Industrial Solar EPC in Telangana

For a factory or warehouse, rooftop solar is not just an energy bill conversation - it's a contracted load, demand charge, and tax planning conversation. Get those three right and the project pays for itself far faster than the brochure number.

Rule 1: System size ≤ contracted load

TGSPDCL/TGSPDCL net-metering rules cap the solar plant at your contracted (sanctioned) load, in kW. A factory with 200 kVA contracted demand (≈ 180 kW) cannot install a 250 kWp plant under net metering, no matter how much roof you have.

Practical implication:

• Audit your last 12 months of MD (Maximum Demand) before sizing
• If you're consistently hitting 90%+ of contracted demand, consider revising contracted load upward before the solar application - it expands your eligible system size
• For factories with surplus roof but low contracted load, gross metering or captive consumption without export is the workaround

Rule 2: CEIG certification above 56 kWp

In Telangana, any rooftop solar plant above 56 kWp (the 50 kW DC threshold with the standard 1.12 oversizing buffer many designers use crosses this quickly) requires inspection and approval from the Chief Electrical Inspector to Government (CEIG) before commissioning.

What CEIG actually checks:

• Structural design with wind-load calculations
• Earthing and lightning arrestor design
• HT/LT interconnection drawings, signed by a Class-A electrical contractor
• DC/AC SLD and protection coordination
• Cable sizing and conduit/tray routing

Skipping or mis-filing CEIG is the single most common reason industrial commissioning slips by 4–8 weeks. Build it into your timeline from day one.

Rule 3: Demand charges are where the hidden savings live

Most industrial bills have two main components: energy charges (per unit) and demand charges (per kVA of contracted/recorded MD). Energy charges run ₹7–₹8/unit for HT, ₹8–₹10 for LT industrial. Demand charges add another ₹400–₹475/kVA/month.

A well-designed solar plant doesn't just cut energy units - it can shave recorded MD during daytime peaks if sized and configured against the load curve. On a 500 kVA factory, even a 15–20 kVA reduction in recorded MD is ₹7,000–₹9,500/month, recurring, on top of the unit-level savings.

This is why we always ask for 15-minute interval data before sizing. A monthly bill isn't enough.

Rule 4: Accelerated depreciation is real money

Under Section 32 of the Income Tax Act, solar plants qualify for 40% depreciation in year 1 (plus an additional 20% in some cases under specific provisions), on the eligible plant cost. For a profitable factory in the 25% corporate tax slab:

• ₹1 crore plant
• Year-1 depreciation: ₹40 lakh
• Tax shielded in year 1: ~₹10 lakh

That alone shifts payback from ~5 years to ~3.5 years for taxable entities. LLPs, private limiteds and partnership firms all qualify. Co-ops and Section 8s don't.

What turnkey EPC actually means for industrial sites

• 12-month consumption + 15-min interval load audit
• Structural assessment of the roof (load capacity, age, sheet type)
• DPR with single-line diagram, structural drawings, GA drawings
• DISCOM application + technical feasibility
• CEIG drawings, submission, inspection
• Procurement against ALMM List-I + BIS-certified inverters
• Installation under a Class-A electrical contractor's licence
• Pre-commissioning, CEIG visit, joint commissioning with DISCOM
• SCADA / remote monitoring with per-string visibility
• 30-year support, not 5-year warranty hand-off

Multi-vendor projects fail not at install but at the CEIG-to-commissioning seam. One EPC partner owns that seam.