Solstice

What Solstice does

Solstice (Solstice Power Technologies LLC) is a community solar subscriber lifecycle platform that connects residential households, small businesses, and municipalities to locally-sited shared solar farms and provides full-stack subscriber services to solar developers and asset owners. Founded in 2017 as a for-profit spin-out of the 2015 nonprofit Solstice Initiative (co-founded by Steph Speirs and Sandhya Murali), the company operates from Boston, MA and was acquired by Perch Energy in February 2026 after several years as a wholly-owned subsidiary of MyPower Corp., the North American investment arm of Japan's Mitsui & Co. The integrated online platform combines subscriber acquisition, enrollment, management, billing (including utility consolidated billing), collections, reporting, portfolio migration, and quality assurance workflows, with proprietary machine learning tools (EnergyScore for LMI eligibility and a churn-prediction model) and bilingual 24/7 in-house customer support.

The company serves two primary customer segments. On the demand side, it acquires and retains residential and small commercial subscribers - including a deliberate focus on low- and moderate-income (LMI) households, with over 50% of subscribers classified as LMI versus a 10% industry average - through direct-to-consumer enrollment (solstice.us), community-organizer partnerships, educational webinars, on-the-ground sales, digital ads, and mailers. On the supply side, it offers B2B services to solar developers and asset owners covering subscriber acquisition, enrollment, management, REC monetization, and portfolio migration under multi-year contracts. Revenue is generated through transaction fees on subscriber acquisition, managed services fees, professional services for portfolio migration, and transaction fees on enterprise REC sales to investment-grade ESG-mandated buyers. Following the Perch Energy acquisition, the combined platform manages 3 GW across 1,000+ projects in 16 states serving 430,000+ residential customer equivalents, making it the largest pure-play community solar acquisition and management platform in the United States.

Name

Solstice

Legal name

Solstice Power Technologies LLC

Website

https://solstice.us

Company type

Private

Founded year

2017

Operating status

Acquired

Headcount range

11–50 employees

Short description

Solstice is a community solar subscriber lifecycle platform serving residential and LMI subscribers on one side and solar developers/asset owners on the other, via integrated acquisition, enrollment, management, billing, and REC services across 16 U.S. states (now under Perch Energy).

Ownership category

akta.pro rank

Product category

Community Solar Services

NAICS

Solar Electric Power Generation (221114)

akta.pro primary industry

Community Solar Development & Subscription Management (EUAMAJAA)

Keywords

• Community solar services
• Subscriber acquisition platform
• Shared solar subscription
• Renewable energy certificates
• Solar developer tools

Headquarters

HQ city

Cambridge

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Marketing or Sales, Operations, Technology or R&D, Infrastructure

Revenue model

1. Subscriber acquisition services for developers: Solstice runs targeted multi-channel sales (on-the-ground, digital ads, mailers, webinars, referrals, local press) to fill community solar projects with qualified subscribers on behalf of solar developers and asset owners. Recurring engagement per project, scaled nationally across 16 states.
2. Subscriber management services: Full-lifecycle subscriber administration including billing/invoicing, churn mitigation with free replacement guarantees for 3 months post-COD, dual-billing and utility consolidated billing (UCB) handling, and 24/7 bilingual customer support. Contracted per project.
3. REC enterprise sales services: Sale of differentiated, community-benefit Renewable Energy Certificates (RECs) to investment-grade enterprise buyers with multi-year contracts and ESG mandates. Connected to direct utility bill relief, nonprofit support, community advisory boards, and workforce development.
4. Portfolio migration services: Migration of subscribers from under-performing community solar portfolios onto Solstice's platform, with handoff, communications, and billing transition handled end-to-end. Priced per migrated project.
5. EnergyScore product revenue: Machine learning eligibility product (EnergyScore) that re-defines credit eligibility for low- and moderate-income solar access, scaled with Google.org grant support.

Pricing tiers

Go-to-market motion4 records

Distribution channels4 records

Marketing channels11 records

Core offering

Solstice delivers community solar subscription services that connect households and small businesses to local shared solar farms, allowing them to receive utility bill credits without installing rooftop panels. For solar developers and asset owners, Solstice provides an end-to-end subscriber lifecycle platform with modules for subscriber acquisition, enrollment, management, reporting, collections, portfolio migration, and REC benefits, augmented by its proprietary EnergyScore machine-learning eligibility model.

