Is PlaceVolt's Site Potential Score a revenue forecast?

No. It is an opportunity/pre-diligence score built from open data proxies. It says where a public charger is more or less likely to make sense to investigate. It is never a revenue, utilisation, kWh or ROI forecast, and it is not investment advice. Always validate with a site visit, grid-connection check, permits and private data before deciding.

Why does PlaceVolt rank Kalmar highly when it already has chargers?

PlaceVolt's regional demand model treats an established public-charging market as a proven-demand signal, not a reason to skip an area. Testing showed that ranking purely by raw under-supply (gap-hunting) performed worse than rewarding places with demonstrated charging demand. Kalmar ranks #10 nationally on that demand model; the per-address Site Score then locates the specific under-served spots inside that proven market.

What data does the Kalmar example use?

Open Swedish data only: NOBIL / Swedish Energy Agency for charging-station supply (CC BY 4.0), Statistics Sweden (SCB) for population, cars-per-capita and income, Lantmäteriet for geodata, Trafikverket for road context, and Svenska kraftnät for electricity bidding areas. The full source registry and licences are on the app's Sources page.

Can I reproduce the numbers in this article?

Yes. The regional opportunity row comes from GET https://api.placevolt.com/api/signal-sites/0880 (Kalmar, region code 0880). The per-address screening pass comes from POST https://api.placevolt.com/api/site-score with the representative coordinates. Both are shown verbatim in the article's reproduce-it-yourself section.

Worked example · Open data · Sweden

Where should the next EV charger go in Kalmar? A worked PlaceVolt Site Score example

A concrete, reproducible walk-through of how PlaceVolt turns open Swedish data into a screening signal for a public EV (electric-vehicle) charger — the regional demand read, the seven-factor Site Potential Score for a specific point, and an honest account of what the number does and does not know.

Agonist Development AB · Published 2026-07-10 · Every figure below is reproducible from the open-data API calls listed at the end.

Read this first. PlaceVolt produces an opportunity / pre-diligence score, not a revenue forecast. It says where a public charger is more or less likely to be worth investigating — it never claims revenue, utilisation, kilowatt-hours or return on investment, and it is not investment advice. Always validate a site with a physical visit, a grid-connection check, permits and private data before committing capital.

The question a site-acquisition analyst actually asks

Imagine you run charge-point expansion for a Charge-Point Operator (CPO), or you own a retail/parking property in south-east Sweden, and you have budget for one more public charger. The real question is not "is Sweden a good EV market" — it is "which town, and roughly where in it, deserves the cost of a site visit first?"

PlaceVolt answers that in two layers, both built only from open, licensed public data:

Regional demand screening — rank Sweden's 290 municipalities (kommuner) by demonstrated EV-charging demand, so you look in the right town.
Per-address Site Potential Score — score a specific point on seven explainable factors, so you find the under-served spot inside that town.

This article works both layers for one real place: Kalmar, the county seat of Kalmar län (region code 0880) on Sweden's south-east coast.

Layer 1 — Is Kalmar a proven-demand market?

PlaceVolt's national opportunity leaderboard ranks each municipality on a demand model. For Kalmar the live open-data API returns:

Kalmar (region `0880`) — regional opportunity row, from `GET /api/signal-sites/0880`
Signal (open-data proxy)	Kalmar value	What it means
Opportunity Score (0–100)	84.3	National rank #10 of 290; #1 in Kalmar län
Cars per 1,000 residents (SCB)	420	Car-dependent population — a structural EV-demand base
Median income (SCB)	346.9 kSEK	67th national percentile — above-average purchasing power
Public charging stations today (NOBIL)	83	An established charging market (96th supply percentile)
Nearby points of interest / dwell (density)	257	88th percentile — plenty of destination dwell-time locations

An honest note on the model. Kalmar already has 83 public stations, so why does it rank high rather than being "done"? Because PlaceVolt's demand model deliberately treats an established charging market as a proven-demand signal. When we tested the opposite instinct — ranking purely by raw under-supply ("gap-hunting") — it validated worse at pointing to workable sites. So Layer 1 tells you Kalmar is a real demand market worth entering; it does not yet tell you the specific corner to build on. That is Layer 2's job.

PlaceVolt Market Map screenshot showing thousands of existing public charging stations plotted across Sweden, with live availability counts, used to see existing supply before scoring a new site. — **Figure 1.** PlaceVolt's Market Map renders the real, live Swedish charging dataset (~14,000 stations from NOBIL) so you can see existing supply and competition before scoring a candidate. Source: NOBIL / Swedish Energy Agency (CC BY 4.0), processed by PlaceVolt.

Layer 2 — Scoring a specific point in Kalmar

PlaceVolt derives a representative point for the municipality's opportunity — the data-weighted centre of its demand, at 56.6694° N, 16.3432° E (central Kalmar, near Malmen/Södra vägen). This is a screening centroid from open data, not a surveyed parcel: treat it as "start looking around here," then walk the streets.

