R.I. Gen. Laws § 39-35-2: Decommissioning plan required.

The developer of any ground-mounted solar system shall, at the time they apply for required permits from the municipality of jurisdiction, submit a plan for decommissioning to include an estimate of the financial cost of implementing the plan. The municipality shall be required to keep the decommissioning plan on file; provided that, doing so does not make the municipality responsible for its implementation. Each municipality may require the developer to post a performance bond to cover the cost of its decommissioning plan.