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SolarCity solar panel installation van in Portland, Oregon

Photo by Tony Webster (CC BY 2.0)

Acquired → TeslaSolar installationResidential energy

SolarCity

Musk-funded residential solar installer. Acquired by Tesla in 2016 in a $2.6B deal that triggered a multi-year shareholder lawsuit.

Founded2006
HQFoster City, California
SectorSolar installation · Residential energy
Co-foundersLyndon Rive, Peter Rive

Photos

SolarCity was Musk's attempt to close the other side of a sustainable energy equation: if Tesla electrifies transport and the grid stores clean energy, someone has to generate it at the consumer level. He funded his cousins Lyndon and Peter Rive to build what became America's largest residential solar installer. The 2016 acquisition by Tesla for $2.6 billion was immediately controversial — a related-party deal that took six years to fully resolve in court. Today the Solar Roof and Megapack represent SolarCity's legacy, integrated inside Tesla Energy.

Founding Story

SolarCity traces its origin to Burning Man 2004, where Musk floated the concept to his cousins Lyndon and Peter Rive: a company that would handle the full residential solar stack — design, permitting, equipment, installation, financing — as a single turnkey service. The Rive brothers incorporated on July 4, 2006. Musk provided the initial capital and became chairman.

The company's model was built on leases and power-purchase agreements: homeowners paid nothing upfront and instead signed long-term contracts to buy the electricity generated by panels on their own roofs. This removed the largest barrier to solar adoption and turned SolarCity into the country's largest residential solar installer by 2014.

By 2016, SolarCity was in serious financial difficulty. In August 2016 Musk proposed a Tesla acquisition at ~$2.6 billion all-stock. Critics immediately noted the conflict: Musk was Tesla's CEO, SolarCity's chairman, and its largest individual shareholder simultaneously. A Delaware court ruled in his favor in April 2022. SolarCity's legacy lives in Tesla Energy: the Solar Roof, Powerwall, and Megapack lines.

From the lifetime timeline (importance ≥ 4)
  1. Nov 21, 2016
    Tesla acquires SolarCity for $2.6B
    Tesla closes the all-stock acquisition of SolarCity, folding it into what becomes Tesla Energy. Critics call it a bailout of a company where Musk's cousins are executives and Musk

Overview

SolarCity was founded in 2006 by Lyndon Rive and Peter Rive — Elon's cousins — based on an idea floated by Elon at Burning Man 2004. Elon was the largest shareholder and chairman of the board from inception. SolarCity grew to become the largest US residential solar installer by 2014. In 2016, Tesla acquired SolarCity for ~$2.6B in an all-stock deal, integrated as Tesla Energy. Tesla shareholders sued, alleging Musk had bailed out the failing company at unfavorable terms; a Delaware Chancery Court found in Musk's favor in April 2022.

Elon's Role

Largest individual shareholder
2006 – 2016-11
Chairman
2006-07 – 2016-11

Co-founders

Lyndon Rive
Co-founder, CEO; Elon's cousin
Peter Rive
Co-founder, CTO; Elon's cousin

Key Milestones

  1. Jul 4, 2006
    founding

    SolarCity founded

    Rive brothers incorporate, with Musk as chairman.

  2. Dec 13, 2012
    ipo

    SolarCity IPO

    $8/share; raised $92M. Stock would later quadruple in 2014.

  3. Nov 21, 2016
    acquisition

    Tesla acquires for $2.6B (all stock)

    Folded into Tesla Energy. Shareholder lawsuit follows.

  4. Apr 27, 2022
    lawsuit

    Delaware court rules for Musk

    Chancellor Slights finds Musk did not breach fiduciary duty.

Predictions

2016
by 2020

Solar Roof will be cheaper than a regular roof when you account for the cost of electricity.

Solar Roof production ramped slowly. By 2021-2022 Tesla faced criticism for high prices and installation delays. Long-term economics depend heavily on electricity prices.

energy
Partial
2016
by 2026

Within 10 years, solar plus stationary storage will be cheaper than any fossil fuel energy in all markets.

Solar LCOE has become the cheapest electricity source in most markets. Battery storage costs have also dropped dramatically, though full parity on all grids remains in progress.

energy
Partial
2020
by 2025

Tesla Megapack will be deployed at gigawatt-hour scale globally within 5 years, stabilizing grids worldwide.

Tesla Energy revenue grew significantly and multi-GWh Megapack projects have been deployed in Australia, California, and elsewhere. Global scale is growing but 'worldwide grid stabilization' is still limited.

energy
Partial

Controversies & Disputes

SolarCity acquisition shareholder lawsuit

lawsuit2022

Tesla shareholders sued Musk and the Tesla board in Delaware Chancery Court, alleging that the $2.6B acquisition of SolarCity in 2016 was a bailout of a failing Musk-family company (Musk, his brother Kimbal, and his cousins the Rive brothers all had stakes) at Tesla shareholder expense. The plaintiffs argued Tesla overpaid for a company facing existential cash problems.

Outcome: Chancellor Kathaleen McCormick ruled in Musk's favor in April 2022, finding that the Tesla board's process, while imperfect, was not a breach of fiduciary duty and that the acquisition price was within a reasonable range. Musk and the board were not required to pay damages.

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