Setting up a solar system is costly as with panels, inverter and battery the cost of the system comes to about Rs 80 per rated watt. Actual power output averaged over the year is much less than the rated wattage due to variations in solar insolation with seasons and so the actual cost is much more. If on top of that there are problems with servicing then the chances of solar power catching on at the household level are even dimmer. That is what is happening as there are very few people who are prepared to install solar panels.
We installed a solar system in our office in Indore also. In an effort to maximise the use of the solar power during day time I improvised a system that would allow the running of the refrigerator on solar power during the day. However, since the fridge compressor uses power only intermittently there is an intermittent load. Sometimes when the printer is used, very rarely as mostly these days documents are sent by email, then the load shoots up beyond the capacity of the solar system and the inverter trips. Normally, this overload induced tripping can be set right by resetting the inverter but on two occasions the internal fuse of the inverter blew. So a complaint had to be registered with the inverter company. Luckily, the system in our office in Indore has a standard inverter connected to a solar prioritiser unit and so the repair could be done in Indore itself since standard inverters have a big market. However, for remoter locations, once again the problem of service crops up. So for the time being I have switched the refrigerator on to the mains during day time also to avoid more tripping and fuse blowing.
All this underlines the need for more pro-active support to the residential standalone solar power sector by the Government instead of its concentration on large solar parks set up on an industrial scale to supply into the grid. The subsidies provided to such industrial scale solar plants have brought down the cost of power from these plants hugely but the standalone solar power sector continues to dither along.