Fullflex Energie
Energy supplier
Fullflex Energie supplies under the ACM license of OpenSource Energie (since 2022). Contracts: dynamic.
Checked on September 27, 2026
EV-score
Limited · 4.4/10
Fit for home charging, 10 public checks
- Charging (35%)6.7
- Costs (30%)0.0
- Certainty (25%)8.3
- ERE (10%)0.0
ACM license
- ACM license
- Active
- License holder
- OpenSource Energie
- Granted on
- January 18, 2022
ACM register checked on October 19, 2026. View the register
In short
- Supplies
- households, businesses
- Taking new customers
- Yes
- Contracts
- dynamic
Good to know: Trade name of OpenSource Energie B.V. (white label). Main product is a dynamic electricity and gas contract; fixed and variable prices only via the statutory model contracts. The site states both consumers and businesses can become customers and has separate pages for households and large businesses. The site also offers the statutory model contracts (fixed and variable); the main product is dynamic.
Electricity label 2025
Company mix
| Source | Share |
|---|---|
| Grey | 99.79% |
| Import | 99.79% |
- Renewable
- not stated
- Dutch guarantees of origin
- not stated
- CO2
- 0 g/kWh
- Radioactive waste
- 2990 µg/kWh
Where the label states grams per kWh or grams per MWh, that figure is converted exactly to micrograms per kWh (1 gram = 1,000,000 micrograms, 1 gram per MWh = 1,000 micrograms per kWh).
The pie chart states 99.79% grey and 99.79% import. The green share and the Netherlands share are not printed as a percentage.
Stroometiket 2025, FullFlex Energie · Checked October 13, 2026 · All electricity labels
Dynamic contract
- Fixed fee per month
- Not public
- Markup per kWh
- Not public
- Price per
- quarter-hour
- Supplier cost per year
- Not public
Fixed supply costs and the purchase fee are not published as amounts; the site refers to a personal quote. Per the product terms, an extra surcharge of up to €0.01 per kWh may apply while a conventional (non-smart) meter is in place.
Open-ended; 30-day notice without termination fee (product terms). A smart meter is required for settlement at dynamic prices.
* Amount as the supplier publishes it; the supplier does not say whether it includes VAT. Supplier cost per year: 12 × fixed fee + markup × 5,130 kWh (average household plus 15,000 km of home charging), incl. VAT, excl. energy tax and grid costs.
Compare all dynamic contractsFor EV drivers
ERE deal: No. No ERE offer found on the brand's own website.
Smart charging: No own smart-charging service; the FAQ explains you can schedule charging yourself or automate it with a smart control box that steers appliances on quarter-hour prices.
Home battery: Per the product terms, installations that actively steer consumption or feed-in (such as a home battery or energy management system) must be reported in advance; a specific contract form may be required.
Feed-in: While net metering applies, feed-in and consumption are offset per tariff period (quarter-hour or hour); for a surplus in a period you receive a fee based on that period's market price minus the purchase fee. Energy tax is netted annually. No feed-in amounts published for the dynamic contract.
Sources
- Website Fullflex Energie
- Tariffs Fullflex Energie
- Fullflex Energie dynamisch energiecontract
- Fullflex Energie FAQ zonnepanelen, batterijen en slimme sturing
- Fullflex Energie belangrijke documenten
- Fullflex Energie productvoorwaarden
- Fullflex Energie particulier
- ACM: energieleveranciers met een vergunning
Checked on September 27, 2026
Price history
What changed at Fullflex Energie
We record every check of our data, since September 27, 2026. Latest check: October 21, 2026. Corrections of our own mistakes do not count as changes.
- Dynamic contract
- Yes
- unchanged
- Smart charging
- No
- unchanged
- ERE offer
- No
- unchanged
- ACM license
- Active
- unchanged
- EV score
- 4.4/10
- unchanged
- CO2 (grams per kWh, electricity label)
- 0
- unchanged
- Radioactive waste (micrograms per kWh)
- 2,990
- unchanged
No changes seen since September 27, 2026. When a price, term or score changes, this shows when, and from what to what.
All trends: electricity price, charging and EREEV-score
EV score 4.4: how it is calculated
Ten public checks, the same for every supplier. Anything not public earns 0 points; without an active ACM license the score is 0.
Charging
6.7/10 · weight 35%- Dynamic contractYes: 11 / 1
- Smart charging in the appYes: 1 · coming soon: 0.50 / 1
- Home-battery steeringYes: 11 / 1
Costs
0.0/10 · weight 30%- Fixed fee publicWith VAT stated: 1 · without: 0.50 / 1
- Markup per kWh publicWith VAT stated: 1 · without: 0.50 / 1
- Supplier cost per yearCheapest third: 1 · middle third: 0.50 / 1
Certainty
8.3/10 · weight 25%- ACM license activeYes: 11 / 1
- Years licensed5+ years: 1 · 2+ years: 0.50.5 / 1
- Taking new customersYes: 1 · unknown: 0.51 / 1
ERE
0.0/10 · weight 10%- Own ERE dealOpen: 1 · waitlist or pre-registration: 0.50 / 1
Your ERE payment is arranged separately
Whichever supplier you use: compare ERE providers on net earnings, terms and trust score.