Financial research concept

Residential Solar Subscriber Additions

measures new deployed customers entering long-term residential solar or storage customer agreements during a period.

By Lee BaileyPublished Sep 26, 2026

Research context

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Research date: Sep 26, 2026Use the dated article and cited sources for the definition, examples, and stated limitations.
Operating-model context: 17 connected conceptsPart of the reviewed Residential Solar & Storage Subscription Economics; issuer definitions remain distinct where disclosed.
Company examples: 1 reviewed companyRelationships reflect supported examples, not a normalized cross-company KPI ranking.

Subscriber Additions are the denominator for unit economics
Subscriber Additions exclude Purchase Customers
Multiplying per-subscriber metrics creates modeled totals, not GAAP results
Part of the Residential Solar & Storage Subscription Economics
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Residential solar subscriber additions measure new deployed customers entering long-term Sunrun Customer Agreements during a period.

Sunrun reported 25,475 Subscriber Additions in the fourth quarter of 2025.

Subscriber Additions are the denominator for unit economics

Sunrun's fourth-quarter per-subscriber metrics include $50,165 of Subscriber Value, $47,988 of Contracted Subscriber Value, $41,067 of Creation Cost, and $2,692 of Upfront Net Subscriber Value.

The common Subscriber Addition denominator lets those measures be compared without mixing them with total Customer Additions.

Subscriber Additions exclude Purchase Customers

Subscribers are customers subject to long-term Customer Agreements.

Subscriber Additions therefore exclude Purchase Customers and differ from total Customer Additions.

Multiplying per-subscriber metrics creates modeled totals, not GAAP results

For example, 25,475 additions times $47,988 of Contracted Subscriber Value implies roughly $1.22 billion of modeled contracted value for the cohort.

That is a Grizzly Bulls scale calculation, not recognized revenue or a Sunrun-reported GAAP asset.

Primary sources: Sunrun 2025 Form 10-K, Sunrun 2026 Proxy Statement, and Sunrun first-quarter 2026 results filing.

Part of the Residential Solar & Storage Subscription Economics

Connects residential solar and storage deployment growth with subscription mix, per-subscriber creation economics, network capacity, and the discounted value of contracted and modeled subscriber cash flows.

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Where this concept fits

Customer growth, subscription mix, and deployment volumeCurrent relationship
Customer Additions split between subscription customers and system purchasers, while Subscriber Additions feed the long-term Customer Agreement base. Solar and storage capacity measure the physical deployment produced by that customer growth.
Customer Additions Customer Count Solar Capacity Installed Storage Capacity InstalledSubscriber AdditionsCurrent conceptSubscription Mix
Storage adoption and cumulative network scale
Storage Attachment Rate describes the mix of new customers taking batteries, while Networked Solar Capacity captures cumulative deployed solar scale across the installed network.
Networked Solar Capacity Storage Attachment Rate
Subscriber unit economics and earning-asset value
Contracted Subscriber Value and Creation Cost determine near-deployment economics, while Subscriber Value adds modeled upside and Gross Earning Assets extend discounted cash-flow assumptions across the existing subscriber base.
Contracted Gross Earning Assets Contracted Subscriber Value Creation Cost per Subscriber Addition Gross Earning Assets Net Earning Assets Subscriber Value Upfront Net Subscriber Value Upfront Net Subscriber Value Margin Upside Gross Earning Assets

See It in Company Research

These companies are examples of how the concept is reported or discussed in public filings. Definitions can differ by issuer; these links open company research rather than a normalized metric comparison.

RUNOpen operating-model research →17 of 17 reviewed concepts in Residential Solar & Storage Subscription EconomicsCustomer growth, subscription mix, and deployment volume6 of 6 bridge concepts supportedContinue through this bridge:Customer Additions Customer Count Solar Capacity Installed Storage Capacity Installed Subscription Mix

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Continue from the concept into the Grizzly Bulls research surface that best matches the next question. These links are research continuations, not recommendations or required steps.

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Compare public companies

Compare the subscription deployment denominator with per-subscriber value and creation-cost metrics, excluding Purchase Customers.

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