Solar Photovoltiac

KAB_2

Guys can anyone recommend a website or web calculator to see what I could actually generate and save (or sell) with a PV array.  I'm getting a quote on a system and want to educate myself.  Sorry I know this is a heating site, but if I can generate enough I'll get a Fulton Electric Boiler.  Thanks.

Mark Eatherton

Hate to burst your bubble, but....

Solar PV efficiency is around 15% at peak conditions. Solar Thermal is around 60% efficient. Unless you have a LOT of money, and a LOT of space to put collectors in, you're probably not going to be able to afford an electric boiler and a PV system.



There are some smaller systems that are utilizing state of the art air source heat pumps with PV's, but still extremely limited in capacity. And then there is the inverter, and battery $torage $y$tems necessary to complete the system...



ME

KAB_2

Thanks

Thanks Mark, more I look into it the more I agree with you. Thanks KAB

Kevin_in_Denver_2

PV vs Thermal

I would say that for a new, sub 2000 sq.ft., energy efficient house, grid-tied PV is preferable to solar thermal. The pendulum has only recently swung that way because of PV price reductions, and new heat pumps for heating and domestic hot water.



A resistance boiler for space heating would be a bad choice in any case.

Is_solar

PV calculator

http://rredc.nrel.gov/solar/calculators/pvwatts/version1/

Larry Weingarten

I'll add...

... that there is a huge amount of info on all things solar at https://homepower.com/ .



Yours,  Larry

hot_rod

consider

that a pv array generates power that can be used all year, maybe not so with a thermal array. I'm hearing prices about 1 buck a watt for PV, if you can install them yourself a pv array could be a better choice.