Differences

This shows you the differences between two versions of the page.

--- products:energy:solar:offgrid_design [2024/06/26 14:30] – created wikiadmin
+++ products:energy:solar:offgrid_design [2024/06/26 14:39] (current) – wikiadmin
@@ Line 28: / Line 28: @@
 Electrical components like wires, breakers and other items are separate. Shall be estimated after a measurement and after the design map is made.
+If we have a final of about 100 per watt for the 1 MW system then the system shall generate 5 MWH per day.
+KWH at Rs 50 x 5000 ( for 5 MWH ) = Rs. 250,000 per day saving.
+If Rs 100M are paid and 0.25 M per day are saved then the ROI is 100M/0.25M = 400 days.
+This is very good.
+If the system is used for 400 days in the day time then the return on estimate is complete.
+Life of solar modules is about 30 years or more.
+Life of inverters is about 10 to 13 years before maintenance. Maintenance cost is about max 10% of cost.
+So over 30 years the inverters shall cost about 1.3x their initial cost. Not much in maintenance.
+Make sure inverters are running at max 70 percent capacity for a life of over 10 years without maintenance.
+Running an inverter at near 100% capacity in hot climates can cause it to require repairs within 3 years.
+Most expensive maintenance cost is cleaning of solar module.
+We shall design them to be about 1 meter above the roof so the frame cost is low AND they are easy to clean.
+There shall be space between the modules to allow wind movement and further reduce the frame costs while increasing the wind resistance by allowing a passage for it to pass between the adjacent modules.