I just went to log into my BGE account online and this notice was at the top of the page: "Customer bills will increase effective with usage starting on Jan. 1, 2023 and as authorized by the Maryland Public Service Commission. The average residential electric bill will increase by $2.97 per month and the average residential natural gas bill will increase by $3.08 per month. See bge.com/myp (link) for details".

So a rate hike is one contributing factor at least.

Edit to add: My bill is $68 higher for the last billing cycle (Nov-Dec). My online account lists the likely reasons why- "Weather" and "Increased usage".