Maryland solar economics depend on more than the panel system price. A homeowner should verify the utility's net-metering rules, the system's eligibility for Maryland Solar Renewable Energy Credits, current program terms, interconnection steps, and any tax or rebate assumption for the project year. SRECs can add value, but they are market instruments and should not be treated as guaranteed income in a quote.
Net metering and SRECs are different
Net metering concerns how a utility measures electricity flowing to and from the home and applies credits under its tariff. An SREC represents the environmental attribute of solar generation and may be sold through an eligible market. A system can have a net-metering relationship with its utility and a separate SREC registration or transaction path. Ask the installer to identify each assumption separately.
The Maryland verification checklist
Before comparing proposals, record:
- The electric utility serving the address and the applicable rate schedule
- Whether the proposed system is sized against documented annual consumption
- The utility interconnection application and approval steps
- How exported electricity is credited and when credits expire or roll over
- Whether the system and installer meet current SREC eligibility requirements
- Who registers the system, owns the certificates, and receives any proceeds
- Whether the quote assumes a current state, utility, or federal incentive
- What happens if a program closes, changes, or rejects the application
Why system size matters
Oversizing can create a mismatch between production, household consumption, utility rules, and financing assumptions. Maryland's energy guidance describes net energy metering and SRECs, but the homeowner still needs the exact utility and project rules. Use actual bills or verified consumption data instead of a national household average. If the installer models future EV charging, heat-pump conversion, or battery charging, request those assumptions in writing.
Questions about SRECs that belong in the contract
Ask who owns the SRECs for the full contract term, who handles certification, whether any upfront payment is an estimate or a fixed contractual amount, and what happens if the system under-produces. A lease or power-purchase agreement may allocate environmental attributes differently from a cash purchase or solar loan. Read the transfer, production guarantee, roof access, insurance, and home-sale provisions together.
Utility interconnection is a separate milestone
Do not treat “panels installed” as the same as “system approved to operate.” The utility may require an application, equipment documentation, inspection, meter change, and permission to operate. The contractor should identify which steps it handles and which actions require the homeowner's signature. Keep copies of the application, approval, final inspection, and permission-to-operate record.
Federal and local incentive caution for 2026
Federal residential clean-energy guidance changed after 2025. Do not subtract a prior-year federal credit from a 2026 comparison without checking the current IRS rule and the property's placed-in-service date. Maryland and utility programs also have their own eligibility, funding, income, equipment, and application rules. Renovessa treats unverified incentives as unverified rather than reducing a planning result.
How to compare solar proposals
Put each proposal into the same table:
- System size and expected annual production
- Production model, shading assumptions, degradation, and exclusions
- Utility rate and export-credit assumptions
- Net-metering and SREC ownership
- Gross contract price, financing APR, dealer fees, term, and total repayment
- Roof condition, warranty, removal-and-reinstall terms, and electrical upgrades
- Interconnection, permits, monitoring, and closeout responsibilities
Use the Renovessa solar estimator
The Renovessa solar estimator is designed to collect the address, roof context, consumption, utility, goals, and financing preferences needed for a more useful comparison. Use the result as a planning brief, then ask installers to confirm every incentive, interconnection, and SREC assumption before signing.
Sources and limitations
This guide uses Maryland Energy Administration solar guidance, DOE solar planning guidance, utility net-metering information, and current IRS pages. Program terms and markets can change. This is educational planning content, not tax, utility, investment, or legal advice.