My wife and I are about to install a solar energy system on our roof.
Massachusetts has a "Solar Renewable Energy Credit" (SREC) program. For those who aren't familiar with this, the state requires the electric utilities to generate a certain percentage of their capacity from renewable energy. If they don't, they have to buy SRECs to make up the difference. They can buy them directly from the state at a premium, or buy them at a slight discount at auction from other people who are generating renewable energy, like my wife and me. In short, we'll make a few thousand dollars per year from the SREC program in addition to the savings on our electric bill.
The question at hand is, are SREC payments taxable?
No one seems to know for certain. Neither the IRS nor the Massachusetts DOR has issued a definitive ruling. Everyone says "consult your tax professional," but they don't know either. However, the conventional wisdom is that if you install your solar energy system to make money (which we are), and you use the SRECs to offset the initial cost of the system, then you don't have to pay taxes on them until represent a *profit*, i.e., until you've recouped your initial investment.
However, it seems to me that if you are going to treat the solar system as a profit-producing activity for the purpose of deciding whether the SRECs are taxable, then you also need to treat it tat way in other ways, most notably by depreciating its cost over time, in which case any portion of the SREC income that exceeds the value of the system allocated to that time period would be taxable. You would also need to report both the depreciation and the SREC income on your tax return.
Most of the people saying they don't have to pay taxes on SRECs until they've repaid their system do not seem to be planning to either depreciate the system or report the SRECs, so I think they're just looking for an excuse not to pay taxes on the SRECs without wanting to do the work to make that legitimate.
Another interesting question that comes out of this discussion is this... If the solar system is a profit-producing activity, and the SRECs represent taxable revenue for that activity, then it seems to me that you also have to treat the revenue from the electricity you produce as taxable revenue as well. The response of, "No, I don't, because my house uses more electricity than my solar system produces," doesn't hold water, because the day-to-day electricity used by your house isn't part of the profit-producing activity, so your solar system is essentially selling electricity to your house.
If I'm right that the generated electricity needs to be treated as taxable revenue just like the SRECs, then this argument that the SRECs aren't taxable until the system is paid for is very dangerous, because the majority of the revenue from the system is going to come from the electricity, not the SRECs.
Therefore, it appears to me that the best course of action, if you're looking for the best possible ROI on your solar investment, is to treat the solar system as a capital improvement, not a profit-making activity. If you do that, then yes, you have to pay taxes on the SRECs, but you *don't* have to pay taxes on the generated electricity, since it's just reducing your electric bill, not making you any money, and in the end, you come out ahead.
I'd love to hear other people's thoughts about this.