Sleek matte-black home battery cabinet on a concrete wall at dusk

Storage & backup

Keep the lights on when the grid does not.

Storage is not one product. It is a sizing decision, a chemistry decision and a control decision — made against how you actually use power.

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01What we offer

Every structure.One comparison.

Home Backup

Critical-load or whole-home backup, sized to real outage history.

Solar + Storage

Paired systems that shift production into the hours you pay the most.

Commercial Storage

Peak shaving and demand-charge control behind the meter.

Resilience Planning

Load prioritization and runtime modeling before hardware is chosen.

Controls & Monitoring

Dispatch logic and visibility so the asset behaves as modeled.

Incentive Capture

Storage-specific credits and state programs applied where they exist.

02How we approach it

Analysis first. Always.

Runtime is modeled against your prioritized loads, not a marketing number.
Standalone storage is evaluated on its own merits where solar does not pencil.
Chemistry, warranty terms and degradation curves are compared before a brand is picked.

Why Iterum exists

03What we stand behind

Representative engagements

Illustrative examples, not customer testimonials.

Residential rooftop + storage

A household on a new time-of-use rate, with a summer bill spike and two outages last year.

Evaluates: Twelve months of billed usage, the rate schedule, roof condition, and how much load is shiftable.
Structures: Cash ownership, financed ownership, or a third-party owned PPA — with and without storage.
Decision logic: Usually turns on tax appetite and time in the home. An aging roof may mean re-roof first.
Why it fits: Storage sized to the loads that matter, with any incentives confirmed during analysis.

Illustrative exampleSacramento, CA

Commercial rooftop

A distribution facility with rising demand charges and three proposals in three different formats.

Evaluates: Proposals normalized to one set of assumptions, then interval data, roof condition and lease term.
Structures: Direct ownership, financed ownership, a PPA, or tax-advantaged structures where usable.
Decision logic: Capital allocation decides it: asset on the balance sheet, or cost in operating expense.
Why it fits: If the roof outlives less than the system, the sequence — not the system — is the recommendation.

Illustrative examplePhoenix, AZ

Industrial load and demand

A plant where short interruptions cost production and a few hours a month set peak demand.

Evaluates: Process load and shift pattern, what sets the peak, ratchet exposure, and site constraints.
Structures: On-site generation, storage for peak management, resilience-only, or doing neither.
Decision logic: Cost and continuity are separated — the right answer for one is rarely right for the other.
Why it fits: If dispatch constraints hurt operations, solve resilience first and revisit generation later.

Illustrative exampleHouston, TX

Community / utility-scale

A site with a real development case, an uncertain queue position, and capital on a fixed timeline.

Evaluates: Site control, interconnection and study status, permitting exposure, schedule and counterparties.
Structures: Develop to notice-to-proceed, sell earlier in a structured exit, or joint venture.
Decision logic: Timing governs: a queue position clearing after the capital window is worth less than an earlier exit.
Why it fits: Execution risk is priced explicitly, and not proceeding stays on the table.

Illustrative exampleTrenton, NJ

Residential backup, alternative structure

A household with a high delivered rate, winter outages, and little appetite for upfront capital.

Evaluates: Outage history, which circuits must stay live, heating load, roof condition, and transfer on sale.
Structures: Standalone storage, solar plus storage, a third-party owned structure, or no system.
Decision logic: Resilience and savings are separate purchases; a storage-first step is often more defensible.
Why it fits: Under a third-party structure incentives sit with the owner, so we compare delivered cost and terms.

Illustrative examplePortland, ME

Residential rooftop + storage

Example scenario: a household with a summer bill several times its winter bill, a recent time-of-use rate change, and two outages the previous year.

What Iterum evaluates: Iterum would start with twelve months of billed usage and the current rate schedule, then look at roof age and orientation, evening load, and how much of the bill is actually shiftable into a battery.
Structures considered: Ownership with cash, financed ownership, and a third-party owned PPA — each with and without storage.
Decision logic: In a project like this the comparison usually turns on tax appetite and how long the household intends to stay. If the roof needs work inside a few years, the honest answer may be to re-roof first and revisit.
Why it could fit: Storage is sized to the loads that matter during an outage rather than to the whole panel, and any incentives that apply are confirmed during analysis.

Illustrative exampleSacramento, CA

Example scenarios, not completed projects.

ModeledProduction, stated honestly

WarrantedWorkmanship and equipment

OngoingMonitoring and advocacy

How we operate

04Get started

Show me the math.

Share the basics and an advisor will come back with the structures worth considering for energy storage & backup power.

Step 01

Tell us what you're solving.

Start with the problem. We'll bring the analysis.