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Home and Business Solar Incentives Need Parity

    After doing some further digging this evening, I decided that the business solar incentives in Oregon are absolutely astounding. With some help from the Office of Sustainable Development in Portland, I’m able to provide you with some real life examples of how state and government incentives can be combined to create very affordable installation options for business owners. On the home front this is a much different story. Check out the following examples of how incentives work for both groups.
    .
    Please note that the following treatment of the tax incentives does not by any means constitute tax advice and cannot be used to avoid IRS penalties (Not like you’d actually be dumb enough to cite solarpowerrocks.com on your IRS grievance letter right? The last thing we need is something like that). Ok, here we go. Lets start with businesses. Consider a 17 kw commercial solar electric system:
    .
    17 kw Commercial Solar Electric System
    $153,000
    Total estimated installed cost
    (actual cost will vary)
    – $21,250
    Energy Trust incentive
    ($1.25/watt x 17,000 watts; add $0.25 for PGE customers)
    – $76,500
    Oregon Business Energy Tax Credit
    (up to 50 percent of installed cost)
    -$55,900
    Approximate net present value (up to 30 percent) of federal tax credit (and accelerated depreciation)
    Just about nothing!Approximate final net cost
    to business

    Ok, so as a business owner, if having incentives account for just about your entire PV system cost doesn’t sound good to you, perhaps you shouldn’t be in business in the first place. Demand for systems should be HUGE!! Let’s take a look at a commercial example for heating water with solar in Oregon:

    .

    Typical Commercial Solar Water Heating System
    $30,000
    Total estimated installed cost
    – $6,000
    Energy Trust incentive
    ($6.00/therm x 1,000 therms)
    – $8,000
    Oregon Business Energy Tax Credit
    (based on $16,000 eligible cost * 50%; limited by 15 year payback requirement)
    -$13,000
    Approximate net present value (up to 30 percent) of federal tax credit (and accelerated depreciation)
    $ 3,000
    Approximate final net cost to business

    .

    Again, this is awesome. By utilizing a mix of federal and state incentives, a business owner may only be responsible to finance 10% of the total installed cost of a solar hot water system. Wow. Let’s turn the focus to the home. While many consider a solar system a long-term investment in your home (the value continues to grow as energy costs rise) those business credits dwarf what is available to homeowners. Cash incentives from Energy Trust of Oregon and tax credits from the State of Oregon and the federal government only seem to cover half as much for homeowners as they cover for business-owners:

    .
    2 kW PV system for residential PGE customers
    $20,000Total installed cost (see note)
    -$4,500Energy Trust incentive ($2.25 / watt x 2,000 watts)
    $15,500Amount paid by customer to contractor
    – $6,000Oregon tax credit ($3.00 watt x 2,000 watts, $6,000 cap)
    -$2,000Federal tax credit (30% of $15,500, $2,000 cap)
    $7,500Final net cost to customer

    .

    Now, we turn to the residential solar water heating example. First some background information. Heating water accounts for about 15 percent of the average household’s energy use — second only to heating and cooling your home. You can expect a solar water heating system to heat about half of the total hot water your family will need in an entire year. According to the Office of Sustainable Development, from May through October (In Oregon) these systems frequently provide enough energy to heat 90 percent of your home’s hot water. Again though, it seems a little unfair that if you’re a business you can recoup up to 90% of the total cost of your system and if you’re a homeowner you’re lucky to recoup 50%. Hell though, it’s great that in Oregon you are able to recoup anything (imagine if you lived in Alabama or something. Actually, I haven’t reviewed Alabama’s solar incentives yet so I should probably shut my mouth):

    .

    Drainback system that saves 2,200 kwh/yr
    $8,000Total installed cost (see note)
    -$880
    Energy Trust incentive ($.40/kWh x 2,200 kWh)
    $7,120
    Amount paid by customer to contractor
    – $1,320
    Oregon tax credit ($.60/kWh x 2,200 watts, $1,500 cap)
    -$2,000
    Federal tax credit (30% of $7,120, $2,000 cap)
    $3,800
    Final net cost to customer

    .

    From here, we just need to do a little more simple math to calculate payback for homeowners. Since the price of energy hasn’t done anything but rise at a rate of about 7%, let’s say over 15 years the average price of electricity from the utility will be $.13/KwH – So annual savings is about $290 (2200KwH * $.13). Now, under current residential incentives, this system pays itself off in about 13 years. That’s a long time for a homeowner to recoup the investment compared to a business owner.

    The blame for this disparity should not lay with the Oregon state legislature. Instead, the cause of this large gap between business solar credits and homeowner solar credits lies with the federal government. Why? The ability to rapidly depreciate this solar equipment on your taxes. You can’t do this as a homeowner but you can as a business. That benefit alone accounts for a significant amount of the net cost to businesses (Look above at the percentage that accounts for!).

    .
    So if you’re a homeowner and you want to finance your solar equipment, until some progressive energy legislation passes through Washington DC, you either need to refinance your mortgage with an energy efficient loan, or you could start a home based business and use the rapid depreciation schedule.

Last modified: March 12, 2014

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Dan HahnEarlyKlamathMan Recent comment authors
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Dan Hahn
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Dan Hahn

Hey there Early Klamath,

This depends on what type of panel we’re talking about. All solar panels have a tendency to degrade over time (that’s why your warranty will reflect this). Crystalline solar panels typically last between 20 and 25 years, while thin film panels usually last between 8-10 years. This is one of the reasons the government allows rapid depreciation on the equipment. Thanks for your question and your compliment!

EarlyKlamathMan
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EarlyKlamathMan

Typically, how long do solar panels last?
Thanks for the great website.

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