Without knowing the specifics, I'd bet you would save nothing. If I understand the deal correctly - you have to lease their equipment, on contract for several years. The only thing you get in return is that your currect rate does not go up in that time? If your rates just jumped, chances are they won't go up much, if at all for a while, so you'd basically be throwing money at them for no real benefit of your own.
There are retailers that people can sign up with here locally that basically lock in a rate for electricity/gas etc. The rate you sign up for will typically be more than the current rate, but the gamble is that if the rates do go up, that you could be lower. If you read their fine print, they CAN increase their "locked in" rate on you if the electricity rates get to a certain point (where they lose money). In short, you will always lose - because they have to make money to stay in business. it's a legal scam, permitted by the government in order to make the people happy that whine about utilities having a monopoly. These retailers often pretend they work for the utility and prey on the elderly getting them to sign contracts where they will save money. We get calls all the time (ya, the government still makes the bills go through the local utility) right after these people sign up wondering why their bill is now double what it was last month.
Back on solar, I realize you are leasing, but payback on these systems is usually at LEAST 25yrs, and the equipment will NEVER last that long without expensive maintenance that kills any savings you may have had.
Click here for a quick calculation I posted before regarding this. I understand you don't pay for the system or maintenance, but read the fine print - I would be willing to bet if the rates increase past a specific threshold, that they CAN raise the rates on you even thought they advertise it as a lock in rate. They won't lose money.... and typically means that in turn... you can't make/save money.
A few people have installed photovoltaic systems with the local utility I work at, and while some realize this, others have unrealistic expectations. Those that are simply doing it to help the environment (and have more money than brains) are the only ones who seem to have a realistic expectation of what to expect. Unfortunately some think they will be making piles of money while they send back to the grid, but it's unrealistic. Most of these systems are very small, and to feed back into the grid, the system must be feeding your entire house (or at least what it's wired into) and have excess power on top of that. In most cases, feeding back into the grid will never happen.
Do you have details of what the least will cost you per month? How long do you have to sign up for?
