Allow certain natural gas suppliers to offer carbon offsets

Added new definitions for 'carbon offset' (one metric ton of greenhouse gas removed through various mitigation methods) and 'carbon offset registry' (nationally recognized entity that develops standards and verifies offsets).

Added requirements for retail natural gas suppliers to enter agreements with carbon offset registries that provide project identification, serial numbers, original owner tracking, and status checking systems.

Added new policy provisions to prevent double counting of carbon offsets and ensure environmental marketing claims are substantiated by competent evidence.

Added requirements for suppliers to submit notices to the public utilities commission and maintain publicly available records of their carbon offset programs.

Added provisions allowing the public utilities commission to conduct audits of voluntary carbon offset programs to ensure proper application and that no costs are charged to non-participating customers.

Modified the bill structure to include new sections that establish a comprehensive voluntary carbon offset program framework rather than just amending existing sections.