My work involves modeling energy systems to support public policy development. I use open source and open data methods exclusively and have done so since about 1995. Improving public engagement and developing trust are two key reasons for adopting open techniques in this domain. See, for instance:

Morrison, Robbie (April 2018). “Energy system modeling: public transparency, scientific reproducibility, and open development”. Energy Strategy Reviews. 20: 49–63. ISSN 2211-467X. doi:10.1016/j.esr.2017.12.010. CC BY 4.0 license.