Elewatt

Sponsors

Keep Elewatt free, ad-free, and independent

I'm Reedik. I built Elewatt as a side project and have run it on my own card since day one. As more households and devices come online, the hosting bill is starting to bite. Sponsorship lets me keep the service 100% free for everyone β€” no ads, no premium tier, no selling user data β€” without paying for it out of pocket.

Why we need sponsors

Elewatt is not a startup. There is no investor money, no marketing budget, and no team β€” just one engineer who answers feedback personally. Spot-price tracking, ENTSO-E ingestion, Shelly schedules, Daikin control, push notifications, the cron jobs that run every 15 minutes β€” all of it has a real monthly cost. Sponsorship is the only revenue stream. If it works, the platform stays free and keeps growing. If not, I'll have to start cutting features.

Where the money goes

As of 2026-05

Roughly what it costs to keep the lights on. Updated quarterly.

Vercel hosting
Next.js app, image optimization, edge functions
240 €/yr
Neon Postgres
User accounts, contracts, prices, schedule logs
0 €/yr
Redis cache
Today + tomorrow price cache, FX rates
0 €/yr
ENTSO-E + data feeds
Day-ahead spot prices for all 9 markets
0 €/yr
Domain + email
elewatt.eu + transactional email (Resend)
12 €/yr
Monitoring
Uptime, error tracking, analytics
0 €/yr
Total
252 €/yr

Scale

registered users

30

countries served

9

smart devices automated

10

active users / month

200

Sponsorship tiers

All tiers are billed annually as a B2B advertising service from Lindau OÜ (Estonia, VAT-registered). EU companies with a valid VAT ID get reverse-charge invoices.

Gold
500 €+ / year

Large logo + link at the top of the wall. Featured in the page header. Priority replies on the public feedback board.

Silver
200 €+ / year

Medium logo + link in the Silver row. Listed in monthly thank-you note (when published).

Bronze
50 €+ / year

Name + optional link in the Bronze row. Counts as a small business expense for sponsors.

Fan
5 €+ / year

Your name on the supporter wall. The simplest way to say thanks if Elewatt has been useful to you.

Current supporters

Real companies and people who help keep this running.

Gold

(500 €+ / yr)
Be the first Gold sponsor β€” your logo will sit at the top of this page.

Silver

(200 €+ / yr)
Reedik Lindau

Reedik Lindau

Developer of elewatt.eu

β€œI made elewatt.eu to educate people about electricity”

Bronze

(50 €+ / yr)
Be the first Bronze sponsor.

Fan

(5 €+ / yr)
Be the first Fan.

Frequently asked questions

Is sponsoring Elewatt tax-deductible for my company?
We treat sponsorship as a B2B advertising service, not a charitable donation. Lindau OÜ issues a normal invoice (with 24% Estonian VAT, or reverse-charge if you're an EU company with a valid VAT ID). For most companies that means it's a deductible business expense, but please double-check with your own accountant.
Who am I paying β€” Elewatt, or someone else?
You're invoiced by Lindau OÜ, an Estonian VAT-registered company owned by Reedik Lindau (the person who builds Elewatt). Lindau OÜ pays the hosting and infrastructure bills directly, so the money goes straight to keeping the service online.
Can I sponsor privately without being listed on the page?
Yes. Uncheck "List me publicly" in the form. You'll still get an invoice and a thank-you, but your name won't appear on the supporter wall.
Is the sponsorship recurring?
We send one annual invoice. There's no auto-renewal β€” at the end of the year you can decide whether to continue. If you want to stop sooner, just email us and we'll remove your listing on request.
What if my logo or company name changes?
Email reedik@elewatt.eu with the update and we'll swap it on the wall within a day or two. The wall is hand-edited, not auto-generated, so changes are quick.
Invoiced by Lindau OÜ (Estonia). All sponsorships are commercial advertising services and follow Estonian VAT rules. See terms.