I'm buying a KB Home Palo Alto Plan 3 and was wondering if I needed to upgrade the solar power package to a higher level to really save on electricity cost. I previously lived in a comparable 3,400 sf home and usually had monthly electric bills around $250/month and about $350/month during the hot summer months. Does anyone know or have experience with KB's included solar package and how much the standard solar package would save me in monthly electric bills? Thanks everyone!