California is learning to trust 100% residential solar power
Pacific Gas & Electric Company (PG&E) wanted to first better understand if and how smart solar inverters could address power quality problems as solar penetration levels on homes approach 100%, and then to understand the financial effects. The broad conclusion was that when penetration levels hit 100%, smart inverters – via management of Volt-VAR and Volt-Watt functions – could mostly keep the grid from experiencing significant voltage violations or thermal issues. They also found a very limited economic impact over 10 years, either positive or negative, when compared to traditional upgrades with a total net present value of -$4 per customer (net cost) to$57 per customer (net benefit) over 10 years.
Pacific Gas & Electric Company (PG&E) wanted to first better understand if and how smart solar inverters could address power quality problems as solar penetration levels on homes approach 100%, and then to understand the financial effects. The broad conclusion was that when penetration levels hit 100%, smart inverters – via management of Volt-VAR and Volt-Watt functions – could mostly keep the grid from experiencing significant voltage violations or thermal issues. They also found a very limited economic impact over 10 years, either positive or negative, when compared to traditional upgrades with a total net present value of -$4 per customer (net cost) to$57 per customer (net benefit) over 10 years.