(Adds statistics office comments, crown)
By Peter Laca
BRATISLAVA, June 3 (Reuters) - Slovak GDP growth slowed down in the first quarter but the central European country remained the EU's hottest economy, at risk of an inflation rise at the time of euro adoption planned for next year.
The Statistics Office said real first-quarter gross domestic product rose by 8.7 percent on an annual basis, matching the flash estimate released on May 15.
Slovakia, which is set to become the 16th member of the euro zone next year, has had one of the highest GDP growth rates in the European Union since joining the bloc in 2004.
Expansion peaked at 14.3 percent in the last quarter of 2007, helping the central European country narrow the wealth gap with the richer west. Slovakia's GDP per head is estimated at 71 percent of the EU average this year.
Resurgent domestic demand, fed by rising household consumption after years of belt-tightening reforms, has helped keep the headline figure up.
Investment has been rising, mainly thanks to large projects like those of car makers PSA Peugeot <PEUP.PA> of France, South Korea's Kia Motors <000270.KS> and electronics firms Samsung <005930.KS> and Sony <6758.T> building new factories.
Exports were a key factor behind growth in recent quarters, but the structure appeared to be shifting more towards domestic consumption this year.
"Growing domestic demand should be the main driver of economic growth also in the coming quarters," said Frantisek Bernadic, head of the National Accounts Department at the Statistics Office.
Analysts pointed to accelerating household spending as a possible source of upward pressures on consumer prices.
Separate data showed 6.2 percent real wage growth in the first quarter, which observers said was also adding to possible inflation risks.
"Further acceleration in household consumption supports our view that the NBS has to be cautious as demand-led pressure on inflation is likely to rise gradually," said 4Cast analyst Piotr Matys.
"Thus we expect the central bank to keep rates on hold in coming months."
Bernadic said, however, that in the Statistics Office's view the economy did not appear to be overheating so far.
The central bank NBS will have to align its interest rates with the euro zone as part of the euro adoption process, a move that will take away independent monetary policy and thus put the burden of fighting inflation on fiscal policy.
The government has pledged to cut the budget deficit to keep a lid on inflation.
The main Slovak two-week repo rate is now 4.25 percent, 25 basis points above the euro zone benchmark.
CROWN NO HARM TO TRADE
First quarter GDP signalled that Slovakia's industries can cope with a rising currency, which had firmed by 9.9 percent to the euro in the first three months of the year, in local currency terms.
The crown's rise accelerated in April and May as investors expected the country to seek a strong conversion rate for the euro adoption to contain future inflation pressures.
The rise had led to a 15 percent revaluation of the crown's peg to the euro in the exchange rate grid ERM-2 last week.
The market widely expects the actual conversion rate for swapping the crown for euro to be set around the new central rate of 30.1260, which, the Statistics Office said, should not be a major blow to Slovakia's trade.
"Even an eventual fixing of the conversion rate near the 30-crown level should not have a significant impact on foreign trade balance," Bernadic said. For GDP details, please click on [
] [ ] (Reporting by Peter Laca) (Editing by George Obulutsa)