
Advisory
Specification and tendering
A manufacturer-neutral specification, a clean tender and a bid comparison that puts every offer on the same basis.
4,074 kWp
PV by Equator Solar
3,923 kWh
Storage by Equator Solar
34
Storage projects by Equator Solar
15
Years of Equator Solar
Fix what you buy before anyone prices it.
Quotes from different suppliers differ in usable capacity, warranties and scope, so they cannot be compared as they stand. A specification (Lastenheft) fixes what you buy before anyone prices it, and every bid then answers the same requirements.
0
Bids from ZNX in a tender we wrote
Manufacturer-neutral
Specification before anyone prices it
What you get and what we need

The specification fixes power, usable capacity, efficiency, degradation and warranty terms for each component, plus grid code compliance, fire protection and O&M (operation and maintenance). We run the tender, answer the bidders’ questions and bring every bid onto the same basis, so that the bids can be compared technically and commercially.
- Specification (Lastenheft): power, usable capacity, efficiency, degradation and warranty terms per component, availability, grid code compliance, fire protection, control and monitoring interfaces, O&M, acceptance criteria
- Bidder shortlist
- Tender package and Q&A handling
- Normalised bid comparison, technical and commercial
- Negotiation support
- Technical contract annexes
0
Bids from ZNX in a tender we wrote
Manufacturer-neutral
Specification before anyone prices it
What we need from you
We need the result of your analysis and your procurement rules.

We build the specification on the sizing from an earlier analysis or study and on your own procurement rules. When we know your decision makers and timeline from the start, the tender stays on schedule.
- Result of the analysis or study
- Site data
- Your procurement rules
- Decision makers and timeline
How it runs
Five steps from a draft specification to an award recommendation.
Specification draft and review
We draft the Lastenheft and review it with you before it goes to any bidder.
Bidder shortlist
We propose a shortlist of bidders able to answer the specification in full.
Tender and Q&A
We run the tender and answer bidder questions on your behalf.
Bid evaluation
We bring every bid into one technical and commercial comparison.
Award recommendation and contract annexes
We recommend an award and prepare the technical contract annexes.
Role and fee
This is how we are engaged on this service and how the fee is set.
One role per project
On every project we take one of two roles, never both. As independent advisor we are paid a fee, earn nothing on hardware and take no commission from manufacturers or installers. As turnkey partner we deliver the system through vetted installation partners under one contract. If we wrote the specification or evaluate the bids, we do not bid.
Fee
Load-profile analysis, feasibility studies, quote reviews and acceptance tests are offered at a fixed price agreed on the scope. Owner's engineering is billed by day rate or as a fixed fee. Turnkey delivery is a fixed-price contract.
The figures and references on this site are projects of Equator Solar Systems Ltd in East Africa. The contracting party for ZNX services is ZNX Energy GmbH.



