Knowledge Centre
Case studies & savings
Enerzia Solar case studies — coming soon
We only publish verified projects. Each case study will show:
Solar policies & subsidies
Short summaries to help you plan. Rules and amounts change — always confirm the latest details on the official sites linked below.
Residential · Central scheme
PM Surya Ghar Muft Bijli Yojana
The Government of India's rooftop solar scheme for households. Eligible homes installing grid-connected rooftop solar can receive central financial assistance — around ₹30,000 for 1 kW, ₹60,000 for 2 kW and ₹78,000 for 3 kW and above. Applications are made on the national portal and processed with your DISCOM.
TNPDCL (formerly TANGEDCO) · TNGECL · TNERC
Tamil Nadu — Rooftop & Open-Access Solar
Rooftop solar connections, net metering and net feed-in are handled by the distribution utility under TNERC's grid-interactive solar regulations. Commercial and industrial consumers can source solar through green energy open access under TNERC's Green Energy Open Access Regulations, 2025.
BESCOM · KERC
Karnataka — Rooftop & Open-Access Solar
In Bengaluru, rooftop solar applications and net metering are handled by BESCOM under KERC regulations. Commercial and industrial consumers can explore captive and green energy open access arrangements as permitted by KERC.
FAQs
Payback depends on your tariff, daytime usage, system size and any subsidy. We share a site-specific payback estimate in your proposal after the assessment.
Yes, when engineered correctly. A PV-DG fuel-saver controller limits solar output so the generator never sees reverse power flow, protecting its alternator.
Timelines vary by DISCOM and application workload. We prepare the documentation and follow up with the utility until the bi-directional meter is installed.
Battery life depends on chemistry, depth of discharge, temperature and daily cycling. LFP batteries are chosen for long cycle life; manufacturer warranty terms are shared with your proposal.
As a rule of thumb, about 80–100 sq ft of shadow-free roof per 1 kW. Our site assessment confirms the exact figure for your roof.
Eligible residential on-grid systems may qualify for central subsidy schemes. Eligibility is set by the government and your DISCOM — we support the documentation where applicable.
A bi-directional meter records power you export to and import from the grid, so you are billed on the net units. We coordinate with the utility for approval and installation.
Not always. Batteries help with backup and evening use; sizing depends on the load, required backup duration and your operating pattern.
Your site location and a recent electricity bill. For commercial and industrial sites, operating hours and connected load help us prepare.
We have regional teams for Tamil Nadu and Karnataka, backed by Enerzia Group's execution network across 14+ Indian states.
Insights
We'll review your requirements and help you determine what solar or battery storage can do for your property.
