* Carbon capture needed if EU, Russia to curb global warming
* Gazprom taken issue with EU law on separation in ownership
* 'Pragmatic solutions' possible, Oettinger says
BRUSSELS, April 27 (Reuters) - The European Commission, which has begun talks with the EU's biggest natural gas supplier Russia on cementing energy ties until 2050, said both sides had to work on burying carbon emissions or gas would have only a short future as a fuel.
Energy Commissioner Guenther Oettinger told an EU-Russia conference in Brussels that, for the 27-member bloc to continue using gas beyond around 2030-2035, it needed carbon capture and storage (CCS) technology to limit greenhouse gas emissions.
CCS captures climate-warming emissions from power plants and stores the carbon underground, for example in depleted natural gas fields under the sea. But the technology is commercially unproven and costly to build.
"Unfortunately, progress within the EU is very slow. I am also not aware of major activities in the Russian Federation on this issue. We have a joint interest to start working on this issue and develop joint activities," Oettinger said.
Together with Russian Energy Minister Sergei Shmatko, the Commission has agreed to work on an "EU-Russia 2050 road map", Oettinger said, to guide ties between the European Union and its biggest gas supplier.
The Commission, the EU executive, is also seeking a legally-binding EU-Russia agreement, which it has been negotiating with Moscow since 2008.
Relations between the two sides have often been tense as the Commission seeks to reduce its dependence on Russia and to liberalise its internal market.
THIRD ENERGY PACKAGE
Russian pipeline gas export monopoly Gazprom has taken issue with EU law requiring a separation in ownership between suppliers and infrastructure, such as the Nord Stream pipeline, majority-owned by Gazprom, which runs from Russia to Germany.
Gazprom is also leading the South Stream pipeline project into southern Europe.
Oettinger said the EU was "prepared to look at specific cases, with the aim to find pragmatic solutions within the given legal situation".
Ilya Galkin, a senior official in the Russian energy ministry, welcomed the prospect of "a new long-term policy", but said the EU law known as the third energy package was a problem for investment security.
"We have received expressions of interest regarding investment into the South Stream project from many EU countries."
"They support this project directly, but the situation is quite unclear, as far as the protection of investors is concerned," he added.
The South Stream is a rival to Commission-backed plans to bring in gas from Central Asia and the Caspian through a route known as the Southern Corridor as an alternative to Russian supplies.
Oettinger said this did not contradict its relationship with Russia, the EU's prime gas supplier.
"We will continue our efforts to ensure a direct and sizeable access to the hydrocarbon source of the Caspian and Central Asian region. We ask Russia to respect our choices and the choices of the countries in the region." (Editing by Anthony Barker)