If you're trying to design your new house, think about putting in a bunch of big windows on the home's south side so that during the winter you can get a lot of sun. Make sure you have methods in place to keep excess heat out during the warmer summer months. For more help, consult a contractor who specializes in solar energy.
Here is a review of another Phillips solar powered lighting product purchased from home bargains for £7.99. My video on the solar lanterns proved very popular.