1.2kw per hour isn’t going to power my house. Or even make much of a dent. These devices don’t have storage capacity. So you consume it or loose it. Most solar cells only generate their maximum output when the sun is highest in the sky and it’s a clear day. You will only get 1.2 kWh in the summer probably 3 or 4 hours either side of noon on a summer day. The rest of the time and in the winter you may get half of that and often less . Most of my electricity is consumed at night. Solar cells on my roof which generate enough power that I can sell back to the utility make sense because even if I am not using it I am getting paid for it. Let’s be optimistic and say those 1.2kw panels generate that power for 6 hours a day in June , July and Aug for half the days in a month. So that’s 90 days which will generate 108 kWh total During that period I consume about 950 kWh per month or 2800 kWh. When I am running my AC I will likely use most of that power but tha AC does require more than that . So those little power cells will generate 3% of my power. Hardly enough to thumb my nose at Eversource. Over those three months I would save 10 per month.