A solar-plus-battery PPA can let an eligible SDG&E homeowner use renewable energy without an upfront equipment purchase where the offer provides it. If refinancing your mortgage is also on the horizon, bring the solar agreement into the lender conversation early.
The useful question is not simply whether the home has panels. It is how the agreement calculates payments, who owns each component and what documents the lender needs.
Give the lender the actual payment formula
The CPUC solar guide explains that a PPA provider owns the solar system and sells its generated electricity. Supply the signed agreement, amendments, current rate schedule and recent invoices. Include any separate battery lease, loan or service charge.
For loans subject to Fannie Mae’s solar-property requirements, the lender must review the PPA. Payments calculated solely from energy produced may be excluded from the debt-to-income ratio—the comparison of qualifying debt payments with income.
That is a conditional underwriting rule, not a promise that every PPA or mortgage qualifies. Ask the lender to assess your exact payment structure and loan program, especially if a battery has a separate fixed payment. Do not describe a mixed invoice as entirely production-based without supporting documents.
The same Fannie Mae guidance says provider-owned PPA panels cannot be included in the property’s appraised value. Their practical energy benefit and their treatment in a mortgage appraisal are different considerations.
Keep the SDG&E bill in your household budget
A payment’s exclusion from a lender’s calculation does not remove it from your budget. PPA payments remain due under the agreement, alongside applicable utility charges.
SDG&E’s Solar Billing Plan applies charges for imported electricity and credits for exports on the monthly bill. Bring statements covering the same period as the PPA invoices. If your home remains on an older NEM arrangement, use that account’s actual billing records instead of substituting Solar Billing Plan assumptions.
For a hypothetical budgeting month, a $160 PPA invoice plus $75 remaining utility bill totals $235 before any separate battery charge. Those are invented planning amounts, not an SDG&E rate or an offer. The household still needs that $235 even if the lender excludes an eligible PPA payment from its debt calculation.
Our SDG&E monthly-billing and true-up guide explains why the utility statement deserves its own review.
Request provider paperwork before the closing deadline
Ask the lender or title company which solar documents it needs, then send that request to your provider. Have them identify any required release or subordination of a recorded filing, rather than assuming the solar agreement must be bought out.
As one provider-specific example, Tesla’s refinancing instructions direct PPA customers to request documents through their Tesla Account. As checked September 20, 2026, Tesla lists a $150 processing fee for a temporary UCC-1 release or subordination. That is not a universal PPA fee or the price of purchasing the equipment.
Confirm your provider’s required documents, charges and processing time with the lender. Mortgage approval and closing timing remain subject to their review.
Keep battery benefits and contract terms explicit
When comparing a new no-upfront offer, review eligibility, all installation charges, ongoing payments, escalators, term, maintenance and home-sale provisions. Specify battery ownership and replacement coverage. No upfront purchase does not mean free electricity or guaranteed savings.
A battery can support selected essentials during outages, but available charge, connected demand and equipment limits determine duration. Solar recharge needs suitable sunlight and compatible backup equipment, as PG&E’s general battery guidance explains.
Start your homeowner conversation with West Coast Alternatives with both energy goals and future refinancing plans in view. A clear proposal gives you useful information to share with your mortgage professional.