The answer probably lies in another provision in the lease. Also, it would be important to understand the leased premises. For instance, it would be important to know if utilities are at the site and currently (or previously) been used. If this is a multi-tenant building, then you may not have individual meters. More facts are needed.
The above statements are provided as general information and not intended as legal advice. Each matter has its own set of unique circumstances that cannot be adequately addressed without consultation. You are strongly advised to hire an attorney licensed to practice law in your state to represent you.