The average residential household in the southwest installs a 5 kWh system and during Q1 2015, it cost about $3.40 per DC watt or $17,000 (5000 times $3.40) before incentives. Utilities on the other hand typically install systems in the 100 mega-watt or greater range.
Change in the Nipples. One of the first signs to look for is a change in the size or appearance of the catâs nipples. Particularly look for the color of the nipples. If they appear to be more pink than normal, that is a sign that the cat is pregnant.
This stage is the big time! Now your pregnant cat will start to have major contractions. She will be breathing deeply and you will see visible movement and shuddering of her belly. In the beginning, the contractions for cats giving birth to kittens may be once every 30 minutes and possibly longer. They gradually become more frequent and occur every 30 seconds until right before the birth of the first kitten.