B2B sales
installers handle themselves.

It's a B2B sales platform: a store under your brand, each customer's prices, orders, invoices, payments, shipping, CRM and documents in one flow. Your company's sector only determines the add-on modules: for renewable energy companies, that means three calculators. Everything else works exactly as it does for wholesalers in any other sector.

Like yours. Your logo, your categories, your welcome message and your address — a subdomain or a dedicated domain. Installers log in to your company's store and see only your offer and their own prices.

Yes, and that's usually how it starts. The store, price list and first customers work from day one; we switch on the calculators whenever you want — it's a toggle on our side, not a separate rollout.

Excel can work out a bill of materials, but it doesn't know this installer's price list or what's left in stock, and someone still has to retype the items into the system. Here, the calculation result lands in the cart as ready-made line items at this customer's prices.

On yours. Mounting elements are ordinary products of your company: they have your prices, VAT, stock levels and photos. The calculator only gets a few extra parameters (type, colour, dimensions, commercial rail length) that it uses to pick items. The 59-element starter catalogue is imported with a single command and doesn't overwrite prices on later updates.

They'll see the result and the bill of materials. They won't see the weightings or the calculation breakdown — that's the calculator's know-how. The gate sits in the API, not in the interface, so the details don't leak even in the server response.

No. Wall materials, insulation, heat source efficiencies, fuel calorific values and climate zones are data shared across the whole market, so we maintain them centrally (266 dictionary entries and 130 efficiency table rows). You bring the catalogue, we bring the physics.

Yes. Every customer has their own list of calculations in the store: one click loads it into the form, the next save overwrites the same record, and "New calculation" starts from scratch. In the panel you see every customer's calculations — same data, same result.

Ceramic and concrete tiles (batten hook or rafter bracket), plain tiles, metal roof tiles, trapezoidal, corrugated and standing seam sheet, plus roofing felt and shingles. We deliberately don't calculate sandwich panels or insulated felt roofs: there the covering manufacturer specifies the fixing method, and a guessed bill of materials would mislead the customer.

Each of the three calculators has a regression test suite (96 cases in total) covering every calculation branch and edge case. The tests run on every change to the algorithm or the dictionaries, so tweaking one coefficient can't quietly shift the result in another variant.

There's no separate fee for the calculators and no commission on sales. You pay for a plan (FreeSpace 0 zł, FullSpace 299 zł, ProfiSpace 499 zł net/mo), and we enable the sector modules for renewable energy companies. Drop us a line after creating your account — we set your sector and the calculators appear in the panel and in the store.

You create a free account, we set your sector to renewable energy, you import the mounting catalogue with a single command and tag your panels (their dimensions fill into the calculator automatically). We can load your price list and customer list for you — see setup below.