Product overview

Solstice (Solstice Power Technologies LLC) operates as a unified community solar subscriber lifecycle platform combining a household-facing subscription service with a developer/asset-owner-facing software and services platform, plus a set of business solutions. At the consumer level it offers Solstice Community Solar subscriptions that connect households and businesses to local shared solar farms. For developers and asset owners it delivers an integrated platform with the Subscriber Acquisition, Subscriber Enrollment, Subscriber Management, Reporting, Collections, Portfolio Migration, REC Benefits, Quality Assurance, and Community Solar Expertise (Policy Hub) modules that together cover the full subscriber lifecycle from lead generation through long-term account servicing. For businesses it layers on Community Solar for Businesses, Purpose-driven RECs, and the EnergyScore machine-learning eligibility tool. Following the February 2026 acquisition by Perch Energy, Solstice operates within the Perch Energy family of companies as the largest pure-play community solar acquisition and management platform in the U.S., managing over 3 GW across 1,000+ projects in 16 states.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• 45,000+ community solar subscribers served with a 4.8/5 star rating
• +5 more outcomes

Named customers7 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration5 records

AI capability4 records

Feature6 records

Partnerships

Seven partnerships are on record, tiered flagship / acquirer, major channel partner, major development partner, development partner, industry advocacy partner, regulatory partners required to operate and industry collaboration partner.

• Perch Energyflagship / acquirerStrategic or Co-development PartnerBoston-based Perch Energy acquired Solstice from Mitsui/MyPower on February 18, 2026, creating the largest pure-play community solar acquisition and management platform in the U.S. (3 GW, 1,000+ projects, 16 states, 430,000+ residential customer equivalents). Solstice now operates under the Perch Community Solar brand within Helios Arcadia New Energy, LLC.
• Standard Solarmajor channel partnerChannel Partner/ Reseller/ DistributorStandard Solar acquired the eight-project, 48.4-MW New Mexico community solar portfolio; Solstice Power Technologies LLC is responsible for subscriber acquisition for the projects, expected to generate ~103,287 MWh annually.
• Pluma Constructionmajor development partnerStrategic or Co-development PartnerPluma Construction developed the eight-project, 48.4-MW community solar portfolio in New Mexico, with Solstice leading subscriber acquisition and ForeFront Power providing support.
• ForeFront Powerdevelopment partnerStrategic or Co-development PartnerForeFront Power supported development of the eight-project, 48.4-MW community solar portfolio in New Mexico, on which Solstice leads subscriber acquisition.
• Industry organizations (NYSEIA, ACORE, others)industry advocacy partnerGTM or Marketing PartnerSolstice is a member of industry organizations (NYSEIA, ACORE, and others visible on the Community Solar Expertise page) that advocate for inclusive community solar policies.
• State program administrators (NYSERDA, NJ BPU, Illinois Shines / IPA, NM PRC, InClime, MA, MD, MN program offices)regulatory partners required to operateOthersSolstice works closely with state program administrators across IL, MD, MA, MN, NJ, NM, NY to comply with program rules, advocate for policy updates, and administer subscriber services under programs such as ICSA, SEEF, SREC-II, Illinois Shines, SMART, and SOMAH.
• Reactivateindustry collaboration partnerStrategic or Co-development PartnerPartnership referenced in New Project Media interview with Solstice co-founder Steph Speirs about expanding community solar access; Solstice manages roughly half of approved capacity in Illinois Solar for All, a program in which Reactivate is a major partner.

Scale indicators9 records

Recent moves6 records

Expansion highlights6 records

Emerging players

• Mosaic: Solar financing platform historically focused on residential and small commercial loan products; adjacent comparable in the solar subscription and financing layer, with growing community-solar exposure.
• EnergySage: Online marketplace for rooftop and increasingly community solar; overlaps with Solstice in solar subscriber acquisition, education, and comparison, but is primarily a lead-generation platform rather than full subscriber lifecycle management.

Direct peers

• DSD Renewables: National community solar developer and operator that also runs subscriber acquisition and management programs in many of the same states (NY, NJ, MA, MN, IL) as Solstice; competes for the same developer and project fill mandates.
• Uplight: Energy-software platform serving utilities and community-solar program administrators with subscriber onboarding, billing, and program management. Direct competitor in the B2B community solar software and services layer.
• CleanChoice Energy: Retail clean energy supplier offering community solar subscriptions in multiple states; competes with Solstice directly for residential and small-business community solar subscribers in the mid-Atlantic and Northeast.
• Perch Energy: Acquirer of Solstice (Feb 2026) and operator of the largest US pure-play community solar platform; Solstice now operates as the consumer-facing brand under Perch. Directly comparable in subscriber acquisition, developer services, and REC monetization across 16 states.
• Arcadia: Community-solar-focused clean energy platform that combined with Perch Energy in March 2025; the combined Perch/Arcadia platform is the same entity Solstice now sits within. Direct overlap in utility data platform, community solar subscriber management, and developer services.
• PosiGen: Residential solar and energy efficiency provider focused on low- and moderate-income households; directly comparable to Solstice in mission, LMI focus, and community-based acquisition.

Broad incumbents

• Sunrun: Largest US residential solar company and a broad incumbent in distributed solar; competes with community solar indirectly by offering rooftop subscriptions and PPAs to the same residential customer base that Solstice targets.

Others

• Footprint Project / Coalition for Community Solar Access: Industry trade association and policy advocate advancing state community solar programs (e.g., ICSA, NYSERDA partners); relevant ecosystem peer given Solstice's deep state-by-state policy engagement.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/solarforgood

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds9 records

Investors21 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments1 record

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Solstice