Everything Solar Forum

Interested in anyone's thoughts on this:  a potential client is planning to have a heat pump installed for both heating and cooling, and discontinuing his gas services (yay!).  He's wanting me to factor in how this will affect the needed size of his solar power system (he wants to cover as close to 100% of his usage as possible) and what his estimated savings/costs would be given this switch to a heat pump.  Any suggestions on how to go about predicting energy usage and cost with the heat pump?  

That's a great question! @Richard Strömberg may be able to answer this!

Interested in anyone's thoughts on this:  a potential client is planning to have a heat pump installed for both heating and cooling, and discontinuing his gas services (yay!).  He's wanting me to factor in how this will affect the needed size of his solar power system (he wants to cover as close to 100% of his usage as possible) and what his estimated savings/costs would be given this switch to a heat pump.  Any suggestions on how to go about predicting energy usage and cost with the heat pump?  

I recommend looking at the CCF monthly totals on their gas bill, converting to mmBTUs and then to watt-hours. Assume that the efficiency of the heat pump will be 2 to 2.5 more efficient than the NG heating system. An easy way would be CCF>>Btus>>kWh *50%.

1 CCF of nat gas has 103,800 Btus.
Divide Btus by 3412 to get kWh. So for each CCF of NG, the energy equivalent is 30.422 kWh. Divide that by 2 to get your electrical energy estimate for a heat pump.

-Rich

That's a great question! @Richard Strömberg may be able to answer this!

Interested in anyone's thoughts on this:  a potential client is planning to have a heat pump installed for both heating and cooling, and discontinuing his gas services (yay!).  He's wanting me to factor in how this will affect the needed size of his solar power system (he wants to cover as close to 100% of his usage as possible) and what his estimated savings/costs would be given this switch to a heat pump.  Any suggestions on how to go about predicting energy usage and cost with the heat pump?  

That's a great question! @Richard Strömberg may be able to answer this!

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Ella Nielsen
Membership & Engagement Director
American Solar Energy Society
Boulder CO

Original Message:
Sent: 08-26-2024 08:48 AM
From: Adam Rossi
Subject: How planning for a heat pump affects solar power system design

Interested in anyone's thoughts on this:  a potential client is planning to have a heat pump installed for both heating and cooling, and discontinuing his gas services (yay!).  He's wanting me to factor in how this will affect the needed size of his solar power system (he wants to cover as close to 100% of his usage as possible) and what his estimated savings/costs would be given this switch to a heat pump.  Any suggestions on how to go about predicting energy usage and cost with the heat pump?  

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Adam Rossi
Sustainability coordinator
Jerusalem Farm
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Interested in anyone's thoughts on this:  a potential client is planning to have a heat pump installed for both heating and cooling, and discontinuing his gas services (yay!).  He's wanting me to factor in how this will affect the needed size of his solar power system (he wants to cover as close to 100% of his usage as possible) and what his estimated savings/costs would be given this switch to a heat pump.  Any suggestions on how to go about predicting energy usage and cost with the heat pump?  

Adam -

Several years ago, Dave Hrivnak, who posts here from time to time, pulled together several ASES members to write a book called "Driving to Net 0."  I wrote Chapter 1, which addresses some of your question and is visible in its entirety by clicking the "Read sample" link on Amazon's site:

https://www.amazon.com/Driving-Net-Stories-Carbon-Future/dp/0692143831/

Please feel free to contact me directly at dave (dot) erb (dot) avl (at) gmail (dot) com if you'd like to discuss this in more depth.  Best,

Interested in anyone's thoughts on this:  a potential client is planning to have a heat pump installed for both heating and cooling, and discontinuing his gas services (yay!).  He's wanting me to factor in how this will affect the needed size of his solar power system (he wants to cover as close to 100% of his usage as possible) and what his estimated savings/costs would be given this switch to a heat pump.  Any suggestions on how to go about predicting energy usage and cost with the heat pump?  

Interested in anyone's thoughts on this:  a potential client is planning to have a heat pump installed for both heating and cooling, and discontinuing his gas services (yay!).  He's wanting me to factor in how this will affect the needed size of his solar power system (he wants to cover as close to 100% of his usage as possible) and what his estimated savings/costs would be given this switch to a heat pump.  Any suggestions on how to go about predicting energy usage and cost with the heat pump?  

Interested in anyone's thoughts on this:  a potential client is planning to have a heat pump installed for both heating and cooling, and discontinuing his gas services (yay!).  He's wanting me to factor in how this will affect the needed size of his solar power system (he wants to cover as close to 100% of his usage as possible) and what his estimated savings/costs would be given this switch to a heat pump.  Any suggestions on how to go about predicting energy usage and cost with the heat pump?