Want to Add Solar Panels to Your New Home? Five Considerations
Editor’s Note: Solar tax credits begin to sunset at the end of 2019. To take advantage of the full 30% credit deducted from your tax owed, get your system by December 31, 2019.
Before adding solar to your recently purchased home, here are five considerations:
1. The condition of your roof
Since new homebuyers have recently had their roof inspected, they have an objective evaluation regarding the condition and remaining life of their roof. In simple terms, if your roof has less than 10 years of remaining/warrantied life, you do not want to install solar (on such roof planes); if your roof has 10+ years, you’re in good shape.
2. Historical/future electricity use
Since new homeowners have limited (or zero) electricity use data, we recommend one of four approaches (to forecast future use and accurately size and model their prospective solar system):
- Live in your home for 12 months and, thereby, quantify how much electricity you will use.
- Wait until you have occupied your home for six months — particularly 1-2 months of summer use, when electricity demand peaks. (Thereby, we can model 12 months of electricity demand based on your use pattern and comparable homes).
- Employ comparable homes’ electricity use (based on their vintage, neighborhood, size, occupancy, etcetera) to model your home’s future electricity use. Fortunately, we have several hundred data sets — electricity use patterns for homes in all neighborhoods in our community — to approximate future use.
- If it’s not too late, request 12 months of PG&E data from the home seller. Oftentimes, this is a futile effort, but it’s worth trying.
3. Home improvements
Stating the obvious: Many new homeowners improve their homes. Adding a pool and/or hot tub will increase your electricity use, as would replacing your furnace with an electric heat pump (an increasingly common practice for homeowners). Conversely, replacing windows, adding insulation, or installing a variable speed pool pump reduces your electricity use. In all cases, we model the impact vis-a-vis solar system sizing.
4. Electric vehicle
If you own — or intend to purchase, in the next 12-24 months — an EV, you’d want to factor future charging of your car into the sizing of your solar system. We find that EVs travel 4 miles per kWh of electricity. The math is simple: Take the number of miles/year you anticipate driving and multiply it by the percentage of charging you believe will be done at home (versus your workplace, public chargers, etc.). Then, divide the number by 4 to quantify additional electricity use (in kWh). For example, if you intend to drive 10,000 miles per year and charge your car 80% of the time at home (fueling 8,000 miles), you will consume 2,000 kWh of electricity.
5. Your electrical panel
Though adding solar does not increase your electrical demand, we need to ensure your electrical panel has sufficient capacity (or space) to accommodate the solar inverter. Furthermore, we will evaluate non-solar changes to your electrical demand — car charger, spa, swimming pool, heat pump — to determine your panel’s amenability. (We perform load calculations and review your future electricity use with the city or county to ensure solar will work.)
Net-net, going solar is simple, but there are a few nuances worthy of consideration … particularly if you recently purchased a home.
Crossposted from RepowerYolo website
Read more about the solar tax credit
For more information from Cool Davis
Incentives page https://www.cooldavis.org/resources/incentives-and-rebates/
Blog post: “Solar water heating systems: Cost effective and carbon reducing” https://www.cooldavis.org/2018/11/16/solar-water-heating-systems-cost-effective-and-carbon-reducing/
Rooftop Solar web page (tinyurl.com/gosolardavis).
Blog post: “Rooftop Solar: Partial Fixes for Partial Shade” https://www.cooldavis.org/2018/05/17/rooftop-solar-partial-fixes-for-partial-shade/
Renewable Energy Federal Tax Credit – Solar and Solar Hot Water
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Cool Davis is a coalition of citizens, the City of Davis, and community organizations working to empower our community to reduce greenhouse gas emissions.
oh, yea! every day! 💪
How did you celebrate #EarthDay2021? VCE is happy to celebrate earth day every day by providing cleaner, less polluting electricity to our community at no extra cost. 💚
Okay, one more. Remember 2019? Hundreds of thousands took to the streets. The time is now to make a change -- everyone, everywhere, everyway.
Protesting Climate Change, Young People Take to Streets in a Global Strike (Published 2019)
Anxious about the future and angry about the failure to curb the crisis, millions joined an urgent call for action against climate change.
Last post today folks, don't miss D-CAAP Workshop tonight, Hugh Safford next week, and other important events. Today felt good for the first time in a long time. https://www.cooldavis.org/civicrm?civiwp=CiviCRM&q=civicrm%2Fmailing%2Fview&id=1038 @CityofDavis @GreenerDavis
Happy Earth Day, folks! Today is the first day of Big Day of Giving. Be an early bird! Give now and help us make the most of our $15K matching fund! Your donations will be held and posted to the Big Day of Giving website (GivingEdge) on May 6. https://www.cooldavis.org/2021/04/07/big-dog-lands-regionwide-may-6-donate-starting-april-22/
No better tribute to our Earth than community created art. Thank you @AnyaMcCann, Danielle Fodor, Lupita Torres, Alyx Land, and many others who envisioned and conjured these expressions of love and stewardship!