SOLAR WATER PUMPING COSTS


INITIAL EXPENSE:

         PUMP AND CONTROLLER

         SOLAR PV ARRAY

         PLUMBING AND ELECTRICAL SUPPLY


OPERATION EXPENSE:

         ZERO EXPENSES IN OPERATION



MAINTENANCE EXPENSE:


         PUMP REPLACEMENT EVERY 5-10

         YEARS               

                        

FUEL POWERED WATER PUMPING


INITIAL EXPENSE:

       GENERATOR AND PUMP

       PLUMBING AND ELECTRICAL SUPPLY



OPERATION EXPENSE:

         RECURRING EXPENSES IN FUEL,

         OIL, PARTS, AND LABOR


​MAINTENANCE EXPENSE:


         PUMP AND GENERATOR                        REPLACEMENT EVERY 3-10                    YEARS

COST COMPARISON

(SEE ABOVE GRAPH)


RED LINE- ACCUMULATED EXPENSES WITH DIESEL PUMPING

BLUE LINE - ACCUMULATED EXPENSE WITH LORENTZ SOLAR WATER PUMPS


EXPENSES FOR 

DIESEL PUMP


MAINTENANCE


PARTS


FUEL DELIVERY


TOTAL

EXAMPLE 1: WATER PUMPING FOR IRRIGATION

75 METER PRESSURE HEAD

50,000 LITERS PER DAY

PUMP SITE: QUITO, PICHINCHA PROVINCE

COST COMPARISON
(SEE ABOVE GRAPH)

RED LINE- ACCUMULATED EXPENSES WITH DIESEL PUMPING



BLUE LINE - ACCUMULATED EXPENSE WITH LORENTZ SOLAR WATER PUMPS

​EXPENSES FOR

SOLAR PUMPING

INITIAL


OPERATION


MAINTENANCE​

​TOTAL

SOLAR PUMPING COST COMPARISON WITH OTHER ALTERNATIVES

EXAMPLE 2: WATER PUMPING FOR SHRIMP FARMING 

​25 METER PRESSURE HEAD

​700,000 LITERS PER DAY

PUMPING SITE: MACHALA, EL ORO PROVINCE

   YEAR 1    YEAR 2     YEAR 3     YEAR 5    YEAR 10



​   14,255     14,255      14,255     14,255      14,255


      0             0            0            0              0


      0             0            0            0           7,926


   14,255     14,255      14,255     14,255      22,181

SOLAR WATER PUMPING IS COST COMPETITIVE WITH FOSSIL FUEL POWERED WATER PUMPING AND APPLICATIONS WITH INTENSIVE WATER PUMPING POWERED BY THE PUBLIC ELECTRICAL GRID. SOLAR PUMPING IS MUCH MORE ECONOMICAL IN THE LONG RUN DUE TO THE ZERO COST OF MAINTENANCE AND OPERATION. 


LET'S COMPARE SOLAR PUMPING WITH FOSSIL FUEL POWERED PUMPING.

  YEAR 1     YEAR 2     YEAR 3     YEAR 5    YEAR 10


   33,919        0            0             0              0


      0            0            0             0             574


      0            0            0             0          15,278


   33,919     33,919      33,919     33,919      49,771

EXPENSES FOR DIESEL PUMP

​​MAINTENANCE


FUEL


PARTS


FUEL DELIVERY


​TOTAL

​   YEAR 1    YEAR 2     YEAR 3     YEAR 5    YEAR 10


   1000        1000        1000       1000         3000


     0             0           3000       2000         9000


   12,000     13,000      15,000     19,000     139,000


   12,000     26,000      44,000     82,000     233,000

EXPENSES FOR SOLAR PUMPING


INITIAL


OPERATION 


MAINTENANCE


TOTAL

  YEAR 1     YEAR 2     YEAR 3     YEAR 5   YEAR 10



​   500         510          520         541         2,873


  1095        1259        1448       1915        14,850


     0            0           3121       1624        8,620


  2600        2652        2705       2814        14,939


  4,195        8,616      16,410     28,259       69,541