A report commissioned by the Rhode Island House of Representatives raises questions about whether the state should enter into a 20-year agreement for gambling services.

Christiansen Capital Advisors of Maine said its standard recommendation has been for 10-year contracts, with optional extensions, since 2005.

CCA also found that Rhode Island is paying considerably more than its peers for a video lottery terminal management system covering just two facilities, Twin River’s sites in Lincoln and Tiverton. If that work were put to bid, CCA said, the state could save about $7 million a year.

The company found some things to like in the proposed 20-year contract extension for IGT Global Services, the company now providing more of RI’s gambling services. CCA called the proposal “a strong technical proposal” and said a mandated acceleration schedule for replacing video lottery terminals “is a marked improvement over the previous contract.”

Gov. Gina Raimondo has backed a 20-year extension for IGT, calling it the best way to maintain the company’s workforce of about 1,000 jobs.

Twin River has campaigned for an opportunity to bid on the work.

General Assembly approval of an extension is required. House and Senate committees held separate hearings on the issue last year, without taking a vote.

Among other findings, Christiansen questions whether Rhode Island should consider a casino-based model for paying for lottery services, since Twin River’s sites have over time become de facto casinos, rather than a lottery-based approach.