pv energy systems
Anybody knows the price for a solar – PV and Thermal – system and the price of a micro wind power system?
I’m doing a research regarding the installation of a fuel cell inside a house and I want to compare the price of this system with a PV and thermal solar system and also the price of a micro wind power to use in residential buildings. Prices would be suitable in installed KW or KWh of energy…source? Thanks
What should be a relatively straightforward answer, like it will cost you $14/watt for solar and $7/watt for wind power is not so easy in reality. There are “two” big challenges to understanding your PV and wind power system costs and power?
#1. POWER IS HARD TO FIGURE OUT. You buy these systems based on their “nameplate” value, but you actually care about their total power generation:
To explain: Each of these systems, Solar or Wind, will be “rated” by their power production peak capability. This “rating” is known as their nameplate value, and when purchasing a “90 watt” solar panel, and the 90 watts is the peak power this panel can produce on a sunny day at noon. Similarly, a 1kW (nameplate) wind turbine will be “rated” for the peak power it can generate in fairly high wind (typically 30 mph sustained).
If you are actually using these systems for power generation, the nameplate value is good to know for the total power you will need to handle in the system, but not wholly useful for determining it’s power production. What you actually care about is watts/per year, not watts per BEST CASE SCENARIO.
To determine your yearly estimated watts per solar or wind is quite hard and depends on your sun and wind conditions where you live and how you install these. In general, a solar system with nameplate power of 3 kW will produce approximately 4000 kW/hrs per year in “good” sun (southern U.S.), and a 3kW wind turbine will produce approximately 6000 kW/hrs in “good” wind (Wind class 3 areas.) A wind class map can be found at AWEA.org.
#2. PRICE IS HARD TO FIGURE OUT. Even if you do some math, and figure out your power production for your system, there is not an easy “price” total for either of these. Solar panels need installation, DC-AC inverters, grid-connection systems and/or battery systems. Wind systems also need installation, including potentially costly foundation and tower work if you want to get the turbine up into stronger winds, inverters, grid-connection and batteries etc. It is not atypical in EITHER solar or wind for the installed costs to double or triple the purchase of the panels or turbines themselves.
What you wanted to know was which to buy, the answer is: if it’s really sunny and not windy, use solar, if it’s windy (branches offer flutter on your trees), think about wind.
later,
jeremy
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