FAQ'S
Frequently Asked Questions
What is a solar EPC project?
A solar EPC (Engineering, Procurement, and Construction) project is a turnkey solution where a single company is responsible for the complete execution of a solar power plant. This includes system design, engineering calculations, equipment procurement, installation, testing, commissioning, and grid synchronization. EPC execution ensures technical accuracy, regulatory compliance, cost optimization, and long-term system reliability under one accountable entity.
How much roof area is required for a solar installation?
On average, approximately 100 square feet of shadow-free roof area is required for every 1 kW of solar capacity. The exact requirement depends on panel efficiency, tilt angle, mounting structure, and site orientation. Our engineering team conducts a detailed site survey to maximize generation within available space while ensuring safety and structural integrity.
What is a hybrid solar system?
A hybrid solar system combines solar panels, battery storage, and grid power. This configuration allows excess solar energy to be stored in batteries for use during power outages or peak demand periods. Hybrid systems provide higher energy independence, uninterrupted power supply, and optimized electricity usage, making them ideal for residential, commercial, and critical-load applications.
How long does a solar installation take?
Installation timelines vary based on system size and project complexity. Residential rooftop systems typically take 3 to 7 days, while commercial and industrial projects may require 2 to 6 weeks. Ground-mounted solar parks can take several months depending on capacity, approvals, and site conditions. Project schedules are shared clearly before execution.
What is the lifespan of solar panels?
Solar panels are designed for long-term performance and typically last 25 to 30 years. Most Tier-1 manufacturers provide a 25-year performance warranty, ensuring that panels maintain at least 80% of their original output at the end of the warranty period. Proper installation and regular maintenance further extend system life.
Do solar panels work during power cuts?
Standard grid-connected solar systems automatically shut down during power outages to protect utility workers. However, systems integrated with batteries or hybrid inverters continue to supply power during outages. We recommend hybrid solutions for locations requiring backup power and uninterrupted operation.
What maintenance is required for solar systems?
Solar systems require minimal maintenance. Periodic cleaning of panels every 2–3 months ensures optimal energy generation, especially in dusty environments. Annual electrical inspections are recommended to check wiring, earthing, and inverter performance. Preventive maintenance improves efficiency and system lifespan.
Is net metering available for solar installations?
Net metering allows surplus solar energy generated during the day to be exported to the grid, earning credits that offset electricity consumption at night. Availability and regulations depend on state DISCOM policies. Our team assists with net-metering applications, approvals, and compliance processes.
What is a ground-mounted solar power plant?
Ground-mounted solar plants are installed on open land and are commonly used for large commercial or utility-scale projects. These systems allow optimal orientation, higher capacity installations, and easier maintenance. They are ideal for solar parks, captive power generation, and large-scale renewable energy deployment.
Are government subsidies available for solar projects?
Government subsidies are primarily available for residential rooftop solar systems under MNRE guidelines. Commercial and industrial projects usually benefit through accelerated depreciation, tax incentives, and reduced energy costs. Subsidy availability varies based on policy updates and region.
How much can I save on electricity bills with solar?
Solar installations can reduce electricity bills by 70% to 90%, depending on system size, consumption pattern, and tariff structure. Commercial and industrial users benefit significantly due to high daytime energy usage and rising grid tariffs, resulting in faster return on investment.
Does solar power work in cloudy or rainy weather?
Solar panels continue to generate electricity even on cloudy or rainy days, although output is reduced compared to sunny conditions. Modern panels are designed to capture diffused sunlight efficiently. Over a year, generation averages out to meet projected energy estimates.
Which inverter brands are used?
We use Tier-1 inverter manufacturers with proven performance, safety certifications, and strong service support. Inverter selection is based on system size, application type, grid requirements, and client preferences to ensure reliability and efficiency.
Is solar power safe for industrial use?
Yes, solar systems are safe for industrial applications when designed and installed correctly. Proper protection systems such as surge protection, earthing, lightning arrestors, and safety interlocks are incorporated. All installations comply with electrical safety standards and statutory regulations.
What warranties are provided with solar systems?
Solar panels typically carry a 25-year performance warranty and 10–12 years product warranty. Inverters usually come with 5 to 10 years warranty, extendable as per manufacturer options. Mounting structures and workmanship warranties are also provided based on project scope.
Can a solar system be expanded in the future?
Yes, solar systems can be expanded depending on available roof or land space, inverter capacity, and electrical infrastructure. Expansion planning during initial design helps reduce future costs and ensures compatibility with existing systems.
Do you provide real-time solar monitoring?
Yes, real-time monitoring systems are provided that allow users to track energy generation, consumption, and system health through mobile apps or web portals. Monitoring improves transparency, helps identify issues early, and ensures optimal system performance.
What approvals are required for solar installation?
Approvals typically include DISCOM permissions, net-metering agreements, electrical inspector clearance, and safety compliance certifications. Our team manages the complete approval process, ensuring timely coordination with authorities and regulatory bodies.
What is a solar hybrid air conditioner?
A solar hybrid air conditioner operates using both solar energy and grid power. During peak sunlight hours, solar energy reduces grid consumption, lowering electricity costs significantly. These systems are ideal for commercial spaces and homes with high cooling requirements.
Why choose Sunlight Energy for solar projects?
Sunlight Energy focuses on engineering-driven design, strict safety compliance, quality equipment, and long-term performance. Our transparent execution model, experienced technical team, and customer-centric approach ensure reliable solar solutions with measurable financial and environmental benefits.