A Coronado homeowner who relies on a home elevator should make it an explicit part of a solar-plus-battery proposal. Backup may be possible, but an elevator's emergency lowering feature does not establish that a home battery can power ordinary trips upstairs and downstairs.
SDG&E serves the island's electric network and describes ongoing reliability improvements in its Coronado Island project information. Your home's backup design still needs to address its particular elevator and household loads.
Start with what the elevator already does
For one concrete example, Savaria's Infinity home elevator includes a UPS battery system for lowering, cab lighting, unlocking and automatic gate opening during a power failure. Those listed functions are different from a promise of continued normal travel.
The same manufacturer's specifications list a 230-volt single-phase or 208-volt three-phase power supply, plus a separate 120-volt lighting circuit. These are model-specific details, not specifications for every home elevator. They show why identifying only the main elevator breaker can leave part of the equipment out of the conversation.
Give your elevator service company the proposed battery and inverter specifications. Ask it to confirm the installed model's approved backup arrangements, emergency lowering procedure and maintenance requirements for its own battery.
Check compatibility before counting trips
Ask the solar designer and elevator service company to resolve these questions together:
- Can the backup system supply the elevator's required voltage, phase, running power and motor-starting demand?
- Which lighting, controls, doors and communication circuits must remain powered?
- What happens when utility power fails, backup starts, or battery charge runs low?
- Which other household loads can operate at the same time?
A circuit's amp rating is not a measurement of energy used per trip. Likewise, battery capacity in kilowatt-hours does not prove that its inverter can start a particular motor. Our guide to battery storage capacity versus power explains that distinction.
For illustration only, suppose a designer measures 0.08 kWh per complete round trip and you plan ten round trips. Travel would use 0.8 kWh under those assumptions. That excludes standby consumption, lighting, conversion losses and other home loads; it is neither a Savaria specification nor a runtime estimate. Starting compatibility must be established separately.
Put the result into the Coronado project plans
Have the installer identify the elevator and associated circuits in the backup scope, with any operating restrictions written down. Coordinate applicable plan review and inspections with Coronado Building Services, which handles residential construction standards and permit guidance. Request a professionally supervised commissioning check using the manufacturers' procedures.
If elevator access is essential, keep an alternative household access plan. A charged battery does not guarantee every trip or replace the elevator's safety features. Do not bypass interlocks or improvise connections.
Make the PPA support your priorities
A suitable solar-plus-battery PPA can help eligible homeowners obtain a professionally designed system with qualifying no-upfront-cost terms. Confirm that elevator support, required electrical work and the battery are actually included.
Under a PPA, the provider owns the solar system and you make ongoing electricity payments. Review the price, any escalator, contract length, battery ownership and fees, maintenance responsibilities and home-sale transfer terms. The CPUC solar guide explains these arrangements. No upfront payment does not mean free electricity or guaranteed savings.
Start a West Coast Alternatives consultation with your SDG&E bill, elevator model and daily access needs so the equipment proposal can address them directly.