Have you researched the plant on Google yet? What fuels the plant, is it coal? If so be careful! If you are laid off in 3yrs will that be an issue? Many of the coal plants have closing dates already assigned, Google will tell you. Many are in areas that don't have an abundance of other jobs but that may not apply to you or be seen as an issue in your circumstances.
Biden doesn't really like coal plants much if you can't tell. His preference appears to be shut down the coal plant, outsource the heavy industry they support to China and let them burn the coal there! I started my career back in 2008 and today most of the plants I once worked at are gone and those that survive are going fast.
If the plant's not Coal is it Gas/oil? What's the age of the plant? A lot of the old gas/oil plants were built as conventional boiler units, those are the ones that require the most labor and maintenance but are also least efficient last to operate and first to retire.
Combined cycle plants tend to be the most modern, efficient and likely to stay around the longest, while I never worked at them I think they need the least amount of staff and go thru phases where they'll outsource and send out all their maintenance work to companies that charge a lot of money but come in from all over the country to do repairs as needed.
Don't mean to be too much of a downer but the power plant industry is changing quite a bit and many of these changes are not good for the employees. Don't know what your job horizons are but I suspect that the days of one family securing 3 generations of employment at the local plant are a thing of the past. Whether this plant has enough life in it to meet your career needs maybe a question worth considering.
On the plus side I do think that there will be a lot of future job opportunities for machinists making and repairing the machines that make solar panels in China. Emmanuel Goldstein who posts a lot on this site can probably give you good pointers on how to pursue getting a job in one of those plants if you want