Data tools for the power sector

SpotcastHourly PLD (Brazil's spot price) forecast, with a public track record

Forecasts next-day hourly power prices — hourly PLD for Brazil's 4 submarkets and European day-ahead markets (DE-LU, AT, FR) — and publishes each forecast's error against official prices. The forecast log is append-only: nothing is rewritten after the fact.

• PLD for the 4 submarkets (SE/CO, S, NE, N) and 3 European zones
• Accuracy published in 7- and 30-day windows, against naive baselines
• Where the baseline beats the model, the site publishes the baseline — and says so

Research demo; experimental forecasts, not operating or investment advice.

Sources: CCEE and ONS (Brazil) and Energy-Charts/Fraunhofer ISE (Europe) — open data, CC-BY. Open Spotcast →

TUSTTUST (transmission tariff) by busbar, without mining ANEEL spreadsheets

Look up the Transmission System Use Tariff by busbar/substation, for generation and load, across three tariff cycles (2023/2024 to 2025/2026), always with the originating Homologating Resolution. Estimate EUST from your MUST, including batch via CSV.

• 1,798 searchable busbars, with history by cycle
• Current cycle 2025/2026 — ANEEL REH nº 3.482/2025
• No estimated or invented tariffs: official values only, with origin act

Sources: ANEEL Homologating Resolutions (CEDOC). Open TUST →

CORTEHow much wind and solar did Brazil curtail?

Open explorer of constrained-off (generation curtailment) history for wind and solar plants on the SIN (the national grid): how much was cut, where, for which reason (energy, reliability, network) and what that would be worth at hourly PLD. Public methodology and downloadable CSVs.

• Wind series since Oct/2021 and solar since Apr/2024 (ONS reporting start)
• Per-plant page, curtailment ranking and press kit with citable figures
• Reproducible numbers: open ETL on ONS open data

Sources: ONS Open Data and CCEE (hourly PLD) — CC-BY. Open CORTE →

CONEXÃOBasic Grid access, by substation

Access intelligence for the SIN (national grid) transmission network: TUST by busbar, transformation capacity and Access Season (PNAST) tracking by substation — official data only, always with origin document and date. What has no source shows as missing, never estimated.

• 931 Operation Network substations, each with its own page and search
• Calendar and registrations for the 1st Access Season (PNAST)
• Email alerts for substations you follow

Sources: ONS Open Data, ANEEL, MME and EPE. Open CONEXÃO →

BESSWhere is a battery worth it in Brazil?

Screening and pre-feasibility workbench for battery storage, focused on LRCAP 2026 – Storage (auctions on 02 and 04 Dec 2026): fixed-revenue calculator (CRCAP), historical arbitrage by submarket and siting on bonus busbars — with open, editable assumptions.

• Transparent scenarios, never forecasts: every parameter cited or marked as an assumption
• Siting crosses the 129 bonus busbars (β=0.9) with TUST and curtailment by state
• Historical arbitrage is a declared theoretical ceiling, not a revenue projection

Not investment advice.

Sources: CCEE (PLD), ANEEL (TUST), ONS (curtailment), EPE and MME. Open BESS →

SimSolarIs rooftop solar worth it at your home?

Free residential solar viability simulator: system size, cost, payback and 25-year savings — with Law 14.300 (Fio B) modeled year by year. Result on screen, no signup or phone.

• Irradiation by municipality from the INPE/LABREN Atlas (5,569 municipalities)
• Law 14.300 (Fio B) modeled year by year, with open editable assumptions
• 25-year cash flow, payback and financing estimate

Distributor tariffs are interim (10 with homologated value; others estimated) and assumptions marked as such. Not a commercial proposal.

Sources: Brazilian Solar Energy Atlas (INPE/LABREN, 2017); ANEEL homologated tariffs (compiled) and Greener costs. Open SimSolar →

Data CentersAI data centers in Brazil — map and ranking

Interactive map of AI and hyperscale data centers in Brazil (and the world as context): location, power (MW), investment, status and sources. Every figure is cited.

