Did you and the landlord talk about who is to pay for utilities?
For example, if there was a discussion with the agreement that you the tenant would be paying for all utilities but when the landlord was writing up the agreement he forgot to write out the agreement correctly, most judges likely will find that you are responsible for the utilities.
On another hand, if the agreement before it was signed was that the landlord is going to pay the utilities, the landlord likely cannot change the agreement now.
Even if the agreement is that the landlord would pay the utilities, there likely is a provision in the agreement that the tenant is responsible for paying excess usage. For example, a tenant cannot expect to heat the house to 100 degrees in the winter and expect the landlord to foot the heating bill.
You likely will need to review the specific facts with your attorney to find out your legal options.