Thanks to the early start and good relationships with neighbouring governments, Thailand is "a leader in Cambodia, Laos, Myanmar and Vietnam, and will continue to expand into these countries," she said. Thailand's largest solar company, Superblock, plans to branch out with a $1.8 billion investment into wind farms in Vietnam. And Thailand's biggest wind power generator, Wind Energy Holdings, plans to invest in solar, hydro and biomass to back up its capacity, not just locally but also in Vietnam, Cambodia, Laos, Myanmar, Bangladesh and Australia. Even in coal, a sector recently shunned due to public pressure to invest in cleaner energy, Thai firms are growing. Miner Banpu in February reported a more than 250 percent surge in annual profit, partly because of new coal mine investments, including in Indonesia, and power projects in China and Japan.