(Reuters) - Myanmar's military rulers have approved new investment in projects worth nearly $2.8 billion, including a liquefied natural gas (LNG) power plant that will cost $2.5 billion, the country's investment body said.

Approvals for 15 projects were given on Friday by the Myanmar Investment Commission, according to a statement on the website of the Directorate of Investment and Company Administration.

The announcement comes with much of Myanmar's economy paralysed by protests and strikes since the army seized power on Feb. 1. Research firm Fitch Solutions has forecast the economy will contract by 20 percent this year.

In addition to the plant to generate power for local needs, other projects approved included for livestock, manufacturing and services sectors, the statement said.

It did not give details of the companies behind the projects or which countries they are from. The biggest investors in Myanmar in recent years have been China, Singapore and Thailand although much of the investment from Singapore has been channelled from elsewhere.

Most of Myanmar's electric power is currently generated from hydroelectric projects, but LNG has been seen as increasingly important for a country whose economy had boomed during a decade of democratic reforms, leading to erratic electricity supplies.

(Reporting by Reuters staff; Editing by Matthew Tostevin & Simon Cameron-Moore)