There is plenty of sunlight to support solar energy. In fact, cooler Northeast temperatures make solar electric cells work more efficiently. Much more important than sunlight intensity are programs to make solar cost effective, which is why cool and cloudy Germany is actually the global leader in solar generated electricity.
Here are the production figures for a year for an 8.2 KW system, half of which is facing south and half facing west. It produced 11,019 kWh in one year of operation.