upon work supported in part by the National Science Foundation under Grant Nos. 0532744, 1642341 and 1931421. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. .. [#] Supported in part by the `"Synthetic Data for Power Grid R & D" `_ project under the `ARPA-E GRID DATA `_ program.