The Patrick administration’s clean energy czar and its top consumer advocate have taken dozens of carbon-producing cab trips — often for short hops — sticking taxpayers with fares when strolls or subway rides offered a more eco-friendly alternative, a Herald review found.

Energy Undersecretary Barbara Kates-Garnick has taken gas-guzzling cabs to a string of conservation-minded events, records show, while Barbara Anthony, undersecretary of consumer affairs and business regulation, routinely hailed hackneys for the half-mile jaunt from her 10 Park Plaza office to the State House.

The Herald review of expense reports found:

• Kates-Garnick’s 28 cab fares claimed from December 2011 through May 2013 included trips to Massachusetts Institute of Technology’s 2013 Earth Day event, last year’s United Nations’ World Environment Day celebration, Cape Wind hearings and speaking events at MIT’s Fraunhofer Center for Sustainable Energy Systems. She billed taxpayers $382.

• Of Anthony’s 186 tax-funded taxi rides between December 2011 and June 2013, 139 were between her 10 Park Plaza office and state offices on Beacon Hill — a half-mile stroll across Boston Common. She billed the state for more than $1,500 in fares.

• Anthony claimed just one T ride during that 19-month period.

• Kates-Garnick took a $25 cab ride last October from Logan International Airport to her office opposite Bowdoin Station, an MBTA Blue Line stop.

• Kates-Garnick took taxis to and from the InterContinental Hotel for the New England Clean Energy Council’s Green Tie Gala. She lives about a block from a T station.

A car’s carbon footprint per mile has been estimated at as much as 10 to 20 times more than walking — which produces only as much carbon dioxide as a person exhales.

State energy officials defended the cab rides to and from the Green Tie Gala, saying, “Undersecretary Kates-Garnick attended as a representative of the Executive Office of Energy and Environmental Affairs.” EOEEA spokeswoman Mary-Leah Assad also told the Herald the taxi rides may be cheaper than reimbursing Kates-Garnick for mileage and parking, adding “time constraints” and “meeting locations” make public transport impractical.

Kates-Garnick, who declined to be interviewed, was listed as a consultant on the website of New York and New Jersey-based M.J. Beck Consulting until Thursday, when the Herald began questioning her connection to the company. Her spokeswoman said she hasn’t worked for the firm since September 2011, when she was named energy undersecretary. A representative for the company, which listed Kates-Garnick as deputy secretary for energy on her online company biography until it was removed Thursday, did not return a call for comment.

Anthony also billed taxpayers for rides to Suffolk University Law School, where she is an adjunct professor and serves on advisory boards. Her staff said the trips were all official state business. Anthony, who regularly took cabs to TV news stations for interviews, declined a Herald interview request.

“Undersecretary Anthony keeps an incredibly busy schedule, conducting business throughout the commonwealth in the interest of educating and empowering Massachusetts consumers and encouraging a fair marketplace among businesses. Work travel decisions are made to ensure she is able to get to her various commitments during the day in an efficient and timely manner,” her spokeswoman said in a statement.