STx, an interesting twist away from the usual tx output power comments. I agree with your solar panel output. However your calculation is based on tx output power, not electricity consumption. The daily electricity consumption is at present around 280Kw (source PM) for the current 4Kw EMRP. A 24Kw solar panel array will only generate approximately 56Kw of electricity daily, a saving of around 20%. At best, using the most efficient solar panels at Orfordness, it will require a minimum of 120Kw of solar panels to be self sufficient at the current 4Kw EMRP, let alone any future increase. Scottg.