Essential Power LLC is refinancing the existing $565 million ($489 million outstanding) term loan B and $75 million revolving credit facility under a new entity and will change its legal name to "Nautilus Power LLC" at financial close. We are assigning a preliminary 'B+' rating to the proposed $575 million senior secured term loan B and $75 million senior secured revolving credit facility, maturing in 2024 and 2022, respectively. The outlook is stable. The preliminary recovery rating is '2'. The company will use the proceeds from the recapitalization to refinance the debt related to the June 2016 acquisition and also pay a dividend to the sponsor, funds affiliated with Carlyle Power Partners, an investment fund sponsored by The Carlyle Group.