Expand any existing NEM system
Using Enphase technology, you can add more solar for California homeowners
while preserving their NEM 1.0 or NEM 2.0 status.
More capacity. More capabilities.
Add an IQ Battery 10C
A simple way to maximize bill offset for homeowners with high nighttime energy needs, and even add backup for more resilience and energy independence.
Add an IQ EV Charger
Save money by charging EVs with excess solar energy, and use the additional production of an expansion system to generate the extra energy needed.
How it works
Identify homeowners who produce less than they consume
Determine expansion size based on existing production shortfall
Design and install an expansion system to meet their needs
Available configurations
Design consideration
The existing and expansion systems operate independently of each other
Only the existing system can export to the grid for NEM 1.0/2.0 credits
100% of the energy produced by the existing system can be exported at the NEM 1.0/2.0 rate
Added batteries can only be charged by the expansion system
The existing system may only have batteries attached in limited situations; see configuration diagrams for details
Use Solargraf to easily size and design the expansion system, determine if batteries would be useful, and generate a proposal showing potential savings
Get started
We have options for every solar system, from monitoring to complete systems upgrades.
Application filing handbook
Step-by-step instructions for submitting expansion system applications to California utilities.
NEM 1.0/2.0 expansion video
Get a quick introduction and overview of NEM expansion systems from the Enphase Training Team.
4th Gen NEM-MT diagrams
Sample line diagrams covering the 4th Generation NEM-MT offering.
Solargraf expansion video
See a short orientation video to learn more about using Solargraf to design your expansion systems.
Solargraf expansion instructions
Full details on using Solargraf to design expansion systems and generate proposals.
NEM 1.0/2.0 expansions certificate of compliance
Get the NRTL UL 3141 Certificate of Compliance document for use in AHJ applications.
