Commercial businesses pursuing renewable electricity goals have two primary market-based options: Renewable Energy Certificates (RECs) and community solar subscriptions. Both allow renewable energy claims without on-site generation, but they work differently and carry different costs and accounting implications.
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Side-by-Side Comparison
| Factor | Option A | Option B |
|---|---|---|
| What you receive | Environmental attribute certificates | Bill credit from solar array output |
| Electricity source | Grid (separate from RECs) | Local solar array output |
| Connection to location | Geographic flexibility | Must be in same utility territory |
| Additionality | Varies by vintage and source | New solar capacity created |
| Cost structure | Per-MWh REC price | Per-kWh subscription rate |
| Term | Annual or multi-year | Typically 20+ year subscription |
| Best for | Flexible renewable accounting | Accounts seeking local solar bill credits |
How RECs Work for Commercial Accounts
A REC represents 1 MWh of renewable electricity generated and added to the grid. Buying RECs matching your annual consumption lets you claim renewable electricity use under most corporate accounting frameworks (RE100, GHG Protocol Scope 2). RECs are tracked in regional registries and transferred to you as the beneficial owner.
How Community Solar Works
Community solar allows commercial accounts to subscribe to a share of a nearby solar array. The array generates electricity that goes to the grid; you receive bill credits from your utility equal to your share of the array's output. Community solar creates additionality (new solar capacity) and generates RECs, which are typically retired on your behalf.
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Cost Comparison
Commodity RECs (wind, national market) are inexpensive — often $1–$3/MWh. Solar RECs and bundled renewable supply products cost more. Community solar subscriptions typically offer a discount of 5–15% below your utility supply rate, making them cost-negative for the renewable attribute — you save money while achieving renewable goals.
Which Supports Stronger Renewable Claims
Community solar subscriptions generally support stronger renewable claims: they create additionality (new capacity), they're location-specific, and they typically retire RECs on the subscriber's behalf. Unbundled RECs support renewable claims under standard frameworks but are considered lower quality for more rigorous criteria like 24/7 matching.
Availability
Community solar availability is limited by project location and enrollment caps — not all utilities have active community solar programs, and waitlists exist in some markets. RECs are available in any deregulated market, any time. For accounts needing immediate renewable coverage, RECs are the flexible option; community solar is a planning-horizon decision.
Frequently Asked Questions
Do RECs or community solar meet corporate sustainability standards?
Both are accepted under the GHG Protocol Market-Based Scope 2 accounting standard. Community solar subscriptions with REC retirement are generally considered higher quality. RE100 and Science Based Targets also accept both, with some preference for bundled renewable contracts.
Can I combine RECs and community solar?
Yes. Many commercial accounts use community solar for a portion of their usage (where available) and RECs to cover the remainder, achieving full renewable accounting at a lower blended cost than either approach alone.
How do I get community solar in my area?
Availability depends on your utility territory and state policy. States with active community solar markets include NY, IL, MA, MD, NJ, CT, MN, and others. We can identify available projects in your utility territory and evaluate subscription economics.
Are RECs tax deductible or eligible for incentives?
RECs themselves don't generate tax credits. However, community solar subscriptions may be treated as utility expenses for tax purposes, and some states offer additional incentives for renewable procurement. Consult your tax advisor for specifics.
Does buying RECs change my electricity contract?
No. RECs are purchased separately from your supply contract unless you're buying a bundled green supply product. Your supply contract remains the same; RECs are an overlay that changes your renewable accounting, not your physical electricity supply.