Net energy metering concerns utility compensation for electricity exported from a customer’s solar system to the grid. Eligibility and credit terms depend on the service area and utility; the arrangement is not a promise of a zero bill.
The U.S. Department of Energy’s homeowner solar guide recommends checking the local utility’s requirements. Begin with its current program document, not a national savings figure.
Identify the Program for Your Address
Request the tariff or program document that applies to your account and proposed system. Ask:
- Which customer category and system size are eligible?
- Which program applies to a new installation at this address?
- What approvals are required before the system can participate?
- Which effective date applies to this account?
A state name alone does not answer these questions. Record the utility, program name and document date for your discussion with the installer.
Read the Credit Rules Before Estimating Savings
Check the export rate, which charges credits can offset, the settlement period and treatment of unused credits. Ask whether import and export rates differ and whether credits expire; use the applicable document to answer these questions.
The Federal Trade Commission’s solar consumer guide notes that a household may still purchase electricity and pay utility fixed charges after adding solar. A smaller energy charge is not the same as having no remaining bill.
Request a Property Specific Estimate
Bring your electricity records and the applicable utility terms to the solar installer. Ask for a written estimate that separates expected generation, household electricity use, exported energy, remaining utility charges and the costs included in the proposal.
Compare proposals using the same assumptions. Keep estimates separate from measured results, and ask which assumptions would change the outcome. A generic annual saving or a long-term total without these inputs is not a forecast for your household.
Keep Utility Billing Separate From Home Monitoring
The utility’s documents determine the program and billing terms. Questions about a separate home energy monitor require the exact model’s documentation; this article does not establish any monitor’s suitability for utility billing or export measurement.
If your immediate question is why the bill increased, use the bill and daily-use comparison first. For a separate question about what you want to measure at home, the energy monitor buying guide helps organize the comparison.
For help finding Grus product documents, contact Grus support with the model or product-page link and your measurement question. Direct questions about program eligibility, export credits and bill settlement to your utility. Do not send account credentials or private billing records through a general product inquiry.
