ALTERNATIVE SOURCE OF POWER

I have an idea here . I was wondering why in this world radios and Televisions,Fans ,lawn mowers  and other house hold appliances have been modified to start using solar power .If phones and watches can use solar power why not other household appliances .Even cars Nd railway engines .Mankind is working hard to get an alternative source of power apart from the fossil fuels that produce a lot of harmful substances and gases in to the atmosphere .Solar power is an alternative and by now ,we should have swithced from the harmful kinds of fuel to the none harmfull ,solar power eing among .

Well ,i have this thought and would wish to woek with anyone to bring it into reality.Any help to enable me to archieve this will be highlly accept .I not  a trained scientist but this will serve as an idea.May any of my readers help and direct me to where and how i can engineers to work on my idea .

The davidsons of the united states are hard to communicate with. Because of connectivity problems on the internet .May i hav eyour help please.