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Why Solar Makes Sense for Indian SMEs - Part 2


Having observed my 13.32kwp office system for three months(Blog Part 1), I decided to go for a larger solar PV system in my Tumkur plant.

I decided to go for a polycrystalline (since roof area was not a limiting criteria) PV panel system with Solaregde optimizers and inverters. Also during the factory construction planning stage in 2017-2018, we had made necessary arrangements with a sufficient space for fixing of solar power meter etc in the HT meter cubicle. Due to this the electrical paneling work was minimal and only LT Panel some work was required.

The sanctioned load for this HT connection is 250 KVA and hence as per government rules we could have gone in for a maximum of 80% (200 kWp) of that for a solar PV system. The usage data in this factory was put in a PowerPoint and data was as below:-

The average units (kWh) per month was around 32-33 MWh. Hence we planned a 165.49 kWp system which will be on net metering basis. This system on average should generate 22.7 MWh and cover ~70% of the energy demand.

Finally considering the number of inverters per kWp of installation, roof area and cost, we finalized with Ecosoch (who did my earlier 13.32 kWp system) for a 165.49 kWp system.

These were the initial renders how panel installation layout was planned:-

The installation was to begin, the panels, inverters etc were delivered to the site and lo and behold the pandemic hits.

The process comes to a standstill. Almost 2-3 months are lost and work began slowly as restrictions began to ease.

First the bases for mounting the panels were fixed on the metal sheet roofing as shown below:-

Then the panels are fixed on them and aligned with proper spacing considering cleaning of panels will need to be done.