The resources authority received over 400 applications for subsidies on alternative energy devices in less than a week since the scheme was launched, Resources Minister George Pullicino said.
Already 247 applications for solar water heaters, 147 for photo-voltaic cells and 12 for double glazing have been received under the scheme, which started on Monday and will run for a year.
Those who installed systems before February 15 can still apply for assistance by May 15. This does not apply for those who installed double glazing.
The measure was announced in the last budget with a €2 million grant and applies for solar water heaters, photovoltaic panels, insulation and double glazing.
Applicants will receive up to two thirds of the purchase price of a solar water heater for a maximum of €460.
It is estimated that 4,600 families will benefit.