On page 14, after line 39, insert the following:

"(13) Notwithstanding any other provision in this section, natural gas customers using more than 12,000 thermal units shall not be required to pay more than two percent of their billed margin revenues in rates per year for gas decarbonization costs incurred pursuant to decarbonization and electrification measures included in an approved integrated system plan, and electric customers with a load greater than one average megawatt shall not be required to pay more than two percent of their billed revenues in rates per year for electrification costs incurred pursuant to decarbonization and electrification measures included in an approved integrated system plan. Gas decarbonization costs shall not be recovered from transportation only customers. Electrification costs shall be recovered only from bundled electric customers."