Oh i agree, photovoltaic panels are a waste of time and money in this country. The only reason renewables are profitable in the UK are due to ROCs or FITs (depending on who is generating it).
Fossil fuels and nulcear are also heavily subsidised, the difference is that that the levelised cost of energy (p/kWh) for renewables is continuing to fall due to increase economies of scale and R&D, meanwhile the cost of fossil fuels continues to rise due to scarcity.
Wind power is already cheaper than nuclear for electricity generation, parity with Gas will happen within the next few years. Coal is out of the running for new capacity due to high carbon emissions & high cost/risks of carbon capture & storage.
Our north sea reserves are dwindling and we are now net importers of oil and gas. So it is right that we should diversify our energy supply to minimise imports from unreliable sources like Russia, and make use of the excellent wind, wave, tidal and hydro resource that we have in this country.
Also those who compare emissions from Diesel engines with emissions from power stations, overlook the increased efficiency of electric stock due to regenerative braking, also the greater efficiency and more comprehensive pollution controls of a 500MW power station compared with a 500kW train engine. Also that grid electricity is now about 10% renewables and rising.