NEM 3.0 in California: What Does It Mean for New Solar Energy Customers?

Net Energy Metering (NEM) has played a significant role in the rapid growth of solar energy in California. It is a billing system that allows solar energy customers to receive credit for the excess electricity they generate and send back to the grid. Over the years, there have been several updates to the Net Energy Metering policy, and the most recent version, NEM 3.0, has gone into effect in California. In this blog, we will discuss the key changes and implications of NEM 3.0 for new solar energy customers.

Net Energy Metering (NEM) 3.0: Key Changes and Implications

1. Transition to Time-of-Use Rates

One of the major changes in NEM 3.0 is the transition to Time-of-Use (TOU) rates for new solar customers. TOU rates reflect the cost of generating and delivering electricity during different periods of the day, meaning that the value of energy generated by solar panels will depend on the time it is produced. TOU rates are designed to encourage solar customers to shift their energy consumption to periods of lower demand and incentivize the use of energy storage solutions like batteries.

While TOU rates may seem more complex, they provide solar customers with an opportunity to maximize their savings by using energy more efficiently. By pairing solar installations with battery storage, customers can store excess energy during peak solar production hours and use it during periods of high electricity demand, thus maximizing their savings.

2. Grid Access Charge

NEM 3.0 introduces a new Grid Access Charge for new solar customers, which is a fixed monthly fee based on the size of their solar system. This charge is designed to help cover the costs of maintaining and upgrading the grid infrastructure. The Grid Access Charge may increase the payback period for new solar installations; however, it is essential to remember that solar energy customers will still receive significant savings on their electricity bills.

3. Reduction in Export Compensation Rates

Under NEM 3.0, export compensation rates – the rates at which solar customers receive credits for the excess energy they export back to the grid – have been reduced. This change is meant to better reflect the actual value of the excess solar energy generated by customers. Although the reduction in export compensation rates may affect the overall savings of new solar customers, they can still expect significant long-term savings compared to non-solar customers.

4. Grandfathering Provisions

Existing solar customers who are on NEM 2.0 will be grandfathered into their current program for up to 20 years from their initial interconnection date. This means that they will not be subject to the changes brought about by NEM 3.0, allowing them to continue benefiting from the previous program’s terms.


The introduction of Net Energy Metering (NEM) 3.0 in California is a significant development in the state’s solar energy landscape. While the new policy brings some changes that may affect new solar customers’ potential savings, it is important to remember that solar energy remains an attractive investment for homeowners and businesses seeking to reduce their electricity costs and contribute to a cleaner environment.

By understanding the implications of NEM 3.0, new solar customers can make informed decisions about their solar installations, and explore options like battery storage to maximize their savings. As California continues to lead the nation in solar adoption and clean energy initiatives, it is crucial to stay informed about evolving policies and their effects on the renewable energy sector.

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