Like any formatted spreadsheet presentation, this should only be used as a mathematical analysis model, there are assumptions that just don't work when a true timeline is applied. For example, how can a 3.76 year payback period be accurately computed when it takes 5 years to fully apply accellerated deprecation??  But if you crunch the important real world numbers, installing a solar pv sytem is a solid investment for every New Hampshire business.  

 Commercial installations are able to take advantage of two very beneficial advantages unavailable to the residential solar client; a much higher New Hampshire PUC rebate schedule and the ability to claim accellerated depreciation on their tax returns.

 The PUC currently grants a rebate of $0.65 per kilowatt on business installations less than 99 Kilowatts. This is a true gift to New Hampshire businesses that too many owners seem to be unaware of!!  The rebate  is based on AC rather than DC kilowatts so there is a derating factor of about 5 % (depending on the inverter's efficiency). The rebate is not capped and can amount to a much greater figure than is available to the homeowner.

 The spreadsheet below was prepared for a machinery sales and service center just outside of Concord. Note in particular the large deductions for the PUC rebate and the accellerated depreciation. Then note the cash payback period with the the SREC income applied. By applying all the incentives available,the same amount of funding that the business would pay out as utility billing expense would pay for the net asset cost of the solar installation in just 3.76 years!. 

 Not every business has the upfront funding to spend as an initial lump payment so financing is usually a reality and even with interest cost added in and choosing to disregard the SREC income as "found" money, the payback period is less than five years!    The Wunder Capital monthly payment shown on the spreadsheet assumes that the business would be applying the PUC and 30% tax credit refund to reduce the loan principle as it is received.  Note that the payment is still actually less than the average monthly Unitil billing.


 New Hampshire Solar believes that installing a photovoltaic solar system is one of the best investments a business can make!

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April 2017 Small business owners!  The public utility net metering rate in New Hampshire is likely to drop in the very near future from the current dollar for dollar cdediting rate to something like 75 cents on the dollar. This will have a HUGE effect on the long term cost of solar!

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