To install the solar panels no,you don't need to fill any forms but to connect it to the grid yes you need to follow the procedures of your utility company. In maharashtra you first need to apply for technical feasibility followed by approval and then an agreement for net metering arrangement. Each of the step requires forms and the last step is on a u20b9200 stamp paper. That's all it is for basic installation.Now if your need subsidy it's a different ball game. You need to have an agreement on au20b9100 stamp paper, you installer needs to do the same, pra set of documents it's a 16 point check list,so yes that's a good deal of forms to be dealt with.I presume it's the same for all the states across the country.Hope that answers your query.You can get back if your have any questions.