27 September 2021
5% GST applicable. The supply of Solar Power Generating System along with other goods and service of designing, erection, commissioning & installation of the same is classified under SI no. 234 of Notification No. 1/2017-Central Tax (Rate) dated 28.6.2017 as amended vide Notification no. 24/2018-Central Tax (Rate) dated 31.12.2018 and SI no. 38 inserted in Notification no. 11/2017-Central Tax (Rate) dated 28.6.2017 vide Notification no. 27/2018-Central Tax (Rate) dated 31.12.2018.
My agent send me 45th Meeting of the GST Council, Lucknow 17th September, 2021 press release in it Major recommendations on GST rate changes in relation to Goods [w.e.f 1.10.2021 unless otherwise stated] Specified Renewable Energy Devices and parts from 5% to 12%.
27 September 2021
Yes it will increase to 12% as per 45th GST council meeting but haven't seen the notification as yet. Also note that the SITC of solar power generation system is charged in 70:30 proportion like 5%(12% if changed) on 70% of the contract value and 18% on the remaining 30%.
27 September 2021
There is no appox time. Fresh rates will be applicable as when the notification is issued. So you will have to keep yourself updated.