Buy energy certificate online: 3 top providers compared
Many owners look for a simple, low-cost and legally sound way to order an energy certificate online. With so many providers, choosing is hard.
In this article we compare three online providers for energy certificates in 2025. We look not only at cost but also at quality, usability, data protection and innovation.
What you need to know
What is an energy certificate, who needs it, how do you get it?
An energy certificate rates the energy quality of a building. It shows on a colour scale from green (A+ – very efficient) to red (H – very inefficient) the energy demand or consumption. Two types: Consumption-based — based on actual heating costs over the last three years. Demand-based — calculates theoretical demand from building condition and equipment. The certificate is legally required when a building is sold, newly let or leased (residential or commercial). It is available from an on-site energy consultant or, cheaper and faster, from a certified online provider. Here we compare three leading providers for 2025.
Energy certificate: 3 providers compared
We look at the main criteria that matter when choosing an online provider:
1. Price
Prices vary widely; there is no fixed price. Demand-based certificates range from around €100 to €600. Consumption-based certificates can differ by over €80. The table below shows how the three providers compare and why it pays to compare.
| Rating | Provider | Consumption-based | Demand-based |
|---|---|---|---|
| ⭐⭐⭐⭐⭐ | energyausweis.de | 49 € | 99 € |
| ⭐⭐ | online‑energieausweis.org | from 65 € | from 145 € |
| ⭐⭐⭐ | mcenergieausweis.de | from 59 € | from 99 € |
2. Delivery time and service
Besides price, speed and reliability matter. There are big differences in processing time and service.
| Rating | Provider | Delivery time |
|---|---|---|
| ⭐⭐⭐⭐⭐ | energyausweis.de | Within a few hours. Ideal for short-term marketing plans. |
| ⭐⭐⭐ | online‑energieausweis.org | Standard delivery in 24 h, express option at extra cost. |
| ⭐⭐ | mcenergieausweis.de | 48 h standard, optional same-day at extra cost |
3. Quality and checking process
A certificate is legally sound only if issued by a qualified person. We checked whether providers work with certified energy consultants and how transparent they are about qualifications.
| Provider | Checking | |
|---|---|---|
| ⭐⭐⭐⭐⭐ | energyausweis.de | Personal check by certified energy consultants. Use of certified software. Unique Smart certificate to select the best variant. |
| ⭐⭐⭐ | online‑energieausweis.org | Standard software without certification. Check by engineer. |
| ⭐⭐ | mcenergieausweis.de | Only states: legally valid under GEG. |
4. Agent-friendly features and tools
Agents, property managers and developers often need specific services such as listing templates or volume discounts. We checked which providers offer these.
| Provider | Service for agents | |
|---|---|---|
| ⭐⭐⭐⭐⭐ | energyausweis.de | Comprehensive agent service, partner and referral programmes. |
| ⭐⭐ | online‑energieausweis.org | Basic services, no tailored agent solutions. |
| ⭐⭐ | mcenergieausweis.de | Basic services, no tailored agent solutions. |
5. Data protection and usability
For online orders, the ordering process and security are important. We tested how intuitive the platforms are and how clear the data forms are.
| Provider | Usability | |
|---|---|---|
| ⭐⭐⭐⭐⭐ | energyausweis.de | Transparent privacy policy, no sharing with third parties. Optimised mobile data capture (photos, plans, etc.). |
| ⭐⭐⭐ | online‑energieausweis.org | SSL, terms GDPR-compliant. |
| ⭐⭐⭐ | mcenergieausweis.de | User-friendly interface. Data protection solid. |
6. Innovation and extras
Some providers stand out with hybrid certificates, express delivery or integrated funding advice. We looked at who goes beyond the standard.
| Provider | Extras | |
|---|---|---|
| ⭐⭐⭐⭐⭐ | energyausweis.de | Energyausweis Smart™ (in-depth added value). Automatic selection of the better certificate type. |
| ⭐⭐⭐ | online‑energieausweis.org | Phone support. No innovations. |
| ⭐⭐ | mcenergieausweis.de | Express option. Energy advice package from €650. |
Selection criteria and minimum standards
We selected providers in two steps: first a search for nationwide providers (originally over 30, reduced to 14 by excluding municipal, regional or agency-only offers). Second we applied minimum requirements that excluded more. Only providers meeting both were included. Minimum requirements: SSL-secured website, proper legal notice, clear terms and privacy policy, company based in Germany.
Our test winner: energyausweis.de
If you need a certificate quickly, reliably and at a fair price, energyausweis.de is hard to beat. It offers the best prices for both consumption-based and demand-based certificates, very fast delivery and high quality. Every certificate is checked by certified experts. The Energyausweis Smart™ concept is particularly innovative: the provider calculates internally whether consumption-based or demand-based gives the better efficiency and then issues the better variant. For agents, energyausweis.de offers a dedicated service including a mandatory-details checklist, automated overview sheet and full processing on request.
Our conclusion: energyausweis.de is the clear test winner. If you need a high-quality, legally valid certificate for sale, letting or for the bank, this is the best choice.
For more on prices and differences between providers, see our larger comparison: Energy certificate cost: 10 online providers compared. For changes from 2026: Energy certificate 2026: new A–G scale.