Alert,
Short answer to this one im afraid, no!, depending on your heatpump, but generally for a 2500sqft house wind turbine and solar can't produce enough power to run a heat pump. It will help to slow down your ESB meter thats all. So you'll have to weigh up the odds weather you want to spend the excess money to slow down your meter and unlikely get your money back, or pay for a good heatpump installed be competent suppliers, insulate the house to the neck.