The government's proposed incentives to boost renewable energies will probably see growth in the solar and geothermal power industries, but have disappointed operators in the wind energy sector, lobby groups said.

A government panel Wednesday recommended that solar power suppliers be paid ¥42 per kwh of their electricity, three times the rate of ¥13.65 industrial and commercial users pay. It also suggested the government's feed-in tariff system for solar power remain in force for 20 years.

The feed-in tariff system, currently pending approval by the industry ministry, will be introduced in July to spur investment in solar, wind, geothermal, biomass and hydroelectric power.