This is the best time to begin using green energy like solar water heating tubes. Governments the world over now offer financial incentives for landlords to install green technology that uses sustainable, renewable energy sources. A number of countries will even supply you with a grant towards the installation of your solar heating tubes or solar panels. Sooner or later, green energy is going to be the order of the day for all building owners. It would be much better to get on board now, while the government is willing to help.