The department of energy shall investigate the causes of all accidents in connection with the operation of public utilities in the state, which, in the opinion of the commission or the department of energy, ought to be investigated.
Source. 1911, 164:15. 1913, 145:16. PL 240:35. RL 289:35. 1951, 203:42. RSA 374:37. 1985, 402:20. 2021, 91:273, eff. July 1, 2021.