* Environmental concerns, benefits key obstacles-PM
* Energy minister says no govt decision is yet taken
* Bulgaria to await environmental assessment-govt
* Prime Minister demonstrates political will, analysts say
* Greece says committed to Burgas-Alexandroupolis link
(Adds Greek reaction)
SOFIA, June 11 (Reuters) - Bulgaria is likely pull out of a trans-Balkan oil pipeline to carry Russian crude through its territory to Greece, but will first await an environmental assessment on the project, officials said on Friday.
Speaking after a meeting with European Union ambassadors, Prime Minister Boiko Borisov said Sofia would not participate in the project due to strong opposition from residents of the Black Sea coast where the 300-kilometre pipeline was due to start.
Hours later, the government press office played down Borisov's words, quoting him as saying that the Balkan country would await an environmental assessment on the project before it decides whether or not to abandon it.
Borisov said that the pipeline, estimated to cost a total 1 billion euros ($1.2 billion), posed serious environmental risks and did not offer enough economic benefits for Bulgaria.
"This is a project that the population of Burgas do not want," he said. "We all saw what happened in the Gulf of Mexico."
Economy and Energy Minister Traicho Traikov told Reuters the cabinet had not officially decided to scrap plans for the pipeline, but said the outlook did not look good.
"There is no decision to pull out of the project. What we have are very serious arguments that are negative," he said.
Traikov expressed concern whether Russia will provide the necessary oil for the link, saying that if the pipeline project fails, it would not only be because of Bulgaria.
Greece had also questioned Russian oil supply. [ID:nLDE61F0KQ]
But on Friday Athens said it remains committed to the pipeline that would pump up to 50 million tonnes of Urals crude a year from the Black Sea port of Burgas to Alexandroupolis on the Aegean.
"The Greek side remains committed to the completion of this project and continues its efforts towards this direction," government spokesman George Pelalotis said.
DEPENDING ON RUSSIA
Once Moscow's most obedient satellite during communist times, Sofia -- under tough-talking Prime Minister Boiko Borisov -- has started to review Russian-backed energy projects to ensure they match national interests and the EU agenda.
Sofia has declined a Russian loan for a new, 2000 megawatt nuclear power plant Belene and Borisov reiterated on Friday the plant will be built only if a western investor for it is found.
Analysts say the move shows Bulgaria's readiness for closer ties with the EU after the previous Socialist-led cabinet irked Brussels and the United States by appearing to side with Russia.
"Russia will not be pleasantly surprised... But it is time to understand that Bulgaria will carry out only projects that make economic sense for it," said Ognian Minchev, Sofia-based analyst with Institute for Regional and International Studies.
"This is a clear demonstration of firm political will and the government's desire for a bigger energy independence," said Kiril Avramov with independent think-tank Political Capital.
Bulgaria's only nuclear plant is Russian-built and it is fully dependent on Russia's natural gas supplies. The country's only oil refinery is controlled by Russia's Lukoil (LKOH.MM).
In 2007, after decades of political bickering, Bulgaria agreed with Russia and Greece to build the pipeline, allowing Russian crude to bypass the traffic-clogged Bosphorus Straits.
Russia holds 51 percent in the link, while Sofia and Greece kept 24.5 percent each.
The residents of Burgas and nearby Black Sea resort towns held a series of protests opposing the project, which they fear may cause serious environmental damage to the coast and scare away holiday makers, their main livelihood.
(Additional reporting by Renee Maltezou and Dina Kyriakidou; Editing by Alison Birrane)