Parnian engineers answer the most common customer questions about cost, payback and choosing equipment.
How much can a solar plant reduce my electricity bill?
A grid-tied (on-grid) plant covers most daytime consumption and exports surplus power under the guaranteed purchase tariff; an off-grid system stores energy in batteries for use at night.
How long is the solar payback period in Iran?
Depending on capacity, provincial irradiance and the purchase tariff, payback is usually 3–5 years. Use the Parnian solar calculator to see best- and worst-case income scenarios.
How do I start buying solar panels?
First size your system with the calculator, then compare and request quotes for panels, inverters and mounting in the Parnian store. For larger plants, talk to our sales team.
Which is better — on-grid or off-grid?
On-grid suits homes with grid access and needs no batteries. Off-grid is the choice for remote areas, water pumps and battery-backed systems.