Onchain finance for energy assets
The financial layer for renewable energy
Fund real energy installations. Earn from what they measurably produce.
What Sunday is
Banking for the people who own the grid's future.
Sunday offers financial services to people and organisations that own, or want to own, a renewable energy asset: solar, wind, storage, or anything else along the supply chain. We start with project loans funded by lenders. Accounts, settlement and credit backed by the asset's future income come next. How it works
Project loans
Lend stablecoins to a specific installation and earn from its output.
Asset-backed credit
Credit lines secured by an installation's value and future income.
Accounts
IBAN, onchain stablecoin wallet and debit card in one account.
Energy settlement
Get paid in stablecoins for energy sold on the market.
Fiat ramp
Move between stablecoins and euros.
- No platform token. The only token is the loan itself, bought from us for one specific project.
- Not a DAO. Sunday is a company, accountable as one.
- Not a fund. You choose the project you lend to.
Where the yield comes from
Energy in, money out, every step visible.
- Funding
- Build
- Accruing
- Repayment
- Redemption
- Energy
- Money (EURC / EUR)
- Measured output → oracle → vault
Projects
Real installations, real output.
Ongoing
- Countries
- 1
- Projects
- 3
- Total principal
- €240,000
Finished
- Total principal
- €0
- Produced
- 0 MWh
- Interest paid
- €0
Why the number holds
The rules are set before you lend, and nobody can change them.
Yield follows measured production through a formula locked on chain. See the mechanism
The formula is fixed
Each vault's yield formula is pinned on chain when it launches, for the life of the vault. Nobody can change it, Sunday included.
No one can set the yield
Sunday holds no key that can state a yield. Yield is computed from production data by the pinned formula.
Principal is never touched
If data delivery stops, principal and accrued premium stay as they are. Accrual simply pauses until data resumes.
Data as the source reports it
Production figures come from the inverter vendor's API and are passed on unmodified. This is not trustless data. It is the same reading the owner sees.
How Sunday earns
Sunday takes a share of project returns, set per project and visible on chain. No active loans means no revenue for Sunday.
Risks
What can go wrong, stated plainly.
A loan, not ownership
The token is a claim on a loan, not on the physical asset. When the token is issued, the installation may not exist yet.
Production risk
If an installation breaks or stops producing, its loan token is worth close to nothing. So is the asset's income.
Counterparty risk
Your claim depends on Sunday as the issuer. Read the terms before you lend.
Data risk
Production data comes from the device vendor. We pass it on unmodified, but cannot independently verify it.
Variable yield
Returns move with supply and demand, like any onchain lending market. Nothing is guaranteed.