Financial research concept

Residential Solar Subscription Mix

measures the share of new residential solar customers choosing long-term subscription agreements rather than purchasing systems.

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.

Only about 7% of additions were purchase customers
Subscription mix changes financing and lifetime exposure
Subscription mix is not storage attachment
Part of the Residential Solar & Storage Subscription Economics
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Residential solar subscription mix measures the share of new Sunrun Customer Additions choosing long-term Customer Agreements rather than purchasing systems.

Sunrun reported that 93% of 2025 Customer Additions selected the subscription offering.

Only about 7% of additions were purchase customers

The 93% subscription share leaves roughly 7% of new Customer Additions in the purchase channel.

Applied mechanically to Sunrun's approximately 117,000 Customer Additions, the rounded mix would imply roughly 109,000 subscription additions and 8,000 purchase additions. Because both inputs are rounded, those are scale estimates rather than issuer-reported counts.

Subscription mix changes financing and lifetime exposure

Subscription systems retain long-duration customer cash flows and financing needs on Sunrun's model.

Purchase systems produce different cash timing and do not enter Subscriber Value economics in the same way.

Subscription mix is not storage attachment

Sunrun's year-end storage attachment rate was about 71%.

Use Storage Attachment Rate separately because a customer can be a Subscriber or Purchase Customer and independently choose whether to attach storage.

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.

Browse the full operating model in Company Analysis →

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 Installed Subscriber AdditionsSubscription MixCurrent concept
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 Subscriber Additions

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Compare public companies

Compare subscription versus purchase deployment mix separately from storage attachment and customer growth.

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