How much of my Electricity Bill is funding the Solar Feed in tariff?

now that so many people are fitting Solar Panels to take advantage of the Feed in Tariff of 43.3p per Kw produced..how much of my Electricity Bill is going towards those people who have solar panels installed..some people ar making nearly �2000 per year now with a 3.8kw system..& the Energy companies HAVE to pay out for this..Ultimately we all are paying for this thru our energy bills..