COMPARE THE EQUIVALENT YEARLY COST OF AN INCANDESCENT BULB WITH THE L.E.D. BULB THAT WILL EMIT 1000-1400 LUMENS BASED ON THE FF PARAMETERS BULB                COST LIFE POWER CONSUMPTION USAGE /DAY   INCANDESCENT P60 1 YEAR 75 WATTS 8  HRS   L.E.D P200 4 YEARS 12.5 WATTS AVE. 8 HRS   USE 365 DAYS PER YEAR AND THE POWER COST IS PHP 13/KW-HRS

Q1. A farmer is planning on installing a 30-kW solar PV system equipped with 10kWh electricity storage (batteries). The cost of installation of the panels with inverter is assumed 1 $/W and the electricity storage costs 750 $/kWh. Given various efficiencies, let us assume that the system with batteries provides a constant 5 kW in average year around (a crude assumption, but OK for our purpose). The batteries need replacement every 5 years and the system has a salvage value of $5,000 at the end of its life (25 years). With this system installed the farmer saves the hydro cost that can be assumed 0.18 $/kWh. Assuming a MARR of 8%, calculate the NPV of this investment using two approaches: a) a simple payback approach, b) discounted cash flow analysis.

You are the design consultant comparing two pump options. The first option has an installation cost of $34,000 and lasts 40 yearswith $1,000 maintenance every 10 years. The second option has an installation cost of $30,000 and lasts 40 years if a largerefurbishment of $15,000 is conducted after 20 years. Assuming a 4% MARR,  Pv option 1 pv option 2  which option is the best

Econo-Cool air conditioners cost $380 to purchase, result in electricity bills of $166 per year, and last for 5 years. Luxury Air models cost $580, result in electricity bills of $132 per year, and last for 8 years. The discount rate is 20%. a. What is the equivalent annual cost of the Econo-Cool model? Note: Do not round intermediate calculations. Round your answer to 2 decimal places.