• Location, power (MW), investment and status per data center
• Ranking and interactive map, Brazil with global context
• Every figure cited to its source

Sources: Sources cited per data center (announcements, agencies and trade press). Open Data Centers →

CAPEXWhere does the money go in a Brazilian power plant?

Cost breakdown for generation plants in Brazil — CAPEX and recurring costs (O&M, TUST, insurance) in R$/Wp and % of total, each line cited or marked as an assumption. Never invented figures.

• CAPEX and recurring costs (O&M, TUST, insurance) by generation source
• Values in R$/Wp and % of total
• Each line cited or marked as an assumption

Sources: Each line cited to source or marked as an assumption. Open CAPEX →

MINERARMine bitcoin at home or buy it?

Make-vs-buy bitcoin decider: compares the cost of producing 1 BTC mining at home with buying on the market (DCA) and renting hashrate (HaaS), and shows the energy-tariff break-even and the minimum viable home capacity — opening with the answer for a typical Brazilian case, with adjustable tariff, rig and scale. A calculator on mwhash open math (frontier.py) and a measured HaaS premium — not a live quote.

• Compares mine × buy (DCA) × rent hashrate (HaaS) for the same capital, in year 1
• Energy-tariff break-even, power bill and minimum capacity by rig and scale — open editable assumptions
• HaaS premium measured on the order book (NiceHash), not estimated; method and assumptions versioned in the mwhash repo

Calculator with versioned assumptions (not a live quote). Not financial advice.

Sources: mwhash open math (frontier.py); residential B1 all-in tariff (ANEEL); measured HaaS premium (NiceHash order book). Open MINERAR →

ONDE MINERARWhere in the world is power cheap enough to mine bitcoin?

Global ranking of ~30 regions where electricity is cheap enough to mine bitcoin — sortable by pure price (ct/kWh) or by a quality index crossing livability and legality that you reweight. Shows the cost to produce 1 BTC per region from the mwhash frontier, on each place's real mining price (industrial/PPA, not the residential tariff). Every figure is cited; where a source is missing, it shows as no data — never imputed.

• ~30 regions sortable by pure price (ct/kWh) or a reweightable livability+legality index
• Cost to produce 1 BTC per region from the mwhash frontier (frontier.py), on real mining price — not the residential tariff
• Every figure cited; gaps marked as no data and the index renormalizes over available axes — nothing imputed

Ranking on cited data and versioned assumptions (not a live quote). Not financial advice.

Sources: mwhash frontier (frontier.py); mining prices by region (industrial/PPA), legality and livability cited by source. Open ONDE MINERAR →

BUZZWhat's hot in the power sector, measured — not guessed

Thermometer of Brazilian power-sector terms: an ETL collects news from official sources (ANEEL, MME, EPE, ONS) and trade press (Canal Energia, MegaWhat), counts mentions from a fixed term dictionary and publishes the ranking with weekly and monthly trend. Each item is labeled by source (official vs press) and the counting method is public — citable.

• Term ranking with trend (↑↓) in 7- and 30-day windows
• Labeled sources: official (gov.br) vs trade press — never mixed
• Public versioned dictionary and counting method; auditable JSON snapshot

Mention counts in public sources — measures attention, not importance. Sources and method cited on the page.

Sources: ANEEL/MME/EPE/ONS news (official) and Canal Energia/MegaWhat (press), collected by versioned ETL. Open BUZZ →

MattAgentAI agent for power-system studies

Describe your project and agent Matt runs the interconnection study on your network model: power flow, N-1 contingency and network editing, following operator standards. Imports models in several formats (PSS/E, ANAREDE, MATPOWER, CIM and others).

• Power flow (Newton-Raphson) and N-1 contingency on your model
• Conversational interaction: you describe, the agent runs pandapower
• Reports and diagrams from the imported model itself

Platform studies tier — the only product that is not open data. Requires an account.

Sources: Runs on the network model you provide (pandapower). Open Matt →