New Hampshire residents facing drastic increases in their electric bills could get some relief via several proposals outlined Wednesday by Gov. Chris Sununu. The Office of the Consumer Advocate has said utility bills are likely to rise by about 50% based on recent rate changes filed with the Public Utilities Commission. Utilities are passing along their higher supply costs, driven up in part because the global market for natural gas has been shaken by the war in Ukraine. Sununu wants to use $60 million in state surplus money to provide nearly every ratepayer with a $100 credit, with another $7 million shoring up the state’s electric assistance program for low-income residents. Participants in the federal Low Income Home Energy Assistance Program meanwhile would get a boost via rolling over $32.5 million in unspent funds — $7.5 million this summer and the rest next winter.