Running that point through PlaceVolt's per-address model returns a Site Potential Score in the "high" band, with the seven factors weighted as below. The composite is a screening signal, so the useful read is the shape of the profile — which factors carry the point and which drag it — more than the single integer.

Figure 2. Site Potential Score factor breakdown at the Kalmar representative point (0–100 per factor; the percentage is each factor's weight in the composite). The point is carried by strong access/mobility (85) and healthy, non-saturated competition (78); demand at this exact centroid (58) is the softest factor. Composite lands in the "high" band. These are the launch-preview model outputs — see the caveat below.

What each factor measures (the PlaceVolt Site Potential model)

Factor	Weight	Open-data basis (proxy)
Demand	30%	Population, cars-per-capita, EV registration trend, income (SCB)
Charging gap	25%	Existing charger supply vs demand in the catchment (NOBIL)
Access & mobility	15%	Road context and traffic exposure (Trafikverket, Lantmäteriet)
Site-type fit	10%	Match between the location type and dwell/charging behaviour
Competition quality	10%	Density, operator mix and saturation of nearby chargers (NOBIL)
Reliability opportunity	5%	Room to serve where nearby supply is thin or ageing
Energy context	5%	Electricity bidding-area context (Svenska kraftnät)

At this point the model also reports the local competition it can see: about one charger within 1 km and nine within 3 km, dominant operator E.ON Energilösningar AB, and a low saturation risk — i.e. demonstrated demand without the corner already being crowded. Its confidence in the read is 0.72, and it explicitly claims no revenue or utilisation figure.

Launch-data caveat (stated by the tool itself). The per-address numbers above come from PlaceVolt's launch edge, which currently runs on public/open plus demo data until the full geospatial (PostGIS) origin replaces it. So read Layer 2 as a screening pass, not a production per-parcel valuation — the band and the factor shape are the signal; the exact integers will firm up as the production data origin lands. The regional Layer-1 opportunity row, by contrast, is computed from the live open datasets.

Street map of central Kalmar, Sweden, with a marker at 56.6694° N, 16.3432° E near Malmen and Södra vägen, showing the representative screening point relative to Kalmar city centre, the airport and the coast. — **Figure 3.** The representative screening point in central Kalmar (marker at 56.6694° N, 16.3432° E). This is an open-data demand centroid — a place to start a site walk, not a recommended parcel. Base map © OpenStreetMap contributors.

PlaceVolt Site Score screen in the product, showing a scored address with its band, an explainable factor breakdown, confidence level and data sources. — **Figure 4.** The same Site Potential Score inside the PlaceVolt app: band, explainable factor breakdown, confidence and the exact data sources behind the number — the trust surface every score and report carries.

How to read this honestly

A good screening tool is one that is clear about its own limits. For this Kalmar example specifically:

It is opportunity, not revenue. Nothing here estimates how many sessions or how much money a charger would earn. It ranks likelihood of being worth a closer look.
The point is a centroid, not a plot. 56.6694° N, 16.3432° E is a data-weighted screening centre. The right actual parcel could be several streets away; only a site visit decides that.
Open data is incomplete and delayed. NOBIL supply, SCB demography and Trafikverket traffic each refresh on their own cadence (some traffic counts are years old). PlaceVolt shows the freshness so you can weight it.
It does not know the things that kill projects. Grid-connection capacity and cost, land control, permits, and private utilisation data are all outside the score and must be checked before any decision.
The regional model rewards proven demand. If your strategy is deliberately greenfield (build where no one has yet), weight Layer 2's charging-gap factor higher than Layer 1's ranking.

Reproduce every number yourself

None of this is a black box. The two API calls below return the exact figures used above:

# Layer 1 — Kalmar's regional opportunity row (live open data)
curl -s "https://api.placevolt.com/api/signal-sites/0880"

# Layer 2 — per-address screening pass at the representative point
curl -s -X POST "https://api.placevolt.com/api/site-score" \
  -H "content-type: application/json" \
  -d '{"latitude":56.6694,"longitude":16.3432,"site_type":"retail"}'

The full source registry, licences and refresh dates are on the app's coverage & sources pages.

Score your own site in Kalmar — or anywhere in Sweden

Check a single address free, no account needed. Unlock the full report — breakdown, competition and sources — when it's worth it. For CPOs, investors and EPC (engineering-procurement-construction) teams, the 3-site pilot audit screens a shortlist before you spend on feasibility studies.

Check a site free Open the app Request a 3-site pilot audit

Data sources & attribution

This example uses open, licensed public data only, processed by PlaceVolt:

NOBIL / Swedish Energy Agency (Energimyndigheten) — public charging-station locations and status (CC BY 4.0).
Statistics Sweden (SCB) — population, cars per capita, income (CC0).
Lantmäteriet — geodata (CC0).
Trafikverket — road and traffic context.
Svenska kraftnät — electricity bidding-area context.

Scores are derived from open-data proxies and should be validated with site feasibility, grid connection, permits and private utilisation data before investment decisions. This is a potential/opportunity score, not a revenue forecast.